฿13,164 Find Cheap Flights from Seattle to Bangkok – Compare and Save

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Everything you should know

Cheapest return flight
฿25,833
Typical prices: ฿23,551-฿34,208
Asiana Airlines
Wed 14/2Thu 22/2
SEA - BKK • 1 stop
Cheapest one-way flight
฿13,164
Typical prices: ฿12,640-฿19,772
ไห่หนานแอร์ไลน์
Sat 3/11
SEA - BKK • 1 stop
Direct flights
There are currently no direct flights between Seattle and Bangkok. You'll need to take a connecting flight to reach the destination.
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Top routes
Cheapest • 4% average savings
Most popular
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When to book
in advance
Our data shows that travellers who book at least 8 weeks in advance save around 14% compared to booking last minute.
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When to travel
Cheapest • 10% price drop
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Cheapest • Avg ฿21,664 (return)
Shortest trip • 18h 18m (one-way)
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We hope you enjoy your trip to Bangkok!
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Booking Insights
Flight Deals

Cheap Flights from Seattle to Bangkok (SEA-BKK)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Seattle to Bangkok

Sun 14 Feb - Mon 22 Feb
Asiana Airlines Logo
00:10 - 11:05SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
19h 55m1 stop Incheon Intl
Asiana Airlines Logo
12:25 - 13:55BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
16h 30m1 stop Incheon Intl
฿25,833Asiana Airlines
Tue 3 Nov - Tue 24 Nov
Singapore Airlines Logo
08:40 - 20:00SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
20h 20m1 stop Singapore Changi
Singapore Airlines Logo
12:00 - 07:05BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
34h 05m1 stop Singapore Changi
฿25,866Singapore Airlines
Tue 3 Nov - Tue 24 Nov
Singapore Airlines Logo
08:40 - 20:00SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
20h 20m1 stop Singapore Changi
Singapore Airlines Logo
21:15 - 07:05BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
24h 50m1 stop Singapore Changi
฿25,899Singapore Airlines
Mon 21 Sep - Fri 25 Sep
Asiana Airlines Logo
00:10 - 10:40SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
20h 30m1 stop Incheon Intl
Asiana Airlines Logo
11:45 - 15:15BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
17h 30m1 stop Incheon Intl
฿25,932Asiana Airlines
Tue 27 Oct - Fri 30 Oct
ไห่หนานแอร์ไลน์ Logo
11:20 - 23:25SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
22h 05m1 stop Beijing Capital
ไห่หนานแอร์ไลน์ Logo
16:20 - 09:20BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
31h 00m1 stop Beijing Capital
฿25,965ไห่หนานแอร์ไลน์
Sun 1 Nov - Mon 23 Nov
Asiana Airlines Logo
00:10 - 22:00SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
30h 50m1 stop Incheon Intl
Asiana Airlines Logo
12:25 - 13:55BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
16h 30m1 stop Incheon Intl
฿25,998Asiana Airlines
Sun 24 Jan - Wed 3 Feb
Asiana Airlines Logo
00:10 - 22:00SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
30h 50m1 stop Incheon Intl
Asiana Airlines Logo
12:25 - 13:55BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
16h 30m1 stop Incheon Intl
฿26,064Asiana Airlines
Tue 9 Feb - Wed 24 Feb
Asiana Airlines Logo
00:10 - 11:05SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
19h 55m1 stop Incheon Intl
Asiana Airlines Logo
12:25 - 13:55BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
16h 30m1 stop Incheon Intl
฿26,097Asiana Airlines
Mon 28 Dec - Sat 16 Jan
Asiana Airlines Logo
00:10 - 22:00SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
30h 50m1 stop Incheon Intl
Asiana Airlines Logo
23:55 - 13:55BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
29h 00m1 stop Incheon Intl
฿26,130Asiana Airlines
Mon 8 Feb - Wed 24 Feb
Asiana Airlines Logo
00:10 - 11:15SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
20h 05m1 stop Incheon Intl
Asiana Airlines Logo
23:55 - 13:55BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
29h 00m1 stop Incheon Intl
฿26,163Asiana Airlines
Booking Insights

Price, demand, and travel trends for Seattle to Bangkok flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Seattle to Bangkok with more confidence.

How much is a return flight from Seattle to Bangkok?

Return flights from Seattle to Bangkok start at ฿25,833. Prices are typical for this route right now, with typical return fares ranging from ฿23,551 to ฿34,208. The lowest price found in the past 5 days was ฿25,833 on Asiana Airlines.

What's the cheapest day of the week to fly from Seattle to Bangkok?

Sunday is the cheapest day of the week to fly from Seattle to Bangkok and is 6% cheaper than the average day. Friday is the most expensive day with flight prices 3% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Seattle to Bangkok?

  • March is the cheapest month to fly from Seattle to Bangkok at ฿25,174 return.
  • June (฿42,726) and December (฿40,581) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 69% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Seattle to Bangkok the cheapest?

Flights from Seattle to Bangkok are cheapest 8 weeks before departure. Booking in this window typically costs about 14% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for Seattle to Bangkok flights

Low season

May

Cheapest flight

฿13,164
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly (46% more expensive on average)
Flights from Seattle to Bangkok Suvarnabhumi Airport

When to book flights from Seattle to Bangkok

Are your dates flexible? Find out the best times to travel from Seattle to Bangkok based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Seattle to Bangkok flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • How can I fly from Seattle to Bangkok?

    There are multiple major airlines operating between Seattle and Bangkok. Some of the airlines that frequently travel this route are Singapore Airlines, Korean Airlines and Asian Airlines. Note that there are no direct flights on this route. If you are looking to save on some dollars, you can book the flights with one layover, usually with stops at ICN and NRT.

  • What is the best hotel to stay in in Bangkok?

    There are various hotels located near and at BKK in Bangkok, if you are arriving late in the city. Consider staying at the Millenium Hilton Bangkok, Novotel Bangkok Platinum Pratunam and Radisson Suites Bangkok Sukhumvit. These hotels are within the airport’s proximity and hence are conveniently accessible. As a result, you can avoid the nighttime hassles.

  • Are there medical facilities at BKK?

    Yes, you will find exceptional medical facilities located at BKK, providing emergency services to passengers who get sick while at the airport. Vejthani Hospital Services is an outstanding walk-in clinic located at the airport. Ensure that you visit the hospital if you need urgent medical care.

  • Can I smoke at SEA?

    Smoking is not permitted within the terminal since SEA is a non-smoking facility. Only in defined areas is smoking allowed on the lower airport road sidewalk outside of the baggage claim area. So, if you feel like smoking at SEA, you can take advantage of these facilities.

  • Which airports can I use when flying from Seattle to Bangkok?

    Flights from Seattle to Bangkok usually depart from Seattle/Tacoma Intl (SEA) and may arrive at several airports in Bangkok area, including Bangkok Suvarnabhumi (BKK) and Bangkok Don Mueang Intl (DMK).

  • Which cabin classes can I book on flights from Seattle to Bangkok?

    Three cabin classes are available on flights from Seattle to Bangkok:

    • Economy class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from Seattle to Bangkok pass through?

    One-stop flights from Seattle to Bangkok most commonly connect through:

    • Taipei City Taiwan Taoyuan Intl (TPE) – 38% of one-stop connections
    • Incheon Intl (ICN) – 31% of one-stop connections
    • Singapore Changi (SIN) – 13% of one-stop connections
    • Tokyo Haneda (HND) – 10% of one-stop connections

    Taipei City Taiwan Taoyuan Intl (TPE) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Seattle to Bangkok?

    On the Seattle to Bangkok route, being flexible with your departure day can save you up to 10%. Sunday is the cheapest day at ฿26,163 return on average, while Friday is the most expensive at ฿28,869 – a ฿2,705 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What popular places can I visit in Bangkok?

    Some of the most popular sights in Bangkok are Victory Monument, Thammasat University, and Centralworld. These are among the most viewed places in Bangkok on KAYAK.

  • How expensive are last-minute Seattle to Bangkok flights?

    Last-minute fares on this route (booked within 2 weeks of departure) run 9% above the route average of ฿27,819. Book 8 weeks before departure for the lowest fares.

  • How long is a flight from Seattle to Bangkok?

    A direct flight from Seattle to Bangkok takes 0h 00m, covering 19,285 km.

  • Do I need a passport to fly from Seattle to Bangkok?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Seattle to Bangkok looking right now?

    One-way fares from Seattle to Bangkok are currently lower than usual. Average one-way flight prices are about ฿13,362, which is 12% below the typical average for this route.

  • How much time can I save by choosing a different stopover airport from Seattle to Bangkok?

    Flying via Vancouver Intl (YVR) gives the shortest average 1-stop total travel time of 18h 18m, compared to 18h 20m via Taipei City Taiwan Taoyuan Intl (TPE) and 18h 24m via Tokyo Narita (NRT).

  • What is the time difference between Seattle and Bangkok?

    Bangkok is 14 hours ahead of Seattle (Indochina Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available in Bangkok?

    Since Bangkok is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near Bangkok Suvarnabhumi Airport (BKK) – daily rates from around ฿443:

    • Drive Car Rental
    • Alamo
    • Sixt
    • Yesaway
    • Hertz

    Near Bangkok Don Mueang Intl Airport (DMK) – daily rates from around ฿224:

    • Drive Car Rental
    • Alamo
    • THAIRENTACAR
    • Enterprise Rent-A-Car
    • Chic Car Rent

  • How much should I expect to pay for a Seattle to Bangkok flight?

    Return flights from Seattle to Bangkok range from ฿23,551 to ฿34,208, with an average of ฿27,819 over the past 12 months. Anything below ฿23,551 counts as a good deal.

Your guide to booking Seattle to Bangkok flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Sunday departure instead of Friday. On this route, Sunday flights average ฿26,163 – about ฿2,705 less than Friday (9% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 8 weeks before you fly. On this route, that window historically saves about 14% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Bangkok trip for March. Fares historically average ฿25,174 return in that month – typically ฿17,552 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, hotels close to the airport you're flying into can be a convenient option.

    Near Bangkok Suvarnabhumi Airport

    · Regency Bangkok Suvarnabhumi Airpor
    · Siam Mandarina Bangkok Suvarnabhumi Airport Hotel (Free Shuttle)
    · Suvarnabhumi Ville Airport Hotel

    Near Bangkok Don Mueang Intl Airport

    · Amari Don Muang Airport Bangkok
    · The Royal Bee Apart Hotel
  • If you have scheduled an early morning flight from Seattle Tacoma International Airport (SEA) in Seattle to Bangkok and are looking for accommodation, look no further than Ramada by Wyndham SEATAC Airport Hotel. Located approximately 0.7 miles, it is conveniently accessible. As a result, you will wake up refreshed and avoid the early morning commute.
  • Passengers looking forward to traveling through SEA from Seattle with their four-legged companions should not panic as SEA is a furry-friendly airport. It features exceptional pet relief facilities equipped with fire hydrants, disposable waste bags and sinks. Located at Carousel 1/#door 02, Carousel 33/#door, Carousel 16/door# 26 and near the parking garage are easily accessible. So passengers can utilize these services before boarding their flight to Bangkok.
  • On your way to Bangkok, watch out for currency exchange counters at SEA, as in Bangkok, they use THB instead of USD. At SEA, you will find the currency exchange counters on concourse A, the baggage reclaims area and the main terminal. Alternatively, if you decide to exchange some of your dollars for Thai Baht at the arrival airport, Suvarnabhumi Airport in Bangkok (BKK), you will find currency exchange counters at the arrivals hall, basement level at the baggage claim area.
  • When you arrive at BKK airport in Bangkok and have some time before your airport shuttle transfer, you can visit the Chang Massage and Spa and pamper yourself with an excellent massage, facials, pedicures, manicures and aromatherapy to help you relieve some stress after a long flight from SEA. You can also get these services at the Miracle Transit hotel situated at Concourse G.
  • Passengers with limited mobility arriving at BKK in Bangkok can utilize the special services that the airport offers, such as wheelchair services and extra assistance. However, you can only access these services upon request. If you want to make use of these services, you can call your airline in advance and inform them of the services you need.

More options for your flight from Seattle to Bangkok

Complete your trip to Bangkok with a hotel stay or car hire