{
  "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": "From Hanoi there are no non-stop flights to the United States. One-stop options typically route through major Asian hubs like Tokyo, Seoul, or Hong Kong, arriving in cities such as Los Angeles, San Francisco, or Seattle on the West Coast, or New York and Chicago farther east. Travelers choose based on their final U.S. destination and onward connections."
      },
      "q1": {
        "question": "How long is the flight from Hanoi to United States?",
        "answer": "From Hanoi to the United States, flights typically connect through East Asian hubs, with total travel times to Los Angeles or San Francisco usually ranging from 16 to 20 hours. Westbound return flights are often 1 to 2 hours shorter due to prevailing winds."
      },
      "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 travelers connect via major Asian hubs like Tokyo, Seoul, Hong Kong, or Taipei, with total travel times typically ranging from 16 to 22 hours depending on the layover and the U.S. gateway, such as Los Angeles, San Francisco, or New York."
      },
      "q3": {
        "question": "Which airlines fly from Hanoi to United States?",
        "answer": "From Hanoi to the US you can fly with Vietnam Airlines, Cathay Pacific, Korean Air, Japan Airlines, China Airlines, and ANA, often via their hubs."
      },
      "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, and August, while June and December are the most expensive — peak summer and major holidays drive prices up. Booking about 23 to 26 weeks ahead (roughly 5–6 months) tends to yield the best fares. Midweek departures and off-peak travel times generally help keep costs lower, 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. 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 23–26 weeks (about 5–6 months) ahead, when average fares drop to around $1,048, though for peak summer and holiday travel you'll want to book even earlier while shoulder seasons can sometimes be booked closer to 16–19 weeks out.",
        "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": "Popular U.S. cities for visitors flying from Hanoi include New York for landmarks and culture, Los Angeles for entertainment and beaches, San Francisco for scenery and tech, Las Vegas for entertainment, and Washington D.C. for history. These cities are major international gateways with direct or one-stop flights from Asia. Once in the U.S., domestic flights connect them efficiently, though train travel is limited compared to Europe."
      },
      "q8": {
        "question": "Which airports in United States are best to fly into from Hanoi?",
        "answer": "From Hanoi to the United States, the best airports to fly into are typically major hubs on the West Coast that serve as gateways from Asia. Los Angeles International Airport (LAX) and San Francisco International Airport (SFO) offer the most direct and one-stop long-haul options from Hanoi, with LAX providing extensive connections across the U.S. and SFO being a convenient entry point for Northern California and the Pacific Northwest. For onward train travel, neither LAX nor SFO has direct rail links, but you can easily reach Amtrak stations in Los Angeles and the Bay Area. If your destination is a resort area like Hawaii, you will likely connect through LAX or SFO to Honolulu (HNL). For regional travel in the Northeast, consider flying into New York's John F. Kennedy International Airport (JFK), though you will need a connection, as there are no nonstop flights from Hanoi to the East Coast. JFK offers good onward train connections via the AirTrain to Amtrak’s Northeast Corridor."
      },
      "q12": {
        "question": "When is the best time of year to visit United States?",
        "answer": "The best time to visit the United States from Hanoi is during spring (April to June) or autumn (September to early November). These seasons offer milder weather and lighter crowds compared to the busy and expensive summer months. Flight times to major gateway cities like Los Angeles or San Francisco typically range from 16 to 20 hours, often with one or more stops. Prices are generally higher in summer and around major holidays, while midweek and off-peak travel can be more affordable."
      },
      "q13": {
        "question": "How do I get to Noi Bai Intl Airport from the city center?",
        "answer": "From downtown Hanoi, Noi Bai International Airport is accessible by public bus routes 7, 17, 90, and 109, which are cheap but take about an hour. Metered taxis and ride-share services are available on the arrivals level at both terminals and reach the city center in roughly 30 minutes, making them the fastest and most popular option. Shared minibuses offer door-to-door service to hotels at a modest cost, while driving and parking at the airport is possible for those with a private car. Overall, taxis and ride-shares are the quickest and most convenient for most travelers, though public buses are by far the cheapest.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://hanoiairportonline.com/hanoi-airport-transportation",
            "title": "Hanoi Airport Transportation – Hanoi Airport Guide",
            "favicon": "https://www.hanoiairportonline.com/wp-content/themes/eleven40-pro-airport/images/favicon.ico"
          },
          {
            "url": "http://www.hanoiairportonline.com/public-taxi",
            "title": "Hanoi Airport Public Taxi – Hanoi Airport Guide",
            "time_published": "2026-01-01T00:00:00Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Buses_in_Hanoi",
            "title": "Buses in Hanoi",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-08-21T07:47:04Z"
          },
          {
            "url": "https://hanoiairportonline.com/public-bus",
            "title": "Hanoi Airport Public Bus – Hanoi Airport Guide",
            "favicon": "https://www.hanoiairportonline.com/wp-content/themes/eleven40-pro-airport/images/favicon.ico"
          },
          {
            "url": "https://hanoiairportonline.com/hanoi-airport-minibus",
            "title": "Hanoi Airport Minibus – Hanoi Airport Guide",
            "favicon": "https://www.hanoiairportonline.com/wp-content/themes/eleven40-pro-airport/images/favicon.ico"
          }
        ]
      }
    }
  }
}