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$460+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Jun 12 — Jun 191
Fri 6/12
Fri 6/19
1 adult, Economy
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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 May 13, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/38:45 am
SEA
-
BKK
1 stop38h 50m
Singapore Airlines
Thu 11/121:35 pm
BKK
-
SEA
1 stop32h 35m
Singapore Airlines
Deal found 5/9$878
This oojo deal was found by Cheapflights users on 5/11. 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 10/73:20 pm
SEA
-
BKK
2 stops26h 45m
Singapore Airlines
Wed 10/149:15 pm
BKK
-
SEA
1 stop25h 30m
Singapore Airlines
Deal found 5/11$885
This oojo deal was found by Cheapflights users on 5/8. 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 11/58:45 am
SEA
-
BKK
1 stop32h 40m
Singapore Airlines
Tue 12/13:50 pm
BKK
-
SEA
2 stops32h 02m
Singapore Airlines
Deal found 5/8$893
This oojo deal was found by Cheapflights users on 5/11. 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 11/18:45 am
SEA
-
BKK
1 stop43h 00m
Singapore Airlines
Tue 12/13:50 pm
BKK
-
SEA
2 stops33h 01m
Singapore Airlines
Deal found 5/11$902
This FlightHub deal was found by Cheapflights users on 5/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:55 pm
SEA
-
BKK
2 stops49h 50m
SAUDIA
Mon 9/281:50 am
BKK
-
SEA
2 stops34h 26m
SAUDIA
Deal found 5/10$904
This oojo deal was found by Cheapflights users on 5/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:20 pm
SEA
-
BKK
2 stops29h 00m
Singapore Airlines
Mon 11/99:35 am
BKK
-
SEA
1 stop36h 35m
Singapore Airlines
Deal found 5/10$906
This oojo deal was found by Cheapflights users on 5/11. 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 11/48:45 am
SEA
-
BKK
1 stop20h 15m
Singapore Airlines
Wed 11/118:00 pm
BKK
-
SEA
1 stop50h 10m
Singapore Airlines
Deal found 5/11$907
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:00 pm
SEA
-
BKK
1 stop20h 35m
Delta
Sun 9/1311:30 pm
BKK
-
SEA
1 stop28h 07m
Delta
Deal found 5/8$908
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1011:10 pm
SEA
-
BKK
1 stop33h 30m
Philippine Airlines
Tue 9/1511:40 pm
BKK
-
SEA
1 stop34h 25m
Philippine Airlines
Deal found 5/10$909
This KAYAK deal was found by Cheapflights users on 5/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:00 am
SEA
-
BKK
1 stop22h 00m
Hainan Airlines
Fri 11/61:05 am
BKK
-
SEA
1 stop21h 55m
Hainan Airlines
Deal found 5/8$910
This oojo deal was found by Cheapflights users on 5/11. 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.
Mon 8/316:01 pm
SEA
-
BKK
2 stops28h 19m
Singapore Airlines
Wed 9/309:20 am
BKK
-
SEA
1 stop37h 25m
Singapore Airlines
Deal found 5/11$911
This Mytrip deal was found by Cheapflights users on 5/10. 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 5/1112:10 am
SEA
-
DMK
2 stops34h 05m
Multiple Airlines
Wed 5/203:00 am
DMK
-
SEA
2 stops26h 15m
Multiple Airlines
Deal found 5/10$1,038

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 May 13, 2026.

Round-trip from

$878
(Kiwi.com)

One-way from

$460
(SmartFares)

Popular in

June

Cheapest in

September

Average price

$901
From Seattle/Tacoma Intl to Bangkok
Search Deals
One-way flight from Seattle/Tacoma Intl to Bangkok
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 May 13, 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

Thu 9/3

4:30 pm-9:35 am

2 stops27h 05m

Bangkok Suvarnabhumi

Wed 9/9

9:35 am-2:25 pm

1 stop18h 50m

$977

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 9/23

3:33 pm-9:35 am

3 stops28h 02m

Bangkok Suvarnabhumi

Mon 9/28

9:35 am-2:25 pm

1 stop18h 50m

$982

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/1

4:45 pm-9:35 am

2 stops26h 50m

Bangkok Suvarnabhumi

Tue 9/15

9:35 am-8:43 pm

2 stops25h 08m

$987

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 10/22

6:51 pm-9:35 am

2 stops24h 44m

Bangkok Suvarnabhumi

Thu 11/5

7:10 am-9:12 pm

3 stops29h 02m

$990

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 8/5

3:33 pm-9:35 am

3 stops28h 02m

Bangkok Suvarnabhumi

Wed 8/19

9:35 am-11:26 pm

2 stops27h 51m

$992

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 10/6

6:29 am-11:55 pm

2 stops27h 26m

Bangkok Suvarnabhumi

Wed 10/21

7:00 am-9:15 pm

3 stops28h 15m

$994

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 11/1

3:30 pm-5:10 am

2 stops46h 40m

Bangkok Suvarnabhumi

Sun 11/15

4:55 pm-12:12 pm

2 stops34h 17m

$1,013

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 10/2

6:51 pm-9:35 am

2 stops24h 44m

Bangkok Suvarnabhumi

Thu 10/15

9:35 am-2:25 pm

1 stop18h 50m

$1,017

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/29

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Sat 10/10

3:45 pm-12:20 pm

3 stops34h 35m

$1,034
Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 10/17

1:15 am-9:45 am

1 stop18h 30m

Bangkok Suvarnabhumi

Sun 12/13

5:50 pm-6:10 pm

1 stop15h 20m

$1,048

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/8

Showing 1-10 of 42 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?

To ensure you get the cheapest price possible for a flight from Seattle to Bangkok, you should look to book at least 73 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 $140). Flying from Seattle to Bangkok in February is currently the most expensive (average of $1,429). 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 May 13, 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.
STARLUX Airlines
8.9
Very good
314 reviews

Food

8.7

Crew

9.2

Comfort

8.9

Overall

8.9

Boarding

9.0

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
STARLUX Airlines
8.9
Very good
314 reviews
STARLUX Airlines
8.9
Very good
314 reviews

Food

8.7

Crew

9.2

Comfort

8.9

Overall

8.9

Boarding

9.0

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
EVA Air
8.5
Very good
1,445 reviews
STARLUX Airlines
8.9
Very good
314 reviews

Food

8.7

Crew

9.2

Comfort

8.9

Overall

8.9

Boarding

9.0

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
China Airlines
8.3
Very good
826 reviews
STARLUX Airlines
8.9
Very good
314 reviews

Food

8.7

Crew

9.2

Comfort

8.9

Overall

8.9

Boarding

9.0

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
Singapore Airlines
8.2
Very good
1,510 reviews
STARLUX Airlines
8.9
Very good
314 reviews

Food

8.7

Crew

9.2

Comfort

8.9

Overall

8.9

Boarding

9.0

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
Asiana Airlines
8.1
Very good
532 reviews
STARLUX Airlines
8.9
Very good
314 reviews

Food

8.7

Crew

9.2

Comfort

8.9

Overall

8.9

Boarding

9.0

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again

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?

    United Airlines and Emirates can get you from Seattle to Bangkok in just under 28h 02m. Your travel time can differ by up to 08m. 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 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 Hainan Airlines, with prices starting from $301 and $331, respectively.

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

    The most popular layover on flights from Seattle to Bangkok is Taipei City. Taipei City is followed by Seoul in terms of the most popular layover location on flights from Seattle to Bangkok. Singapore ranks third in terms of the most popular layover location on Seattle to Bangkok flights.

  • 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 $49 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 $88.

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

    Seattle to Bangkok flights have a layover in Istanbul the least frequently. Seattle to Bangkok flights stopping in Tokyo are the next rarest. Manila follows Tokyo in terms of the least frequent layover locations on 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 $140). Flying from Seattle to Bangkok in February is currently the most expensive (average of $1,429). 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 May 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest$154Average$680FlexibilityNo cancel feeOn-time60%
Singapore AirlinesCheapest$510Average$657FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$623Average$1,685FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$626Average$690FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$652Average$721FlexibilityNo cancel feeOn-time81%
ANACheapest$680Average$849FlexibilityNo cancel feeOn-time80%
DeltaCheapest$694Average$862FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$697Average$910FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$705Average$805FlexibilityNo cancel feeOn-time72%
China AirlinesCheapest$728Average$813FlexibilityNo cancel feeOn-time70%

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