How long is the flight from Thailand to State of Washington?

If you’re flying from a popular airport in Thailand, such as Bangkok or Chiang Mai, and flying into State of Washington, then you can expect flight times to average 15h 55m and 21h 20m, respectively.

What airlines fly to State of Washington?

EVA Air, Asiana Airlines and China Airlines are the top three most popular airlines that fly to State of Washington from Thailand according to our data. EVA Air is the first choice among our users, with 35% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 6 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Thailand to Washington?

China Airlines, Korean Air, and Delta are the most popular carriers operating from Thailand to Washington

When did momondo last update prices for flights from Thailand to Washington?

Prices for flights from Thailand to Washington refresh daily.

How many operators does momondo search for flights from Thailand to Washington?

The number of operators available for flights from Thailand to Washington is 6 as of October 2026.

How old do you have to be to fly from Thailand to Washington?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Thailand to Washington.

What documentation or ID do you need to fly to Washington?

The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$480 Cheap Flights from Thailand to Washington in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Thailand to Washington

Round-trip

One-way

Last minute

Recent round-trip flight deals from Thailand to Washington

Enter your travel dates to find the best prices.

12:45 am - 8:20 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

22h 35m1 stop Beijing Capital

10:20 am - 2:20 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

37h 00m1 stop Beijing Capital

$764Hainan Airlines

Fri, Nov 20 - Sat, Nov 28

4:20 pm - 8:20 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

31h 00m1 stop Beijing Capital

10:05 am - 10:40 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 35m1 stop Chongqing Jiangbei Intl

$783Hainan Airlines

Mon, Nov 9 - Thu, Nov 26

11:25 am - 7:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

21h 45m1 stop Taipei City Taiwan Taoyuan Intl

1:15 am - 10:20 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 05m1 stop Taipei City Taiwan Taoyuan Intl

$810China Airlines

Tue, Mar 23 - Tue, May 18

11:25 am - 7:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

21h 45m1 stop Taipei City Taiwan Taoyuan Intl

1:15 am - 10:20 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 05m1 stop Taipei City Taiwan Taoyuan Intl

$810China Airlines

Tue, Mar 23 - Sun, May 16

1:05 am - 11:51 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

25h 46m1 stop Incheon Intl

12:30 pm - 12:20 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

20h 50m1 stop Incheon Intl

$836Delta

Tue, Nov 24 - Fri, Nov 27

10:55 pm - 3:10 pmHKT Phuket City-SEA Seattle/Tacoma Intl

30h 15m1 stop Incheon Intl

12:10 am - 9:25 pmSEA Seattle/Tacoma Intl-HKT Phuket City

30h 15m1 stop Incheon Intl

$838Korean Air

Sat, Oct 31 - Mon, Nov 2

9:50 am - 12:51 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

17h 01m1 stop Incheon Intl

1:05 pm - 9:45 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

18h 40m1 stop Incheon Intl

$839Delta

Wed, Mar 24 - Wed, Apr 7

12:20 am - 9:05 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

23h 45m1 stop Incheon Intl

12:10 am - 10:45 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

31h 35m1 stop Incheon Intl

$842Korean Air

Wed, Nov 4 - Sun, Nov 8

1:45 pm - 3:05 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

16h 20m1 stop Taipei City Taiwan Taoyuan Intl

11:45 pm - 12:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

21h 50m1 stop Taipei City Taiwan Taoyuan Intl

$865STARLUX Airlines

Wed, Nov 25 - Sun, Nov 29

1:45 pm - 3:05 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

16h 20m1 stop Taipei City Taiwan Taoyuan Intl

11:45 pm - 4:30 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

25h 45m1 stop Taipei City Taiwan Taoyuan Intl

$868STARLUX Airlines

Mon, Nov 23 - Mon, Nov 23

Recent last minute flight deals from Thailand to Washington

Enter your travel dates to find the best prices.

1:50 pm - 9:00 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

33h 10m1 stop Beijing Capital

10:20 am - 11:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

22h 15m1 stop Beijing Capital

$796Hainan Airlines

Fri, Oct 23 - Tue, Nov 17

1:50 pm - 9:00 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

33h 10m1 stop Beijing Capital

10:20 am - 2:20 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

37h 00m1 stop Beijing Capital

$796Hainan Airlines

Fri, Oct 23 - Tue, Nov 10

2:35 am - 7:10 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

30h 35m1 stop Taipei City Taiwan Taoyuan Intl

12:10 am - 4:45 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

25h 35m1 stop Taipei City Taiwan Taoyuan Intl

$810China Airlines

Mon, Oct 26 - Mon, Nov 2

2:40 am - 7:15 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

30h 35m1 stop Taipei City Taiwan Taoyuan Intl

12:10 am - 9:50 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

18h 40m1 stop Taipei City Taiwan Taoyuan Intl

$810China Airlines

Fri, Oct 23 - Mon, Nov 9

5:40 pm - 4:05 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

36h 25m1 stop Taipei City Taiwan Taoyuan Intl

11:45 pm - 4:30 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

25h 45m1 stop Taipei City Taiwan Taoyuan Intl

$860STARLUX Airlines

Sun, Oct 25 - Thu, Nov 5

5:40 pm - 4:05 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

36h 25m1 stop Taipei City Taiwan Taoyuan Intl

11:45 pm - 12:55 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

22h 10m1 stop Taipei City Taiwan Taoyuan Intl

$862STARLUX Airlines

Sun, Oct 25 - Thu, Nov 5

4:45 pm - 7:20 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

16h 35m1 stop Taipei City Taiwan Taoyuan Intl

12:10 am - 11:30 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

20h 20m1 stop Taipei City Taiwan Taoyuan Intl

$888EVA Air

Fri, Oct 23 - Sat, Nov 7

2:35 pm - 7:10 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

18h 35m1 stop Taipei City Taiwan Taoyuan Intl

12:10 am - 11:30 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

20h 20m1 stop Taipei City Taiwan Taoyuan Intl

$943EVA Air

Mon, Oct 26 - Sat, Nov 7

11:15 pm - 12:51 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

27h 36m1 stop Incheon Intl

7:45 am - 1:25 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

38h 40m2 stops Los Angeles Incheon Intl

$944Delta

Sun, Oct 25 - Wed, Nov 4

9:40 pm - 10:05 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

26h 25m1 stop Incheon Intl

9:35 pm - 12:20 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

35h 45m2 stops San Francisco Incheon Intl

$944Delta

Mon, Oct 26 - Fri, Nov 6

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Philippine Airlines flights from Thailand to State of Washington

Our best Philippine Airlines deals on Thailand to State of Washington flight tickets

Philippine Airlines

Nov 22

BKK11:40 pmBangkok Suvarnabhumi

34h 05m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

Nov 27

SEA9:30 pmSeattle/Tacoma Intl

23h 35m

1 stop

BKK12:05 pmBangkok Suvarnabhumi

$791

Philippine Airlines

Nov 3

BKK7:50 pmBangkok Suvarnabhumi

37h 55m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

Nov 13

SEA9:30 pmSeattle/Tacoma Intl

23h 35m

1 stop

BKK12:05 pmBangkok Suvarnabhumi

$798

Philippine Airlines

Nov 2

BKK1:10 pmBangkok Suvarnabhumi

20h 35m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

Nov 30

SEA9:30 pmSeattle/Tacoma Intl

34h 15m

1 stop

BKK10:45 pmBangkok Suvarnabhumi

$801

Korean Air flights from Thailand to State of Washington

Our best Korean Air deals on Thailand to State of Washington flight tickets

Korean Air

Oct 26

BKK9:50 amBangkok Suvarnabhumi

38h 15m

1 stop

SEA10:05 amSeattle/Tacoma Intl

Nov 3

SEA11:00 amSeattle/Tacoma Intl

19h 30m

1 stop

BKK9:30 pmBangkok Suvarnabhumi

$809

Korean Air

Oct 25

BKK9:40 pmBangkok Suvarnabhumi

26h 25m

1 stop

SEA10:05 amSeattle/Tacoma Intl

Nov 3

SEA11:00 amSeattle/Tacoma Intl

19h 30m

1 stop

BKK9:30 pmBangkok Suvarnabhumi

$811

Korean Air

Oct 31

HKT10:55 pmPhuket City

30h 15m

1 stop

SEA3:10 pmSeattle/Tacoma Intl

Nov 2

SEA12:10 amSeattle/Tacoma Intl

30h 15m

1 stop

HKT9:25 pmPhuket City

$838

momondo Fare Finder

Use the filters below to find and compare flights from Thailand to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Fri 11/20

12:45 am-8:20 am

1 stop22h 35m

Seattle/Tacoma Intl

Sat 11/28

10:20 am-2:20 pm

1 stop37h 00m

$764

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Mon 11/9

4:20 pm-8:20 am

1 stop31h 00m

Seattle/Tacoma Intl

Thu 11/26

10:05 am-10:40 am

1 stop33h 35m

$783

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Tue 3/23

11:25 am-7:10 pm

1 stop21h 45m

Seattle/Tacoma Intl

Tue 5/18

1:15 am-10:20 am

1 stop19h 05m

$810

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Tue 3/23

11:25 am-7:10 pm

1 stop21h 45m

Seattle/Tacoma Intl

Sun 5/16

1:15 am-10:20 am

1 stop19h 05m

$810

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Tue 11/24

1:05 am-11:51 am

1 stop25h 46m

Seattle/Tacoma Intl

Fri 11/27

12:30 pm-12:20 am

1 stop20h 50m

$836

Phuket CitySeattle

HKT Phuket City - SEA Seattle/Tacoma Intl

HKTSEA

Phuket City

Sat 10/31

10:55 pm-3:10 pm

1 stop30h 15m

Seattle/Tacoma Intl

Mon 11/2

12:10 am-9:25 pm

1 stop30h 15m

$838

Quickest round-trip

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Wed 3/24

9:50 am-12:51 pm

1 stop17h 01m

Seattle/Tacoma Intl

Wed 4/7

1:05 pm-9:45 pm

1 stop18h 40m

$839

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Wed 11/4

12:20 am-9:05 am

1 stop23h 45m

Seattle/Tacoma Intl

Sun 11/8

12:10 am-10:45 pm

1 stop31h 35m

$842

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Wed 11/25

1:45 pm-3:05 pm

1 stop16h 20m

Seattle/Tacoma Intl

Sun 11/29

11:45 pm-12:35 pm

1 stop21h 50m

$865

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Mon 11/23

1:45 pm-3:05 pm

1 stop16h 20m

Seattle/Tacoma Intl

Mon 11/23

11:45 pm-4:30 pm

1 stop25h 45m

$868

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Thailand to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to State of Washington?

The month of March is, on average, the cheapest month to fly to State of Washington from Thailand, with most prices found around $725. If you aren’t able to travel to State of Washington during the month of March, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $810.

How far in advance should I book a flight from Thailand to Washington?

You are more likely to see cheaper flights to State of Washington from Thailand when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $882 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Thailand for as low as $727 on momondo.

Can stopping save me money on Thailand to State of Washington flights?

You could potentially save up to 2% on your flight if you consider stops on a Thailand to State of Washington flight.

Cheap Thailand to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Thailand to State of Washington

Best Price Found	$480
Fastest flight time	16h 01m
Direct flights	None

The best one-way flight to State of Washington from Thailand in the past 72 hours is $480. The best round-trip flight deal from Thailand to State of Washington found on momondo in the last 72 hours is $764.

The fastest flight from Thailand to State of Washington takes 16h 01m

There are no direct flights from Thailand to State of Washington. There are no popular flight routes from Thailand to State of Washington.

Search flight deals

Frequently asked questions about flying from Thailand to Washington

When did momondo last update prices for flights from Thailand to Washington?
Prices for flights from Thailand to Washington refresh daily.
How many operators does momondo search for flights from Thailand to Washington?
The number of operators available for flights from Thailand to Washington is 6 as of October 2026.
How old do you have to be to fly from Thailand to Washington?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Thailand to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Thailand to State of Washington

Compare and see reviews for airlines that fly from Thailand to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
Asiana Airlines	PriceFrom $655	Free Cancellation	Rating 8.1 567 reviews	Search Asiana Airlines flights
STARLUX Airlines	PriceFrom $714	Free Cancellation	Rating 8.7 400 reviews	Search STARLUX Airlines flights
EVA Air	PriceFrom $764	Free Cancellation	Rating 8.5 1,550 reviews	Search EVA Air flights
China Airlines	PriceFrom $774	Free Cancellation	Rating 8.3 853 reviews	Search China Airlines flights
Korean Air	PriceFrom $793	Free Cancellation	Rating 8.4 1,218 reviews	Search Korean Air flights
Delta	PriceFrom $803	Free Cancellation	Rating 7.8 8,654 reviews	Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Thailand to Washington?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington from Thailand.

Can I find flights from Thailand to Washington with flexible booking policies on momondo?

Flights from Thailand to Washington with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Thailand to Washington?

Once you have performed a search for Thailand to Washington flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Thailand to Washington right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Thailand to Washington now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington and let you know when they change.