Thailand

$413+ Cheap flights from Seattle (SEA) to Thailand

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Jun 19 — Jun 261
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Cheap flight deals from Seattle to Thailand

Cheapest flights from Seattle to Thailand
Explore the most affordable flight options available from Seattle to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 20, 2026.

This oojo deal was found by Cheapflights users on 5/19. 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 10/2010:15 am
SEA
-
HKT
1 stop19h 35m
Singapore Airlines
Tue 11/310:05 am
HKT
-
SEA
1 stop36h 05m
Singapore Airlines
Deal found 5/19$674
This oojo deal was found by Cheapflights users on 5/17. 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.
Thu 10/2210:15 am
SEA
-
HKT
1 stop34h 35m
Singapore Airlines
Sat 10/318:40 am
HKT
-
SEA
1 stop37h 30m
Singapore Airlines
Deal found 5/17$681
This oojo deal was found by Cheapflights users on 5/19. 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
-
HKT
1 stop19h 00m
Singapore Airlines
Fri 10/308:40 am
HKT
-
SEA
1 stop37h 30m
Singapore Airlines
Deal found 5/19$684
This oojo deal was found by Cheapflights users on 5/19. 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 10/1510:15 am
SEA
-
HKT
1 stop32h 20m
Singapore Airlines
Mon 10/2610:05 am
HKT
-
SEA
1 stop36h 05m
Singapore Airlines
Deal found 5/19$685
This oojo deal was found by Cheapflights users on 5/17. 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.
Sat 10/1010:15 am
SEA
-
HKT
1 stop19h 35m
Singapore Airlines
Mon 10/268:40 am
HKT
-
SEA
1 stop37h 30m
Singapore Airlines
Deal found 5/17$715
This oojo deal was found by Cheapflights users on 5/17. 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 9/610:15 am
SEA
-
HKT
1 stop19h 00m
Singapore Airlines
Wed 9/169:20 am
HKT
-
SEA
1 stop37h 25m
Singapore Airlines
Deal found 5/17$729
This oojo deal was found by Cheapflights users on 5/19. 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 10/195:01 pm
SEA
-
HKT
2 stops27h 49m
Singapore Airlines
Thu 10/292:55 pm
HKT
-
SEA
1 stop31h 15m
Singapore Airlines
Deal found 5/19$816
This oojo deal was found by Cheapflights users on 5/18. 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 11/38:45 am
SEA
-
HKT
1 stop33h 30m
Singapore Airlines
Sun 11/298:15 pm
HKT
-
SEA
1 stop49h 55m
Singapore Airlines
Deal found 5/18$840
This FlightHub deal was found by Cheapflights users on 5/15. 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.
Sat 10/310:15 am
SEA
-
CNX
1 stop40h 20m
Singapore Airlines
Wed 10/1411:30 am
CNX
-
SEA
1 stop35h 15m
Singapore Airlines
Deal found 5/15$866
This Singapore Airlines deal was found by Cheapflights users on 5/16. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:45 am
SEA
-
USM
1 stop32h 15m
Singapore Airlines
Thu 12/108:55 am
USM
-
SEA
1 stop37h 15m
Singapore Airlines
Deal found 5/16$885
This FlightHub deal was found by Cheapflights users on 5/19. 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.
Thu 10/110:15 am
SEA
-
CNX
1 stop40h 20m
Singapore Airlines
Tue 10/135:35 pm
CNX
-
SEA
1 stop53h 10m
Singapore Airlines
Deal found 5/19$905
This FlightHub deal was found by Cheapflights users on 5/15. 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.
Thu 10/1510:15 am
SEA
-
USM
1 stop41h 05m
Singapore Airlines
Sun 10/187:45 pm
USM
-
SEA
1 stop51h 00m
Singapore Airlines
Deal found 5/15$922

Find flight deals from Seattle to Thailand

Keep the following information in mind while searching for Seattle to Thailand flight deals. Data was last updated May 20, 2026.

Round-trip from

$674
(oojo)

One-way from

$413
(SmartFares)

Popular in

June

Cheapest in

September

Average price

$903
From Seattle/Tacoma Intl to Thailand
One-way flight from Seattle/Tacoma Intl to Thailand
Highest demand for flights based on searches. 14% potential increase in price ($150 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Average for round-trip flights in May 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Thailand 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 20, 2026.
Use the filters below to find and compare flights from Seattle to Thailand that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 11/4

3:40 pm-5:10 am

1 stop22h 30m

Bangkok Suvarnabhumi

Tue 11/10

9:10 am-1:20 pm

1 stop19h 10m

$973

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/1

12:15 pm-9:35 am

2 stops31h 20m

Bangkok Suvarnabhumi

Tue 9/15

9:35 am-2:25 pm

1 stop18h 50m

$977

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 8/25

9:00 am-9:35 am

3 stops34h 35m

Bangkok Suvarnabhumi

Wed 9/30

9:35 am-2:25 pm

1 stop18h 50m

$981

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 10/12

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Wed 11/4

7:10 am-2:18 pm

2 stops22h 08m

$985

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 9/28

4:30 pm-9:35 am

2 stops27h 05m

Bangkok Suvarnabhumi

Mon 10/26

7:10 am-2:18 pm

2 stops21h 08m

$990

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 10/22

1:16 pm-9:35 am

3 stops30h 19m

Bangkok Suvarnabhumi

Mon 10/26

7:10 am-11:21 pm

2 stops30h 11m

$994

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 8/15

12:15 pm-9:35 am

2 stops31h 20m

Bangkok Suvarnabhumi

Thu 9/10

9:35 am-2:25 pm

1 stop18h 50m

$1,017

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 9/3

4:30 pm-9:35 am

2 stops27h 05m

Bangkok Suvarnabhumi

Sun 9/20

3:45 pm-11:44 am

3 stops33h 59m

$1,038

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 11/1

7:32 pm-11:25 am

2 stops48h 53m

Bangkok Suvarnabhumi

Fri 11/13

4:55 pm-10:21 am

3 stops32h 26m

$1,057

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Mon 8/10

4:25 pm-7:45 am

1 stop25h 20m

Phuket City

Mon 8/31

9:20 am-7:02 pm

2 stops47h 42m

$1,128

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/16

Showing 1-10 of 60 resultsSorted by cheapest first
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2
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6

Best time to book a flight from Seattle to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand 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 Thailand

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

Currently, April is the cheapest month in which you can book a flight from Seattle to Thailand (average of $140). Flying from Seattle to Thailand in December is currently the most expensive (average of $2,204). 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 far ahead should I book a flight from Seattle to Thailand?

The best time to book flights from Seattle to Thailand is 74 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Thailand

Get insights into the airlines that provide service to Thailand. 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 Thailand. Reviews last updated May 20, 2026.
Read through reviews of airlines operating flights from Seattle to Thailand, such as STARLUX Airlines,EVA Air, andChina Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Food

8.7

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

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Food

8.7

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

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Food

8.7

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

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Food

8.7

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

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Food

8.7

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

Comfort

8.9

Overall

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Food

8.7

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 Thailand. 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 Thailand?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Thailand from Seattle.

  • How long is the flight from Seattle to Thailand?

    For as low as $960, Philippine Airlines can have you in Thailand from Seattle in 23h. The distance between Seattle and Thailand is about 7443 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Seattle to Thailand 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.

  • What are the most popular routes from Seattle to Thailand?

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Thailand 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 Thailand?

    Currently, April is the cheapest month in which you can book a flight from Seattle to Thailand (average of $140). Flying from Seattle to Thailand in December is currently the most expensive (average of $2,204). 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 Thailand

Discover the top 10 airlines that operate flights from Seattle to Thailand. 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 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest$154Average$677FlexibilityNo cancel feeOn-time60%
Singapore AirlinesCheapest$510Average$695FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$626Average$807FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$652Average$789FlexibilityNo cancel feeOn-time81%
ANACheapest$680Average$853FlexibilityNo cancel feeOn-time80%
DeltaCheapest$694Average$952FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$697Average$925FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$705Average$880FlexibilityNo cancel feeOn-time72%
China AirlinesCheapest$729Average$830FlexibilityNo cancel feeOn-time70%
Qatar AirwaysCheapest$745Average$1,259FlexibilityNo cancel feeOn-time68%

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