What is the cheapest airline that flies from Seattle/Tacoma Intl to Bangkok?

Singapore Airlines and Hainan Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Bangkok

What airlines fly to Bangkok?

Asiana Airlines, EVA Air and Singapore Airlines are the top three most popular airlines that fly to Bangkok from Seattle 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 15 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Bangkok?

Prices for flights from Seattle/Tacoma Intl Airport to Bangkok were last updated today.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Bangkok?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Bangkok is 15 as of April 2026.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Bangkok?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Bangkok.

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

The required travel and health documents for your Bangkok trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bangkok. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$385 Cheap Flights from Seattle to Bangkok in 2026

Q: What is the typical price of a round-trip flight between Seattle and Bangkok?

Prices are currently low for flights on this route. Typical prices usually range from $1,006 to $733. The lowest price recently found on this route was $721.

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Find the cheapest flights from Seattle to Bangkok

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:15 am - 2:15 pm

SEA

BKK

38h 00m

1 stop

9:20 am - 8:45 am

BKK

SEA

37h 25m

1 stop

$721Singapore Airlines

Fri, Aug 21 - Wed, Sep 30

10:15 am - 8:00 pm

SEA

BKK

19h 45m

1 stop

1:35 pm - 8:45 am

BKK

SEA

33h 10m

1 stop

$730Singapore Airlines

Fri, Oct 2 - Thu, Oct 15

10:15 am - 5:15 pm

SEA

BKK

41h 00m

1 stop

12:15 pm - 8:45 am

BKK

SEA

34h 30m

1 stop

$741Singapore Airlines

Sat, Oct 3 - Mon, Oct 19

10:15 am - 2:15 pm

SEA

BKK

38h 00m

1 stop

6:30 pm - 8:45 am

BKK

SEA

28h 15m

1 stop

$759Singapore Airlines

Thu, Sep 3 - Thu, Sep 17

5:55 pm - 11:00 am

SEA

BKK

27h 05m

2 stops

6:10 pm - 7:10 am

BKK

SEA

28h 00m

1 stop

$760Singapore Airlines

Wed, Oct 14 - Wed, Nov 18

10:15 am - 5:15 pm

SEA

BKK

41h 00m

1 stop

3:50 pm - 7:10 am

BKK

SEA

30h 20m

1 stop

$783Singapore Airlines

Tue, Oct 6 - Wed, Nov 25

10:15 am - 5:15 pm

SEA

BKK

41h 00m

1 stop

9:35 am - 7:10 am

BKK

SEA

36h 35m

1 stop

$788Singapore Airlines

Tue, Aug 25 - Mon, Nov 2

10:15 am - 7:00 pm

SEA

BKK

42h 45m

1 stop

1:35 pm - 8:45 am

BKK

SEA

33h 10m

1 stop

$796Singapore Airlines

Thu, Sep 24 - Thu, Oct 1

4:20 pm - 8:05 am

SEA

BKK

25h 45m

2 stops

9:20 am - 8:10 am

BKK

SEA

36h 50m

1 stop

$808Multiple Airlines

Wed, Oct 14 - Sat, Oct 24

11:10 pm - 11:25 am

SEA

DMK

22h 15m

1 stop

1:40 pm - 7:15 pm

DMK

SEA

19h 35m

2 stops

$1,041Multiple Airlines

Sun, Sep 13 - Sun, Sep 20

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Singapore Airlines flights from Seattle to Bangkok

Our best Singapore Airlines deals on Seattle to Bangkok flight tickets

Singapore Airlines

Oct 17

SEA10:15 amSeattle/Tacoma Intl

41h 00m

1 stop

BKK5:15 pmBangkok Suvarnabhumi

Oct 24

BKK9:20 amBangkok Suvarnabhumi

36h 50m

1 stop

SEA8:10 amSeattle/Tacoma Intl

$709

Singapore Airlines

Aug 21

SEA10:15 amSeattle/Tacoma Intl

38h 00m

1 stop

BKK2:15 pmBangkok Suvarnabhumi

Sep 30

BKK9:20 amBangkok Suvarnabhumi

37h 25m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$721

Singapore Airlines

Oct 2

SEA10:15 amSeattle/Tacoma Intl

19h 45m

1 stop

BKK8:00 pmBangkok Suvarnabhumi

Oct 15

BKK1:35 pmBangkok Suvarnabhumi

33h 10m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$730

Hainan Airlines flights from Seattle to Bangkok

Our best Hainan Airlines deals on Seattle to Bangkok flight tickets

Hainan Airlines

Sep 15

SEA11:00 amSeattle/Tacoma Intl

22h 00m

1 stop

BKK11:00 pmBangkok Suvarnabhumi

Dec 21

BKK4:20 pmBangkok Suvarnabhumi

30h 40m

1 stop

SEA8:00 amSeattle/Tacoma Intl

$851

Hainan Airlines

Sep 19

SEA11:00 amSeattle/Tacoma Intl

35h 20m

1 stop

BKK12:20 pmBangkok Suvarnabhumi

Oct 19

BKK1:50 pmBangkok Suvarnabhumi

33h 10m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$860

Hainan Airlines

Oct 20

SEA11:00 amSeattle/Tacoma Intl

35h 20m

1 stop

BKK12:20 pmBangkok Suvarnabhumi

Nov 6

BKK4:20 pmBangkok Suvarnabhumi

30h 40m

1 stop

SEA8:00 amSeattle/Tacoma Intl

$910

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 8/21

10:15 am-2:15 pm

1 stop38h 00m

Bangkok Suvarnabhumi

Wed 9/30

9:20 am-8:45 am

1 stop37h 25m

$721

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 10/2

10:15 am-8:00 pm

1 stop19h 45m

Bangkok Suvarnabhumi

Thu 10/15

1:35 pm-8:45 am

1 stop33h 10m

$730

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 10/3

10:15 am-5:15 pm

1 stop41h 00m

Bangkok Suvarnabhumi

Mon 10/19

12:15 pm-8:45 am

1 stop34h 30m

$741

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 9/3

10:15 am-2:15 pm

1 stop38h 00m

Bangkok Suvarnabhumi

Thu 9/17

6:30 pm-8:45 am

1 stop28h 15m

$759

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 10/14

5:55 pm-11:00 am

2 stops27h 05m

Bangkok Suvarnabhumi

Wed 11/18

6:10 pm-7:10 am

1 stop28h 00m

$760

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 10/6

10:15 am-5:15 pm

1 stop41h 00m

Bangkok Suvarnabhumi

Wed 11/25

3:50 pm-7:10 am

1 stop30h 20m

$783

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 8/25

10:15 am-5:15 pm

1 stop41h 00m

Bangkok Suvarnabhumi

Mon 11/2

9:35 am-7:10 am

1 stop36h 35m

$788

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 9/24

10:15 am-7:00 pm

1 stop42h 45m

Bangkok Suvarnabhumi

Thu 10/1

1:35 pm-8:45 am

1 stop33h 10m

$796

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 10/14

4:20 pm-8:05 am

2 stops25h 45m

Bangkok Suvarnabhumi

Sat 10/24

9:20 am-8:10 am

1 stop36h 50m

$808

Quickest round-trip

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Sun 9/13

11:10 pm-11:25 am

1 stop22h 15m

Bangkok Don Mueang Intl

Sun 9/20

1:40 pm-7:15 pm

2 stops19h 35m

$1,041

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 Seattle 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

What is the typical price of a round-trip flight between Seattle and Bangkok?

What is the cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of September, then book flights to Bangkok from Seattle during October instead. Flights to Bangkok in October, while not as cheap as those in September, still average around $742.

How far in advance should I book a flight from Seattle to Bangkok?

You are more likely to see cheaper flights to Bangkok from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $869 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from Seattle for as low as $733 on momondo.

Cheap Seattle to Bangkok flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Bangkok

Fastest flight time	19h 45m
Direct flights	None

The fastest flight from Seattle to Bangkok takes 19h 45m

There are no direct flights from Seattle to Bangkok. There are no popular flight routes from Seattle to Bangkok.

Search flight deals

Frequently asked questions about flying from Seattle to Bangkok

How far is Seattle/Tacoma Intl to Bangkok by plane?
A flight from Seattle/Tacoma Intl to Bangkok will travel around 7436.9 mi. 19h 45m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Bangkok?
Prices for flights from Seattle/Tacoma Intl Airport to Bangkok were last updated today.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Bangkok?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Bangkok is 15 as of April 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Bangkok?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Bangkok.
What documentation or ID do you need to fly to Bangkok?
The required travel and health documents for your Bangkok trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bangkok. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Seattle to Bangkok

Compare and see reviews for airlines that fly from Seattle to Bangkok with momondo

Airline	Rating	Free Cancellation	Price
Philippine Airlines	PriceFrom $149	Free Cancellation	Rating 7.3 994 reviews	Search Philippine Airlines flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,502 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 10,960 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $626	Free Cancellation	Rating 8.0 519 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $654	Free Cancellation	Rating 8.4 1,212 reviews	Search Korean Air flights
ANA	PriceFrom $680	Free Cancellation	Rating 8.4 1,187 reviews	Search ANA flights
Delta	PriceFrom $694	Free Cancellation	Rating 7.9 8,448 reviews	Search Delta flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 9,644 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $705	Free Cancellation	Rating 7.6 1,295 reviews	Search Cathay Pacific flights
China Airlines	PriceFrom $712	Free Cancellation	Rating 8.3 818 reviews	Search China Airlines flights

Why use momondo?

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

It is quick and easy to find Seattle to Bangkok flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bangkok that suits you.

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

Flights from Seattle to Bangkok with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bangkok from Seattle.

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

Yes. momondo can track prices for Seattle to Bangkok flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Seattle to Bangkok from $385

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bangkok departing on 9/11. 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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Singapore Airlines flights from Seattle to Bangkok

Our best Singapore Airlines deals on Seattle to Bangkok flight tickets

Hainan Airlines flights from Seattle to Bangkok

Our best Hainan Airlines deals on Seattle to Bangkok flight tickets

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How to get the cheapest flight ticket from Seattle to Bangkok

What is the typical price of a round-trip flight between Seattle and Bangkok?

What is the cheapest month to fly to Bangkok?

How far in advance should I book a flight from Seattle to Bangkok?

What is the cheapest airline that flies from Seattle/Tacoma Intl to Bangkok?

What airlines fly to Bangkok?

Cheap Seattle to Bangkok flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Bangkok

Fastest flight time

Direct flights

Frequently asked questions about flying from Seattle to Bangkok

Best airlines flying from Seattle to Bangkok

Compare and see reviews for airlines that fly from Seattle 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

Fly into one of these airports located in Bangkok

Airports listed have a maximum distance of 15.4 mi from Bangkok

Fly your favorite airline to Bangkok

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