{"response": {"Key": "DEL-IAD", "orig": {"code": "DEL", "type": "airport", "city": "Delhi", "fullCity": "Delhi, India", "airport": "Indira Gandhi Intl 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 Delhi to Washington?", "answer": "The flight from Delhi to Washington covers about 7,490 miles. There are no scheduled nonstop flights on this route, so the journey requires a connection; approximate total travel time is typically 18 to 22 hours depending on the layover.", "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": "Dulles offers several ground transportation options: taxis (Washington Flyer, 24/7, flat-rate to downtown around $70), ride-share (Uber/Lyft), shared vans (SuperShuttle, Supreme Shuttle), and public transit via the Silver Line Express bus to the Wiehle-Reston East Metro station ($5, then Metrorail to downtown). The Silver Line Metro extension now directly serves the airport, making rail the most used and often fastest option, especially during peak traffic. Rental cars and limousine services are also available.", "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 Delhi to Washington?", "answer": "The cheapest months to fly from Delhi to Washington are September, April, and October, with average fares around $806, $827, and $845 respectively. The most expensive months are December, June, and July, when average fares climb to $1,191, $1,131, and $1,052.", "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 Delhi to Washington?", "answer": "For Delhi to Washington, book 9–11 weeks ahead for the best fare, with an average around $980 — the absolute lowest price was $974 at about 9 weeks out. During peak summer (June–August) and the December holiday season, prices tend to rise sharply, so booking 11–14 weeks ahead is safer for those periods.", "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 Delhi to Washington?", "answer": "No nonstop red‑eyes operate from Delhi to Washington, but one‑stop itineraries whose long leg is an overnight flight are available. Air Canada offers a red‑eye departing Delhi at 22:50 and arriving in Toronto at 05:30, connecting onward to Washington Dulles (1h50m layover); United has a red‑eye departing Delhi at 23:35 and arriving in Newark at 06:20, with a connection to Dulles (1h55m layover). Ethiopian Airlines also operates a red‑eye from Addis Ababa to Dulles (departing 22:50, arriving 08:55), though the layover in Addis is long at about 9 hours.", "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 Delhi to Washington?", "answer": "There is no nonstop service from Delhi to Washington, so all flights connect. Common one-stop routings include Air Canada via Toronto (about 12 daily connections, operated by Air Canada or United on the second leg), Emirates via Dubai (4 daily connections), United via Zurich (with Swiss on the first leg, 4 daily), Air France via Paris (4 daily), and United via Newark (4 daily). Other carriers like Lufthansa via Frankfurt or Munich, Swiss via Zurich, and Ethiopian via Addis Ababa also appear, each with 1–2 daily connections. Per-carrier fares are not available for this route.", "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 Delhi and Washington?", "answer": "Common layovers include Dubai, Doha, London, and Frankfurt. Dubai and Doha offer extensive connections and efficient transfers, while London and Frankfurt provide broad European networks and smooth transit for eligible passengers. US citizens and many others can transit visa-free in the UK and Schengen area under certain conditions."}, "q10": {"question": "Which months have the best weather for traveling to Washington?", "answer": "April to May and September to October offer pleasant temperatures and fewer tourists than summer."}, "q11": {"question": "What documents should I bring with me to the airport when flying from Delhi to Washington?", "answer": "Bring a passport valid for at least six months, a U.S. visa or ESTA, proof of onward or return travel, a payment method for baggage and any required vaccination or insurance documents."}, "q12": {"question": "Which airport should I use in Washington?", "answer": "Dulles International is the primary international gateway for Washington, located about 26 miles west of downtown. Reagan National is much closer to the city centre and the National Mall but mainly handles domestic flights with limited international service. Baltimore/Washington International is farther northeast, often used for low-cost carriers and additional domestic options."}, "q13": {"question": "How do I get to Indira Gandhi Intl Airport from the city center?", "answer": "From central Delhi, the Delhi Metro's Airport Express Line is the fastest and most popular way to reach Indira Gandhi International Airport, offering a quick, air-conditioned ride from New Delhi Railway Station to the terminal. Public buses, including DTC and private coach services, provide a more economical alternative with citywide connections. Ride-share apps like Uber and Ola, along with prepaid and metered taxis, offer door-to-door convenience at a moderate cost, while driving yourself is possible with both short-term and long-term parking available at the airport.", "toolsUsed": [], "references": [{"url": "https://hongkongairport.com/sites/en/passenger-guide/overseas-airports-information/delhi.page", "title": "Delhi Indira Gandhi International Airport, Passenger Guide - Hong Kong International Airport", "favicon": "https://hongkongairport.com/iwov-resources/image/common/icon/favicon.ico"}, {"url": "https://en.wikipedia.org/wiki/Indira%20Gandhi%20International%20Airport", "title": "Indira Gandhi International Airport", "time_published": "2026-05-01T11:11:01Z"}, {"url": "https://www.civilaviation.gov.in/taxonomy/term/180", "title": "Indira Gandhi International Airport, Delhi | Ministry of Civil Aviation", "time_published": "2026-03-30T10:57:53Z"}, {"url": "https://en.wikipedia.org/wiki/Transport_in_Delhi", "title": "Transport in Delhi", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-06-07T13:07:46Z"}, {"url": "https://hongkongairport.com/en/transport/to-from-airport/index.page", "title": "Overview, To and From Airport - Hong Kong International Airport", "favicon": "https://hongkongairport.com/iwov-resources/image/common/icon/favicon.ico"}]}, "q14": {"question": "Are there hotels or sleeping facilities at Washington airport?", "answer": "Washington Dulles International Airport has a Washington Dulles Airport Marriott on airport grounds, connected by a free shuttle that runs every 15 minutes. There are no on-site capsule hotels or sleeping pods inside the terminal, but a Sleepbox Lounge with 16 sound-proof rooms is available airside. For a more traditional hotel stay, the Marriott is the most convenient option.", "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 Delhi to Washington?", "answer": "The most common long-haul aircraft on connecting flights from Delhi to Washington are the Boeing 777-300ER and the Boeing 787-9, with the Boeing 777-300ER appearing most frequently — especially via Toronto (Air Canada), Paris (Air France), and Dubai (Emirates). The Boeing 787-9 shows up via Newark and Frankfurt on United and Lufthansa, while the Airbus A380-800 also appears on the Dubai connection. The exact aircraft can vary by day and airline; Wi‑Fi and seatback entertainment are widely available on these long-haul jets.", "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"]}, "q20": {"question": "What are the best airport lounge options when departing from Delhi?", "answer": "When departing from Delhi's Indira Gandhi International Airport (DEL), the Encalm Lounge is available in multiple terminals, including Terminal 3 for international flights, with 24-hour access, Wi-Fi, and flight monitors. The American Express Centurion Lounge is located in Terminal 1D for domestic departures, offering cardholder-exclusive access. Priority Pass members can also use the Domestic Lounge in Terminal 3, which provides complimentary shoe shine and a two-hour stay limit.", "toolsUsed": [], "references": [{"url": "https://americanexpress.com/en-in/travel/lounges/the-platinum-card/DEL", "title": "American Express Lounges at Indira Gandhi International Airport | Amex IN", "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png"}, {"url": "https://prioritypass.com/en-GB/lounges/india/indira-gandhi-international", "title": "Indira Gandhi International Airport DEL Lounges - DEL Airport Guide and lounges. | Priority Pass", "favicon": "https://prioritypass.com/icon.png?a4ff481221414a5c"}, {"url": "https://www.prioritypass.com/en-GB/airport-guides/new-delhi-indira-gandhi-international", "title": "New Delhi Indira Gandhi Intl DEL lounges - DEL Airport Guide and lounges. | Priority Pass", "time_published": "2024-11-05T00:00:00Z"}, {"url": "https://www.americanexpress.com/en-us/travel/lounges/the-centurion-card-idc-en/DEL/Domestic-Lounge-Terminal-3-Domestic-xR0EFjQGOr/", "title": "Domestic Lounge at Indira Gandhi International Airport | Amex US", "time_published": "2026-03-18T00:00:00Z"}, {"url": "https://hongkongairport.com/sites/en/passenger-guide/overseas-airports-information/delhi.page", "title": "Delhi Indira Gandhi International Airport, Passenger Guide - Hong Kong International Airport", "favicon": "https://hongkongairport.com/iwov-resources/image/common/icon/favicon.ico"}]}, "q21": {"question": "What is the baggage allowance on this route from Delhi to Washington?", "answer": "Baggage allowance depends on the airline and fare type. Basic economy tickets are restrictive and may not include a checked bag, while standard international economy fares typically include one checked bag and a carry-on. Premium cabins offer more generous allowances, often with two checked bags."}, "q22": {"question": "What cabin and seat options are typical from Delhi to Washington?", "answer": "Flights from Delhi to Washington typically offer Economy, Premium Economy on many airlines, and lie-flat Business class."}, "q23": {"question": "Are same‑day changes or standby possible on this route?", "answer": "Same‑day changes and standby depend on the airline and fare class, with flexible and premium cabin tickets offering the most options."}}}}