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

Singapore Airlines, Asiana Airlines, and ANA are the most popular carriers operating from Washington to Bangkok Suvarnabhumi

What airlines fly to Bangkok Suvarnabhumi Airport?

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

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 40m on average. On the other hand, flying from Spokane to Bangkok Suvarnabhumi Airport takes 25h 50m 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.

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 August 2025, there are 19 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.

$288 Cheap Flights from State of Washington to Bangkok Suvarnabhumi Airport in 2025

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Find the cheapest flights from Washington to Bangkok

Round-trip

One-way

Last minute

Cheap round-trip flights

8:45 am - 6:45 pmSEA-BKK

43h 00m1 stop

12:00 pm - 7:10 amBKK-SEA

34h 10m1 stop

$512Singapore Airlines

Find Deal

Sun, Jan 18 - Mon, Feb 2

8:45 am - 8:00 pmSEA-BKK

20h 15m1 stop

12:00 pm - 7:10 amBKK-SEA

34h 10m1 stop

$513Singapore Airlines

Find Deal

Tue, Feb 3 - Wed, Feb 11

12:10 am - 11:15 amSEA-BKK

21h 05m1 stop

12:20 pm - 1:55 pmBKK-SEA

16h 35m1 stop

$641Asiana Airlines

Find Deal

Sat, Nov 1 - Mon, Nov 17

12:10 am - 10:05 pmSEA-BKK

30h 55m1 stop

12:20 pm - 1:55 pmBKK-SEA

16h 35m1 stop

$642Asiana Airlines

Find Deal

Tue, Jan 13 - Wed, Jan 28

12:50 pm - 9:45 pmSEA-BKK

18h 55m1 stop

9:40 pm - 10:40 amBKK-SEA

27h 00m1 stop

$656Korean Air

Find Deal

Tue, Sep 9 - Tue, Sep 16

8:08 am - 11:00 pmSEA-BKK

24h 52m2 stops

8:05 am - 2:59 pmBKK-SEA

20h 54m2 stops

$672Japan Airlines

Find Deal

Thu, Sep 4 - Thu, Sep 11

4:30 pm - 4:35 amSEA-BKK

22h 05m1 stop

9:35 am - 6:36 pmBKK-SEA

23h 01m2 stops

$674ANA

Find Deal

Mon, Sep 1 - Wed, Sep 17

8:08 am - 11:00 pmSEA-BKK

24h 52m2 stops

8:05 am - 10:25 amBKK-SEA

16h 20m1 stop

$675Japan Airlines

Find Deal

Thu, Sep 4 - Thu, Sep 11

7:28 am - 11:25 pmSEA-BKK

25h 57m2 stops

2:35 am - 10:40 amBKK-SEA

22h 05m1 stop

$678Korean Air

Find Deal

Tue, Aug 26 - Wed, Sep 3

9:50 am - 6:30 amPDX-BKK

29h 40m2 stops

9:25 am - 6:30 pmBKK-PDX

24h 05m2 stops

$763ANA

Find Deal

Tue, Jan 13 - Wed, Feb 25

EVA Air flights from State of Washington to Bangkok Suvarnabhumi Airport

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

EVA Air

Oct 30

PSC8:21 amPasco Tri Cities

36h 24m

2 stops

BKK10:45 amBangkok Suvarnabhumi

Nov 14

BKK2:15 amBangkok Suvarnabhumi

33h 36m

2 stops

PSC8:51 pmPasco Tri Cities

$1,015

Find similar

EVA Air

Aug 13

PDX2:30 pmPortland

30h 40m

2 stops

BKK11:10 amBangkok Suvarnabhumi

Aug 17

BKK1:35 amBangkok Suvarnabhumi

26h 15m

2 stops

PDX1:50 pmPortland

$1,049

Find similar

EVA Air

Aug 13

PDX5:55 pmPortland

27h 25m

2 stops

BKK11:20 amBangkok Suvarnabhumi

Aug 17

BKK1:35 amBangkok Suvarnabhumi

25h 50m

2 stops

PDX1:25 pmPortland

$1,082

Find similar

Delta flights from State of Washington to Bangkok Suvarnabhumi Airport

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

Delta

Aug 18

SEA12:55 pmSeattle/Tacoma Intl

22h 10m

1 stop

BKK1:05 amBangkok Suvarnabhumi

Sep 2

BKK9:40 pmBangkok Suvarnabhumi

30h 00m

1 stop

SEA1:40 pmSeattle/Tacoma Intl

$694

Find similar

Delta

Aug 18

SEA12:55 pmSeattle/Tacoma Intl

22h 10m

1 stop

BKK1:05 amBangkok Suvarnabhumi

Aug 26

BKK2:35 amBangkok Suvarnabhumi

25h 26m

1 stop

SEA2:01 pmSeattle/Tacoma Intl

$695

Find similar

Delta

Aug 21

SEA12:55 pmSeattle/Tacoma Intl

20h 30m

1 stop

BKK11:25 pmBangkok Suvarnabhumi

Aug 28

BKK9:50 amBangkok Suvarnabhumi

18h 11m

1 stop

SEA2:01 pmSeattle/Tacoma Intl

$712

Find similar

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

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 1/18

8:45 am-6:45 pm

1 stop43h 00m

Bangkok Suvarnabhumi

Mon 2/2

12:00 pm-7:10 am

1 stop34h 10m

$512

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 2/3

8:45 am-8:00 pm

1 stop20h 15m

Bangkok Suvarnabhumi

Wed 2/11

12:00 pm-7:10 am

1 stop34h 10m

$513

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 11/1

12:10 am-11:15 am

1 stop21h 05m

Bangkok Suvarnabhumi

Mon 11/17

12:20 pm-1:55 pm

1 stop16h 35m

$641

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 1/13

12:10 am-10:05 pm

1 stop30h 55m

Bangkok Suvarnabhumi

Wed 1/28

12:20 pm-1:55 pm

1 stop16h 35m

$642

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/9

12:50 pm-9:45 pm

1 stop18h 55m

Bangkok Suvarnabhumi

Tue 9/16

9:40 pm-10:40 am

1 stop27h 00m

$656

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 9/4

8:08 am-11:00 pm

2 stops24h 52m

Bangkok Suvarnabhumi

Thu 9/11

8:05 am-2:59 pm

2 stops20h 54m

$672

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 9/1

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Wed 9/17

9:35 am-6:36 pm

2 stops23h 01m

$674

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 9/4

8:08 am-11:00 pm

2 stops24h 52m

Bangkok Suvarnabhumi

Thu 9/11

8:05 am-10:25 am

1 stop16h 20m

$675

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 8/26

7:28 am-11:25 pm

2 stops25h 57m

Bangkok Suvarnabhumi

Wed 9/3

2:35 am-10:40 am

1 stop22h 05m

$678

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 1/13

9:50 am-6:30 am

2 stops29h 40m

Bangkok Suvarnabhumi

Wed 2/25

9:25 am-6:30 pm

2 stops24h 05m

$763

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 February is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from State of Washington, with most prices found around $797. The month of March is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from State of Washington averaging around $822.

What is the cheapest day to depart on your flight to Bangkok Suvarnabhumi Airport?

The cheapest day to depart on your flight to Bangkok Suvarnabhumi Airport is on a Tuesday when prices can be found for as low as $931. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from State of Washington because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,111.

What is the cheapest time of day to depart on your flight to Bangkok Suvarnabhumi Airport?

Our most recent data shows that the best time of day to fly to Bangkok Suvarnabhumi Airport is in the morning. Flights from State of Washington to Bangkok Suvarnabhumi Airport during this time can be as low as $986. At noon is when there is more demand to fly to Bangkok Suvarnabhumi Airport, so prices are often more expensive at around $1,081 per ticket.

How far in advance should I book a flight 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 $934 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 $795 on momondo.

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

You could potentially save up to 34% 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

Best Price Found	$288
Fastest flight time	18h 40m
Direct flights	None

The best one-way flight to Bangkok Suvarnabhumi Airport from State of Washington in the past 72 hours is $288. The best round-trip flight deal from State of Washington to Bangkok Suvarnabhumi Airport found on momondo in the last 72 hours is $512.

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

There are no direct flights from State of Washington to Bangkok Suvarnabhumi Airport. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Bangkok Suvarnabhumi Airport.

Search flight deals

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 August 2025, there are 19 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
Delta	PriceFrom $433	Free Cancellation	Rating 8.0 7,985 reviews	Search Delta flights
Singapore Airlines	PriceFrom $544	Free Cancellation	Rating 8.1 1,344 reviews	Search Singapore Airlines flights
Asiana Airlines	PriceFrom $634	Free Cancellation	Rating 8.2 470 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $685	Free Cancellation	Rating 8.4 1,121 reviews	Search Korean Air flights
Philippine Airlines	PriceFrom $708	Free Cancellation	Rating 7.2 894 reviews	Search Philippine Airlines flights
ANA	PriceFrom $728	Free Cancellation	Rating 8.4 926 reviews	Search ANA flights
STARLUX Airlines	PriceFrom $740	Free Cancellation	Rating 9.0 201 reviews	Search STARLUX Airlines flights
China Eastern	PriceFrom $755	Free Cancellation	Rating 7.2 159 reviews	Search China Eastern flights
China Airlines	PriceFrom $755	Free Cancellation	Rating 8.3 760 reviews	Search China Airlines flights
Turkish Airlines	PriceFrom $773	Free Cancellation	Rating 7.3 3,934 reviews	Search Turkish Airlines flights

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Ayutthaya

Chonburi

Cha-am

Ko Lan

Sattahip

Pak Chong

Phetchaburi

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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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Cheap flights from Washington to Bangkok from $288

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 11/30. 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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Filter for what you want

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Find the cheapest flights from Washington to Bangkok

Cheap round-trip flights

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EVA Air flights from State of Washington to Bangkok Suvarnabhumi Airport

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

Delta flights from State of Washington to Bangkok Suvarnabhumi Airport

Our best Delta 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.

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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

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

What is the cheapest day to depart on your flight to Bangkok Suvarnabhumi Airport?

What is the cheapest time of day to depart on your flight to Bangkok Suvarnabhumi Airport?

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

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

You could potentially save up to 34% on your flight if you consider stops on a State of Washington to Bangkok Suvarnabhumi Airport flight.

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

Singapore Airlines, Asiana Airlines, and ANA are the most popular carriers operating 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

Best Price Found

Fastest flight time

Direct flights

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

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

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

What documentation or ID do you need to fly 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?

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

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

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

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

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.

Find better results for your trip to Bangkok

Popular cities in Thailand

Popular flights according to clicks in the last 7 days on momondo