{"response": {"Key": "KEF-WAS", "orig": {"code": "KEF", "type": "airport", "city": "Reykjavík", "fullCity": "Reykjavík, Iceland", "airport": "Keflavik Intl Airport"}, "dest": {"code": "WAS", "type": "airport", "city": "Washington", "fullCity": "Washington, United States", "airport": "Ronald Reagan National Airport"}, "faq": {"q0": {"question": "What is the typical flight duration from Reykjavík to Washington?", "answer": "The flight from Reykjavík to Washington is about 2,790 miles and typically takes 6 hours 40 minutes outbound, with the return leg at 5 hours 55 minutes, making the westbound trip about 45 minutes longer.", "methodology": "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": ["flight_schedule"]}, "q3": {"question": "What are the ground transportation options in Washington?", "answer": "Washington Dulles (IAD) is 26 miles from downtown DC, with the Silver Line Metrorail being the most used and reliable option — take the $5 Silver Line Express bus from Arrivals Door #4 to the Wiehle-Reston East station, then the train into the city. Taxis operated by Washington Flyer are available 24/7 from Doors 2 or 6, and ride shares like Uber and Lyft can pick up curbside. Shared vans (SuperShuttle, Supreme Shuttle) offer a middle ground, while rental cars are on-site for those wanting to drive. The Metrorail is the fastest and most popular choice, though it doesn't run overnight.", "toolsUsed": [], "references": [{"url": "https://flydulles.com/flight-schedule-dulles-international-airport-iad", "title": "flydulles.com - Flight Schedule - Dulles International Airport (IAD)", "time_published": "2022-03-01T00:00:00Z"}, {"url": "https://parking.flydulles.com/economy-parking", "title": "Dulles International Airport Parking | Economy Parking", "time_published": "2026-02-06T00:00:00Z"}, {"url": "https://www.mwaa.com/ipw-2017-archived", "title": "IPW 2017 - Archived", "time_published": "2021-02-01T00:00:00Z"}, {"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", "time_published": "2023-09-01T00:00:00Z"}, {"url": "https://en.wikipedia.org/wiki/Dulles%20International%20Airport", "title": "Dulles International Airport", "time_published": "2026-04-30T14:07:38Z"}]}, "q4": {"question": "When is the cheapest time to fly from Reykjavík to Washington?", "answer": "The cheapest months to fly from Reykjavík to Washington are September, October, and November, with average fares as low as $467. The most expensive months are June, May, and March, with averages peaking at $757.", "methodology": "This 'good deal' estimate shows a representative best price for each departure date across roughly a 12-month window (about 3 months back and 9 months forward). It is built from real flight prices found by Priceline users searching this route, accumulated into a price history for each departure date. Rather than weighting all of that history equally, we apply exponential time decay so recent prices dominate — a price seen yesterday counts almost in full, one from about a month ago roughly a third, and prices from a few months back very little — giving a figure that tracks today's market instead of a stale long-run average. Clear price outliers are removed before any calculation, departure dates with no observations are filled in from nearby dates, and the resulting curve is lightly smoothed so it reads as a clean seasonal trend rather than day-to-day noise. For this route, fares for the requested travel direction were unavailable, so the pattern shown is derived from the reverse direction, which shares the same seasonal demand cycle.", "toolsUsed": ["seasonal_prices"]}, "q5": {"question": "How far in advance should I book tickets from Reykjavík to Washington?", "answer": "For flights from Reykjavík to Washington, the optimal booking window is about 11 to 14 weeks before departure, when average fares drop to around $740. The cheapest single price appears around 85 days out at $735, while waiting until the last minute can push prices above $950. During peak summer and holiday periods, demand is higher, so aiming for the earlier end of that window—or even a bit sooner—can help lock in a better rate.", "methodology": "This booking-window guidance is built from the same real flight prices found by Priceline users searching this route, re-grouped by how many days before departure each price was seen (from the departure day out to about 180 days ahead) across the route's price history. At each booking lead time we report the 25th-percentile price — the cheaper end of what travelers were quoted, rather than the rock-bottom minimum (which can be a fluke) or the average (which is pulled up by expensive last-minute fares). The buy-or-wait advice then applies a risk premium that grows as departure approaches, since seat availability shrinks and prices become less predictable; using that adjusted curve we flag windows where waiting is likely to save a meaningful amount (at least $20 or 5%) versus windows where booking now is the better call. Isolated single-day recommendations are filtered out, so the advice only reflects a window that holds for several days in a row. For this route, fares for the requested travel direction were unavailable, so the pattern shown is derived from the reverse direction, which shares the same seasonal demand cycle.", "toolsUsed": ["booking_timing"]}, "q6": {"question": "Are overnight (red‑eye) flights available from Reykjavík to Washington?", "answer": "No overnight (red-eye) flights are available from Reykjavík (KEF) to Washington (WAS) — neither nonstop nor connecting itineraries with a red-eye long leg operate on this route.", "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 Reykjavík to Washington?", "answer": "Icelandair and United both fly nonstop from Reykjavík (KEF) to Washington, with flights arriving at Dulles (IAD). Icelandair operates about 10 flights per week with daily afternoon and evening departures, while United runs a daily morning service. No median fares are available for these nonstop flights, so typical prices aren't listed here.", "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"]}, "q8": {"question": "If I need a connection, what are common layover cities between Reykjavík and Washington?", "answer": "Common layovers include Boston, New York, Toronto and London. Boston and New York offer quick onward flights and US preclearance for efficient connections. Toronto provides a smooth transit with US preclearance. London offers broad connections but adds travel time; confirm any visa requirements for UK transit."}, "q10": {"question": "Which months have the best weather for traveling to Washington?", "answer": "April, May, September, and October offer pleasant temperatures and lighter tourist traffic, avoiding summer heat and humidity."}, "q11": {"question": "What documents should I bring with me to the airport when flying from Reykjavík to Washington?", "answer": "Bring a passport valid for your stay, an ESTA authorization, proof of onward or return travel, a payment method for baggage, and any required vaccination certificates."}, "q12": {"question": "Which airport should I use in Washington?", "answer": "Washington Dulles is the primary international gateway, about 26 miles west of downtown, with flights from many foreign carriers. Ronald Reagan Washington National is much closer to central DC and the monuments but handles mainly domestic flights with a few international exceptions. Baltimore/Washington International is farthest north but offers a mix of domestic and some international low‑cost services."}, "q13": {"question": "How do I get to Keflavik Intl Airport from the city center?", "answer": "From Reykjavík city center, the most popular and fastest option is the Flybus airport shuttle, which takes about 45 minutes and offers hotel pick-up. Public bus route 55 also runs between the capital and the airport, taking around 75 minutes and costing less than the shuttle. Taxis and ride-shares are available but are the most expensive choice, while driving yourself is possible with parking at the airport.", "toolsUsed": [], "references": [{"url": "https://en.wikipedia.org/wiki/Keflavík", "title": "Keflavík", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-05-21T05:54:11Z"}, {"url": "https://en.wikipedia.org/wiki/Keflav%C3%ADk%20International%20Airport", "title": "Keflavík International Airport", "time_published": "2026-04-24T20:36:26Z"}, {"url": "https://en.wikipedia.org/wiki/List_of_airports_in_Iceland", "title": "List of airports in Iceland", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-06-04T11:34:25Z"}, {"url": "https://en.wikipedia.org/wiki/City%20Airport%20Train", "title": "City Airport Train", "time_published": "2026-03-03T11:01:10Z"}, {"url": "https://en.wikipedia.org/wiki/File:BIKF_Layout.svg", "time_published": "2024-05-11T00:00:00Z"}]}, "q14": {"question": "Are there hotels or sleeping facilities at Washington airport?", "answer": "Washington Dulles International Airport has a Sleepbox Lounge airside with 16 sound-proof rooms, but no traditional on-site hotel or capsule hotel inside the terminal. The Washington Dulles Airport Marriott is located on airport grounds and offers a free shuttle every 15 minutes, providing a convenient option for a full-service hotel stay.", "toolsUsed": [], "references": [{"url": "https://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://www.sleepinginairports.net/sleep-guide/sleeping-in-washington-dulles-airport.htm", "title": "Sleeping in Washington Dulles Airport", "time_published": "2024-09-12T00:00:00Z"}, {"url": "https://www.marriott.com/en-us/hotels/iadap-washington-dulles-airport-marriott/overview/?scid=d2406702-e8ea-4b45-bb9b-69", "title": "Hotel near IAD Airport | Washington Dulles Airport Marriott", "time_published": "2025-02-19T00:00:00Z"}, {"url": "https://www.marriott.com/en-us/hotels/iadap-washington-dulles-airport-marriott/overview/?scid=f2ae0541-1279-4f24-b197-a979c79310b0", "title": "Hotel near IAD Airport | Washington Dulles Airport Marriott", "time_published": "2024-10-11T00:00:00Z"}, {"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", "time_published": "2026-07-17T00:00:00Z"}, {"url": "https://www.airportsdata.net/airport-IAD-accommodation/", "title": "Sleeping at Dulles airport - Washington D.C.", "time_published": "2025-12-01T00:00:00Z"}]}, "q17": {"question": "What aircraft are typically used on flights from Reykjavík to Washington?", "answer": "The most common aircraft on nonstop flights from Reykjavík to Washington are the Boeing 737 MAX 8 and 737 MAX 9, both operated by Icelandair, and the Boeing 757-200, operated by United. On connecting itineraries the long-haul leg is also typically a 737 MAX 8 or 757-200, with common connection points including Toronto, Montreal, Detroit, and Chicago. Wi‑Fi and seatback entertainment are widely available on these aircraft, though the exact features can vary by airline and specific configuration.", "methodology": "Aircraft types are taken from the equipment each operating carrier schedules on this route, drawn from published airline timetables and airline equipment schedules in our flight-schedule database. They describe typical scheduled aircraft and can vary with seasonal or day-of-week assignments and last-minute equipment swaps.", "toolsUsed": ["route_aircraft"]}, "q18": {"question": "Which airline alliances serve flights from Reykjavík to Washington?", "answer": "Star Alliance serves the route nonstop through United Airlines, while Icelandair also flies it nonstop but belongs to no global alliance. Other alliances may offer connecting itineraries, but United and Icelandair are the only carriers operating nonstop between Reykjavík and Washington.", "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 Reykjavík?", "answer": "At Keflavík International Airport, the main lounge option is the Icelandair Saga Lounge, accessible to Saga Class passengers, Saga Gold and Silver members, and eligible partner airline elites, featuring Icelandic design, a bar, and views of the runway. Additionally, Priority Pass members can access the ELDA restaurant airside, which offers a dining credit instead of a traditional lounge, serving classic Icelandic dishes. There are no other airline-branded lounges like Delta Sky Club or United Club at this airport.", "toolsUsed": [], "references": [{"url": "https://www.prioritypass.com/en-GB/lounges/iceland/keflavik-international", "title": "Keflavík International Airport KEF Lounges - KEF Airport Guide and lounges. | Priority Pass", "time_published": "2024-11-05T00:00:00Z"}, {"url": "https://my.prioritypass.com:443/en-GB/lounges/iceland/keflavik-international/kef1d-elda", "title": "ELDA KEF AIRPORT Reykjavik Keflavik International | Priority Pass", "time_published": "2024-11-05T00:00:00Z"}, {"url": "https://en.wikipedia.org/wiki/Keflavík", "title": "Keflavík", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-05-21T05:54:11Z"}, {"url": "https://en.wikipedia.org/wiki/Keflav%C3%ADk%20International%20Airport", "title": "Keflavík International Airport", "time_published": "2026-04-24T20:36:26Z"}, {"url": "https://www.lufthansa.com/lhg/lv/en/dest/cy/reykjavik", "title": "Flight to Reykjavík (KEF) | Lufthansa", "time_published": "2023-11-10T00:00:00Z"}]}, "q21": {"question": "What is the baggage allowance on this route from Reykjavík to Washington?", "answer": "On Reykjavík–Washington flights, baggage rules depend on the airline and fare class. Basic economy fares may not include a checked bag; standard international economy often includes one checked bag and a carry‑on. Premium cabins provide more generous allowances."}, "q22": {"question": "What cabin and seat options are typical from Reykjavík to Washington?", "answer": "Flights from Reykjavík to Washington typically offer Economy and flat-bed Business class; Premium Economy is not common on this route."}, "q23": {"question": "Are same‑day changes or standby possible on this route?", "answer": "Policies vary by airline and fare; flexible and higher cabins often allow same‑day changes or standby, while basic economy tickets typically do not."}}}}