{
  "response": {
    "Key": "CHI-LIS",
    "orig": {
      "code": "CHI",
      "type": "airport",
      "city": "Chicago",
      "fullCity": "Chicago, Illinois",
      "airport": "Dupage County"
    },
    "dest": {
      "code": "LIS",
      "type": "airport",
      "city": "Lisbon",
      "fullCity": "Lisbon, Portugal",
      "airport": "Humberto Delgado Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Chicago to Lisbon?",
        "answer": "The flight from Chicago to Lisbon is about 4,000 miles, with a typical nonstop duration of 8 hours and 10 minutes. The return leg is longer, around 9 hours and 20 minutes due to prevailing winds. TAP Air Portugal operates nonstop service from O'Hare on five days a week.",
        "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 Chicago to Lisbon?",
        "answer": "TAP Air Portugal flies nonstop from Chicago O'Hare (ORD) to Lisbon (LIS) five days a week — Wednesday through Sunday — with up to 12 weekly departures, mostly in the early evening. The flight covers roughly 4,000 miles and takes about 8 hours 10 minutes eastbound.",
        "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"
        ]
      },
      "q3": {
        "question": "What are the ground transportation options in Lisbon?",
        "answer": "Lisbon Portela Airport offers several ground transportation options to the city center, including the Metro Red Line (about 20 minutes to downtown), Carris city buses, and 24-hour taxis that reach the center in roughly 15 minutes. The metro is the most-used and generally fastest option for reliable, traffic-free travel, with station access directly at Terminal 1 arrivals. Taxis are readily available and quicker door-to-door, while buses are a cheaper but slower alternative. Car rental and chauffeur services are also available at the airport for those who prefer driving.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://en.wikipedia.org/wiki/Lisbon_Airport",
            "title": "Lisbon Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-14T10:27:02Z"
          },
          {
            "url": "https://lisbon-lis.airports-guides.com",
            "title": "Lisbon Portela Airport (LIS) Information: LIS Airport in Lisbon Area, Portugal",
            "favicon": "http://www.airports-guides.com/favicon.ico"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Transport_in_Portugal",
            "title": "Transport in Portugal",
            "time_published": "2026-05-04T23:32:13Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Lisbon_Metro_Red_Line",
            "title": "Lisbon Metro Red Line",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-05-25T05:54:05Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Trams_in_Lisbon",
            "title": "Trams in Lisbon",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-08-15T23:13:49Z"
          }
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Chicago to Lisbon?",
        "answer": "Yes, TAP Air Portugal operates nonstop red‑eye flights from Chicago O'Hare (ORD) to Lisbon (LIS) four times a week — on Wednesdays, Fridays, and Sundays — with departures around 8:10–8:15 PM. These are overnight services that arrive the next morning.",
        "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 Chicago to Lisbon?",
        "answer": "TAP Air Portugal flies nonstop from Chicago O'Hare to Lisbon, with about 12 weekly flights on Wednesdays, Thursdays, Fridays, Saturdays, and Sundays. Departures are typically in the evening, between 6:00 PM and 8:15 PM. Other carriers may also serve the route with connections, but TAP 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 Chicago and Lisbon?",
        "answer": "Common layover cities include Lisbon-bound flights often connect through European hubs like Madrid, Barcelona, London, and Paris. These offer broad connections and efficient transfers, with Madrid and Barcelona being particularly well-positioned for onward flights to Lisbon."
      },
      "q10": {
        "question": "Which months have the best weather for traveling to Lisbon?",
        "answer": "May, June, and September offer sunny, mild weather and fewer visitors than the peak summer months."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Chicago to Lisbon?",
        "answer": "Bring a passport valid for at least three months beyond your stay, and if a U.S. citizen, no visa is needed for up to 90 days; have proof of onward or return travel, a payment method for baggage, and any required vaccination certificates."
      },
      "q12": {
        "question": "Which airport should I use in Lisbon?",
        "answer": "Lisbon has only one airport, Humberto Delgado Airport, which serves all flights to the city and is conveniently located about seven kilometres from the downtown and main attractions."
      },
      "q13": {
        "question": "How do I get to Dupage County from the city center?",
        "answer": "The CTA Blue Line train runs 24 hours from downtown Chicago directly to O'Hare and is the most popular and economical option, taking about 40 minutes from the Loop. Metra's North Central Service offers weekday commuter rail from Union Station to the O'Hare Transfer Station, while Pace suburban buses connect from the Multi-Modal Facility. Taxis, limos, and ride-shares are readily available and are the fastest door-to-door choice, and driving via the Kennedy Expressway with on-site parking (hourly, daily, or economy lots) is also common.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://flychicago.com/ohare/tofrom/publictransit/Pages/default.aspx",
            "title": "Public Transit | Chicago O’Hare International Airport (ORD)",
            "favicon": "https://flychicago.com/_catalogs/masterpage/favicon.ico"
          },
          {
            "url": "https://flychicago.com/ohare/tofrom/pages/default.aspx",
            "title": "Getting To and From O'Hare International Airport | Chicago O’Hare International Airport (ORD)",
            "favicon": "https://flychicago.com/_catalogs/masterpage/favicon.ico"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Transportation_in_Chicago",
            "title": "Transportation in Chicago",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-01T15:50:47Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/O%27Hare_International_Airport",
            "title": "O'Hare International Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-11T09:41:03Z"
          },
          {
            "url": "https://www.flychicago.com/ohare/home/pages/default.aspx",
            "title": "O’Hare International Airport",
            "favicon": "https://www.flychicago.com/_catalogs/masterpage/favicon.ico"
          }
        ]
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at Lisbon airport?",
        "answer": "Lisbon Airport has two hotels located next to Terminal 1 and within walking distance: the Melia Lisboa Aeroporto Hotel, an upscale option, and Star Inn Lisboa, a mid-range hotel, both of which include an airport shuttle. Several other hotels are a short drive away, including the Holiday Inn Express Lisbon Airport and the ibis Styles Lisboa Aeroporto.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://sleepinginairports.net/guides/lisbon-airport-guide.htm",
            "title": "Lisbon Airport Guide (LIS) - 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": "2018-09-02T00:00:05Z"
          },
          {
            "url": "https://www.sleepinginairports.net/hotels/lisbon-airport-hotels.htm",
            "title": "Lisbon Airport Guide (LIS) - Sleeping in Airports",
            "time_published": "2026-04-13T18:11:40Z"
          }
        ]
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Humberto Delgado Airport (Lisbon Portela Airport)?",
        "answer": "Humberto Delgado Airport (Lisbon Portela Airport) offers currency exchange offices in Terminal 1, with several bureaux de change located in both the arrivals and departures areas. Prayer rooms and chapels are available airside in Terminal 1, providing a quiet space for reflection. Free Wi-Fi is provided throughout both terminals, with unlimited access after a simple registration.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://lisbon-lis.airports-guides.com",
            "title": "Lisbon Portela Airport (LIS) Information: LIS Airport in Lisbon Area, Portugal",
            "favicon": "http://www.airports-guides.com/favicon.ico"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Lisbon_Airport",
            "title": "Lisbon Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-14T10:27:02Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/List_of_the_busiest_airports_in_Portugal",
            "title": "List of the busiest airports in Portugal",
            "time_published": "2025-05-22T19:00:42Z"
          }
        ]
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Chicago and Lisbon airports?",
        "answer": "Lisbon Portela Airport offers shuttle services to transport travelers around the airport, and travelers requiring mobility assistance on this route should arrange it through their airline at least 48 hours before the flight.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://en.wikipedia.org/wiki/DuPage_Airport",
            "title": "DuPage Airport",
            "time_published": "2026-07-16T20:45:00Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/York_Township,_DuPage_County,_Illinois",
            "title": "York Township, DuPage County, Illinois",
            "time_published": "2026-03-30T14:23:39Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/DuPage_County,_Illinois",
            "title": "DuPage County, Illinois",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-01T17:35:34Z"
          },
          {
            "url": "https://lisbon-lis.airports-guides.com",
            "title": "Lisbon Portela Airport (LIS) Information: LIS Airport in Lisbon Area, Portugal",
            "favicon": "http://www.airports-guides.com/favicon.ico"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Lisbon_Airport",
            "title": "Lisbon Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-14T10:27:02Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Port_of_Lisbon",
            "title": "Port of Lisbon",
            "time_published": "2026-05-17T01:54:27Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Lisbon_Luís_de_Camões_Airport",
            "title": "Lisbon Luís de Camões Airport",
            "time_published": "2026-07-07T19:34:51Z"
          }
        ]
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Chicago to Lisbon?",
        "answer": "TAP Air Portugal operates the nonstop route from Chicago O'Hare to Lisbon using the Airbus A330-900neo. No other carrier currently flies this route nonstop.",
        "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 Chicago to Lisbon?",
        "answer": "TAP Air Portugal, a Star Alliance member, is the only airline flying nonstop from Chicago (ORD) to Lisbon. Other alliances may serve the route via connections, but no other carriers operate it nonstop.",
        "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 Chicago?",
        "answer": "When departing from Chicago O'Hare, you have several lounge options, including the Air France Lounge in Terminal 5 near Gate M17 for Air France Business, Flying Blue Elite Plus, eligible KLM travelers, and SkyTeam Elite Plus members traveling on SkyTeam alliance. American Airlines offers Admiral's Clubs in Terminal 3 at Gates G8 and L2A, plus a Flagship Lounge at Gates H6/K6, while Delta has a Sky Club in Terminal 5 at Gate M13. There is also a LOT Business Lounge at Gate M18 for Turkish Airlines, LOT, and Star Alliance business class travelers, a Wingtips Lounge near Gate M19 serving many airlines including United and SkyTeam Elite Plus members, a Swissport Lounge at Gate M18 for Priority Pass customers and several airlines, and United Clubs in Terminals 1 and 2 along with a Polaris Lounge at Gate C18 for international first and business class only.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://flychicago.com/ohare/ServicesAmenities/services/Pages/lounges.aspx",
            "title": "Airline Lounges | Chicago O’Hare International Airport  (ORD)",
            "favicon": "https://flychicago.com/_catalogs/masterpage/favicon.ico"
          },
          {
            "url": "https://prioritypass.com/en-GB/lounges/united-states-of-america/ohare-international",
            "title": "O'hare International Airport ORD Lounges - ORD Airport Guide and lounges. | Priority Pass",
            "favicon": "https://prioritypass.com/icon.png?icon.1k7202wk2zqql.png?dpl=1f82db4e-b1f8-481b-b911-c24ef915cc46",
            "time_published": "2026-08-18T11:40:12Z"
          },
          {
            "url": "https://www.delta.com/us/en/airports/united-states/chicago-sky-club-airport-map",
            "title": "Chicago O'Hare (ORD) Airport Map & Lounges | Delta Air Lines",
            "favicon": "https://www.delta.com/content/dam/delta-applications/dlhome/favicon.ico"
          },
          {
            "url": "https://www.prioritypass.com/en-GB/lounges/united-states-of-america/ohare-international/ord10-swissport-lounge",
            "title": "Swissport Lounge ORD AIRPORT Terminal 5 Chicago IL O Hare Intl | Priority Pass",
            "favicon": "https://www.prioritypass.com/icon.png?a4ff481221414a5c"
          },
          {
            "url": "https://aa.com/i18n/travelInformation/airportAmenities/ord-club.jsp",
            "title": "Chicago, IL (ORD)",
            "favicon": "https://aa.com/content/images/chrome/rebrand/favicon.png"
          }
        ]
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Chicago to Lisbon?",
        "answer": "Baggage allowance on flights from Chicago to Lisbon depends on the airline and fare type. Basic Economy tickets are restrictive and may not include a checked bag. Standard international economy fares typically include one free checked bag and a carry‑on, while premium cabins offer more generous allowances."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Chicago to Lisbon?",
        "answer": "Flights from Chicago to Lisbon typically offer Economy and flat-bed Business class. Premium Economy is available on select airlines; First class is rare."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies vary by airline and fare; flexible and premium tickets typically allow same‑day changes or standby, while Basic Economy generally does not."
      }
    }
  }
}