What airlines fly to Bangkok?

Asiana Airlines, EVA Air and Singapore Airlines are the top three most popular airlines that fly to Bangkok from State of Washington according to our data. Asiana Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 15 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Bangkok?

Flight times from State of Washington to Bangkok vary, but if you’re flying out of Seattle and flying into Bangkok Suvarnabhumi Airport (one of the most popular routes), then the duration is 19h 45m on average. Another popular route from State of Washington to Bangkok is flying from Spokane to Bangkok Suvarnabhumi Airport, which will take roughly 24h. Keep in mind that layovers or delays could extend your travel time.

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

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

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

Prices for flights from Washington to Bangkok are updated daily.

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

There are 15 operators available for flights from Washington to Bangkok as of April 2026.

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

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 Bangkok.

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

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

$338 Cheap Flights from Washington to Bangkok in 2026

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Find the cheapest flights from Washington to Bangkok

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:15 am - 8:00 pm

SEA

BKK

19h 45m

1 stop

8:00 pm - 7:10 am

BKK

SEA

26h 10m

1 stop

$648Singapore Airlines

Tue, Aug 25 - Mon, Nov 2

10:15 am - 8:00 pm

SEA

BKK

19h 45m

1 stop

9:35 am - 8:10 am

BKK

SEA

36h 35m

1 stop

$665Singapore Airlines

Thu, Oct 1 - Sat, Oct 31

10:15 am - 2:15 pm

SEA

BKK

38h 00m

1 stop

12:15 pm - 8:45 am

BKK

SEA

34h 30m

1 stop

$687Singapore Airlines

Tue, Aug 25 - Mon, Sep 14

12:50 pm - 11:35 pm

SEA

BKK

20h 45m

1 stop

9:50 am - 10:40 am

BKK

SEA

38h 50m

1 stop

$741Korean Air

Sun, Apr 26 - Tue, May 12

9:30 pm - 9:45 am

PDX

BKK

22h 15m

2 stops

10:50 am - 9:25 am

BKK

PDX

36h 35m

2 stops

$904China Airlines

Tue, Aug 18 - Sat, Aug 29

9:59 pm - 9:45 am

PDX

BKK

21h 46m

2 stops

5:30 pm - 10:44 pm

BKK

PDX

19h 14m

2 stops

$905Multiple Airlines

Mon, Oct 5 - Tue, Oct 20

5:35 pm - 12:10 pm

PDX

BKK

28h 35m

2 stops

10:50 am - 8:13 am

BKK

PDX

35h 23m

2 stops

$906Multiple Airlines

Tue, Sep 8 - Mon, Sep 21

7:00 am - 11:30 pm

PDX

BKK

26h 30m

2 stops

1:35 am - 1:50 pm

BKK

PDX

26h 15m

2 stops

$926EVA Air

Wed, May 6 - Tue, May 12

4:19 pm - 9:45 am

PSC

BKK

27h 26m

2 stops

5:30 pm - 12:14 am

BKK

PSC

20h 44m

2 stops

$994China Airlines

Mon, Apr 27 - Tue, May 19

6:00 am - 10:25 am

PSC

BKK

38h 25m

2 stops

1:35 am - 12:14 am

BKK

PSC

36h 39m

2 stops

$1,004EVA Air

Tue, Apr 21 - Mon, May 18

China Airlines flights from State of Washington to Bangkok

Our best China Airlines deals on State of Washington to Bangkok flight tickets

China Airlines

Apr 20

SEA1:15 amSeattle/Tacoma Intl

18h 30m

1 stop

BKK9:45 amBangkok Suvarnabhumi

Sep 8

BKK5:30 pmBangkok Suvarnabhumi

16h 15m

1 stop

SEA7:45 pmSeattle/Tacoma Intl

$835

China Airlines

Apr 26

SEA1:15 amSeattle/Tacoma Intl

18h 30m

1 stop

BKK9:45 amBangkok Suvarnabhumi

May 19

BKK5:30 pmBangkok Suvarnabhumi

15h 45m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$849

China Airlines

Apr 26

SEA1:15 amSeattle/Tacoma Intl

18h 30m

1 stop

BKK9:45 amBangkok Suvarnabhumi

May 19

BKK5:30 pmBangkok Suvarnabhumi

15h 45m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$857

EVA Air flights from State of Washington to Bangkok

Our best EVA Air deals on State of Washington to Bangkok flight tickets

EVA Air

Apr 28

SEA12:30 amSeattle/Tacoma Intl

20h 25m

1 stop

BKK10:55 amBangkok Suvarnabhumi

May 18

BKK4:45 pmBangkok Suvarnabhumi

33h 45m

2 stops

SEA12:30 pmSeattle/Tacoma Intl

$874

EVA Air

Apr 21

SEA1:30 amSeattle/Tacoma Intl

19h 40m

1 stop

BKK11:10 amBangkok Suvarnabhumi

Sep 8

BKK4:45 pmBangkok Suvarnabhumi

16h 15m

1 stop

SEA7:00 pmSeattle/Tacoma Intl

$885

EVA Air

Apr 15

SEA1:30 amSeattle/Tacoma Intl

19h 25m

1 stop

BKK10:55 amBangkok Suvarnabhumi

May 10

BKK12:25 pmBangkok Suvarnabhumi

21h 05m

1 stop

SEA7:30 pmSeattle/Tacoma Intl

$905

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 8/25

10:15 am-8:00 pm

1 stop19h 45m

Bangkok Suvarnabhumi

Mon 11/2

8:00 pm-7:10 am

1 stop26h 10m

$648

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 10/1

10:15 am-8:00 pm

1 stop19h 45m

Bangkok Suvarnabhumi

Sat 10/31

9:35 am-8:10 am

1 stop36h 35m

$665

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 8/25

10:15 am-2:15 pm

1 stop38h 00m

Bangkok Suvarnabhumi

Mon 9/14

12:15 pm-8:45 am

1 stop34h 30m

$687

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/26

12:50 pm-11:35 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Tue 5/12

9:50 am-10:40 am

1 stop38h 50m

$741

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 8/18

9:30 pm-9:45 am

2 stops22h 15m

Bangkok Suvarnabhumi

Sat 8/29

10:50 am-9:25 am

2 stops36h 35m

$904

Quickest round-trip

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 10/5

9:59 pm-9:45 am

2 stops21h 46m

Bangkok Suvarnabhumi

Tue 10/20

5:30 pm-10:44 pm

2 stops19h 14m

$905

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 9/8

5:35 pm-12:10 pm

2 stops28h 35m

Bangkok Suvarnabhumi

Mon 9/21

10:50 am-8:13 am

2 stops35h 23m

$906

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 5/6

7:00 am-11:30 pm

2 stops26h 30m

Bangkok Suvarnabhumi

Tue 5/12

1:35 am-1:50 pm

2 stops26h 15m

$926

PascoBangkok

PSC - BKK

PSCBKK

Pasco Tri Cities

Mon 4/27

4:19 pm-9:45 am

2 stops27h 26m

Bangkok Suvarnabhumi

Tue 5/19

5:30 pm-12:14 am

2 stops20h 44m

$994

PascoBangkok

PSC - BKK

PSCBKK

Pasco Tri Cities

Tue 4/21

6:00 am-10:25 am

2 stops38h 25m

Bangkok Suvarnabhumi

Mon 5/18

1:35 am-12:14 am

2 stops36h 39m

$1,004

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 Bangkok

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 Bangkok?

If you aren’t able to travel during the month of September, then book flights to Bangkok from State of Washington during March instead. Flights to Bangkok in March, while not as cheap as those in September, still average around $742.

How far in advance should I book a flight to Bangkok?

You are more likely to see cheaper flights to Bangkok from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $864 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from State of Washington for as low as $732 on momondo.

Cheap State of Washington to Bangkok flight deals and tips

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

Fastest flight time	19h 45m
Direct flights	None

The fastest flight from State of Washington to Bangkok takes 19h 45m

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

Search flight deals

Frequently asked questions about flying from Washington to Bangkok

When did momondo last update prices for flights from Washington to Bangkok?
Prices for flights from Washington to Bangkok are updated daily.
How many operators does momondo search for flights from Washington to Bangkok?
There are 15 operators available for flights from Washington to Bangkok as of April 2026.
How old do you have to be to fly from Washington to Bangkok?
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 Bangkok.
What documentation or ID do you need to fly to Bangkok?
The travel and health documents required for your trip to Bangkok 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 Bangkok. 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 Bangkok

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

Airline	Rating	Free Cancellation	Price
Philippine Airlines	PriceFrom $149	Free Cancellation	Rating 7.3 985 reviews	Search Philippine Airlines flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,491 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 10,915 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $627	Free Cancellation	Rating 8.1 515 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $656	Free Cancellation	Rating 8.4 1,203 reviews	Search Korean Air flights
ANA	PriceFrom $680	Free Cancellation	Rating 8.4 1,171 reviews	Search ANA flights
Delta	PriceFrom $694	Free Cancellation	Rating 7.9 8,402 reviews	Search Delta flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 9,562 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $704	Free Cancellation	Rating 7.6 1,268 reviews	Search Cathay Pacific flights
China Airlines	PriceFrom $712	Free Cancellation	Rating 8.3 816 reviews	Search China Airlines flights

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for Washington to Bangkok flights to just show those with flexible booking policies.

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

Once all potential Washington to Bangkok flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Washington to Bangkok flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Washington to Bangkok from $338

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Bangkok departing on 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

What is the cheapest month to fly to Bangkok?

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

What airlines fly to Bangkok?

How long does it take to fly to Bangkok?

Cheap State of Washington to Bangkok flight deals and tips

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Frequently asked questions about flying from Washington to Bangkok

Best airlines flying from State of Washington to Bangkok

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

Why use momondo?

An easier way to manage your Bangkok trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Thailand

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Airports listed have a maximum distance of 15.4 mi from Bangkok

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