Thailand

$416+ Cheap flights from Seattle (SEA) to Thailand

SEA — BKK
Dec 4 — Dec 111
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Thailand with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Thailand

Cheapest flights from Seattle to Thailand

Sun 11/88:40 am -
1 stop43h 05m
Sun 11/229:15 pm -
1 stop48h 50m
Deal found 11/2$767
Sun 11/88:40 am -
1 stop43h 05m
Mon 11/239:40 am -
1 stop36h 25m
Deal found 11/2$768
Sun 11/299:30 pm -
1 stop34h 15m
Sun 12/69:55 am -
1 stop23h 50m
Deal found 10/30$772
Sun 11/158:40 am -
1 stop43h 05m
Fri 12/1112:00 pm -
1 stop34h 05m
Deal found 11/1$774
Wed 11/49:30 pm -
1 stop34h 15m
Wed 11/259:55 am -
1 stop23h 50m
Deal found 11/2$777
Thu 11/59:30 pm -
1 stop34h 15m
Thu 11/121:10 pm -
1 stop20h 35m
Deal found 11/4$782
Tue 12/110:20 am -
1 stop22h 15m
Wed 12/237:30 pm -
2 stops27h 35m
Deal found 11/1$788
Thu 11/1210:05 am -
1 stop33h 35m
Wed 11/257:30 pm -
2 stops27h 35m
Deal found 11/1$790
Mon 11/29:30 pm -
1 stop34h 15m
Mon 11/231:10 pm -
1 stop20h 35m
Deal found 11/1$800
Tue 11/178:40 am -
1 stop43h 05m
Tue 11/249:40 am -
1 stop36h 25m
Deal found 10/31$802
Thu 11/59:30 pm -
1 stop23h 35m
Fri 11/209:55 am -
1 stop23h 50m
Deal found 11/2$807
Thu 11/510:05 am -
1 stop33h 35m
Fri 11/204:20 pm -
1 stop31h 00m
Deal found 11/1$812

Find flight deals from Seattle to Thailand

Round-trip from

$606
(oojo)

One-way from

$416
(oojo)

Popular in

December

Cheapest in

March

Average price

$875
From Seattle/Tacoma Intl to Thailand
One-way flight from Seattle/Tacoma Intl to Thailand
Highest demand for flights based on searches. 7% potential increase in price ($69 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Average for round-trip flights in November 2026

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Thailand that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Mon 2/8

12:50 pm-11:05 pm

1 stop19h 15m

Bangkok Suvarnabhumi

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$442

SeattlePhuket City

SEA Seattle/Tacoma Intl - HKT Phuket City

SEAHKT

Seattle/Tacoma Intl

Wed 11/25

10:25 am-5:45 pm

1 stop40h 20m

Phuket City

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$442

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Mon 3/1

3:32 pm-11:30 am

3 stops28h 58m

Bangkok Suvarnabhumi

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$448

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Mon 2/22

8:47 am-11:30 am

3 stops35h 43m

Bangkok Suvarnabhumi

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$448

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 3/24

5:00 am-11:30 am

3 stops40h 30m

Bangkok Suvarnabhumi

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$448

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Mon 3/22

6:29 am-5:10 am

2 stops32h 41m

Bangkok Suvarnabhumi

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$448

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Tue 1/26

7:00 am-5:10 am

2 stops31h 10m

Bangkok Suvarnabhumi

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$448

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Mon 1/4

12:04 pm-12:20 am

2 stops45h 16m

Bangkok Suvarnabhumi

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$449
Quickest round-trip

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Mon 2/1

12:50 pm-10:45 pm

1 stop18h 55m

Chiang Mai

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$467

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 2/3

12:10 am-9:30 pm

1 stop30h 20m

Bangkok Suvarnabhumi

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$469

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Seattle to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand from Seattle with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Seattle to Thailand

What is the cheapest month to book a flight from Seattle to Thailand?

Currently, March is the cheapest month in which you can book a flight from Seattle to Thailand (average of $755). Flying from Seattle to Thailand in December is currently the most expensive (average of $1,218). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How far ahead should I book a flight from Seattle to Thailand?

The best time to book flights from Seattle to Thailand is 74 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Thailand

Read through reviews of airlines operating flights from Seattle to Thailand, such as EVA Air,China Airlines, andANA. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2026

TPE - CNX

I appreciate the free WIFI and meals. The crew are friendly.

Boarding

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2026

TPE - CNX

I appreciate the free WIFI and meals. The crew are friendly.

Boarding

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2026

TPE - CNX

I appreciate the free WIFI and meals. The crew are friendly.
8.3
Very good

Boarding

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2026

TPE - CNX

I appreciate the free WIFI and meals. The crew are friendly.

Boarding

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2026

TPE - CNX

I appreciate the free WIFI and meals. The crew are friendly.

Boarding

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2026

TPE - CNX

I appreciate the free WIFI and meals. The crew are friendly.

Related info for your journey

  • What airport do you fly from for flights from Seattle to Thailand?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Thailand from Seattle.

  • How long is the flight from Seattle to Thailand?

    For as low as $869, Delta can have you in Thailand from Seattle in 19h 15m. The distance between Seattle and Thailand is about 7443 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Seattle to Thailand one-way?

    $176 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Singapore Airlines and Philippine Airlines, with prices starting from $275 and $315, respectively.

  • What are the most popular routes from Seattle to Thailand?

  • Can I find deals for flights from Seattle to Thailand that include hotel bookings?

    Yes. In addition to deals on Seattle to Thailand flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Thailand?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Thailand.

  • Can I find deals for business class flights from Seattle to Thailand?

    Yes. Cheapflights offers flight deals from Seattle to Thailand by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Thailand?

    Currently, March is the cheapest month in which you can book a flight from Seattle to Thailand (average of $755). Flying from Seattle to Thailand in December is currently the most expensive (average of $1,218). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Seattle to Thailand

AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest$149Average$701FlexibilityNo cancel feeOn-time60%
Hainan AirlinesCheapest$385Average$690FlexibilityNo cancel feeOn-time61%
Air CanadaCheapest$428Average$1,371FlexibilityNo cancel feeOn-time67%
DeltaCheapest$459Average$928FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$511Average$791FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$577Average$1,085FlexibilityNo cancel feeOn-time68%
Asiana AirlinesCheapest$630Average$803FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$655Average$890FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$702Average$921FlexibilityNo cancel feeOn-time69%
ANACheapest$702Average$903FlexibilityNo cancel feeOn-time80%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.