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$271+ Cheap flights from Seattle (SEA) to Thailand

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Apr 7 — Apr 141
Tue 4/7
Tue 4/14
1 adult, Economy
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Cheap flight deals from Seattle to Thailand

Cheapest flights from Seattle to Thailand
Explore the most affordable flight options available from Seattle to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 8, 2026.

This oojo deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1810:15 am
SEA
-
HKT
1 stop32h 20m
Singapore Airlines
Thu 9/248:10 pm
HKT
-
SEA
1 stop26h 35m
Singapore Airlines
Deal found 3/4$497
This FlightHub deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:15 am
SEA
-
HKT
1 stop19h 00m
Singapore Airlines
Wed 9/2311:40 am
HKT
-
SEA
1 stop35h 05m
Singapore Airlines
Deal found 3/4$498
This FlightHub deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:15 am
SEA
-
HKT
1 stop37h 55m
Singapore Airlines
Mon 9/143:00 pm
HKT
-
SEA
1 stop31h 45m
Singapore Airlines
Deal found 3/5$521
This Justfly.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:15 am
SEA
-
HKT
1 stop34h 35m
Singapore Airlines
Sat 9/123:00 pm
HKT
-
SEA
1 stop31h 45m
Singapore Airlines
Deal found 3/5$546
This FlightHub deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:15 am
SEA
-
HKT
1 stop37h 00m
Singapore Airlines
Sat 10/3110:05 am
HKT
-
SEA
1 stop36h 05m
Singapore Airlines
Deal found 3/4$596
This oojo deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:15 am
SEA
-
HKT
1 stop37h 55m
Singapore Airlines
Sat 10/318:40 am
HKT
-
SEA
1 stop37h 30m
Singapore Airlines
Deal found 3/4$605
This Mytrip deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/112:10 am
SEA
-
BKK
1 stop30h 50m
Asiana Airlines
Mon 11/1611:55 pm
BKK
-
SEA
1 stop29h 00m
Asiana Airlines
Deal found 3/6$638
This oojo deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:15 am
SEA
-
BKK
1 stop21h 15m
Singapore Airlines
Sat 10/1712:15 pm
BKK
-
SEA
1 stop34h 30m
Singapore Airlines
Deal found 3/6$640
This oojo deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:15 am
SEA
-
BKK
1 stop19h 45m
Singapore Airlines
Tue 5/193:30 pm
BKK
-
SEA
2 stops31h 27m
Singapore Airlines
Deal found 3/8$643
This KAYAK deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:10 pm
SEA
-
BKK
1 stop19h 45m
Philippine Airlines
Wed 10/211:25 pm
BKK
-
SEA
1 stop20h 40m
Philippine Airlines
Deal found 3/4$644
This FlightHub deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:15 am
SEA
-
BKK
1 stop31h 50m
Singapore Airlines
Thu 10/226:30 pm
BKK
-
SEA
1 stop28h 15m
Singapore Airlines
Deal found 3/4$645
This FlightHub deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1610:15 am
SEA
-
HKT
1 stop32h 05m
Singapore Airlines
Fri 10/236:00 pm
HKT
-
SEA
1 stop28h 45m
Singapore Airlines
Deal found 3/5$645

Find flight deals from Seattle to Thailand

Keep the following information in mind while searching for Seattle to Thailand flight deals. Data was last updated March 8, 2026.

Round-trip from

$546
(Justfly.com)

One-way from

$271
(FlightHub)

Popular in

June

Cheapest in

September

Average price

$753
From Seattle/Tacoma Intl to Thailand
Search Deals
One-way flight from Seattle/Tacoma Intl to Thailand
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($143 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Thailand that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 8, 2026.
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 - BKK

SEABKK

Seattle/Tacoma Intl

Mon 8/31

7:20 am-11:35 pm

2 stops26h 15m

Bangkok Suvarnabhumi

Sun 9/6

9:40 pm-10:40 am

1 stop27h 00m

$787

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 7/29

1:20 pm-1:35 pm

1 stop34h 15m

Bangkok Suvarnabhumi

Wed 8/12

9:40 pm-9:51 pm

2 stops38h 11m

$793

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 8/25

7:20 am-11:35 pm

2 stops26h 15m

Bangkok Suvarnabhumi

Sun 11/1

12:55 am-3:25 pm

2 stops29h 30m

$799

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 7/28

12:55 am-11:20 pm

1 stop32h 25m

Bangkok Suvarnabhumi

Thu 8/13

11:45 am-3:25 pm

1 stop17h 40m

$861

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Sun 4/19

1:15 am-8:10 pm

2 stops28h 55m

Krabi

Mon 4/27

12:45 pm-7:15 pm

2 stops20h 30m

$873

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/1

6:51 pm-9:35 am

2 stops24h 44m

Bangkok Suvarnabhumi

Thu 9/10

7:00 am-9:11 pm

3 stops28h 11m

$889

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 9/2

1:19 pm-9:35 am

3 stops30h 16m

Bangkok Suvarnabhumi

Wed 9/16

9:35 am-9:56 pm

2 stops26h 21m

$890
Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/22

1:10 am-9:50 am

1 stop18h 40m

Bangkok Suvarnabhumi

Thu 4/2

1:20 pm-7:15 pm

1 stop19h 55m

$906

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 3/24

1:10 am-9:50 am

1 stop18h 40m

Bangkok Suvarnabhumi

Thu 4/2

1:20 pm-7:15 pm

1 stop19h 55m

$906

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Mon 4/27

5:59 pm-10:10 pm

2 stops38h 11m

Phuket City

Sun 5/3

11:25 pm-10:40 am

1 stop25h 15m

$906

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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, May is the cheapest month in which you can book a flight from Seattle to Thailand (average of $500). Flying from Seattle to Thailand in June is currently the most expensive (average of $723). 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.

What is the cheapest time of day to fly from SEA to TH?

Find hourly flight availability from Seattle to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 8, 2026.

One of the essential ways to save on airfare from Seattle to Thailand is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 33% on airfare.

What is the cheapest day to fly from Seattle to Thailand?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Thailand. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Seattle to Thailand flight should consider departing on Monday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Thailand

Get insights into the airlines that provide service to Thailand. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Thailand. Reviews last updated March 8, 2026.
Read through reviews of airlines operating flights from Seattle to Thailand, such as STARLUX Airlines, EVA Air, and China Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
8.9
Very good
279 reviews

Overall

8.9

Food

8.7

Entertainment

8.8

Boarding

8.9

Crew

9.2

Comfort

8.9

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
STARLUX Airlines
8.9
Very good
279 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Overall

8.9

Food

8.7

Entertainment

8.8

Boarding

8.9

Crew

9.2

Comfort

8.9

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
EVA Air
8.4
Very good
1,370 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Overall

8.9

Food

8.7

Entertainment

8.8

Boarding

8.9

Crew

9.2

Comfort

8.9

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
China Airlines
8.3
Very good
809 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Overall

8.9

Food

8.7

Entertainment

8.8

Boarding

8.9

Crew

9.2

Comfort

8.9

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Singapore Airlines
8.2
Very good
1,471 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Overall

8.9

Food

8.7

Entertainment

8.8

Boarding

8.9

Crew

9.2

Comfort

8.9

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Asiana Airlines
8.1
Very good
504 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Overall

8.9

Food

8.7

Entertainment

8.8

Boarding

8.9

Crew

9.2

Comfort

8.9

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Thailand. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 $887, Asiana Airlines can have you in Thailand from Seattle in 26h 35m. 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?

    $277 is the cheapest one-way deal found within the past few days, from Singapore Airlines. You may also be able to find cheap deals on Philippine Airlines and Asiana Airlines, with prices starting from $301 and $348, respectively.

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

    While some choose either Seattle/Tacoma Intl - Bangkok Don Mueang Intl or Seattle/Tacoma Intl - Phuket City, Seattle/Tacoma Intl - Bangkok Suvarnabhumi is the most popular route 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, May is the cheapest month in which you can book a flight from Seattle to Thailand (average of $500). Flying from Seattle to Thailand in June is currently the most expensive (average of $723). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from Seattle to Thailand

Discover the top 10 airlines that operate flights from Seattle to Thailand. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Philippine AirlinesCheapest$154Average$684FlexibilityNo cancel feeOn-time60%
Korean AirCheapest$418Average$829FlexibilityNo cancel feeOn-time81%
Singapore AirlinesCheapest$509Average$911FlexibilityNo cancel feeOn-time81%
DeltaCheapest$544Average$936FlexibilityNo cancel feeOn-timeN/A
Asiana AirlinesCheapest$627Average$811FlexibilityNo cancel feeOn-time76%
ANACheapest$681Average$862FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$697Average$922FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$704Average$798FlexibilityNo cancel feeOn-time72%
China AirlinesCheapest$719Average$817FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$740Average$852FlexibilityNo cancel feeOn-timeN/A

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