{
  "response": {
    "Key": "US-VN",
    "orig": {
      "code": "US",
      "type": "country",
      "country": "United States"
    },
    "dest": {
      "code": "VN",
      "type": "country",
      "country": "Vietnam"
    },
    "faq": {
      "q0": {
        "question": "Which cities in United States can I fly from to reach Vietnam?",
        "answer": "Major US departure airports for Vietnam include Los Angeles, San Francisco, Seattle, Dallas, New York JFK, and Chicago O'Hare. Non-stop flights are limited, with Vietnam Airlines operating from San Francisco to Ho Chi Minh City. Most itineraries involve one stop, commonly via hubs like Tokyo, Seoul, Taipei, Hong Kong, or Doha. Travellers choose based on proximity to their home airport, total travel time, and fare competitiveness, with West Coast cities offering shorter connections."
      },
      "q1": {
        "question": "Which airports in Vietnam are the best to fly into from United States?",
        "answer": "The main gateways from the U.S. are Hanoi Noi Bai and Ho Chi Minh City Tan Son Nhat, both with direct and one-stop options. Hanoi serves the north and Ha Long Bay, while Ho Chi Minh City is the hub for the Mekong Delta and southern beaches. Da Nang is a growing entry point for central Vietnam."
      },
      "q2": {
        "question": "How long is the flight from United States to Vietnam?",
        "answer": "From Los Angeles or San Francisco to Ho Chi Minh City or Hanoi, non-stop flights take roughly 14 to 16 hours westbound, with returns often an hour or two shorter. One-stop itineraries through hubs like Tokyo, Seoul, or Taipei typically take 17 to 22 hours."
      },
      "q3": {
        "question": "Are there direct flights from United States to Vietnam?",
        "answer": "Non-stop flights from the U.S. to Vietnam are limited. Currently, Vietnam Airlines flies non-stop from San Francisco to Ho Chi Minh City. Other options require a connection through hubs like Tokyo, Seoul, Hong Kong, or Doha, with total travel times typically 18-24 hours."
      },
      "q4": {
        "question": "Which airports in United States are usually cheapest for flying to Vietnam?",
        "answer": "Los Angeles and San Francisco are typically the cheapest US departure points for Vietnam due to direct flights and strong competition on transpacific routes. From other US cities you will usually need a domestic connection first, which can increase the total fare."
      },
      "q5": {
        "question": "Which airlines fly from United States to Vietnam?",
        "answer": "Vietnam Airlines, United, Delta, Korean Air, Japan Airlines, and China Southern offer one-stop flights; non-stop from SFO with Vietnam Airlines."
      },
      "q6": {
        "question": "When is the cheapest time to fly from United States to Vietnam?",
        "answer": "The cheapest months to fly from the US to Vietnam are typically September, April, October, and August, while June, December, and May are the priciest — so aim for early fall or mid-spring to avoid both summer peak and Lunar New Year / holiday surges. For the best fare, book about 6 to 9 weeks before departure; midweek departures (Tuesday/Wednesday) and off-peak times of day tend to be cheaper than weekend or evening flights, though exact day-of-week patterns aren't available for this route.",
        "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. 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."
      },
      "q7": {
        "question": "How far in advance should I book flights from United States to Vietnam?",
        "answer": "For flights from the United States to Vietnam, the optimal booking window is about 6 to 9 weeks before departure, with the lowest fares typically appearing around 60 days out; during peak seasons like Tet or summer holidays, booking 10 to 12 weeks ahead is safer.",
        "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."
      },
      "q8": {
        "question": "Do I need a visa to travel from United States to Vietnam?",
        "answer": "Travellers from the United States to Vietnam generally need a visa, which can often be obtained as an e-visa for tourism or business stays up to 90 days. Requirements depend on nationality and purpose of travel, so always check with Vietnamese authorities for the latest rules."
      },
      "q10": {
        "question": "How easy is it to travel within Vietnam after I arrive?",
        "answer": "Vietnam has a dense network of domestic flights, with hubs in Hanoi and Ho Chi Minh City. Trains and buses also connect cities along the coast. Arriving in Hanoi or HCMC gives the most onward flight options."
      }
    }
  }
}