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 32% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 16 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 18h 40m 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?

Singapore Airlines, United Airlines, and American 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 16 operators available for flights from Washington to Bangkok as of May 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.

$426 Cheap Flights from Washington to Bangkok in 2026

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Round-trip

One-way

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Cheap round-trip flights

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6:06 am - 8:00 pm

PDX

BKK

23h 54m

2 stops

9:10 pm - 12:22 pm

BKK

PDX

30h 12m

2 stops

$879Multiple Airlines

Tue, Oct 27 - Tue, Dec 8

7:43 pm - 8:00 pm

GEG

BKK

34h 17m

2 stops

8:00 pm - 11:32 am

BKK

GEG

30h 32m

2 stops

$885Multiple Airlines

Mon, Oct 26 - Mon, Nov 2

5:38 pm - 11:00 am

PDX

BKK

27h 22m

2 stops

9:15 pm - 5:00 pm

BKK

PDX

33h 45m

2 stops

$933Singapore Airlines

Tue, Sep 22 - Wed, Oct 21

2:53 pm - 8:05 am

PDX

BKK

27h 12m

2 stops

3:30 pm - 10:50 am

BKK

PDX

33h 20m

2 stops

$949Singapore Airlines

Sun, Sep 6 - Sun, Sep 13

6:51 pm - 11:25 am

SEA

BKK

25h 34m

2 stops

7:10 am - 2:18 pm

BKK

SEA

22h 08m

2 stops

$989United Airlines

Tue, Nov 3 - Tue, Nov 24

1:55 am - 12:10 pm

SEA

BKK

20h 15m

1 stop

5:30 pm - 7:45 pm

BKK

SEA

16h 15m

1 stop

$1,002China Airlines

Sat, Aug 22 - Sun, Aug 30

6:51 pm - 11:25 am

SEA

BKK

25h 34m

2 stops

4:55 pm - 11:21 pm

BKK

SEA

21h 26m

2 stops

$1,006United Airlines

Mon, Nov 2 - Mon, Nov 23

4:30 pm - 4:35 am

SEA

BKK

22h 05m

1 stop

9:35 am - 2:25 pm

BKK

SEA

18h 50m

1 stop

$1,008ANA

Thu, Jul 30 - Wed, Aug 26

8:45 am - 10:15 pm

SEA

BKK

23h 30m

2 stops

9:35 am - 2:25 pm

BKK

SEA

18h 50m

1 stop

$1,011ANA

Thu, Jul 9 - Tue, Jul 28

5:36 pm - 12:10 pm

PUW

BKK

28h 34m

2 stops

10:50 am - 11:56 pm

BKK

PUW

27h 06m

2 stops

$2,217China Airlines

Thu, Oct 1 - Sat, Oct 17

China Airlines flights from State of Washington to Bangkok

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

China Airlines

Aug 22

SEA1:55 amSeattle/Tacoma Intl

20h 15m

1 stop

BKK12:10 pmBangkok Suvarnabhumi

Aug 30

BKK5:30 pmBangkok Suvarnabhumi

16h 15m

1 stop

SEA7:45 pmSeattle/Tacoma Intl

$1,002

China Airlines

Aug 22

SEA1:55 amSeattle/Tacoma Intl

17h 50m

1 stop

BKK9:45 amBangkok Suvarnabhumi

Aug 30

BKK5:30 pmBangkok Suvarnabhumi

16h 15m

1 stop

SEA7:45 pmSeattle/Tacoma Intl

$1,020

China Airlines

Aug 15

SEA1:55 amSeattle/Tacoma Intl

17h 50m

1 stop

BKK9:45 amBangkok Suvarnabhumi

Oct 12

BKK5:30 pmBangkok Suvarnabhumi

15h 45m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$1,047

Air Canada flights from State of Washington to Bangkok

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

Air Canada

Sep 14

PDX10:10 amPortland

28h 55m

1 stop

BKK5:05 amBangkok Suvarnabhumi

Sep 28

BKK7:05 amBangkok Suvarnabhumi

26h 01m

1 stop

PDX7:06 pmPortland

$1,154

Air Canada

Nov 1

PDX3:15 pmPortland

24h 15m

1 stop

BKK6:30 amBangkok Suvarnabhumi

Nov 23

BKK9:40 amBangkok Suvarnabhumi

26h 06m

2 stops

PDX8:46 pmPortland

$1,161

Air Canada

Sep 16

PDX7:45 pmPortland

19h 20m

1 stop

BKK5:05 amBangkok Suvarnabhumi

Sep 28

BKK7:05 amBangkok Suvarnabhumi

16h 26m

1 stop

PDX9:31 amPortland

$1,164

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 10/27

6:06 am-8:00 pm

2 stops23h 54m

Bangkok Suvarnabhumi

Tue 12/8

9:10 pm-12:22 pm

2 stops30h 12m

$879

SpokaneBangkok

GEG - BKK

GEGBKK

Spokane

Mon 10/26

7:43 pm-8:00 pm

2 stops34h 17m

Bangkok Suvarnabhumi

Mon 11/2

8:00 pm-11:32 am

2 stops30h 32m

$885

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 9/22

5:38 pm-11:00 am

2 stops27h 22m

Bangkok Suvarnabhumi

Wed 10/21

9:15 pm-5:00 pm

2 stops33h 45m

$933

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 9/6

2:53 pm-8:05 am

2 stops27h 12m

Bangkok Suvarnabhumi

Sun 9/13

3:30 pm-10:50 am

2 stops33h 20m

$949

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 11/3

6:51 pm-11:25 am

2 stops25h 34m

Bangkok Suvarnabhumi

Tue 11/24

7:10 am-2:18 pm

2 stops22h 08m

$989

Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 8/22

1:55 am-12:10 pm

1 stop20h 15m

Bangkok Suvarnabhumi

Sun 8/30

5:30 pm-7:45 pm

1 stop16h 15m

$1,002

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 11/2

6:51 pm-11:25 am

2 stops25h 34m

Bangkok Suvarnabhumi

Mon 11/23

4:55 pm-11:21 pm

2 stops21h 26m

$1,006

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 7/30

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Wed 8/26

9:35 am-2:25 pm

1 stop18h 50m

$1,008

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 7/9

8:45 am-10:15 pm

2 stops23h 30m

Bangkok Suvarnabhumi

Tue 7/28

9:35 am-2:25 pm

1 stop18h 50m

$1,011

PullmanBangkok

PUW - BKK

PUWBKK

Pullman Moscow Regional

Thu 10/1

5:36 pm-12:10 pm

2 stops28h 34m

Bangkok Suvarnabhumi

Sat 10/17

10:50 am-11:56 pm

2 stops27h 06m

$2,217

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 April, then book flights to Bangkok from State of Washington during May instead. Flights to Bangkok in May, while not as cheap as those in April, still average around $507.

How far in advance should I book a flight from Washington 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 $868 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 $730 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	18h 40m
Direct flights	None

The fastest flight from State of Washington to Bangkok takes 18h 40m

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

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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 16 operators available for flights from Washington to Bangkok as of May 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 7.3 997 reviews	Search Philippine Airlines flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,523 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 11,092 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $625	Free Cancellation	Rating 8.1 535 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $652	Free Cancellation	Rating 8.4 1,217 reviews	Search Korean Air flights
ANA	PriceFrom $680	Free Cancellation	Rating 8.3 1,215 reviews	Search ANA flights
Delta	PriceFrom $694	Free Cancellation	Rating 7.9 8,423 reviews	Search Delta flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 9,752 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $705	Free Cancellation	Rating 7.6 1,344 reviews	Search Cathay Pacific flights
China Airlines	PriceFrom $729	Free Cancellation	Rating 8.3 826 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 $426

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 9/19. 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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