{
  "response": {
    "Key": "HAN-SEL",
    "orig": {
      "code": "HAN",
      "type": "airport",
      "city": "Hanoi",
      "fullCity": "Hanoi, Vietnam",
      "airport": "Noi Bai Intl Airport"
    },
    "dest": {
      "code": "SEL",
      "type": "airport",
      "city": "Seoul",
      "fullCity": "Seoul, Korea",
      "airport": "Incheon Intl Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Hanoi to Seoul?",
        "answer": "A nonstop flight from Hanoi (HAN) to Seoul (ICN) usually takes about 4 hours 10 minutes to 4 hours 30 minutes. With a layover, total travel time often ranges from 7 to 12 hours, depending on the connection city. The return flight from Seoul to Hanoi is typically slightly shorter, around 4 hours 5 minutes to 4 hours 20 minutes nonstop. Airlines like Korean Air and Vietnam Airlines offer the fastest nonstop services on this route."
      },
      "q1": {
        "question": "Are there any direct flights from Hanoi to Seoul?",
        "answer": "There are nonstop flights from Hanoi (HAN) to Seoul (ICN) operated by five airlines — VietJet Air, Vietnam Airlines, Korean Air, Asiana Airlines, and Jeju Air — all running daily. The schedule data shows a combined 120 weekly flights across these carriers, with departures spread throughout the day from early morning (around 00:45) to late evening (around 23:50). Jeju Air offers 8 weekly flights while the other four carriers each offer 28 weekly flights, giving travelers frequent options on 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.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q2": {
        "question": "Are there visa requirements to travel from Hanoi to Seoul?",
        "answer": "Yes, visa requirements depend on your nationality. For Vietnamese citizens, South Korea currently requires a visa for most purposes, though a visa waiver (K-ETA) is available for short stays if holding a valid visa from certain countries like the US, Canada, UK, etc. South Korean citizens can enter Vietnam visa-free for up to 45 days. Other nationalities should check both countries' entry rules. Always verify latest policies before travel."
      },
      "q3": {
        "question": "What are the ground transportation options in Seoul?",
        "answer": "Seoul is served by two major airports. From Incheon International Airport (ICN), the AREX Express train reaches Seoul Station in 43 minutes non-stop, while the all-stop AREX takes about 60 minutes. Both are efficient and widely used. Airport limousine buses connect to various districts in 60–90 minutes and are comfortable. Taxis and ride-share services like Kakao T are available but can be expensive and subject to traffic, taking 60–90 minutes to central Seoul. Car rentals are possible but not recommended for city travel due to congestion and limited parking. Most travelers prefer the AREX train for its speed and reliability. From Gimpo International Airport (GMP), the AREX and subway lines reach central Seoul in 20–30 minutes, with similar bus and taxi options, though trains remain most popular."
      },
      "q5": {
        "question": "How far in advance should I book tickets from Hanoi to Seoul?",
        "answer": "For the best fares on the Hanoi to Seoul route, booking about 6 to 10 weeks ahead is generally ideal for off-peak travel, though for summer (June–August) and major holidays like Lunar New Year or Chuseok you'll want to book 3 to 4 months out as prices rise quickly closer to departure.",
        "methodology": "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": [
          "flight_schedule"
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Hanoi to Seoul?",
        "answer": "Yes, overnight red-eye flights are available from Hanoi (HAN) to Seoul (SEL). Four airlines — VietJet Air, Korean Air, Asiana Airlines, and Vietnam Airlines — operate daily nonstop red-eyes, typically departing between 10:50 PM and 11:50 PM and arriving in Seoul 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 Hanoi to Seoul?",
        "answer": "From Hanoi (HAN) to Seoul (SEL), nonstop flights are operated by VietJet Air (VJ), Vietnam Airlines (VN), Korean Air (KE), Asiana Airlines (OZ), and Jeju Air (7C), all serving Incheon (ICN) with daily service. The schedule data shows these five carriers offering multiple flights per day across a mix of morning, afternoon, and overnight departures. Other airlines may also serve the route via connections, but these are the nonstop carriers shown in the schedule.",
        "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"
        ]
      },
      "q8": {
        "question": "If I need a connection, what are common layover cities between Hanoi and Seoul?",
        "answer": "Common layovers include Hong Kong, Taipei, and Shanghai, which offer efficient transfers and competitive total travel times. Hong Kong and Taipei provide broad connections and often have visa‑free transit options for eligible nationalities, while Shanghai can be a convenient hub for China Eastern connections. However, many travelers prefer direct flights on this route as they are widely available."
      },
      "q9": {
        "question": "How reliable are on‑time departures on this route from Hanoi to Seoul?",
        "answer": "On‑time reliability is generally good but can dip during monsoon season or peak afternoon hours. Early morning departures on Vietnam Airlines and Korean Air tend to have the best on‑time performance."
      },
      "q10": {
        "question": "Which months have the best weather for traveling to Seoul?",
        "answer": "April to June and September to October offer mild temperatures, blossoming or autumn foliage, and fewer tourists than summer or winter peaks."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Hanoi to Seoul?",
        "answer": "Bring a passport valid for at least six months, a K-ETA or valid visa, proof of onward or return travel, a payment method for baggage, and any required vaccination certificates if applicable."
      },
      "q12": {
        "question": "Which airport should I use in Seoul?",
        "answer": "Incheon is Seoul's main international gateway, located about 48 km west of the city centre, and serves most full-service carriers and global alliances. Gimpo is much closer to downtown, roughly 15 km, and primarily handles domestic flights along with short-haul international routes to China, Japan, and Taiwan, often on low-cost or regional airlines. For long-haul arrivals like from Hanoi, you will almost certainly land at Incheon."
      },
      "q13": {
        "question": "How do I get to Noi Bai Intl Airport from the city center?",
        "answer": "From Hanoi city center to Noi Bai, the express bus 86 takes about 45–60 minutes and is a popular budget choice. Rideshares and taxis are faster at 30–45 minutes but cost more. Shuttle buses and private cars are available, while driving and parking are less common for travelers."
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at Seoul airport?",
        "answer": "Yes. Incheon Airport offers the Incheon Airport Transit Hotel inside Terminal 1 and Terminal 2 airside, plus a capsule hotel in Terminal 1 landside. No shuttle is needed. Nearby hotels are also connected by free shuttle."
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Incheon Intl Airport?",
        "answer": "Incheon International Airport has currency exchange kiosks in both Terminal 1 and Terminal 2, multi-faith prayer rooms before and after security, and free unlimited Wi-Fi throughout the airport."
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Hanoi and Seoul airports?",
        "answer": "Noi Bai International Airport in Hanoi provides wheelchair assistance, accessible toilets, and priority lanes; request help via your airline at least 48 hours before departure. Children's play areas are limited. At Seoul Incheon, accessible services include wheelchair assistance, dedicated check-in counters, and a barrier-free travel guide; Incheon also features multiple children's play zones, nursing rooms, and a kids' lounge. Pre-arrange assistance through your airline."
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Hanoi to Seoul?",
        "answer": "On the Hanoi to Seoul route, the schedule data shows a mix of narrowbody and widebody aircraft, with the Airbus A321-100 (operated by VietJet) appearing most frequently on the sample day, alongside the Airbus A318 (H1), Airbus A350-900 and Boeing 787 (Vietnam Airlines), and Boeing 787-10 and Airbus A321-200 Neo (Korean Air). The exact aircraft can vary by day and airline, and Wi-Fi and seatback entertainment are widely available on these modern types.",
        "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 Hanoi to Seoul?",
        "answer": "On the Hanoi (HAN) to Seoul (SEL) route, the nonstop carriers include Korean Air and Vietnam Airlines (both SkyTeam members) and Asiana Airlines (Star Alliance), while VietJet Air and Jeju Air operate without any global alliance affiliation.",
        "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 Hanoi?",
        "answer": "At Hanoi Noi Bai International Airport, the Vietnam Airlines Lotus Lounge (domestic and international) is the primary airline‑branded option, accessible to business‑class passengers and SkyTeam Elite Plus members. The Song Hong Business Lounge in the international terminal offers Priority Pass access and day passes, featuring showers and a buffet. The NIA Business Lounge in Terminal 2 also accepts Priority Pass and provides comfortable seating and light refreshments."
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Hanoi to Seoul?",
        "answer": "On Hanoi–Seoul flights, allowance depends on the airline and fare type. Basic economy often excludes a checked bag; standard economy usually includes one checked bag and a carry‑on. Premium cabins offer more. Check your ticket for exact rules."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Hanoi to Seoul?",
        "answer": "Flights from Hanoi to Seoul typically offer Economy and flat-bed Business class; Premium Economy is uncommon on this route."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Same-day changes and standby depend on the airline and fare type, with flexible and premium cabin tickets offering the best options."
      },
      "q24": {
        "question": "What are the cheapest days and times to fly from Hanoi to Seoul?",
        "answer": "The cheapest day to fly from Hanoi to Seoul is Wednesday, with an average fare of $456, while Tuesday is the most expensive day at $530. The cheapest time of day to depart is late night, with fares starting at $310.",
        "methodology": "The cheapest day of the week and time of day to depart are drawn from the same large sample of real fares Priceline users found on this route in the last 72 hours, grouped by the day of the week and by the time-of-day window of the outbound departure, with the lowest and average price reported for each.",
        "relevant": true,
        "toolsUsed": [
          "departure_timing"
        ]
      },
      "q25": {
        "question": "What is a good price for a flight from Hanoi to Seoul?",
        "answer": "A good price for a flight from Hanoi to Seoul is anything under $365, which is considered a great deal, while the typical fare is around $504.",
        "methodology": "The typical price, the lowest fare, a 'great deal' threshold, and how fares are spread across price bands are summarized from a large sample of the real fares Priceline users found on this route in the last 72 hours, with a small fraction of extreme outlier fares excluded from the range.",
        "relevant": true,
        "toolsUsed": [
          "price_context"
        ]
      }
    }
  }
}