{
  "response": {
    "Key": "HAN-US",
    "orig": {
      "code": "HAN",
      "type": "airport",
      "city": "Hanoi",
      "fullCity": "Hanoi, Vietnam",
      "airport": "Noi Bai Intl Airport"
    },
    "dest": {
      "code": "US",
      "type": "country",
      "country": "United States"
    },
    "faq": {
      "q0": {
        "question": "Which cities in United States can I fly to from Hanoi?",
        "answer": "There are no non-stop flights from Hanoi to the United States. You will typically connect once via major Asian hubs like Tokyo, Seoul, Hong Kong, or Taipei, landing in West Coast cities such as Los Angeles, San Francisco, or Seattle. From there you can connect onward to other U.S. cities. Choose based on your final destination and the shortest total travel time."
      },
      "q1": {
        "question": "How long is the flight from Hanoi to United States?",
        "answer": "There are no non-stop flights from Hanoi to the United States. A typical one-stop itinerary to the West Coast takes about 17 to 20 hours total travel time, while reaching the East Coast often takes 20 to 25 hours. Eastbound flights are generally shorter than westbound returns due to tailwinds."
      },
      "q2": {
        "question": "Are there direct flights from Hanoi to United States?",
        "answer": "There are no non-stop flights from Hanoi to the United States. Most one-stop options connect through major Asian hubs such as Seoul, Tokyo, Hong Kong, or Taipei, with total travel times typically ranging from 17 to 22 hours depending on layover duration."
      },
      "q3": {
        "question": "Which airlines fly from Hanoi to United States?",
        "answer": "From Hanoi to the U.S. you typically connect via Asian hubs on Vietnam Airlines, Cathay Pacific, Korean Air, Japan Airlines, ANA, and others."
      },
      "q4": {
        "question": "When is the cheapest time to fly from Hanoi to United States?",
        "answer": "The cheapest months to fly from Hanoi to the United States are September, October, August, and November, while June, December, and May are the most expensive — peak summer and the winter holidays drive those higher fares. For the best price, book about 23 to 26 weeks (roughly five to six months) ahead; last-minute tickets climb steeply. Midweek departures tend to be more affordable than weekend flights across long-haul routes like this, and red-eye or late-night departures often price lower than daytime options.",
        "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. 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."
      },
      "q5": {
        "question": "How far in advance should I book flights from Hanoi to United States?",
        "answer": "For flights from Hanoi to the United States, the optimal booking window is roughly 23 to 26 weeks ahead, when average fares drop to around $1,046.",
        "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."
      },
      "q6": {
        "question": "What are the most popular cities to visit in United States?",
        "answer": "For the United States, popular cities include New York for culture and landmarks, Los Angeles for entertainment and beaches, San Francisco for scenery, Las Vegas for entertainment and Chicago for architecture and food. These are major gateways with good domestic connections."
      },
      "q7": {
        "question": "Do I need a visa to travel from Hanoi to United States?",
        "answer": "U.S. citizens do not need a visa to enter the United States, but you must present a valid U.S. passport. No electronic travel authorization is required for U.S. citizens returning home. Always check for entry rule updates before travel."
      },
      "q8": {
        "question": "Which airports in United States are best to fly into from Hanoi?",
        "answer": "From Hanoi to the United States, the best gateways are typically Los Angeles, San Francisco, and Seattle on the West Coast, as they offer the most direct or one-stop long-haul options. Los Angeles and San Francisco have extensive domestic connections and are good starting points for onward travel. For East Coast destinations, you can connect through those West Coast hubs or via major Asian transit points to New York or Washington Dulles. There are no direct flights from Hanoi to the U.S., so you will need at least one connection."
      },
      "q12": {
        "question": "When is the best time of year to visit United States?",
        "answer": "The United States is vast, so timing varies by region. Generally, spring (April to June) and autumn (September to October) offer mild weather and fewer crowds across much of the country. Summer (June to August) is peak season with high prices and crowds, especially in national parks and coastal areas."
      }
    }
  }
}