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 17h 50m on average. On the other hand, flying from Spokane to Bangkok Suvarnabhumi Airport takes 24h 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 is the cheapest airline that flies from Washington to Bangkok Suvarnabhumi?

Delta, United Airlines, and STARLUX Airlines are the most popular carriers operating from Washington to Bangkok Suvarnabhumi

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 16 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 May 2026, there are 16 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.

$468 Cheap Flights from State of Washington to Bangkok Suvarnabhumi Airport in 2026

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Find the cheapest flights from Washington to Bangkok

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:07 pm - 12:20 pm

SEA

BKK

27h 13m

2 stops

3:30 pm - 8:45 am

BKK

SEA

31h 15m

1 stop

$866Singapore Airlines

Mon, Sep 7 - Wed, Sep 16

12:35 pm - 11:35 pm

SEA

BKK

21h 00m

1 stop

9:30 pm - 12:00 pm

BKK

SEA

29h 30m

1 stop

$867Delta

Thu, Oct 15 - Mon, Mar 1

5:35 pm - 11:00 am

PDX

BKK

27h 25m

2 stops

8:15 pm - 1:27 pm

BKK

PDX

31h 12m

2 stops

$934Multiple Airlines

Tue, Sep 22 - Wed, Oct 21

6:00 am - 8:00 pm

GEG

BKK

24h 00m

2 stops

9:10 pm - 12:30 pm

BKK

GEG

30h 20m

2 stops

$961Multiple Airlines

Tue, Oct 13 - Thu, Nov 12

6:30 am - 12:20 pm

GEG

BKK

38h 50m

2 stops

1:35 pm - 9:37 pm

BKK

GEG

47h 02m

2 stops

$996China Eastern

Sun, Nov 1 - Tue, Nov 17

6:30 am - 12:55 am

GEG

BKK

28h 25m

2 stops

1:55 am - 9:37 pm

BKK

GEG

34h 42m

2 stops

$1,049China Eastern

Thu, Oct 29 - Tue, Nov 17

7:00 am - 6:15 am

GEG

BKK

33h 15m

2 stops

2:00 am - 10:25 pm

BKK

GEG

35h 25m

2 stops

$1,196Qatar Airways

Thu, Oct 29 - Thu, Nov 19

6:00 am - 9:35 am

GEG

BKK

37h 35m

3 stops

9:35 am - 10:16 pm

BKK

GEG

50h 41m

2 stops

$1,232United Airlines

Mon, Sep 28 - Thu, Oct 1

1:35 pm - 9:35 am

PSC

BKK

30h 00m

3 stops

3:45 pm - 12:15 pm

BKK

PSC

34h 30m

3 stops

$1,243United Airlines

Sun, Sep 6 - Wed, Sep 23

7:00 am - 12:55 pm

PSC

BKK

39h 55m

2 stops

8:00 pm - 10:20 pm

BKK

PSC

40h 20m

2 stops

$1,286Qatar Airways

Thu, Sep 17 - Mon, Sep 21

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

Sep 28

GEG6:00 amSpokane

37h 35m

3 stops

BKK9:35 amBangkok Suvarnabhumi

Oct 1

BKK9:35 amBangkok Suvarnabhumi

50h 41m

2 stops

GEG10:16 pmSpokane

$1,232

United Airlines

Sep 2

GEG1:04 pmSpokane

30h 31m

3 stops

BKK9:35 amBangkok Suvarnabhumi

Sep 18

BKK7:00 amBangkok Suvarnabhumi

41h 35m

2 stops

GEG10:35 amSpokane

$1,242

United Airlines

May 12

PDX5:30 amPortland

33h 05m

3 stops

BKK4:35 amBangkok Suvarnabhumi

Jun 8

BKK9:35 amBangkok Suvarnabhumi

51h 14m

2 stops

PDX10:49 pmPortland

$1,476

Philippine Airlines flights from State of Washington to Bangkok Suvarnabhumi Airport

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

Philippine Airlines

Sep 20

SEA11:10 pmSeattle/Tacoma Intl

19h 45m

1 stop

BKK8:55 amBangkok Suvarnabhumi

Oct 7

BKK1:25 pmBangkok Suvarnabhumi

20h 40m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

$916

Philippine Airlines

Aug 26

SEA11:10 pmSeattle/Tacoma Intl

19h 45m

1 stop

BKK8:55 amBangkok Suvarnabhumi

Sep 30

BKK10:20 amBangkok Suvarnabhumi

23h 45m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

$917

Philippine Airlines

Oct 9

SEA11:10 pmSeattle/Tacoma Intl

23h 00m

1 stop

BKK12:10 pmBangkok Suvarnabhumi

Oct 13

BKK11:40 pmBangkok Suvarnabhumi

34h 25m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

$918

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

Mon 9/7

7:07 pm-12:20 pm

2 stops27h 13m

Bangkok Suvarnabhumi

Wed 9/16

3:30 pm-8:45 am

1 stop31h 15m

$866

Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 10/15

12:35 pm-11:35 pm

1 stop21h 00m

Bangkok Suvarnabhumi

Mon 3/1

9:30 pm-12:00 pm

1 stop29h 30m

$867

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 9/22

5:35 pm-11:00 am

2 stops27h 25m

Bangkok Suvarnabhumi

Wed 10/21

8:15 pm-1:27 pm

2 stops31h 12m

$934

SpokaneBangkok

GEG - BKK

GEGBKK

Spokane

Tue 10/13

6:00 am-8:00 pm

2 stops24h 00m

Bangkok Suvarnabhumi

Thu 11/12

9:10 pm-12:30 pm

2 stops30h 20m

$961

SpokaneBangkok

GEG - BKK

GEGBKK

Spokane

Sun 11/1

6:30 am-12:20 pm

2 stops38h 50m

Bangkok Suvarnabhumi

Tue 11/17

1:35 pm-9:37 pm

2 stops47h 02m

$996

SpokaneBangkok

GEG - BKK

GEGBKK

Spokane

Thu 10/29

6:30 am-12:55 am

2 stops28h 25m

Bangkok Suvarnabhumi

Tue 11/17

1:55 am-9:37 pm

2 stops34h 42m

$1,049

SpokaneBangkok

GEG - BKK

GEGBKK

Spokane

Thu 10/29

7:00 am-6:15 am

2 stops33h 15m

Bangkok Suvarnabhumi

Thu 11/19

2:00 am-10:25 pm

2 stops35h 25m

$1,196

SpokaneBangkok

GEG - BKK

GEGBKK

Spokane

Mon 9/28

6:00 am-9:35 am

3 stops37h 35m

Bangkok Suvarnabhumi

Thu 10/1

9:35 am-10:16 pm

2 stops50h 41m

$1,232

PascoBangkok

PSC - BKK

PSCBKK

Pasco Tri Cities

Sun 9/6

1:35 pm-9:35 am

3 stops30h 00m

Bangkok Suvarnabhumi

Wed 9/23

3:45 pm-12:15 pm

3 stops34h 30m

$1,243

PascoBangkok

PSC - BKK

PSCBKK

Pasco Tri Cities

Thu 9/17

7:00 am-12:55 pm

2 stops39h 55m

Bangkok Suvarnabhumi

Mon 9/21

8:00 pm-10:20 pm

2 stops40h 20m

$1,286

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 May is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from State of Washington averaging around $507.

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 $863 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 8% 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	17h 50m
Direct flights	None

The fastest flight from State of Washington to Bangkok Suvarnabhumi Airport takes 17h 50m

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 May 2026, there are 16 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 $154	Free Cancellation	Rating 7.3 995 reviews	Search Philippine Airlines flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,511 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 11,017 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $626	Free Cancellation	Rating 8.1 532 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 1,208 reviews	Search ANA flights
Delta	PriceFrom $694	Free Cancellation	Rating 7.9 8,450 reviews	Search Delta flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 9,700 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $705	Free Cancellation	Rating 7.6 1,329 reviews	Search Cathay Pacific flights
China Airlines	PriceFrom $728	Free Cancellation	Rating 8.3 826 reviews	Search China Airlines flights

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Kanchanaburi

Cha-am

Chonburi

Ayutthaya

Ko Lan

Pak Chong

Phetchaburi

Sattahip

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?

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 $880

Cheap flights from Washington to Bangkok from $407

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 9/8. 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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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

Philippine Airlines flights from State of Washington to Bangkok Suvarnabhumi Airport

Our best Philippine 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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Popular cities in Thailand

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

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List of cabin classes available on flights landing in Bangkok. Availability may vary depending on flight origin and airline.

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