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

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

How long does it take to fly to Bangkok Suvarnabhumi Airport?

Flight times vary depending on what airport in State of Washington you fly out of and what airport in Bangkok Suvarnabhumi Airport you fly into. For example, flying from Seattle to Bangkok Suvarnabhumi Airport takes 18h 45m on average. On the other hand, flying from Pasco to Bangkok Suvarnabhumi Airport takes 25h on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

What airlines fly to Bangkok Suvarnabhumi Airport?

Asiana Airlines, EVA Air and Singapore Airlines are the top three most popular airlines that fly to Bangkok Suvarnabhumi Airport 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 Suvarnabhumi Airport. Keep in mind that there are 18 different airlines that fly to Bangkok Suvarnabhumi Airport on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Washington to Bangkok Suvarnabhumi Airport are refreshed on a daily basis.

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

As of June 2026, there are 18 operators available to choose from for flights from Washington to Bangkok Suvarnabhumi Airport.

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

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 Washington to Bangkok Suvarnabhumi Airport.

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

The travel and health documents you'll need for your trip to Bangkok Suvarnabhumi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bangkok Suvarnabhumi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$434 Cheap Flights from State of Washington to Bangkok Suvarnabhumi Airport in 2026

Discover deals from 900+ travel sites with momondo.

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.

8:45 am - 5:00 pm

SEA

BKK

41h 15m

1 stop

9:35 am - 7:10 am

BKK

SEA

36h 35m

1 stop

$836Singapore Airlines

Wed, Nov 4 - Fri, Nov 13

10:15 am - 2:15 pm

SEA

BKK

38h 00m

1 stop

12:15 pm - 8:45 am

BKK

SEA

34h 30m

1 stop

$846Singapore Airlines

Thu, Aug 27 - Mon, Sep 7

8:45 am - 6:45 pm

SEA

BKK

43h 00m

1 stop

1:35 pm - 7:10 am

BKK

SEA

32h 35m

1 stop

$854Singapore Airlines

Fri, Nov 6 - Thu, Dec 10

6:10 pm - 12:35 pm

SEA

BKK

28h 25m

1 stop

1:35 am - 3:15 pm

BKK

SEA

27h 40m

1 stop

$859Multiple Airlines

Mon, Aug 24 - Wed, Sep 9

4:23 pm - 1:35 pm

SEA

BKK

31h 12m

2 stops

9:50 am - 8:45 am

BKK

SEA

36h 55m

2 stops

$860Korean Air

Sun, Aug 16 - Mon, Aug 31

10:30 am - 11:00 pm

SEA

BKK

22h 30m

2 stops

2:15 am - 5:30 pm

BKK

SEA

30h 15m

1 stop

$863Multiple Airlines

Thu, Sep 10 - Mon, Nov 9

1:15 pm - 10:15 am

SEA

BKK

31h 00m

2 stops

11:00 pm - 4:55 pm

BKK

SEA

31h 55m

1 stop

$864Multiple Airlines

Wed, Sep 30 - Mon, Oct 26

1:20 pm - 1:05 am

SEA

BKK

21h 45m

1 stop

9:50 am - 10:40 am

BKK

SEA

38h 50m

1 stop

$867Korean Air

Sun, Aug 16 - Mon, Aug 31

7:03 am - 5:45 am

PDX

BKK

32h 42m

2 stops

7:55 am - 4:50 pm

BKK

PDX

22h 55m

2 stops

$983Japan Airlines

Tue, Sep 1 - Tue, Sep 15

8:18 pm - 12:00 pm

PDX

BKK

25h 42m

2 stops

5:50 pm - 9:25 am

BKK

PDX

29h 35m

2 stops

$988STARLUX Airlines

Mon, Sep 21 - Fri, Sep 25

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Korean Air flights from State of Washington to Bangkok Suvarnabhumi Airport

Our best Korean Air deals on State of Washington to Bangkok Suvarnabhumi Airport flight tickets

Korean Air

Aug 16

SEA4:23 pmSeattle/Tacoma Intl

31h 12m

2 stops

BKK1:35 pmBangkok Suvarnabhumi

Aug 31

BKK9:50 amBangkok Suvarnabhumi

36h 55m

2 stops

SEA8:45 amSeattle/Tacoma Intl

$860

Korean Air

Aug 16

SEA1:20 pmSeattle/Tacoma Intl

21h 45m

1 stop

BKK1:05 amBangkok Suvarnabhumi

Aug 31

BKK9:50 amBangkok Suvarnabhumi

38h 50m

1 stop

SEA10:40 amSeattle/Tacoma Intl

$867

Korean Air

Nov 10

SEA11:00 amSeattle/Tacoma Intl

19h 30m

1 stop

BKK9:30 pmBangkok Suvarnabhumi

Dec 8

BKK11:15 pmBangkok Suvarnabhumi

24h 45m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$899

United Airlines flights from State of Washington to Bangkok Suvarnabhumi Airport

Our best United Airlines deals on State of Washington to Bangkok Suvarnabhumi Airport flight tickets

United Airlines

Nov 11

SEA3:40 pmSeattle/Tacoma Intl

22h 30m

1 stop

BKK5:10 amBangkok Suvarnabhumi

Dec 9

BKK9:10 amBangkok Suvarnabhumi

19h 10m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$902

United Airlines

Nov 11

SEA10:45 amSeattle/Tacoma Intl

33h 45m

3 stops

BKK11:30 amBangkok Suvarnabhumi

Dec 9

BKK9:10 amBangkok Suvarnabhumi

19h 10m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$911

United Airlines

Nov 12

SEA3:40 pmSeattle/Tacoma Intl

22h 30m

1 stop

BKK5:10 amBangkok Suvarnabhumi

Dec 9

BKK9:10 amBangkok Suvarnabhumi

24h 58m

2 stops

SEA7:08 pmSeattle/Tacoma Intl

$912

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 11/4

8:45 am-5:00 pm

1 stop41h 15m

Bangkok Suvarnabhumi

Fri 11/13

9:35 am-7:10 am

1 stop36h 35m

$836

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 8/27

10:15 am-2:15 pm

1 stop38h 00m

Bangkok Suvarnabhumi

Mon 9/7

12:15 pm-8:45 am

1 stop34h 30m

$846

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 11/6

8:45 am-6:45 pm

1 stop43h 00m

Bangkok Suvarnabhumi

Thu 12/10

1:35 pm-7:10 am

1 stop32h 35m

$854

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 8/24

6:10 pm-12:35 pm

1 stop28h 25m

Bangkok Suvarnabhumi

Wed 9/9

1:35 am-3:15 pm

1 stop27h 40m

$859

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 8/16

4:23 pm-1:35 pm

2 stops31h 12m

Bangkok Suvarnabhumi

Mon 8/31

9:50 am-8:45 am

2 stops36h 55m

$860

Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 9/10

10:30 am-11:00 pm

2 stops22h 30m

Bangkok Suvarnabhumi

Mon 11/9

2:15 am-5:30 pm

1 stop30h 15m

$863

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 9/30

1:15 pm-10:15 am

2 stops31h 00m

Bangkok Suvarnabhumi

Mon 10/26

11:00 pm-4:55 pm

1 stop31h 55m

$864

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 8/16

1:20 pm-1:05 am

1 stop21h 45m

Bangkok Suvarnabhumi

Mon 8/31

9:50 am-10:40 am

1 stop38h 50m

$867

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 9/1

7:03 am-5:45 am

2 stops32h 42m

Bangkok Suvarnabhumi

Tue 9/15

7:55 am-4:50 pm

2 stops22h 55m

$983

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 9/21

8:18 pm-12:00 pm

2 stops25h 42m

Bangkok Suvarnabhumi

Fri 9/25

5:50 pm-9:25 am

2 stops29h 35m

$988

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 Suvarnabhumi Airport

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 Suvarnabhumi Airport?

The month of April is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from State of Washington, with most prices found around $140. The month of July is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from State of Washington averaging around $425.

How far in advance should I book a flight from Washington to Bangkok Suvarnabhumi Airport?

You are more likely to see cheaper flights to Bangkok Suvarnabhumi Airport from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok Suvarnabhumi Airport for around $877 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok Suvarnabhumi Airport from State of Washington for as low as $730 on momondo.

Can stopping save me money on State of Washington to Bangkok Suvarnabhumi Airport flights?

You could potentially save up to 10% on your flight if you consider stops on a State of Washington to Bangkok Suvarnabhumi Airport flight.

Cheap State of Washington to Bangkok Suvarnabhumi Airport flight deals and tips

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

Fastest flight time	18h 45m
Direct flights	None

The fastest flight from State of Washington to Bangkok Suvarnabhumi Airport takes 18h 45m

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

Search flight deals

Frequently asked questions about flying from Washington to Bangkok Suvarnabhumi Airport

When did momondo last update prices for flights from Washington to Bangkok Suvarnabhumi Airport?
Prices for flights from Washington to Bangkok Suvarnabhumi Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Washington to Bangkok Suvarnabhumi Airport?
As of June 2026, there are 18 operators available to choose from for flights from Washington to Bangkok Suvarnabhumi Airport.
How old do you have to be to fly from Washington to Bangkok Suvarnabhumi Airport?
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 Washington to Bangkok Suvarnabhumi Airport.
What documentation or ID do you need to fly to Bangkok Suvarnabhumi Airport?
The travel and health documents you'll need for your trip to Bangkok Suvarnabhumi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bangkok Suvarnabhumi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Bangkok Suvarnabhumi Airport

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

Airline	Rating	Free Cancellation	Price
Philippine Airlines	PriceFrom $149	Free Cancellation	Rating 7.3 1,002 reviews	Search Philippine Airlines flights
Hainan Airlines	PriceFrom $385	Free Cancellation	Rating 8.3 66 reviews	Search Hainan Airlines flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,554 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 11,254 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $624	Free Cancellation	Rating 8.1 549 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $652	Free Cancellation	Rating 8.4 1,218 reviews	Search Korean Air flights
ANA	PriceFrom $680	Free Cancellation	Rating 8.3 1,252 reviews	Search ANA flights
Delta	PriceFrom $688	Free Cancellation	Rating 7.8 8,443 reviews	Search Delta flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 9,888 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $705	Free Cancellation	Rating 7.6 1,391 reviews	Search Cathay Pacific flights

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Phetchaburi

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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?

All flight searches from Washington to Bangkok on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Washington to Bangkok 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 Washington to Bangkok right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Bangkok, momondo offers a useful price alert feature which will track prices for flights to Bangkok from Washington and alert you when they change.

An easier way to manage your Bangkok Suvarnabhumi Airport trip

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Flights to Bangkok Don Mueang Intl Airportfrom $954

Cheap flights from Washington to Bangkok from $434

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 8/30. 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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Korean Air flights from State of Washington to Bangkok Suvarnabhumi Airport

Our best Korean Air deals on State of Washington to Bangkok Suvarnabhumi Airport flight tickets

United Airlines flights from State of Washington to Bangkok Suvarnabhumi Airport

Our best United Airlines deals on State of Washington to Bangkok Suvarnabhumi Airport flight tickets

momondo Fare Finder

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

See travel insights to Bangkok from

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

What is the cheapest month to fly to Bangkok Suvarnabhumi Airport?

How far in advance should I book a flight from Washington to Bangkok Suvarnabhumi Airport?

Can stopping save me money on State of Washington to Bangkok Suvarnabhumi Airport flights?

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

What airlines fly to Bangkok Suvarnabhumi Airport?

How long does it take to fly to Bangkok Suvarnabhumi Airport?

Cheap State of Washington to Bangkok Suvarnabhumi Airport flight deals and tips

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Washington to Bangkok Suvarnabhumi Airport

Best airlines flying from State of Washington to Bangkok Suvarnabhumi Airport

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

Traveling to a place near Bangkok?

Why use momondo?

An easier way to manage your Bangkok Suvarnabhumi Airport 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.

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