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Cheap Flights from Seattle (SEA) to Bangkok (BKK)

View AU$516 flight on Sun, 30 Aug 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Suvarnabhumi International Airport (BKK)

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Cheap Flights from Seattle (SEA) to Bangkok (BKK)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Wed, 4 Nov - Tue, 17 Nov
SEA
Seattle
BKK
Bangkok
AU$1,111 Return, found 3 days ago
AU$1,111
Return
found 3 days ago
Select Singapore Airlines flight, departing Wed, 4 Nov from Seattle to Bangkok, returning Tue, 17 Nov, priced at AU$1,111 found 3 days ago
Korean Air
Wed, 4 Nov - Tue, 17 Nov
SEA
Seattle
BKK
Bangkok
AU$1,259 Return, found 3 days ago
AU$1,259
Return
found 3 days ago
Select Korean Air flight, departing Wed, 4 Nov from Seattle to Bangkok, returning Tue, 17 Nov, priced at AU$1,259 found 3 days ago
Delta
Fri, 21 Aug - Tue, 8 Sept
SEA
Seattle
BKK
Bangkok
AU$1,310 Return, found 3 days ago
AU$1,310
Return
found 3 days ago
Select Delta flight, departing Fri, 21 Aug from Seattle to Bangkok, returning Tue, 8 Sept, priced at AU$1,310 found 3 days ago
United
Thu, 22 Oct - Tue, 3 Nov
SEA
Seattle
BKK
Bangkok
AU$1,340 Return, found 3 days ago
AU$1,340
Return
found 3 days ago
Select United flight, departing Thu, 22 Oct from Seattle to Bangkok, returning Tue, 3 Nov, priced at AU$1,340 found 3 days ago
Philippine Airlines
Sun, 16 Aug - Sun, 23 Aug
SEA
Seattle
BKK
Bangkok
AU$1,350 Return, found 6 days ago
AU$1,350
Return
found 6 days ago
Select Philippine Airlines flight, departing Sun, 16 Aug from Seattle to Bangkok, returning Sun, 23 Aug, priced at AU$1,350 found 6 days ago
All Nippon Airways
Wed, 4 Nov - Tue, 17 Nov
SEA
Seattle
BKK
Bangkok
AU$1,371 Return, found 3 days ago
AU$1,371
Return
found 3 days ago
Select All Nippon Airways flight, departing Wed, 4 Nov from Seattle to Bangkok, returning Tue, 17 Nov, priced at AU$1,371 found 3 days ago
Japan Airlines
Fri, 21 Aug - Tue, 8 Sept
SEA
Seattle
BKK
Bangkok
AU$1,407 Return, found 3 days ago
AU$1,407
Return
found 3 days ago
Select Japan Airlines flight, departing Fri, 21 Aug from Seattle to Bangkok, returning Tue, 8 Sept, priced at AU$1,407 found 3 days ago
Asiana Airlines
Wed, 4 Nov - Tue, 17 Nov
SEA
Seattle
BKK
Bangkok
AU$1,506 Return, found 3 days ago
AU$1,506
Return
found 3 days ago
Select Asiana Airlines flight, departing Wed, 4 Nov from Seattle to Bangkok, returning Tue, 17 Nov, priced at AU$1,506 found 3 days ago
China Airlines
Fri, 21 Aug - Tue, 8 Sept
SEA
Seattle
BKK
Bangkok
AU$1,553 Return, found 3 days ago
AU$1,553
Return
found 3 days ago
Select China Airlines flight, departing Fri, 21 Aug from Seattle to Bangkok, returning Tue, 8 Sept, priced at AU$1,553 found 3 days ago
EVA Airways
Wed, 4 Nov - Tue, 17 Nov
SEA
Seattle
BKK
Bangkok
AU$1,567 Return, found 3 days ago
AU$1,567
Return
found 3 days ago
Select EVA Airways flight, departing Wed, 4 Nov from Seattle to Bangkok, returning Tue, 17 Nov, priced at AU$1,567 found 3 days ago

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bangkok (BKK-Suvarnabhumi Intl.) cost?
You can find one-way and return flights from SEA to BKK with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when SEA to BKK ticket fares go up or down.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
The cheapest months to fly from SEA to BKK are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seattle, WA (SEA) to Bangkok (BKK)?
Enter SEA to BKK and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Seattle, WA (SEA) to Bangkok (BKK)?
To find a cheap flight from Seattle, WA (SEA) to Bangkok (BKK), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
While there aren't any direct flights, you'll find approximately 62 connecting flights per day from Seattle - Tacoma Intl. (SEA) to Suvarnabhumi Intl. (BKK). Some common connection points include Los Angeles Intl. (LAX), San Francisco Intl. (SFO), and Vancouver Intl. (YVR).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Suvarnabhumi Intl. (BKK) typically departs around 12:10 AM. This service is operated by EVA Airways. This is a seasonal service, active in January, February, March, November, and December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
You'll typically find the most flights from Seattle - Tacoma Intl. (SEA) to Suvarnabhumi Intl. (BKK) on a Friday, with around 93 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, United, and Delta. While Fridays offer the most choices, flight options are quite consistent throughout the week, so you should be able to find a suitable flight on other days as well.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Suvarnabhumi Intl. (BKK) are in the afternoon, from 3pm to 6pm. Many major carriers, including Emirates, All Nippon Airways and Alaska Airlines, offer flights during this window. Many travellers prefer this time because it allows for a full day of activities before heading to the airport, and you'll arrive in Bangkok ready to start your adventure.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
There are no nonstop flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bangkok (BKK-Suvarnabhumi Intl.). The distance between these two cities is approximately 11,988 kilometers. Flights with one stop typically take around 20 hours 30 minutes. If your journey involves two or more stops, you can expect the travel time to be longer, usually around 24 hours 50 minutes. Keep in mind that actual flight times can vary due to factors like routing, weather, and wind patterns.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bangkok (BKK-Suvarnabhumi Intl.)?
Yes, you can fly business class or first class between SEA and BKK. Airlines that offer business class service on this route include:
  • Emirates
  • Korean Air
  • Singapore Airlines
  • Air France
  • Lufthansa
  • Qatar Airways
  • Turkish Airlines
  • Aer Lingus
  • Cathay Pacific
  • Alaska Airlines
  • Asiana Airlines
  • Japan Airlines
  • China Airlines
  • Hainan Airlines
  • Horizon Air
  • British Airways
  • Air Canada
  • Condor
  • Delta
  • Hawaiian Airlines
  • Starlux Airlines
  • Edelweiss Air
  • All Nippon Airways
  • United
  • Finnair
  • Philippine Airlines
  • Virgin Atlantic
  • EVA Airways
  • American Airlines
First class cabins are available on Emirates, British Airways, and Starlux Airlines.
How do I earn miles on a Seattle, WA (SEA) to Bangkok (BKK) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA) to Bangkok (BKK) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Bangkok (BKK) from Seattle, WA (SEA)?
If you're planning to travel to Bangkok from Seattle - Tacoma Intl. (SEA), you can fly directly into Suvarnabhumi Intl. (BKK). Some flights may connect through major hubs like San Francisco Intl. (SFO), Los Angeles Intl. (LAX), or Vancouver Intl. (YVR) before reaching Bangkok. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA) to Bangkok (BKK) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA) to Bangkok (BKK) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA) to Bangkok (BKK) flight and hotel package?
Securing a Seattle, WA (SEA) to Bangkok (BKK) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA) to Bangkok (BKK)?
If you booked your Seattle, WA (SEA) to Bangkok (BKK) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Suvarnabhumi Intl.
Return price
AU$1,111
Distance
11917 km

Book with confidence

Your quick guide to flights from Seattle to Bangkok

Pick up great flights from Seattle to Bangkok

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Seattle to Bangkok. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Seattle to Bangkok that take around hours.

Find cheap flights from Seattle to Bangkok

From the great flight deals with prices currently ranging from AU$1,111 to AU$1,567, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Seattle to Bangkok around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Bangkok is normally in November.

Reasons to book your flight from Seattle to Bangkok with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Seattle to Bangkok across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Bangkok right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Seattle to Bangkok

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