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

Philippine Airlines, Asiana Airlines, and Korean Air 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 20h 15m on average. On the other hand, flying from Spokane to Bangkok Suvarnabhumi Airport takes 23h 20m 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 October 2025, 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.

$338 Cheap Flights from State of Washington to Bangkok Suvarnabhumi Airport in 2025/26

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12:10 am - 10:00 pmSEA-BKK

30h 50m1 stop

11:55 pm - 2:55 pmBKK-SEA

29h 00m1 stop

$651Asiana Airlines

Find Deal

lun., ene. 5 - jue., may. 7

12:10 am - 10:00 pmSEA-BKK

31h 50m1 stop

11:55 pm - 1:55 pmBKK-SEA

29h 00m1 stop

$652Asiana Airlines

Find Deal

dom., oct. 26 - vie., nov. 21

9:30 pm - 11:00 pmSEA-BKK

34h 30m1 stop

11:50 pm - 6:40 pmBKK-SEA

33h 50m1 stop

$654Philippine Airlines

Find Deal

mié., nov. 19 - lun., dic. 8

9:30 pm - 11:00 pmSEA-BKK

34h 30m1 stop

11:50 pm - 6:40 pmBKK-SEA

33h 50m1 stop

$659Philippine Airlines

Find Deal

mié., nov. 19 - mié., nov. 26

9:45 am - 2:35 pmSEA-BKK

38h 50m1 stop

3:50 pm - 8:45 amBKK-SEA

30h 55m1 stop

$663Singapore Airlines

Find Deal

sáb., mar. 21 - sáb., mar. 28

8:45 am - 10:10 pmSEA-BKK

22h 25m1 stop

3:50 pm - 7:10 amBKK-SEA

30h 20m1 stop

$664Singapore Airlines

Find Deal

dom., nov. 9 - vie., nov. 21

7:10 am - 12:45 amSEA-BKK

26h 35m2 stops

12:55 am - 9:00 amBKK-SEA

23h 05m1 stop

$670Korean Air

Find Deal

dom., nov. 9 - sáb., nov. 22

11:00 am - 12:45 amSEA-BKK

22h 45m1 stop

2:05 am - 2:45 pmBKK-SEA

27h 40m2 stops

$688Korean Air

Find Deal

dom., ene. 18 - mié., feb. 11

11:25 am - 12:45 amSEA-BKK

22h 20m1 stop

9:40 am - 1:20 pmBKK-SEA

18h 40m1 stop

$693Delta

Find Deal

jue., ene. 15 - mar., feb. 10

11:25 am - 12:45 amSEA-BKK

22h 20m1 stop

12:55 am - 1:20 pmBKK-SEA

27h 25m1 stop

$694Delta

Find Deal

jue., ene. 15 - dom., feb. 8

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

Jan 15

SEA11:25 amSeattle/Tacoma Intl

22h 20m

1 stop

BKK12:45 amBangkok Suvarnabhumi

Feb 10

BKK9:40 amBangkok Suvarnabhumi

18h 40m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$693

Find similar

Delta

Jan 15

SEA11:25 amSeattle/Tacoma Intl

22h 20m

1 stop

BKK12:45 amBangkok Suvarnabhumi

Feb 8

BKK12:55 amBangkok Suvarnabhumi

27h 25m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$694

Find similar

Delta

Jan 20

SEA11:25 amSeattle/Tacoma Intl

22h 20m

1 stop

BKK12:45 amBangkok Suvarnabhumi

Feb 10

BKK12:55 amBangkok Suvarnabhumi

27h 25m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$695

Find similar

STARLUX Airlines flights from State of Washington to Bangkok Suvarnabhumi Airport

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

STARLUX Airlines

Jan 21

GEG7:49 pmSpokane

25h 46m

2 stops

BKK12:35 pmBangkok Suvarnabhumi

Feb 10

BKK1:45 pmBangkok Suvarnabhumi

20h 18m

2 stops

GEG7:03 pmSpokane

$763

Find similar

STARLUX Airlines

Nov 1

GEG8:59 pmSpokane

25h 36m

2 stops

BKK12:35 pmBangkok Suvarnabhumi

Nov 15

BKK1:45 pmBangkok Suvarnabhumi

20h 09m

2 stops

GEG6:54 pmSpokane

$787

Find similar

STARLUX Airlines

Nov 1

GEG7:39 pmSpokane

26h 56m

2 stops

BKK12:35 pmBangkok Suvarnabhumi

Nov 15

BKK1:45 pmBangkok Suvarnabhumi

20h 09m

2 stops

GEG6:54 pmSpokane

$801

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

lun. 1/5

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

jue. 5/7

11:55 pm-2:55 pm

1 stop29h 00m

$651

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

dom. 10/26

12:10 am-10:00 pm

1 stop31h 50m

Bangkok Suvarnabhumi

vie. 11/21

11:55 pm-1:55 pm

1 stop29h 00m

$652

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mié. 11/19

9:30 pm-11:00 pm

1 stop34h 30m

Bangkok Suvarnabhumi

lun. 12/8

11:50 pm-6:40 pm

1 stop33h 50m

$654

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mié. 11/19

9:30 pm-11:00 pm

1 stop34h 30m

Bangkok Suvarnabhumi

mié. 11/26

11:50 pm-6:40 pm

1 stop33h 50m

$659

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

sáb. 3/21

9:45 am-2:35 pm

1 stop38h 50m

Bangkok Suvarnabhumi

sáb. 3/28

3:50 pm-8:45 am

1 stop30h 55m

$663

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

dom. 11/9

8:45 am-10:10 pm

1 stop22h 25m

Bangkok Suvarnabhumi

vie. 11/21

3:50 pm-7:10 am

1 stop30h 20m

$664

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

dom. 11/9

7:10 am-12:45 am

2 stops26h 35m

Bangkok Suvarnabhumi

sáb. 11/22

12:55 am-9:00 am

1 stop23h 05m

$670

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

dom. 1/18

11:00 am-12:45 am

1 stop22h 45m

Bangkok Suvarnabhumi

mié. 2/11

2:05 am-2:45 pm

2 stops27h 40m

$688

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

jue. 1/15

11:25 am-12:45 am

1 stop22h 20m

Bangkok Suvarnabhumi

mar. 2/10

9:40 am-1:20 pm

1 stop18h 40m

$693

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

jue. 1/15

11:25 am-12:45 am

1 stop22h 20m

Bangkok Suvarnabhumi

dom. 2/8

12:55 am-1:20 pm

1 stop27h 25m

$694

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 September is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from State of Washington, with most prices found around $751. The month of February is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from State of Washington averaging around $763.

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 $899 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 $744 on momondo.

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

You could potentially save up to 35% 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

Direct flights	None

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

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 October 2025, 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
Delta	PriceFrom $433	Free Cancellation	Rating 7.9 7,966 reviews	Search Delta flights
Singapore Airlines	PriceFrom $523	Free Cancellation	Rating 8.1 1,374 reviews	Search Singapore Airlines flights
Philippine Airlines	PriceFrom $605	Free Cancellation	Rating 7.3 918 reviews	Search Philippine Airlines flights
Asiana Airlines	PriceFrom $624	Free Cancellation	Rating 8.2 486 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $671	Free Cancellation	Rating 8.4 1,147 reviews	Search Korean Air flights
ANA	PriceFrom $712	Free Cancellation	Rating 8.4 983 reviews	Search ANA flights
STARLUX Airlines	PriceFrom $740	Free Cancellation	Rating 8.9 216 reviews	Search STARLUX Airlines flights
China Airlines	PriceFrom $743	Free Cancellation	Rating 8.3 767 reviews	Search China Airlines flights
China Eastern	PriceFrom $755	Free Cancellation	Rating 7.2 168 reviews	Search China Eastern flights
Turkish Airlines	PriceFrom $773	Free Cancellation	Rating 7.3 3,992 reviews	Search Turkish Airlines flights

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Ayutthaya

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Ko Lan

Pak Chong

Sattahip

Phetchaburi

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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.

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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 11/27. 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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Delta flights from State of Washington to Bangkok Suvarnabhumi Airport

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

STARLUX Airlines flights from State of Washington to Bangkok Suvarnabhumi Airport

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

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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 35% 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?

Philippine Airlines, Asiana Airlines, and Korean Air 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

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