Bangkok

$338+ Cheap flights from Seattle (SEA) to Bangkok

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
May 10 — May 171
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Cheap flight deals from Seattle to Bangkok

Cheapest flights from Seattle to Bangkok
Explore the most affordable flight options available from Seattle to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 10, 2026.

This oojo deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:15 am
SEA
-
BKK
1 stop19h 45m
Singapore Airlines
Mon 11/28:00 pm
BKK
-
SEA
1 stop26h 10m
Singapore Airlines
Deal found 4/9$648
This oojo deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:15 am
SEA
-
BKK
1 stop41h 00m
Singapore Airlines
Thu 11/59:35 am
BKK
-
SEA
1 stop36h 35m
Singapore Airlines
Deal found 4/5$654
This oojo deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:15 am
SEA
-
BKK
1 stop41h 00m
Singapore Airlines
Thu 10/299:35 am
BKK
-
SEA
1 stop36h 35m
Singapore Airlines
Deal found 4/8$655
This oojo deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:15 am
SEA
-
BKK
1 stop42h 45m
Singapore Airlines
Fri 10/239:20 am
BKK
-
SEA
1 stop37h 25m
Singapore Airlines
Deal found 4/9$659
This oojo deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:15 am
SEA
-
BKK
1 stop19h 45m
Singapore Airlines
Mon 11/169:35 am
BKK
-
SEA
1 stop36h 35m
Singapore Airlines
Deal found 4/6$665
This oojo deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:15 am
SEA
-
BKK
1 stop38h 00m
Singapore Airlines
Mon 9/1412:15 pm
BKK
-
SEA
1 stop34h 30m
Singapore Airlines
Deal found 4/6$687
This oojo deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:15 am
SEA
-
BKK
1 stop41h 00m
Singapore Airlines
Sat 10/318:00 pm
BKK
-
SEA
1 stop26h 10m
Singapore Airlines
Deal found 4/8$688
This oojo deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1710:15 am
SEA
-
BKK
1 stop42h 45m
Singapore Airlines
Sat 10/241:35 pm
BKK
-
SEA
1 stop32h 35m
Singapore Airlines
Deal found 4/8$701
This oojo deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/410:15 am
SEA
-
BKK
1 stop41h 00m
Singapore Airlines
Thu 10/299:35 am
BKK
-
SEA
1 stop36h 35m
Singapore Airlines
Deal found 4/9$702
This Mytrip deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:55 am
SEA
-
DMK
2 stops32h 10m
Multiple Airlines
Mon 9/147:30 am
DMK
-
SEA
2 stops21h 25m
Multiple Airlines
Deal found 4/10$1,124
This Mytrip deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:55 am
SEA
-
DMK
2 stops32h 10m
Multiple Airlines
Tue 9/87:30 am
DMK
-
SEA
2 stops21h 25m
Multiple Airlines
Deal found 4/7$1,126
This Mytrip deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1412:55 am
SEA
-
DMK
2 stops32h 10m
Multiple Airlines
Fri 10/27:30 am
DMK
-
SEA
2 stops21h 25m
Multiple Airlines
Deal found 4/9$1,134

Find flight deals from Seattle to Bangkok

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Bangkok (TH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 10, 2026.

Round-trip from

$648
(oojo)

One-way from

$338
(oojo)

Popular in

June

Cheapest in

September

Average price

$800
From Seattle/Tacoma Intl to Bangkok
One-way flight from Seattle/Tacoma Intl to Bangkok
Highest demand for flights based on searches. 14% potential increase in price ($145 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
Average for round-trip flights in April 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Bangkok that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 10, 2026.
Use the filters below to find and compare flights from Seattle to Bangkok that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 4/27

12:50 pm-9:45 pm

1 stop18h 55m

Bangkok Suvarnabhumi

Tue 5/19

9:40 pm-3:05 pm

2 stops31h 25m

$870

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/26

7:59 pm-9:45 pm

2 stops35h 46m

Bangkok Suvarnabhumi

Wed 5/20

11:30 pm-8:30 pm

2 stops35h 00m

$875

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 4/28

7:00 am-11:35 pm

2 stops26h 35m

Bangkok Suvarnabhumi

Mon 5/11

9:40 pm-10:40 am

1 stop27h 00m

$901

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 4/29

12:50 pm-9:45 pm

1 stop18h 55m

Bangkok Suvarnabhumi

Tue 5/19

9:40 pm-4:01 pm

2 stops32h 21m

$1,070

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 4/30

8:45 am-9:35 am

2 stops34h 50m

Bangkok Suvarnabhumi

Tue 5/19

3:45 pm-2:36 pm

3 stops36h 51m

$1,199
Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 7/4

1:05 pm-11:35 pm

1 stop20h 30m

Bangkok Suvarnabhumi

Mon 7/13

9:50 am-1:41 pm

1 stop17h 51m

$1,207

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 5/19

5:15 pm-12:15 pm

1 stop29h 00m

Bangkok Suvarnabhumi

Tue 6/2

3:40 am-1:25 pm

1 stop23h 45m

$1,244

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 5/1

7:36 pm-9:35 am

3 stops47h 59m

Bangkok Suvarnabhumi

Fri 5/15

3:45 pm-9:06 pm

3 stops43h 21m

$1,292

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 5/11

4:20 pm-11:35 pm

2 stops41h 15m

Bangkok Suvarnabhumi

Thu 5/14

9:40 pm-4:53 pm

2 stops33h 13m

$1,320

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 6/11

5:15 pm-12:30 pm

1 stop29h 15m

Bangkok Suvarnabhumi

Sat 7/4

2:50 am-1:25 pm

1 stop24h 35m

$1,357

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Showing 1-10 of 45 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Bangkok

Have a flexible travel schedule? Discover the best time to fly to Bangkok from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Bangkok

How far ahead should I book a flight from Seattle to Bangkok?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Bangkok. Price data was last updated on April 3, 2026.

To ensure you get the cheapest price possible for a flight from Seattle to Bangkok, you should look to book at least 74 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to Bangkok?

Currently, April is the cheapest month in which you can book a flight from Seattle to Bangkok (average of $508). Flying from Seattle to Bangkok in June is currently the most expensive (average of $792). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to Bangkok?

Reviews of airlines servicing Bangkok

Get insights into the airlines that provide service to Bangkok. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bangkok. Reviews last updated April 10, 2026.
Read reviews from past customers who have flown STARLUX Airlines,EVA Air, andChina Airlines from Seattle to Bangkok. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

8.7

Crew

9.2

Overall

8.9

Entertainment

8.8

Comfort

8.9

Boarding

9.0

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

Food

8.7

Crew

9.2

Overall

8.9

Entertainment

8.8

Comfort

8.9

Boarding

9.0

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

Food

8.7

Crew

9.2

Overall

8.9

Entertainment

8.8

Comfort

8.9

Boarding

9.0

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

Food

8.7

Crew

9.2

Overall

8.9

Entertainment

8.8

Comfort

8.9

Boarding

9.0

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

Food

8.7

Crew

9.2

Overall

8.9

Entertainment

8.8

Comfort

8.9

Boarding

9.0

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

Food

8.7

Crew

9.2

Overall

8.9

Entertainment

8.8

Comfort

8.9

Boarding

9.0

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Bangkok. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Seattle to Bangkok?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Bangkok. 15 airlines have flights from Seattle/Tacoma Intl to Bangkok on a regular basis. Booking flights from Seattle/Tacoma Intl to Bangkok should not be difficult; the airport handles an average of 0 outbound flights to Bangkok per day.

  • How long is the flight from Seattle to Bangkok?

    Korean Air and United Airlines can get you from Seattle to Bangkok in just under 18h 55m. Your travel time can differ by up to 15h 55m. There are 7443 mi between Seattle and Bangkok. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Seattle to Bangkok round-trip?

    Philippine Airlines, at $149, was found to be the cheapest airline from Seattle to Bangkok.Alternate airlines to your destination round-trip include Singapore Airlines and Air Canada. Philippine Airlines is 82% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Bangkok one-way?

    $275 is the cheapest one-way deal found within the past few days, from Singapore Airlines. You may also be able to find cheap deals on Philippine Airlines and Asiana Airlines, with prices starting from $301 and $348, respectively.

  • Where are the most common layover locations when flying from Seattle to Bangkok?

  • What are some popular things to do or see while on a layover in Taipei City?

    Taipei 101, Raohe Street Night Market, and Shilin Night Market are currently the most popular points of interest in Taipei City at the moment. Those on a layover in Taipei City interested in visiting Taipei 101, Raohe Street Night Market, or Shilin Night Market can do so by traveling 21.0 mi, 21.6 mi, and 18.3 mi, respectively from Taipei City Taiwan Taoyuan Intl. Travelers can book a car rental at Taipei City Taiwan Taoyuan Intl for about $71 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Seoul?

    The majority of Seoul visitors spend their time at Dongdaemun Market, Lotte World, and Gwanghwamun. Dongdaemun Market, Lotte World, and Gwanghwamun can be accessed by traveling approximately 31.6 mi, 35.7 mi, and 30.1 mi, respectively from Incheon Intl. Travelers in need of a car in Seoul can rent one for about $48 per day.

  • What are points of interest worth seeing during a layover in Singapore?

    Most Singapore visitors opt to spend their time at Sentosa, Universal Studios Singapore, and Merlion. Sentosa, Universal Studios Singapore and Merlion are located about 13.4 mi, 13.4 mi, and 10.5 mi, respectively from Singapore Changi if you are interested in checking them out. Those on a layover in Singapore in need of a rental car can book one at Singapore Changi for about $92.

  • Where are the least popular layover locations for Seattle to Bangkok flights?

  • Can I find deals for flights from Seattle to Bangkok that include hotel bookings?

    Yes. In addition to deals on Seattle to Bangkok flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Bangkok?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Bangkok.

  • Can I find deals for business class flights from Seattle to Bangkok?

    Yes. Cheapflights offers flight deals from Seattle to Bangkok by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Bangkok?

    Currently, April is the cheapest month in which you can book a flight from Seattle to Bangkok (average of $508). Flying from Seattle to Bangkok in June is currently the most expensive (average of $792). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Seattle to Bangkok

Discover the top 10 airlines that operate flights from Seattle to Bangkok. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest$149Average$682FlexibilityNo cancel feeOn-time60%
Singapore AirlinesCheapest$510Average$662FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$623Average$1,882FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$627Average$691FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$656Average$741FlexibilityNo cancel feeOn-time81%
ANACheapest$680Average$847FlexibilityNo cancel feeOn-time80%
DeltaCheapest$694Average$856FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$697Average$906FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$704Average$798FlexibilityNo cancel feeOn-time72%
China AirlinesCheapest$712Average$809FlexibilityNo cancel feeOn-time70%

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