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Flights from Seattle to Haikou

Book direct flights from Seattle to Haikou: One way flights from $1,040, round trip flights from $1,459. Find flight deals for the next 3 months below.

      • Cheapest nonstop
        SEA 11:40 AM
        18h 20m
        Nonstop
        HAK 9:00 PM
        Seattle - Haikou | Sat, Jul 11 | Hainan Airlines
        HAK 7:10 AM
        17h 30m
        Nonstop
        SEA 9:40 AM
        Haikou - Seattle | Sat, Jul 18 | Hainan Airlines
        $1,459 $2,446
        40% off
        40% off
        $2,446 $1,459
      • SEA 2:05 PM
        19h 45m
        1 stop
        HAK 12:50 AM
        Seattle - Haikou | Sat, Jul 11 | Alaska Airlines
        HAK 11:40 AM
        36h 5m
        1 stop
        SEA 8:45 AM
        Haikou - Seattle | Sat, Jul 18 | Singapore Airlines
        $1,707 $2,446
        30% off
        30% off
        $2,446 $1,707
      • SEA 1:05 PM
        20h 45m
        1 stop
        HAK 12:50 AM
        Seattle - Haikou | Sat, Jul 11 | Korean Air
        HAK 11:40 AM
        36h 5m
        1 stop
        SEA 8:45 AM
        Haikou - Seattle | Sat, Jul 18 | Singapore Airlines
        $1,925 $2,446
        21% off
        21% off
        $2,446 $1,925
      • SEA 10:15 AM
        33h 25m
        1 stop
        HAK 10:40 AM
        Seattle - Haikou | Sat, Jul 11 | Singapore Airlines
        HAK 11:40 AM
        36h 5m
        1 stop
        SEA 8:45 AM
        Haikou - Seattle | Sat, Jul 18 | Singapore Airlines
        $2,005
        18% off
        $2,446 $2,005
      • SEA 1:00 PM
        17h 25m
        1 stop
        HAK 2:00 PM
        Seattle - Haikou | Fri, May 22 | Normal Airline
        HAK 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Haikou - Seattle | Sun, May 24 | Normal Airline
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      • Cheapest nonstop
        SEA 11:05 AM
        18h 55m
        Nonstop
        HAK 9:00 PM
        Seattle - Haikou | Mon, May 25 | Hainan Airlines
        $1,040 $1,738
        40% off
        40% off
        $1,738 $1,040
      • SEA 11:05 AM
        18h 55m
        Nonstop
        HAK 9:00 PM
        Seattle - Haikou | Mon, Jun 22 | Hainan Airlines
        $1,394 $1,738
        20% off
        20% off
        $1,738 $1,394
      • SEA 11:45 AM
        38h 55m
        1 stop
        HAK 5:40 PM
        Seattle - Haikou | Fri, May 22 | American Airlines
        $970 $1,738
        44% off
        44% off
        $1,738 $970
      • SEA 2:05 PM
        19h 45m
        1 stop
        HAK 12:50 AM
        Seattle - Haikou | Mon, Jun 22 | Alaska Airlines
        $1,040
        40% off
        $1,738 $1,040
      • SEA 11:45 AM
        36h 55m
        1 stop
        HAK 3:40 PM
        Seattle - Haikou | Mon, May 25 | Cathay Pacific
        $1,243
        28% off
        $1,738 $1,243
      • SEA 11:45 AM
        36h 55m
        1 stop
        HAK 3:40 PM
        Seattle - Haikou | Sun, May 24 | Cathay Pacific
        $1,243
        28% off
        $1,738 $1,243
      • SEA 1:05 PM
        20h 30m
        1 stop
        HAK 12:35 AM
        Seattle - Haikou | Tue, Jun 23 | Korean Air
        $1,345
        23% off
        $1,738 $1,345
      • SEA 10:15 AM
        33h 25m
        1 stop
        HAK 10:40 AM
        Seattle - Haikou | Tue, Jun 23 | Singapore Airlines
        $1,425
        18% off
        $1,738 $1,425
      • SEA 1:00 PM
        17h 25m
        1 stop
        HAK 2:00 PM
        Seattle - Haikou | Fri, May 22 | Normal Airline
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Displayed flight fares from Seattle to Haikou are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Frequently Asked Questions

  • What are the cheapest flights from Seattle to Haikou (SEA-HAK)?

    Based on Trip.com data, American Airlines offers one-way fares as low as $970 on Cheapest nonstop routes (e.g. SEA to HAK on Fri, May 22), while Hainan Airlines offers Cheapest nonstop round-trips from $1,459 departing on Sat, Jul 11 and returning on Sat, Jul 18.
  • At the moment, several airlines serve connecting flights from Seattle to Haikou, including: Hainan Airlines Alaska Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • It takes around 18 hours 55 minutes to fly from Seattle (SEA) to Haikou (HAK).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Haikou is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 1 flight per week flying from Seattle to Haikou. You can check the weekly schedule for popular airlines on this route below: Hainan Airlines: -/-/-/W/-/-/- -- HU446 (11:31)
  • To find best deals on flights from Seattle to Haikou, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, May 22, with one-way flights priced at just $970.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Hainan Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Haikou travel is around December.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seattle to Haikou is September, when demand for travel is lower.
  • After crunching the numbers on our May flight calendar, it's currently cheapest to fly from Seattle to Haikou on May 21, 2026 with Alaska Airlines, with prices starting at $794.
  • You can land at any one of the following hubs in Haikou, with Seattle-Tacoma International Airport to Haikou Meilan International Airport (SEA-HAK) is by far the most common option on this route: Haikou Meilan International Airport (HAK).
  • The time difference between Haikou and Seattle is 16h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

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Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.