{
  "response": {
    "Key": "ICN-WAS",
    "orig": {
      "code": "ICN",
      "type": "airport",
      "city": "Seoul",
      "fullCity": "Seoul, Korea",
      "airport": "Incheon Intl Airport"
    },
    "dest": {
      "code": "WAS",
      "type": "airport",
      "city": "Washington D.C.",
      "fullCity": "Washington D.C., United States",
      "airport": "Ronald Reagan National Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Seoul to Washington D.C.?",
        "answer": "A nonstop flight from Seoul (ICN) to Washington D.C. (IAD) typically takes about 13 hours 30 minutes to 14 hours. The return flight (Washington D.C. to Seoul) often takes slightly longer, around 14 hours 30 minutes to 15 hours, due to prevailing winds. With one stop, common layover cities include Tokyo, San Francisco, or Dallas, resulting in total travel times of 16 to 20 hours or more depending on the connection duration. Korean Air and Asiana Airlines operate faster nonstop services."
      },
      "q1": {
        "question": "Are there any direct flights from Seoul to Washington D.C.?",
        "answer": "Yes, there are non‑stop flights from Seoul (ICN) to Washington D.C. (WAS), with Korean Air flying twice daily to Dulles and Air Premia operating four times a week on Monday, Wednesday, Friday, and Sunday. Korean Air runs 14 weekly flights departing around 10:15–10:25 AM, while Air Premia's single daily departure on its operating days leaves at 10:00 AM.",
        "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. Carrier service and weekly frequencies are summarized 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). Where available, on-time and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, and typical fares 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 Seoul to Washington D.C.?",
        "answer": "Yes, visa or travel authorization requirements apply for travel from Seoul to Washington D.C. U.S. citizens do not need a visa to enter the U.S. but must present a valid U.S. passport. South Korean nationals are eligible for the Visa Waiver Program and must obtain an approved ESTA before travel for tourism or business visits of 90 days or less. Nationals of other countries should check if they are eligible for ESTA or need to apply for a visa at a U.S. embassy or consulate before departure. Travelers should ensure their passport is valid for the duration of their stay."
      },
      "q3": {
        "question": "What are the ground transportation options in Washington D.C.?",
        "answer": "Washington D.C. is served by three main airports: Ronald Reagan Washington National (DCA), Washington Dulles International (IAD), and Baltimore/Washington International (BWI). DCA is closest to the city center, with a direct Metro station on the Yellow and Blue lines reaching downtown in about fifteen minutes. IAD is connected via the Silver Line Metro, taking roughly fifty to sixty minutes to central D.C. BWI offers MARC and Amtrak train services to Union Station in about thirty to forty minutes, plus a shuttle to the BWI Rail Station. Taxis and ride-share services are available at all airports but are more expensive and subject to traffic. Car rentals are widely available but parking can be challenging and costly in the city. The Metro is the most used option for DCA and IAD due to its convenience and affordability, while travelers from BWI often rely on rail services."
      },
      "q4": {
        "question": "When is the cheapest time to fly from Seoul to Washington D.C.?",
        "answer": "The cheapest months to fly from Seoul to Washington D.C. are September (average $1229), October ($1334), and August ($1354), while the most expensive are December ($1847), June ($1702), and July ($1612).",
        "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.",
        "relevant": true,
        "toolsUsed": [
          "seasonal_prices"
        ]
      },
      "q5": {
        "question": "How far in advance should I book tickets from Seoul to Washington D.C.?",
        "answer": "For flights from Seoul to Washington D.C., the best time to book is around 23 to 26 weeks (roughly 5.5 to 6 months) before departure, with average fares around $1,578. Booking very early (around 180 days out) can yield slightly lower fares around $1,556, while last-minute bookings climb to about $1,781; summer and holiday periods likely push optimal windows earlier and raise prices.",
        "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.",
        "relevant": true,
        "toolsUsed": [
          "booking_timing"
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Seoul to Washington D.C.?",
        "answer": "There are no nonstop red-eye flights from Seoul (ICN) to Washington D.C. (WAS). However, one-stop itineraries with an overnight long leg are available, such as a Turkish Airlines flight departing ICN at 11:20 PM and arriving in Istanbul at 5:00 AM before connecting onward, or an Asiana Airlines flight departing ICN at 9:05 PM and arriving at JFK at 11:00 PM with a connection to Washington.",
        "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"
        ]
      },
      "q8": {
        "question": "If I need a connection, what are common layover cities between Seoul and Washington D.C.?",
        "answer": "Common layover cities between Seoul (ICN) and Washington D.C. (WAS) include Tokyo (NRT/HND), San Francisco (SFO), Los Angeles (LAX), and Dallas/Fort Worth (DFW). Tokyo offers efficient transfers and a relatively short first leg, keeping total travel time competitive. U.S. West Coast hubs like San Francisco and Los Angeles provide broad domestic connections and allow you to clear U.S. customs at the layover point, which can simplify arrival in Washington. Dallas/Fort Worth is a major hub with extensive onward flights and often competitive total travel times. Note that U.S. transit requires a visa or ESTA for many nationalities, while Tokyo permits visa-free transit for most travelers."
      },
      "q9": {
        "question": "How reliable are on‑time departures on this route from Seoul to Washington D.C.?",
        "answer": "On‑time performance is generally reliable, but afternoon and evening departures can be affected by cumulative delays or weather. Choosing a morning flight, particularly on Korean Air or Asiana, often improves your chances of an on‑time departure."
      },
      "q10": {
        "question": "Which months have the best weather for traveling to Washington D.C.?",
        "answer": "April to May and September to October offer mild temperatures and fewer tourists than summer."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Seoul to Washington D.C.?",
        "answer": "Bring a passport valid for the U.S. at the time of entry, a valid U.S. visa or ESTA authorization, proof of onward or return travel, payment for baggage and any required vaccination certificates."
      },
      "q12": {
        "question": "Which airport should I use in Washington D.C.?",
        "answer": "Reagan National is closest to downtown and ideal for domestic connections. Dulles is farther west and serves as the primary international gateway, with more long-haul flights, including those from Seoul. Baltimore/Washington is farther north and mainly used for low-cost carriers and domestic routes."
      },
      "q13": {
        "question": "How do I get to Incheon Intl Airport from the city center?",
        "answer": "From central Seoul, take the AREX Express train (43 min) or All‑Stop train (cheaper, about 60 min). Airport limousine buses serve many hotels and are popular for luggage convenience. Taxis and rideshares are fastest outside peak hours but cost significantly more. Driving and parking are available but expensive."
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at Washington D.C. airport?",
        "answer": "Dulles International has no on-site hotel, but nearby hotels like the Washington Dulles Airport Marriott offer free shuttles. Reagan National has no on-site hotel, but nearby hotels provide shuttle service. Washington D.C. airports lack capsule hotels or sleeping pods."
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Ronald Reagan National Airport?",
        "answer": "Ronald Reagan National Airport has currency exchange at Travelex kiosks pre‑security in Terminals A and B/C. A non‑denominational chapel is located post‑security near Gate 1 in Terminal A; Terminal B/C has a quiet room near Gate 23. Free Wi‑Fi is available throughout the airport."
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Seoul and Washington D.C. airports?",
        "answer": "Seoul Incheon offers wheelchair assistance, accessible restrooms, and a kids' zone in Terminal 1 and near Gate 11 in Terminal 2. Washington Dulles provides wheelchair services, an Aira network for visually impaired travelers, and a children's play area in Concourse B. Request assistance through your airline at least 48 hours before departure."
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Seoul to Washington D.C.?",
        "answer": "There is no nonstop service from Seoul (ICN) to Washington, D.C. (WAS); typical connecting flights use Boeing 787-9s, Airbus A350-900s, and Boeing 777 variants (especially 777-300ER) on the long transpacific leg, with common connection points including DFW, SFO, JFK, and YYZ. The exact aircraft can vary by day and airline, and Wi-Fi and seatback entertainment are widely available on these long-haul segments.",
        "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 Seoul to Washington D.C.?",
        "answer": "Korean Air (SkyTeam) and Air Premia (no alliance) are the carriers shown with nonstop service between Seoul Incheon and Washington Dulles in the schedule data. Air Premia is an independent airline unaffiliated with any global alliance. Star Alliance and oneworld do not have a nonstop presence on this route, though they may serve it via connections.",
        "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.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q20": {
        "question": "What are the best airport lounge options when departing from Seoul?",
        "answer": "At Incheon Airport, Korean Air operates the Prestige Class Lounge and the First Class Lounge in Terminal 2, available to business‑class and first‑class passengers plus elite members, featuring showers, dining and nap areas. Asiana Airlines has its Business Lounge and First Lounge in Terminal 1 for premium travellers and Star Alliance Gold members. The independent Matina Lounge in Terminal 1 accepts Priority Pass and sells day passes, offering buffet food and a quiet rest zone."
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Seoul to Washington D.C.?",
        "answer": "On flights from Seoul to Washington D.C., baggage rules differ by airline. Basic economy often excludes a checked bag, while standard economy typically includes one checked bag and a carry‑on. Premium cabins and elite status may increase allowances."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Seoul to Washington D.C.?",
        "answer": "Flights from Seoul to Washington D.C. typically offer Economy, flat-bed Business class, and often Premium Economy, with First class available on select flights."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies vary by airline and fare; flexible and higher cabins offer better options for same‑day changes or standby, while basic economy tickets typically do not."
      }
    }
  }
}