{
  "response": {
    "Key": "BOS-SAO",
    "orig": {
      "code": "BOS",
      "type": "airport",
      "city": "Boston",
      "fullCity": "Boston, Massachusetts",
      "airport": "Logan Intl Airport"
    },
    "dest": {
      "code": "SAO",
      "type": "airport",
      "city": "São Paulo",
      "fullCity": "São Paulo, São Paulo",
      "airport": "Guarulhos Intl Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Boston to São Paulo?",
        "answer": "The flight from Boston to São Paulo is about 4,810 miles and typically takes 9 hours and 45 minutes nonstop, with the return leg being five minutes longer—a negligible difference mostly from prevailing winds.",
        "methodology": "Flight times and distances come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). The typical flight time is the median scheduled block time across all carriers on the route, computed the same way in both directions so the difference reflects prevailing winds rather than any change in method. Distance is the great-circle distance between the two airports, so the actual flown track is typically 2-5% longer.",
        "toolsUsed": [
          "flight_schedule"
        ]
      },
      "q1": {
        "question": "Are there any direct flights from Boston to São Paulo?",
        "answer": "LATAM Airlines flies nonstop from Boston (BOS) to São Paulo–Guarulhos (GRU) with 11 weekly flights. The service operates daily, with two departures on some days — typically at 8:55 AM and 9:55 AM — and the flight takes about 9 hours and 45 minutes.",
        "methodology": "Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours. Carrier service, flight times and distances for this route come from our flight-schedule database, which draws on published airline timetables, U.S. government schedule data, and observed operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We report the days of the week and the departure times each carrier operates. The typical flight time is the median scheduled block time, given both per carrier and across all carriers on the route; where a schedule does not publish an elapsed time, it is derived from the scheduled departure and arrival times converted to UTC. Outbound and return times are computed by the same method, so the difference between them is directly comparable and reflects prevailing winds rather than any change in derivation. Distance is the great-circle distance between the two specific airports named, so an actual flown track is typically 2-5% longer. Where shown, on-time departure and arrival rates and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, which covers U.S. domestic routes only; where a typical fare is shown, it comes from the U.S. DOT Airline Origin and Destination Survey (DB1B), a quarterly 10% sample of tickets sold.",
        "toolsUsed": [
          "route_airlines",
          "flight_schedule"
        ]
      },
      "q2": {
        "question": "Are there visa requirements to travel from Boston to São Paulo?",
        "answer": "Travelers holding a United States passport need a visa to visit Brazil for tourism, and it must be obtained in advance as an eVisa through the online system. The eVisa permits a stay of up to 90 days.\n\nThis is general guidance to help you plan, not official immigration advice — entry rules can change and can depend on your nationality and circumstances, so please confirm the current requirements with the relevant embassy or official government source before you travel.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://en.wikipedia.org/wiki/Visa_policy_of_Brazil",
            "title": "Visa policy of Brazil",
            "favicon": "https://en.wikipedia.org/static/favicon/wikipedia.ico"
          },
          {
            "url": "https://gestaoconteudo.presidencia.gov.br/gestao_brazilgovnews/about-brazil/coming-to-brazil/what-you-need-to-know-to-visit-brazil",
            "title": "Coming to Brazil"
          },
          {
            "url": "https://www.gov.br/en/government-of-brazil/latest-news/2022",
            "title": "2022"
          },
          {
            "url": "https://www.gov.uk/foreign-travel-advice/brazil/entry-requirements",
            "title": "Brazil entry requirements — GOV.UK",
            "favicon": "https://www.gov.uk/favicon.ico"
          }
        ],
        "preopenedReferences": true,
        "stageOnly": true
      },
      "q3": {
        "question": "What are the ground transportation options in São Paulo?",
        "answer": "At São Paulo/Guarulhos International Airport (GRU), you can reach the city center by taxi, ride share, car rental, airport bus, or the airport train (likely the CPTM Line 13–Jade that connects to the metro). The fastest option is usually a taxi or ride share, though the airport bus and train are more economical and avoid traffic. The most used option for visitors is the airport bus, with dedicated services to key points like Tietê and Barra Funda bus stations, Congonhas Airport, and the Paulista Avenue hotel circuit. Intercity buses also serve Campinas, the northern coast, and other regional cities. For a balance of speed and cost, the train to Tatuapé metro station is a solid choice, though taxis remain popular for door-to-door convenience.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.gru.com.br/en/passenger/to-from-gru-airport/bus/",
            "title": "To/From the Airport - Bus",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23"
          },
          {
            "url": "https://www.gru.com.br/pt/passageiro/como-chegar-sair/onibus",
            "title": "Como Chegar/Sair - Ônibus",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23",
            "time_published": "2026-07-13T17:46:51Z"
          },
          {
            "url": "https://www.gru.com.br/en/passenger/to-from-gru-airport/airline-buses/",
            "title": "To/From the Airport -",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23",
            "time_published": "2026-08-11T07:33:27Z"
          },
          {
            "url": "https://www.gru.com.br/en/passenger/discover-gru/cias-aereas/Details?code=12",
            "title": "Discover GRU - Airlines",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23",
            "time_published": "2026-06-14T09:21:14Z"
          },
          {
            "url": "https://www.gru.com.br/pt",
            "title": "GRU Airport - Aeroporto Internacional de São Paulo - Site Oficial",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23"
          }
        ]
      },
      "q4": {
        "question": "When is the cheapest time to fly from Boston to São Paulo?",
        "answer": "Average fares from Boston to São Paulo bottom out around $388 in late September, the cheapest stretch of the year for this route. The cheapest months overall are September ($402), October ($407), and January ($433), while the most expensive period is late December at $555 on average. December, July, and June are the priciest months, with averages of $521, $504, and $484 respectively.",
        "methodology": "Seasonal fares come from Priceline's own air booking-summary archive, analysed in-house and refreshed monthly. For each day of the year we take a representative round-trip fare, a blend of the 25th-percentile and average ticket price over the route's bookings, and smooth the series into a seasonal curve; the half-month low and high and the monthly figures quoted here are averages of that curve. Thin and international routes borrow their seasonal shape from the nearest busy routes, with the price level anchored to the route's own bookings.",
        "toolsUsed": [
          "seasonal_prices"
        ]
      },
      "q5": {
        "question": "How far in advance should I book tickets from Boston to São Paulo?",
        "answer": "For Boston to São Paulo, the best fares come when booking roughly 4 to 7 weeks before departure, averaging around $375. Booking about 35 days out yields the lowest single price at $374, while fares climb steadily if you wait until the last minute or book more than 100 days in advance.",
        "methodology": "Booking-window guidance comes from the same monthly in-house analysis of Priceline's own air booking-summary archive. We aggregate the route's bookings by how many days before departure they were made, from about 180 days out to the day of travel, smooth the curve, and highlight the stretch of lead times with the lowest average fare. Thin and international routes borrow the curve shape from the nearest busy routes, anchored to the route's own price level. It reflects current fares and is refreshed monthly.",
        "toolsUsed": [
          "booking_timing"
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Boston to São Paulo?",
        "answer": "There are no nonstop red‑eyes from Boston to São Paulo, but one‑stop itineraries whose long leg is an overnight flight are available. The overnight leg typically departs from a U.S. hub between roughly 19:30 and 22:55 and arrives at São Paulo/Guarulhos (GRU) between 05:00 and 09:50 — those arrivals before 06:00 land in the early hours, while arrivals after about 06:30 land in the morning. Carriers operating the overnight segment include American Airlines (via Miami, Dallas/Fort Worth, or New York JFK), United (via Chicago O'Hare, Washington Dulles, or Houston), Delta (via Atlanta or New York JFK), LATAM (via Miami, Orlando, or New York JFK), and Air Canada (via Toronto or Montreal).",
        "methodology": "Red-eye flights are identified from scheduled local departure and arrival times in our flight-schedule database — built from published airline timetables and official schedule data, including U.S. Department of Transportation records for domestic routes — flagging services that depart late at night and arrive the following morning; for connecting itineraries the red-eye is based on the timing of the overnight long-haul leg.",
        "toolsUsed": [
          "redeye_flights"
        ]
      },
      "q7": {
        "question": "Which airlines usually operate this route from Boston to São Paulo?",
        "answer": "LATAM Airlines flies nonstop from Boston to São Paulo (GRU) daily, with 11 weekly flights and a median fare around $927. Other carriers may serve the route with connections, but LATAM is the only nonstop operator.",
        "methodology": "Airlines and weekly frequencies come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a typical fare is shown for a carrier, it is the median of the real fares Priceline users found on this route in the last 72 hours.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q8": {
        "question": "If I need a connection, what are common layover cities between Boston and São Paulo?",
        "answer": "Common layovers include Miami, New York, and Panama City, which offer broad connections and efficient transfers, with Panama City allowing visa-free transit for many nationalities."
      },
      "q10": {
        "question": "Which months have the best weather for traveling to São Paulo?",
        "answer": "March to May and October to November offer mild temperatures and fewer tourists, avoiding summer heat and rain."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Boston to São Paulo?",
        "answer": "Bring a passport valid for at least six months, a Brazil eVisa unless exempt, proof of onward travel, payment for baggage, and any required vaccination certificates."
      },
      "q12": {
        "question": "Which airport should I use in São Paulo?",
        "answer": "São Paulo has two main airports. Guarulhos (GRU) is the international gateway, located about 25 km northeast of downtown, and serves most long-haul flights and major alliances. Congonhas (CGH) is closer to the city center, primarily handling domestic and regional flights, and is preferred for quick access to central business districts."
      },
      "q13": {
        "question": "How do I get to Logan Intl Airport from the city center?",
        "answer": "From downtown Boston, the fastest and most popular option is the MBTA's free Silver Line SL1 bus from South Station directly to all Logan terminals, or the Blue Line subway to Airport Station with a free shuttle connection. Ride-share services like Uber and Lyft plus taxis are readily available curbside at each terminal, offering door-to-door convenience at a higher cost. For those driving, Logan offers Central Parking, Economy Parking, and Terminal Garages, with advance reservations available around $25–29 per day. Suburban travelers can use the Logan Express bus from Back Bay, Braintree, Framingham, Peabody, or Woburn, while water taxis and MBTA ferries provide a scenic alternative from Boston Harbor.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.massport.com/logan-airport/getting-to-logan/taxi-limos",
            "title": "Taxis and Limos | Massport",
            "favicon": "https://www.massport.com/themes/custom/massport/favicon.ico"
          },
          {
            "url": "https://www.massport.com/logan-airport/getting-to-logan/public-transportation",
            "title": "Public Transportation to Logan Airport | Massport",
            "favicon": "https://www.massport.com/themes/custom/massport/favicon.ico"
          },
          {
            "url": "https://massport.com/logan-airport/getting-to-logan",
            "title": "How to Get to Logan Airport | Massport",
            "favicon": "https://massport.com/themes/custom/massport/favicon.ico"
          },
          {
            "url": "https://www.massport.com/logan-airport",
            "title": "Boston Logan International Airport | Massport",
            "favicon": "https://www.massport.com/themes/custom/massport/favicon.ico",
            "time_published": "2026-06-08T00:00:00Z"
          },
          {
            "url": "https://www.massport.com/logan-airport/getting-to-logan/water-transportation",
            "title": "Ferry & Water Taxi to Logan Airport | Massport",
            "favicon": "https://www.massport.com/themes/custom/massport/favicon.ico"
          }
        ]
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at São Paulo airport?",
        "answer": "São Paulo/Guarulhos International Airport has two hotels directly inside the terminals: the Slaviero Fast Sleep, offering hourly sleep cabins in the National Area of Terminal 2, and the Tryp by Wyndham São Paulo Guarulhos Airport, a traditional hotel located in the transit area of Terminal 3. Both are available for overnight stays, and the Tryp by Wyndham requires an international boarding pass or connection.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.gru.com.br/pt/passageiro/descubra-gru/conforto/hoteis",
            "title": "Descubra GRU - Relax - Hotéis",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23"
          },
          {
            "url": "https://sleepinginairports.net/guides/sao-paulo-guarulhos-airport-guide.htm",
            "title": "São Paulo Guarulhos Airport Guide (GRU) - Sleeping in Airports",
            "favicon": "https://www.sleepinginairports.net/nitropack_static/oBWrHkPujHTPIaVWqdDSDhClXUyrYhhb/assets/images/optimized/rev-b853180/www.sleepinginairports.net/wp-content/uploads/2018/09/cropped-sia-logo-180x180.png",
            "time_published": "2018-10-02T00:00:30Z"
          },
          {
            "url": "https://www.sleepinginairports.net/casa/saopaulo_guarulhos.htm",
            "title": "São Paulo Guarulhos Airport Guide (GRU) - Sleeping in Airports",
            "time_published": "2026-05-30T01:39:16Z"
          }
        ]
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Guarulhos - Governador André Franco Montoro Intl Airport?",
        "answer": "São Paulo/Guarulhos International Airport (GRU) offers currency exchange at casa de câmbio counters across its terminals, along with free Wi‑Fi throughout the passenger areas. Prayer rooms or chapels are not part of the facilities at this airport.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.gru.com.br/pt/institucional/sobre-gru-airport/terminais",
            "title": "GRU Airport - Aeroporto Internacional de São Paulo",
            "time_published": "2025-10-09T00:00:00Z"
          },
          {
            "url": "https://www.gru.com.br/en/passenger/discover-gru/airport-maps",
            "title": "Discover GRU - Airport Maps",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23"
          },
          {
            "url": "https://www.gru.com.br/pt",
            "title": "GRU Airport - Aeroporto Internacional de São Paulo - Site Oficial",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23"
          },
          {
            "url": "https://www.gru.com.br/es",
            "title": "GRU Airport - Aeroporto Internacional de São Paulo - Sitio Web Oficial",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23"
          },
          {
            "url": "https://en.wikipedia.org/wiki/S%C3%A3o%20Paulo%2FGuarulhos%20International%20Airport",
            "title": "São Paulo/Guarulhos International Airport",
            "time_published": "2026-04-25T20:24:25Z"
          }
        ]
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Boston and São Paulo airports?",
        "answer": "Boston Logan International Airport (BOS) offers wheelchair assistance through your airline, accessible restrooms, elevators, a Hidden Disabilities Sunflower program, a dedicated sensory/calming room, and BOS PAWS therapy dogs; request wheelchair help directly from your airline in advance. At São Paulo/Guarulhos International Airport (GRU), the main airport for the São Paulo metro, you'll find an accessibility mode for its website, personalized meet-and-assist services, and diaper changing rooms (fraldário) for families with children. For mobility assistance at both airports, contact your airline ahead of time — typically 24 to 48 hours before travel — to arrange wheelchair or special services.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://massport.com/logan-airport/at-the-airport/ada-compliance-and-accessibility",
            "title": "Accessibility at Boston Logan | Massport",
            "favicon": "https://massport.com/themes/custom/massport/favicon.ico"
          },
          {
            "url": "https://massport.com/logan-airport/at-the-airport/ada-compliance-and-accessibility/getting-to-and-from-logan",
            "title": "Getting To and From Boston Logan | Massport",
            "favicon": "https://massport.com/themes/custom/massport/favicon.ico"
          },
          {
            "url": "https://www.massport.com/logan-airport/at-the-airport/concierge",
            "title": "Meet & Greet / Concierge Services at Boston Logan | Massport",
            "favicon": "https://www.massport.com/themes/custom/massport/favicon.ico"
          },
          {
            "url": "https://www.massport.com/logan-airport",
            "title": "Boston Logan International Airport | Massport",
            "favicon": "https://www.massport.com/themes/custom/massport/favicon.ico",
            "time_published": "2026-06-08T00:00:00Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Logan_International_Airport",
            "title": "Logan International Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-11T10:05:05Z"
          },
          {
            "url": "https://www.gru.com.br/en/passenger",
            "title": "GRU Airport - Aeroporto Internacional de São Paulo - Site Oficial",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23"
          },
          {
            "url": "https://www.gru.com.br/pt/passageiro/noticias-detalhe?code=254",
            "title": "Website - Português Notícias",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23",
            "time_published": "2026-07-13T17:44:29Z"
          },
          {
            "url": "https://www.gru.com.br/es/pasajero/noticias-detalhe?code=360",
            "title": "Website - Espanhol Noticias",
            "time_published": "2026-01-21T00:00:00Z"
          },
          {
            "url": "https://www.gru.com.br/pt",
            "title": "GRU Airport - Aeroporto Internacional de São Paulo - Site Oficial",
            "favicon": "https://www.gru.com.br/comum/images/favicon.ico?rev=23"
          },
          {
            "url": "https://www.gru.com.br/es/institucional/prensa",
            "title": "GRU Airport - Aeroporto Internacional de São Paulo - Sitio Web Oficial",
            "time_published": "2026-01-20T00:00:00Z"
          }
        ]
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Boston to São Paulo?",
        "answer": "LATAM Airlines operates nonstop service from Boston to São Paulo using Boeing 787-9 aircraft. The route is served daily with departures from Boston Logan to São Paulo Guarulhos.",
        "methodology": "Aircraft types come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). For U.S. routes the type is grounded in the tail number that actually operated the flight; elsewhere it comes from the airline's filed equipment code. Where the source does not commit to a specific variant we name the aircraft family (for example Airbus A320 family) rather than guess, and where no reliable type is on file the aircraft is omitted rather than estimated. Types describe typical scheduled equipment and can vary with seasonal or day-of-week assignments and last-minute swaps.",
        "toolsUsed": [
          "flight_schedule"
        ]
      },
      "q18": {
        "question": "Which airline alliances serve flights from Boston to São Paulo?",
        "answer": "LATAM is the only airline operating nonstop flights from Boston to São Paulo, and it belongs to the oneworld alliance. Other alliances such as Star Alliance and SkyTeam may serve the route via connections, but LATAM is the sole operating carrier with nonstop service.",
        "methodology": "Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q20": {
        "question": "What are the best airport lounge options when departing from Boston?",
        "answer": "When departing from Boston Logan for São Paulo, travelers have several excellent lounge options. The Lounge in Terminal C is open from 06:00 to 22:00 and offers pre-booking, while the Air France Lounge in Terminal E operates from 08:00 to 13:30. Delta Sky Clubs are available at Gates A6 and A18 in Terminal A, as well as in Terminal E, and a Lufthansa Lounge is also located in Terminal E. American Airlines operates an Admirals Club in Terminal B, upper level past security by gate B4, open daily from 4 a.m. to 8:30 p.m. with complimentary food and drinks, a full service bar, Wi-Fi, a kids room, showers, and conference rooms.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://prioritypass.com/lounges/united-states-of-america/logan-international",
            "title": "Logan International Airport BOS Lounges - BOS Airport Guide and lounges. | Priority Pass",
            "favicon": "https://prioritypass.com/icon.png?icon.1k7202wk2zqql.png?dpl=516920c0-0ba4-4888-ba2e-135e5e839cd3"
          },
          {
            "url": "https://www.delta.com/us/en/airports/united-states/boston-sky-club-airport-map",
            "title": "Boston Logan (BOS) Airport Map & Lounges | Delta Air Lines",
            "favicon": "https://www.delta.com/content/dam/delta-applications/dlhome/favicon.ico"
          },
          {
            "url": "https://americanexpress.com/en-us/travel/lounges/the-platinum-card/BOS",
            "title": "American Express Lounges at Logan International Airport | Amex US",
            "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png"
          },
          {
            "url": "https://aa.com/web/i18n/travelInformation/airportAmenities/bos-club.html",
            "title": "Boston, MA (BOS)",
            "favicon": "https://aa.com/content/images/chrome/rebrand/favicon.png"
          },
          {
            "url": "https://aa.com/i18n/travelInformation/airportAmenities/bos-club.jsp",
            "title": "매사추세츠 주, 보스턴(BOS)",
            "favicon": "https://aa.com/content/images/chrome/rebrand/favicon.png"
          }
        ]
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Boston to São Paulo?",
        "answer": "Baggage allowance depends on the airline and fare class. Basic economy often excludes checked bags, while standard international economy typically includes one checked bag and a carry-on. Premium cabins offer more generous allowances."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Boston to São Paulo?",
        "answer": "Flights from Boston to São Paulo typically offer Economy and flat‑bed Business class, with Premium Economy available on select carriers."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies depend on the airline and fare type; flexible and premium cabin tickets often allow same‑day changes or standby, while restrictive economy fares typically do not."
      }
    }
  }
}