How long is the flight from Thailand to Seattle?

For as low as ฿26,420, ไห่หนานแอร์ไลน์ can have you in Seattle from Thailand in 20h 35m. The distance from Thailand to Seattle is about 11978 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

฿14,450 is the cheapest one-way deal found within the past few days, from STARLUX Airlines. You may also be able to find cheap deals on Korean Air and China Airlines, with prices starting from ฿15,660 and ฿15,872, respectively.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

What are the most popular routes from Thailand to Seattle?

The most popular flight routes from Thailand to Seattle are Bangkok Suvarnabhumi - Seattle/Tacoma Intl, Bangkok Don Mueang Intl - Seattle/Tacoma Intl and Chiang Mai - Seattle/Tacoma Intl.

What are the most popular airlines that fly from Thailand to Seattle?

When booking a flight from Thailand to Seattle, you may want to consider flying on EVA Air, Asiana Airlines or Philippine Airlines as they are the most popular for this route.

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

When flying from Thailand to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Thailand to Seattle. It is only a 18.4 km journey from Seattle/Tacoma Intl (SEA) to Seattle’s city centre.

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

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

How can I find direct flights from Thailand to Seattle?

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

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

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

฿15,993+ Cheap Flights from Thailand to Seattle

Cheap flight deals from Thailand to Seattle

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Thailand to Seattle
Explore the most affordable flight options available from Thailand to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2026.

Mon 2/1116:20 -

1 stop31h 00m

Sat 28/1110:20 -

1 stop37h 00m

Deal found 9/10฿25,548

Mon 12/1019:30 -

1 stop38h 35m

Wed 28/1022:30 -

1 stop34h 15m

Deal found 9/10฿26,152

Sat 10/1019:30 -

1 stop38h 35m

Sun 25/1022:30 -

1 stop30h 15m

Deal found 7/10฿26,320

Mon 12/1019:30 -

1 stop38h 35m

Sun 25/1022:30 -

1 stop23h 35m

Deal found 7/10฿26,420

Mon 2/1113:10 -

1 stop20h 35m

Sun 29/1121:30 -

1 stop23h 35m

Deal found 9/10฿26,487

Mon 2/1101:05 -

1 stop22h 15m

Sat 28/1110:20 -

1 stop37h 00m

Deal found 8/10฿26,655

Mon 2/1113:10 -

1 stop20h 35m

Fri 27/1121:30 -

1 stop20h 25m

Deal found 8/10฿26,756

Tue 3/1119:50 -

1 stop37h 55m

Fri 27/1121:30 -

1 stop30h 15m

Deal found 8/10฿26,823

Sun 1/1109:55 -

1 stop23h 50m

Thu 26/1121:30 -

1 stop20h 25m

Deal found 6/10฿26,890

Wed 4/1107:55 -

2 stops38h 12m

Mon 30/1112:00 -

1 stop20h 35m

Deal found 10/10฿26,990

Fri 16/1013:25 -

1 stop20h 40m

Tue 20/1023:10 -

1 stop23h 00m

Deal found 7/10฿27,091

Sun 20/1217:15 -

1 stop36h 50m

Thu 31/1223:45 -

1 stop25h 15m

Deal found 6/10฿28,901

Best flights from Thailand to Seattle
Discover carefully curated flight deals from Thailand to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.

Sat 27/202:35 -

1 stop30h 35m

Sat 3/401:15 -

1 stop18h 30m

Deal found 5/10฿27,158

Sun 1/1109:55 -

1 stop23h 50m

Fri 20/1121:30 -

1 stop30h 15m

Deal found 7/10฿27,594

Mon 2/1109:10 -

1 stop19h 10m

Wed 25/1116:39 -

2 stops45h 31m

Deal found 10/10฿28,365

Wed 4/1100:20 -

1 stop23h 45m

Sun 8/1100:10 -

1 stop31h 35m

Deal found 8/10฿30,242

Sun 22/1111:50 -

1 stop21h 20m

Sat 28/1100:10 -

2 stops27h 50m

Deal found 8/10฿31,684

Thu 17/1217:15 -

1 stop36h 50m

Sun 3/123:45 -

1 stop25h 15m

Deal found 6/10฿33,092

Sun 22/1119:45 -

2 stops28h 47m

Sun 29/1108:40 -

2 stops23h 55m

Deal found 8/10฿33,159

Tue 1/1214:05 -

1 stop19h 05m

Sun 27/1200:10 -

1 stop34h 25m

Deal found 8/10฿27,292

Tue 3/1119:50 -

1 stop37h 55m

Wed 25/1121:30 -

1 stop23h 35m

Deal found 6/10฿27,627

Wed 4/1107:10 -

2 stops22h 29m

Fri 27/1112:20 -

2 stops32h 10m

Deal found 6/10฿28,465

Fri 6/1109:10 -

2 stops25h 27m

Tue 24/1106:00 -

2 stops38h 30m

Deal found 7/10฿28,465

Thu 29/1009:10 -

2 stops26h 40m

Sun 29/1115:40 -

1 stop22h 30m

Deal found 6/10฿28,465

Thu 5/1109:30 -

2 stops23h 40m

Sun 8/1100:10 -

2 stops22h 35m

Deal found 7/10฿34,903

Sun 1/1107:10 -

1 stop21h 10m

Wed 25/1116:39 -

2 stops45h 31m

Deal found 6/10฿28,566

Fri 18/1219:45 -

2 stops37h 25m

Sat 2/100:10 -

1 stop19h 15m

Deal found 6/10฿39,060

Find flight deals from Thailand to Seattle

Round-trip from	฿25,548
One-way from	฿16,026
Popular in	August
Cheapest in	March
Average price	฿29,538

ไห่หนานแอร์ไลน์
2/11-28/11
2 total stops
68h 00m total
Thailand to Seattle

Search Deals

Singapore Airlines
15/10-31/12
1 total stop
25h 10m total
Thailand to Seattle

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (฿60,007 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (฿12,012 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Mon 9/11

18:05-18:33

3 stops39h 28m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿15,993

Fastest return journey

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Mon 22/3

17:50-19:10

1 stop15h 20m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿16,094

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Sat 17/10

17:30-19:15

1 stop15h 45m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿16,094

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Sat 31/10

17:50-19:10

1 stop15h 20m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿16,094

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Thu 19/11

17:15-15:05

1 stop36h 50m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿17,301

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Thu 24/12

00:20-11:56

1 stop26h 36m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿17,770

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Mon 21/12

00:20-11:56

1 stop26h 36m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿17,770

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Thu 15/10

02:35-13:14

1 stop24h 39m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿17,770

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Mon 21/12

00:20-14:10

1 stop28h 50m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿17,803

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Fri 6/11

03:00-17:21

2 stops29h 21m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿19,379

Flights are sorted by cheapest return flights first.

Deals found on 9/10

Showing 1-10 of 32 resultsSorted by cheapest first

Best time to book a flight from Thailand to Seattle

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

BKK-SEA

CNX-SEA

CEI-SEA

Estimated return 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 Thailand to Seattle

TH0-SEA

BKK-SEA

CNX-SEA

CEI-SEA

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

Currently, March is the cheapest month in which you can book a flight from Thailand to Seattle (average of ฿24,308). Flying from Thailand to Seattle in August is currently the most expensive (average of ฿33,562). 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 Thailand to Seattle?

The price you pay for your flight from Thailand to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 79 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Seattle

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

STARLUX Airlines

8.7

Very Good

Check prices

Reviews

1 / 15

8.0

Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

STARLUX Airlines

8.7

Very Good

STARLUX Airlines

8.7

Very Good

Check prices

Reviews

1 / 15

8.0

Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

EVA Air

8.5

Very Good

1,547 reviews

STARLUX Airlines

8.7

Very Good

Check prices

Reviews

1 / 15

8.0

Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

Asiana Airlines

8.1

Very Good

563 reviews

STARLUX Airlines

8.7

Very Good

Check prices

Reviews

1 / 15

8.0

Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

Philippine Airlines

7.3

Good

1,031 reviews

STARLUX Airlines

8.7

Very Good

Check prices

Reviews

1 / 15

8.0

Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

Related info for your journey

What airport do you fly into for flights to Seattle from Thailand?
Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Thailand to Seattle. It is only a 18.4 km journey from Seattle/Tacoma Intl (SEA) to Seattle’s city centre.
How long is the flight from Thailand to Seattle?
For as low as ฿26,420, ไห่หนานแอร์ไลน์ can have you in Seattle from Thailand in 20h 35m. The distance from Thailand to Seattle is about 11978 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines to fly from Thailand to Seattle one-way?
฿14,450 is the cheapest one-way deal found within the past few days, from STARLUX Airlines. You may also be able to find cheap deals on Korean Air and China Airlines, with prices starting from ฿15,660 and ฿15,872, respectively.
What are the most popular routes from Thailand to Seattle?
The most popular flight routes from Thailand to Seattle are Bangkok Suvarnabhumi - Seattle/Tacoma Intl, Bangkok Don Mueang Intl - Seattle/Tacoma Intl and Chiang Mai - Seattle/Tacoma Intl.
Can I find deals for flights from Thailand to Seattle that include hotel bookings?
Yes. In addition to deals on Thailand to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Thailand to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Thailand to Seattle.
Can I find deals for business class flights from Thailand to Seattle?
Yes. Cheapflights offers flight deals from Thailand to Seattle 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 Thailand to Seattle?
Currently, March is the cheapest month in which you can book a flight from Thailand to Seattle (average of ฿24,308). Flying from Thailand to Seattle in August is currently the most expensive (average of ฿33,562). 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

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Popular flights

Alternative routes for Thailand to Seattle

Chiang Mai to Seattle flights

Chiang Mai to Portland flights

Top 4 airlines flying from Thailand to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Philippine Airlines	Cheapest฿21,527	Average฿23,085	FlexibilityNo cancel fee	On-time60%	Search Philippine Airlines flights
Asiana Airlines	Cheapest฿22,478	Average฿24,435	FlexibilityNo cancel fee	On-time76%	Search Asiana Airlines flights
STARLUX Airlines	Cheapest฿24,101	Average฿30,191	FlexibilityNo cancel fee	On-timeN/A	Search STARLUX Airlines flights
EVA Air	Cheapest฿26,664	Average฿30,686	FlexibilityNo cancel fee	On-time74%	Search EVA Air flights

Fly with Cheapflights

How does Cheapflights help users find flights from Thailand to Seattle?

Cheapflights makes it easy to find Thailand to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Thailand to Seattle?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Thailand.

Can Cheapflights find flights from Thailand to Seattle with no change fees?

Certainly. Search results for flights to Seattle from Thailand shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Thailand to Seattle become cheaper?

Yes! Start tracking prices for Thailand to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from Thailand to Seattle from ฿15,993

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Thailand to Seattle

Cheapest flights from Thailand to SeattleExplore the most affordable flight options available from Thailand to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2026.

Explore the most affordable flight options available from Thailand to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2026.

Best flights from Thailand to SeattleDiscover carefully curated flight deals from Thailand to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.

Discover carefully curated flight deals from Thailand to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.

Last-minute flights from Thailand to SeattleDiscover last-minute flight deals from Thailand to Seattle. Data last updated 10 October 2026 and is based on user searches.

Discover last-minute flight deals from Thailand to Seattle. Data last updated 10 October 2026 and is based on user searches.

One-way flights from Thailand to SeattleSearch for one-way flight options from Thailand to Seattle. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.

Search for one-way flight options from Thailand to Seattle. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.

Find flight deals from Thailand to Seattle

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Best time to book a flight from Thailand to Seattle

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

Cheapflights Insights

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

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

The price you pay for your flight from Thailand to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 79 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Seattle

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

Related info for your journey

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

How long is the flight from Thailand to Seattle?

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

What are the most popular routes from Thailand to Seattle?

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

How can I find direct flights from Thailand to Seattle?

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

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

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.

Alternative routes for Thailand to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Thailand to Seattle by cabin class

Find flights from Thailand to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Thailand and Seattle flights

Browse other Thailand and Seattle flight options. Last updated on 10 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 4 airlines flying from Thailand to Seattle

Fly with Cheapflights

How does Cheapflights help users find flights from Thailand to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Thailand to Seattle?

Can Cheapflights find flights from Thailand to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Thailand to Seattle become cheaper?

100% Free

Book With Flexibility

Travel Smart

Cheapest flights from Thailand to Seattle
Explore the most affordable flight options available from Thailand to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2026.

Best flights from Thailand to Seattle
Discover carefully curated flight deals from Thailand to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.

Last-minute flights from Thailand to Seattle
Discover last-minute flight deals from Thailand to Seattle. Data last updated 10 October 2026 and is based on user searches.

One-way flights from Thailand to Seattle
Search for one-way flight options from Thailand to Seattle. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.