What airlines fly to Thailand?

Singapore Airlines, Asiana Airlines and EVA Air are the top three most popular airlines that fly to Thailand from State of Washington according to our data. Singapore Airlines is the first choice among our users, with 29% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 17 different airlines that fly to Thailand on a routine basis, so you have a few additional options to choose from.

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

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

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

The flight from State of Washington to Thailand depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Seattle (a popular airport in State of Washington) to Bangkok Suvarnabhumi Airport (the most popular airport in Thailand), then the flight time is 20h 20m on average. If you fly from Spokane (another popular airport in State of Washington) to Bangkok Suvarnabhumi Airport, then the average flight time is 24h 57m.

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

Prices for flights from Washington to Thailand are updated daily.

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

There are 17 operators available for flights from Washington to Thailand as of September 2026.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Thailand.

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

The travel and health documents required for your trip to Thailand 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 Thailand. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$314 Cheap Flights from Washington to Thailand in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Thailand

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:40 am - 7:50 amSEA Seattle/Tacoma Intl-HKT Phuket City

32h 10m1 stop Singapore Changi

8:25 pm - 7:05 amHKT Phuket City-SEA Seattle/Tacoma Intl

25h 40m1 stop Singapore Changi

$677Singapore Airlines

Fri, Feb 12 - Mon, Feb 22

8:40 am - 7:50 amSEA Seattle/Tacoma Intl-HKT Phuket City

32h 10m1 stop Singapore Changi

8:25 pm - 7:05 amHKT Phuket City-SEA Seattle/Tacoma Intl

25h 40m1 stop Singapore Changi

$679Singapore Airlines

Fri, Feb 12 - Mon, Feb 22

11:00 am - 12:20 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

35h 20m1 stop Beijing Capital

1:05 am - 9:20 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

22h 15m1 stop Beijing Capital

$787Hainan Airlines

Tue, Oct 20 - Mon, Oct 26

11:00 am - 12:20 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

35h 20m1 stop Beijing Capital

4:20 pm - 9:20 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

31h 00m1 stop Beijing Capital

$787Hainan Airlines

Tue, Oct 20 - Fri, Oct 30

9:30 pm - 12:05 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

23h 35m1 stop Manila Ninoy Aquino Intl

1:10 pm - 6:45 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

20h 35m1 stop Manila Ninoy Aquino Intl

$791Philippine Airlines

Wed, Nov 18 - Wed, Dec 2

9:30 pm - 10:45 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

34h 15m1 stop Manila Ninoy Aquino Intl

11:40 pm - 6:45 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

34h 05m1 stop Manila Ninoy Aquino Intl

$795Philippine Airlines

Thu, Nov 26 - Wed, Feb 24

6:22 am - 12:55 amGEG Spokane-BKK Bangkok Suvarnabhumi

27h 33m2 stops Los Angeles Shanghai Pu Dong

5:05 am - 3:45 pmBKK Bangkok Suvarnabhumi-GEG Spokane

25h 40m2 stops Shanghai Pu Dong Los Angeles

$815China Eastern

Wed, Nov 4 - Wed, Nov 11

12:10 am - 1:25 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

22h 15m1 stop Incheon Intl

11:15 pm - 9:05 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

24h 50m1 stop Incheon Intl

$816Korean Air

Sun, Nov 1 - Mon, Nov 9

4:15 pm - 1:25 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

30h 10m2 stops Las Vegas Harry Reid Intl Incheon Intl

9:40 pm - 2:10 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

31h 30m1 stop Incheon Intl

$822Korean Air

Sat, Feb 13 - Sat, Feb 20

8:40 am - 7:35 pmSEA Seattle/Tacoma Intl-HKT Phuket City

19h 55m1 stop Singapore Changi

10:55 pm - 9:05 amHKT Phuket City-SEA Seattle/Tacoma Intl

25h 10m1 stop Incheon Intl

$858Multiple Airlines

Wed, Dec 2 - Mon, Dec 14

Cheap last minute flights

Enter your travel dates to find the best prices.

11:10 pm - 12:10 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

23h 00m1 stop Manila Ninoy Aquino Intl

11:40 pm - 8:05 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

34h 25m1 stop Manila Ninoy Aquino Intl

$787Philippine Airlines

Sun, Sep 27 - Sat, Oct 10

11:10 pm - 6:30 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

29h 20m1 stop Manila Ninoy Aquino Intl

11:40 pm - 8:05 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

34h 25m1 stop Manila Ninoy Aquino Intl

$792Philippine Airlines

Sun, Sep 27 - Sat, Oct 10

10:15 am - 2:15 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

38h 00m1 stop Singapore Changi

9:20 am - 8:25 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

37h 05m1 stop Singapore Changi

$811Singapore Airlines

Fri, Sep 25 - Wed, Oct 21

12:10 am - 11:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 25m1 stop Incheon Intl

1:35 am - 3:15 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

27h 40m1 stop Incheon Intl

$828Asiana Airlines

Sun, Sep 27 - Sun, Oct 4

12:10 am - 11:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 25m1 stop Incheon Intl

11:45 am - 3:15 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

17h 30m1 stop Incheon Intl

$828Asiana Airlines

Sun, Sep 27 - Tue, Oct 6

1:15 am - 1:25 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

34h 10m1 stop Taipei City Taiwan Taoyuan Intl

5:30 pm - 7:15 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

15h 45m1 stop Taipei City Taiwan Taoyuan Intl

$829China Airlines

Thu, Sep 24 - Mon, Oct 12

1:15 am - 12:10 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

20h 55m1 stop Taipei City Taiwan Taoyuan Intl

1:20 pm - 7:15 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

19h 55m1 stop Taipei City Taiwan Taoyuan Intl

$830China Airlines

Sun, Sep 27 - Sun, Oct 11

11:00 am - 12:20 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

35h 20m1 stop Beijing Capital

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

31h 00m1 stop Beijing Capital

$853Hainan Airlines

Sat, Sep 26 - Mon, Dec 21

11:00 am - 12:20 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

35h 20m1 stop Beijing Capital

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

33h 10m1 stop Beijing Capital

$897Hainan Airlines

Sat, Sep 26 - Fri, Oct 9

10:15 am - 9:55 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 40m1 stop Singapore Changi

9:20 am - 9:20 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

74h 00m2 stops Singapore Changi New York John F Kennedy Intl

$3,224Singapore Airlines

Sun, Sep 27 - Sat, Oct 17

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Hainan Airlines flights from State of Washington to Thailand

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

Hainan Airlines

Oct 20

SEA11:00 amSeattle/Tacoma Intl

35h 20m

1 stop

BKK12:20 pmBangkok Suvarnabhumi

Oct 26

BKK1:05 amBangkok Suvarnabhumi

22h 15m

1 stop

SEA9:20 amSeattle/Tacoma Intl

$787

Hainan Airlines

Nov 10

SEA10:20 amSeattle/Tacoma Intl

22h 05m

1 stop

BKK11:25 pmBangkok Suvarnabhumi

Nov 23

BKK1:05 amBangkok Suvarnabhumi

22h 15m

1 stop

SEA8:20 amSeattle/Tacoma Intl

$826

Hainan Airlines

Nov 12

SEA10:05 amSeattle/Tacoma Intl

33h 35m

1 stop

BKK10:40 amBangkok Suvarnabhumi

Nov 25

BKK11:10 amBangkok Suvarnabhumi

35h 55m

2 stops

SEA8:05 amSeattle/Tacoma Intl

$827

China Eastern flights from State of Washington to Thailand

Our best China Eastern deals on State of Washington to Thailand flight tickets

China Eastern

Nov 4

GEG6:22 amSpokane

27h 33m

2 stops

BKK12:55 amBangkok Suvarnabhumi

Nov 11

BKK5:05 amBangkok Suvarnabhumi

25h 40m

2 stops

GEG3:45 pmSpokane

$815

China Eastern

Nov 27

GEG7:00 amSpokane

40h 20m

2 stops

CNX2:20 pmChiang Mai

Dec 6

CNX3:35 pmChiang Mai

39h 12m

2 stops

GEG3:47 pmSpokane

$941

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePhuket City

SEA Seattle/Tacoma Intl - HKT Phuket City

SEAHKT

Seattle/Tacoma Intl

Fri 2/12

8:40 am-7:50 am

1 stop32h 10m

Phuket City

Mon 2/22

8:25 pm-7:05 am

1 stop25h 40m

$677

SeattlePhuket City

SEA Seattle/Tacoma Intl - HKT Phuket City

SEAHKT

Seattle/Tacoma Intl

Fri 2/12

8:40 am-7:50 am

1 stop32h 10m

Phuket City

Mon 2/22

8:25 pm-7:05 am

1 stop25h 40m

$679

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Tue 10/20

11:00 am-12:20 pm

1 stop35h 20m

Bangkok Suvarnabhumi

Mon 10/26

1:05 am-9:20 am

1 stop22h 15m

$787

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Tue 10/20

11:00 am-12:20 pm

1 stop35h 20m

Bangkok Suvarnabhumi

Fri 10/30

4:20 pm-9:20 am

1 stop31h 00m

$787

Quickest round-trip

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 11/18

9:30 pm-12:05 pm

1 stop23h 35m

Bangkok Suvarnabhumi

Wed 12/2

1:10 pm-6:45 pm

1 stop20h 35m

$791

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Thu 11/26

9:30 pm-10:45 pm

1 stop34h 15m

Bangkok Suvarnabhumi

Wed 2/24

11:40 pm-6:45 pm

1 stop34h 05m

$795

SpokaneBangkok

GEG Spokane - BKK Bangkok Suvarnabhumi

GEGBKK

Spokane

Wed 11/4

6:22 am-12:55 am

2 stops27h 33m

Bangkok Suvarnabhumi

Wed 11/11

5:05 am-3:45 pm

2 stops25h 40m

$815

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 11/1

12:10 am-1:25 pm

1 stop22h 15m

Bangkok Suvarnabhumi

Mon 11/9

11:15 pm-9:05 am

1 stop24h 50m

$816

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sat 2/13

4:15 pm-1:25 pm

2 stops30h 10m

Bangkok Suvarnabhumi

Sat 2/20

9:40 pm-2:10 pm

1 stop31h 30m

$822

SeattlePhuket City

SEA Seattle/Tacoma Intl - HKT Phuket City

SEAHKT

Seattle/Tacoma Intl

Wed 12/2

8:40 am-7:35 pm

1 stop19h 55m

Phuket City

Mon 12/14

10:55 pm-9:05 am

1 stop25h 10m

$858

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 State of Washington to Thailand

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 Thailand?

The month of March is, on average, the cheapest month to fly to Thailand from State of Washington, with most prices found around $753. If you are unable to visit Thailand during the month of March, then departing from State of Washington during the month February is also very affordable. Most momondo users find prices during this month for around $791.

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

You are more likely to see cheaper flights to Thailand from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Thailand for around $895 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Thailand from State of Washington for as low as $781 on momondo.

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

You could potentially save up to 28% on your flight if you consider stops on a State of Washington to Thailand flight.

Cheap State of Washington to Thailand flight deals and tips

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

Best Price Found	$314
Fastest flight time	19h 05m
Direct flights	None

The best one-way flight to Thailand from State of Washington in the past 72 hours is $314. The best round-trip flight deal from State of Washington to Thailand found on momondo in the last 72 hours is $677.

The fastest flight from State of Washington to Thailand takes 19h 05m

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

Search flight deals

Frequently asked questions about flying from Washington to Thailand

When did momondo last update prices for flights from Washington to Thailand?
Prices for flights from Washington to Thailand are updated daily.
How many operators does momondo search for flights from Washington to Thailand?
There are 17 operators available for flights from Washington to Thailand as of September 2026.
How old do you have to be to fly from Washington to Thailand?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Thailand.
What documentation or ID do you need to fly to Thailand?
The travel and health documents required for your trip to Thailand 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 Thailand. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from State of Washington to Thailand

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

Airline	Rating	Free Cancellation	Price
Philippine Airlines	PriceFrom $149	Free Cancellation	Rating 7.3 1,027 reviews	Search Philippine Airlines flights
Hainan Airlines	PriceFrom $385	Free Cancellation	Rating 8.3 71 reviews	Search Hainan Airlines flights
Air Canada	PriceFrom $428	Free Cancellation	Rating 7.1 11,667 reviews	Search Air Canada flights
Delta	PriceFrom $459	Free Cancellation	Rating 7.8 8,595 reviews	Search Delta flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,607 reviews	Search Singapore Airlines flights
Qatar Airways	PriceFrom $577	Free Cancellation	Rating 7.3 3,732 reviews	Search Qatar Airways flights
Asiana Airlines	PriceFrom $626	Free Cancellation	Rating 8.1 562 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $660	Free Cancellation	Rating 8.4 1,218 reviews	Search Korean Air flights
ANA	PriceFrom $701	Free Cancellation	Rating 8.3 1,319 reviews	Search ANA flights
United Airlines	PriceFrom $702	Free Cancellation	Rating 7.4 10,229 reviews	Search United Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Thailand. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Thailand from Washington with this policy.

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

momondo helps you find the best flight between Washington and Thailand by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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