Bangkok

$325+ 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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Mar 19 — Mar 261
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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 February 17, 2026.

This CrystalTravel deal was found by Cheapflights users on 2/14. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:55 am
SEA
-
BKK
1 stop19h 45m
Asiana Airlines
Sun 9/611:45 am
BKK
-
SEA
1 stop17h 10m
Asiana Airlines
Deal found 2/14$643
This FlightHub deal was found by Cheapflights users on 2/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:15 am
SEA
-
BKK
1 stop21h 15m
Singapore Airlines
Sat 10/178:15 pm
BKK
-
SEA
1 stop26h 30m
Singapore Airlines
Deal found 2/17$645
This FlightHub deal was found by Cheapflights users on 2/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:15 am
SEA
-
BKK
1 stop21h 15m
Singapore Airlines
Thu 10/226:30 pm
BKK
-
SEA
1 stop28h 15m
Singapore Airlines
Deal found 2/15$646
This oojo deal was found by Cheapflights users on 2/15. 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.
Wed 10/711:10 pm
SEA
-
BKK
1 stop23h 00m
Philippine Airlines
Wed 10/141:25 pm
BKK
-
SEA
1 stop20h 40m
Philippine Airlines
Deal found 2/15$648
This oojo deal was found by Cheapflights users on 2/17. 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 2/2212:10 am
SEA
-
BKK
1 stop30h 50m
Asiana Airlines
Mon 3/912:20 pm
BKK
-
SEA
1 stop16h 35m
Asiana Airlines
Deal found 2/17$651
This Ovago deal was found by Cheapflights users on 2/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:59 pm
SEA
-
BKK
2 stops27h 21m
Multiple Airlines
Mon 4/2712:15 pm
BKK
-
SEA
1 stop34h 30m
Multiple Airlines
Deal found 2/15$652
This oojo deal was found by Cheapflights users on 2/14. 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.
Wed 2/1812:10 am
SEA
-
BKK
1 stop30h 50m
Asiana Airlines
Sat 3/1412:20 pm
BKK
-
SEA
1 stop16h 35m
Asiana Airlines
Deal found 2/14$653
This FlightHub deal was found by Cheapflights users on 2/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/109:45 am
SEA
-
BKK
1 stop20h 15m
Singapore Airlines
Mon 4/201:35 pm
BKK
-
SEA
1 stop33h 10m
Singapore Airlines
Deal found 2/16$654
This Bravofly deal was found by Cheapflights users on 2/16. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1811:00 am
SEA
-
BKK
1 stop22h 45m
Korean Air
Mon 3/29:30 pm
BKK
-
SEA
1 stop26h 30m
Korean Air
Deal found 2/16$655
This oojo deal was found by Cheapflights users on 2/15. 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.
Wed 3/411:00 am
SEA
-
BKK
1 stop22h 45m
Korean Air
Wed 3/119:30 pm
BKK
-
SEA
1 stop26h 30m
Korean Air
Deal found 2/15$657
This Gurufare deal was found by Cheapflights users on 2/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1210:15 am
SEA
-
BKK
1 stop36h 05m
Multiple Airlines
Tue 4/283:30 pm
BKK
-
SEA
2 stops31h 59m
Multiple Airlines
Deal found 2/17$658
This FlightHub deal was found by Cheapflights users on 2/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/612:55 am
SEA
-
BKK
1 stop32h 25m
Asiana Airlines
Mon 4/201:20 am
BKK
-
SEA
1 stop27h 35m
Asiana Airlines
Deal found 2/17$659

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 February 17, 2026.

Round-trip from

$646
(CrystalTravel)

One-way from

$325
(Singapore Airlines)

Popular in

December

Cheapest in

September

Average price

$761
From Seattle/Tacoma Intl to Bangkok
One-way flight from Seattle/Tacoma Intl to Bangkok
Highest demand for flights based on searches. 6% potential increase in price ($57 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Average for round-trip flights in February 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 February 17, 2026.
Use the filters below to find and compare flights from Seattle to Bangkok that are best for you.

Fly from

Seattle

Fly to

Bangkok

Route

Depart

Return

Price

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 3/4

11:30 am-12:55 am

1 stop22h 25m

Bangkok Suvarnabhumi

Wed 3/11

9:30 pm-2:20 pm

1 stop30h 50m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 3/4

11:30 am-12:45 am

1 stop22h 15m

Bangkok Suvarnabhumi

Thu 3/12

12:55 am-2:20 pm

1 stop27h 25m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 3/3

11:30 am-12:45 am

1 stop22h 15m

Bangkok Suvarnabhumi

Tue 3/17

2:05 am-2:20 pm

1 stop26h 15m

$698

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 3/7

11:00 am-12:55 am

1 stop22h 55m

Bangkok Suvarnabhumi

Wed 3/18

2:05 am-10:00 am

1 stop21h 55m

$701

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 3/6

11:00 am-12:45 am

1 stop22h 45m

Bangkok Suvarnabhumi

Thu 3/12

2:05 am-10:00 am

1 stop21h 55m

$701

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 3/5

11:00 am-12:45 am

1 stop22h 45m

Bangkok Suvarnabhumi

Wed 3/11

9:30 pm-10:00 am

1 stop26h 30m

$701

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 2/22

11:00 am-12:55 am

1 stop22h 55m

Bangkok Suvarnabhumi

Mon 3/2

9:30 pm-9:00 am

1 stop26h 30m

$701

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 3/7

11:00 am-12:55 am

1 stop22h 55m

Bangkok Suvarnabhumi

Thu 3/12

12:55 am-10:00 am

1 stop23h 05m

$701

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 4/25

12:50 pm-11:35 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Tue 5/5

9:40 pm-10:40 am

1 stop27h 00m

$701

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 4/29

12:50 pm-1:35 pm

1 stop34h 45m

Bangkok Suvarnabhumi

Mon 5/18

9:50 am-10:40 am

1 stop38h 50m

$701

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/15

Showing 1-10 of 42 results
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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 February 13, 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 $511). Flying from Seattle to Bangkok in June is currently the most expensive (average of $784). 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 February 17, 2026.
Read reviews from past customers who have flown STARLUX Airlines, EVA Air, and ANA 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.

Entertainment

8.8

Boarding

8.9

Overall

8.9

Food

8.7

Comfort

8.9

Crew

9.2

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.

Entertainment

8.8

Boarding

8.9

Overall

8.9

Food

8.7

Comfort

8.9

Crew

9.2

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.

Entertainment

8.8

Boarding

8.9

Overall

8.9

Food

8.7

Comfort

8.9

Crew

9.2

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.
8.4
Very good

Entertainment

8.8

Boarding

8.9

Overall

8.9

Food

8.7

Comfort

8.9

Crew

9.2

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.

Entertainment

8.8

Boarding

8.9

Overall

8.9

Food

8.7

Comfort

8.9

Crew

9.2

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.

Entertainment

8.8

Boarding

8.9

Overall

8.9

Food

8.7

Comfort

8.9

Crew

9.2

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. 16 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?

    Delta and Korean Air can get you from Seattle to Bangkok in just under 22h 25m. Your travel time can differ by up to 30m. 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 $154, was found to be the cheapest airline from Seattle to Bangkok.Alternate airlines to your destination round-trip include Singapore Airlines and Asiana Airlines. 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?

    $277 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, Shilin Night Market, and Raohe Street 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, Shilin Night Market, or Raohe Street Night Market can do so by traveling 21.0 mi, 18.3 mi, and 21.6 mi, respectively from Taipei City Taiwan Taoyuan Intl. Travelers can book a car rental at Taipei City Taiwan Taoyuan Intl for about $80 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 Bukchon Hanok Village. Dongdaemun Market, Lotte World, and Bukchon Hanok Village can be accessed by traveling approximately 31.6 mi, 35.7 mi, and 30.6 mi, respectively from Incheon Intl. Travelers in need of a car in Seoul can rent one for about $56 per day.

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

    Most Tokyo visitors opt to spend their time at Akihabara Electric Town, Tsukiji Outer Market, and Tokyo Tower. Akihabara Electric Town, Tsukiji Outer Market and Tokyo Tower are located about 10.3 mi, 7.9 mi, and 7.9 mi, respectively from Tokyo Haneda if you are interested in checking them out. Those on a layover in Tokyo in need of a rental car can book one at Tokyo Haneda for about $61.

  • 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 $511). Flying from Seattle to Bangkok in June is currently the most expensive (average of $784). 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

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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 February 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest$154Average$700FlexibilityNo cancel feeOn-time60%
Singapore AirlinesCheapest$514Average$685FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$626Average$689FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$663Average$750FlexibilityNo cancel feeOn-time81%
ANACheapest$683Average$879FlexibilityNo cancel feeOn-time80%
DeltaCheapest$694Average$862FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$700Average$907FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$731Average$819FlexibilityNo cancel feeOn-time70%
Cathay PacificCheapest$735Average$880FlexibilityNo cancel feeOn-time72%
STARLUX AirlinesCheapest$740Average$852FlexibilityNo cancel feeOn-timeN/A

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