{
  "response": {
    "Key": "LIS-IAD",
    "orig": {
      "code": "LIS",
      "type": "airport",
      "city": "Lisbon",
      "fullCity": "Lisbon, Portugal",
      "airport": "Humberto Delgado Airport"
    },
    "dest": {
      "code": "IAD",
      "type": "airport",
      "city": "Washington",
      "fullCity": "Washington, United States",
      "airport": "Washington Intl Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Lisbon to Washington?",
        "answer": "A nonstop flight from Lisbon to Washington Dulles typically takes about 8 hours and 25 minutes. The return leg is shorter, at around 7 hours and 10 minutes, because of prevailing tailwinds. The route is about 3,580 miles.",
        "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 Lisbon to Washington?",
        "answer": "Yes, TAP Air Portugal and United both fly nonstop from Lisbon to Washington Dulles. TAP runs up to 22 flights a week with multiple daily departures, while United operates 14 weekly flights, and both airlines fly daily.",
        "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"
        ]
      },
      "q3": {
        "question": "What are the ground transportation options in Washington?",
        "answer": "Washington Dulles (IAD) offers the Silver Line Metrorail directly from the terminal via an indoor pedestrian tunnel with moving sidewalks, making it a fast and reliable option to reach downtown DC. Taxis, ride-share services like Uber and Lyft, and rental cars are also available, with the Dulles Access Road providing a direct highway link to the Capital Beltway. The Metrorail is generally the most used and cost-effective choice for solo travelers, while taxis or ride-shares are faster for groups or those with heavy luggage. Car rentals are best if you plan to explore beyond the city.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.flydulles.com/parking-transportation",
            "title": "flydulles.com - Parking & Transportation",
            "favicon": "https://www.flydulles.com/themes/custom/mwaa_barrio/favicon.ico"
          },
          {
            "url": "https://www.flydulles.com/metro",
            "title": "flydulles.com - Dulles Airport Metrorail Station",
            "favicon": "https://www.flydulles.com/themes/custom/mwaa_barrio/favicon.ico"
          },
          {
            "url": "https://www.flydulles.com/",
            "title": "Official Website of Washington Dulles International Airport - IAD",
            "favicon": "https://www.flydulles.com/themes/custom/mwaa_barrio/favicon.ico"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Dulles_International_Airport",
            "title": "Dulles International Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-18T13:47:09Z"
          },
          {
            "url": "https://flydulles.com/shopping-dining",
            "title": "flydulles.com - Shopping & Dining",
            "favicon": "https://flydulles.com/themes/custom/mwaa_barrio/favicon.ico"
          }
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Lisbon to Washington?",
        "answer": "No overnight or red‑eye flights operate on the Lisbon to Washington Dulles route — neither nonstop nor connecting itineraries with a red‑eye long leg are scheduled.",
        "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 Lisbon to Washington?",
        "answer": "TAP Air Portugal and United operate nonstop from Lisbon to Washington Dulles. TAP flies up to 22 times a week with a typical fare around $1,281, while United offers 14 weekly flights with a median fare of about $912. Both carriers run daily service, with TAP departures concentrated around late morning and mid‑afternoon and United departing around midday.",
        "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 Lisbon and Washington?",
        "answer": "Common layover cities include London, Frankfurt, Paris, and Amsterdam. These hubs offer broad connections and efficient transfers, and you can transit visa-free with a US visa or under their respective transit policies. London Heathrow provides extensive transatlantic links, while Frankfurt, Paris, and Amsterdam are well-organized for quick connections."
      },
      "q10": {
        "question": "Which months have the best weather for traveling to Washington?",
        "answer": "April to June and September to October offer mild temperatures, blooming or fall foliage, and fewer tourists than summer."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Lisbon to Washington?",
        "answer": "Bring a passport valid for the duration of your stay, a valid ESTA authorization or visa, proof of onward or return travel, payment for baggage, and any required vaccination certificates."
      },
      "q12": {
        "question": "Which airport should I use in Washington?",
        "answer": "Washington Dulles is the primary international gateway and the airport referenced in your route. Reagan National is closer to downtown and the National Mall but mainly serves domestic and a few international flights. Baltimore/Washington handles low-cost carriers and is farther from central Washington."
      },
      "q13": {
        "question": "How do I get to Humberto Delgado Airport from the city center?",
        "answer": "From central Lisbon, the fastest and most popular way to reach Humberto Delgado Airport is the metro, with the Aeroporto station on the Red Line taking about 20 minutes to downtown and connecting directly to Terminal 1. City buses run from the arrivals area to major squares like Marquis of Pombal, and taxis are available 24 hours a day with a roughly 15-minute ride to the city center. Driving is easy via major highways, with covered and open parking operated by ANA, though parking can be pricey. Ride-share services like Uber and Bolt also serve the airport, offering a middle-ground cost between taxis and public transit.",
        "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"
          }
        ]
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at Washington airport?",
        "answer": "Washington Dulles International Airport has a hotel inside the airport, as the nearest hotel is listed as 'Inside the Airport.' The airport also has several nearby hotels with free shuttle service, including the Washington Dulles Airport Marriott, Hyatt Regency Dulles International, Courtyard by Marriott Dulles Airport Herndon, Sonesta ES Suites Dulles Airport, and Spark by Hilton Dulles Airport. Day rooms are available, but there are no sleep cabins or pods.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.sleepinginairports.net/guides/washington-dulles-airport-guide.htm",
            "title": "Washington Dulles Airport Guide (IAD) - 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": "2018-08-08T21:11:21Z"
          },
          {
            "url": "https://ihg.com/holidayinn/hotels/gb/en/dulles/wasda/hoteldetail/amenities",
            "title": "Holiday Inn Washington-Dulles Intl Airport - Free Internet & More",
            "favicon": "https://digital.ihg.com/is/image/ihg/app-web-chiclet-holidayinn?fmt=png-alpha"
          },
          {
            "url": "https://www.flydulles.com/",
            "title": "Official Website of Washington Dulles International Airport - IAD",
            "favicon": "https://www.flydulles.com/themes/custom/mwaa_barrio/favicon.ico"
          },
          {
            "url": "https://ihg.com/washington-district-of-columbia/hotels-near-washington-dulles-international",
            "title": "47 Hotels Near IAD Washington Dulles International (IAD) Airport | IHG",
            "favicon": "https://digital.ihg.com/is/image/ihg/app-web-chiclet-ihg?fmt=png-alpha"
          }
        ]
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Washington Intl Airport?",
        "answer": "Washington Dulles International Airport (IAD) offers free Wi‑Fi throughout the terminal. Currency exchange offices are available at IAD, with locations marked on the airport's shopping and dining directory. Specific prayer room or chapel locations are not listed in the available directory.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://flydulles.com/shopping-dining-advanced-directory",
            "title": "Shopping & Dining Advanced Directory | flydulles.com",
            "favicon": "https://flydulles.com/themes/custom/mwaa_barrio/favicon.ico"
          },
          {
            "url": "https://www.flydulles.com/",
            "title": "Official Website of Washington Dulles International Airport - IAD",
            "favicon": "https://www.flydulles.com/themes/custom/mwaa_barrio/favicon.ico"
          },
          {
            "url": "https://flydulles.com/travel-information/services-amenities/airport-lounges/capital-one-lounge-iad",
            "title": "Capital One Lounge - IAD | flydulles.com",
            "favicon": "https://flydulles.com/themes/custom/mwaa_barrio/favicon.ico"
          },
          {
            "url": "https://www.mwaa.com/iad-rfi",
            "title": "mwaa.com - US DOT Request for Information to Revitalize Washington Dulles International Airport",
            "favicon": "https://www.mwaa.com/themes/custom/mwaa_barrio/favicon.ico"
          },
          {
            "url": "https://flydulles.com/shopping-dining",
            "title": "flydulles.com - Shopping & Dining",
            "favicon": "https://flydulles.com/themes/custom/mwaa_barrio/favicon.ico"
          }
        ]
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Lisbon and Washington airports?",
        "answer": "At Washington Dulles (IAD), accessible shuttle buses and rental car shuttles are equipped with wheelchair lifts/ramps, the Hidden Disabilities Sunflower Program offers discreet lanyards for invisible disabilities (available from the USO Lounge or information desks daily 8 AM–8 PM), and wheelchair assistance can be arranged through your airline at the airport. At Lisbon Portela (LIS), the airport provides shuttle transport for mobility assistance and accessible taxi service, with assistance generally requested through your airline or the airport's reduced mobility service at least 48 hours in advance. Children's play areas are not specifically documented in the available information for either airport, though both terminals offer family-friendly facilities through their standard services.",
        "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/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"
          },
          {
            "url": "https://www.flydulles.com/iad/disability-services",
            "title": "flydulles.com - Disability Services",
            "favicon": "https://www.flydulles.com/themes/custom/mwaa_barrio/favicon.ico"
          },
          {
            "url": "https://www.flydulles.com/",
            "title": "Official Website of Washington Dulles International Airport - IAD",
            "favicon": "https://www.flydulles.com/themes/custom/mwaa_barrio/favicon.ico"
          },
          {
            "url": "https://www.mwaa.com/",
            "title": "Official Website of Metropolitan Washington Airports Authority - MWAA",
            "favicon": "https://www.mwaa.com/themes/custom/mwaa_barrio/favicon.ico",
            "time_published": "2026-08-26T00:00:00Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Dulles_International_Airport",
            "title": "Dulles International Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-18T13:47:09Z"
          },
          {
            "url": "https://www.mwaa.com/policefireems/fire-ems/fire-ems-washington-dulles-international-airport",
            "title": "mwaa.com - Fire & EMS at Washington Dulles International Airport",
            "favicon": "https://www.mwaa.com/themes/custom/mwaa_barrio/favicon.ico"
          }
        ]
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Lisbon to Washington?",
        "answer": "TAP Air Portugal flies the Lisbon to Washington route using Airbus A321neo aircraft. United Airlines also serves the route, but its aircraft type is not listed in the schedule data.",
        "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 Lisbon to Washington?",
        "answer": "Nonstop flights from Lisbon to Washington are operated by TAP Air Portugal and United Airlines, both members of Star Alliance. No other alliances offer nonstop service on this route, and neither carrier is unaffiliated.",
        "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 Lisbon?",
        "answer": "The ANA Lounge in Terminal 1 is the lounge option at Lisbon Airport, open from 04:00 to 23:00 and rated 4.1.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://prioritypass.com/en-GB/lounges/portugal/lisbon-portela",
            "title": "Lisbon Airport LIS Lounges - LIS Airport Guide and lounges. | Priority Pass",
            "favicon": "https://prioritypass.com/icon.png?a4ff481221414a5c",
            "time_published": "2026-06-30T08:24:25Z"
          },
          {
            "url": "https://prioritypass.com/de-DE/lounges/portugal/lisbon-portela",
            "title": "Lisbon Airport LIS Lounges - LIS Airport Guide and lounges. | Priority Pass",
            "favicon": "https://prioritypass.com/icon.png?a4ff481221414a5c"
          },
          {
            "url": "https://americanexpress.com/en-us/travel/lounges/the-platinum-card/LIS",
            "title": "American Express Lounges at Lisbon Portela Airport | Amex US",
            "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png"
          },
          {
            "url": "https://americanexpress.com/en-ca/travel/lounges/the-platinum-card/LIS",
            "title": "American Express Lounges at Lisbon Portela Airport | Amex CA",
            "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png"
          },
          {
            "url": "https://aa.com/i18n/travelInformation/destinationInformation/lis-airport.jsp",
            "title": "Lisbon, Portugal (LIS)",
            "favicon": "https://aa.com/content/images/chrome/rebrand/favicon.png"
          }
        ]
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Lisbon to Washington?",
        "answer": "Baggage allowance on Lisbon to Washington flights varies by airline and fare class. Basic economy fares often exclude checked bags, while standard international economy typically includes one checked bag and a carry-on. Premium cabins generally offer two checked bags and larger carry-on allowances."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Lisbon to Washington?",
        "answer": "On flights from Lisbon to Washington Dulles, you can typically choose Economy, Premium Economy, and flat-bed Business class."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies differ by airline and fare; flexible and premium tickets often allow same‑day changes or standby, while Basic Economy typically does not."
      }
    }
  }
}