What is the cheapest airline that flies from Washington to Chiang Mai?

STARLUX Airlines, Cathay Pacific, and EVA Air are the most popular carriers operating from Washington to Chiang Mai

What airlines fly to Chiang Mai?

EVA Air, China Airlines and Korean Air are the top three most popular airlines that fly to Chiang Mai from State of Washington according to our data. EVA Air is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Chiang Mai. Keep in mind that there are 3 different airlines that fly to Chiang Mai 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 Chiang Mai Airport?

Prices for flights from Washington to Chiang Mai Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Washington to Chiang Mai Airport?

As of November 2026, there are 3 operators available to choose from for flights from Washington to Chiang Mai Airport.

How old do you have to be to fly from Washington to Chiang Mai 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 Chiang Mai Airport.

What documentation or ID do you need to fly to Chiang Mai Airport?

The necessary travel and health documents for your Chiang Mai Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$434 Cheap Flights from Washington to Chiang Mai in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Chiang Mai

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:15 am - 4:35 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

40h 20m1 stop Singapore Changi

5:20 pm - 8:45 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

29h 25m1 stop Singapore Changi

$849Singapore Airlines

Sat, May 1 - Wed, May 12

9:40 am - 3:40 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

40h 00m1 stop Singapore Changi

5:35 pm - 8:45 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

29h 10m1 stop Singapore Changi

$850Singapore Airlines

Fri, Mar 19 - Sat, Apr 3

9:40 am - 3:40 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

40h 00m1 stop Singapore Changi

5:35 pm - 8:45 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

29h 10m1 stop Singapore Changi

$851Singapore Airlines

Fri, Mar 19 - Sat, Apr 3

12:10 am - 10:45 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

31h 35m1 stop Incheon Intl

12:20 am - 3:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

28h 50m1 stop Incheon Intl

$922Korean Air

Sun, Feb 21 - Wed, Mar 17

7:15 am - 10:45 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

24h 30m2 stops San Francisco Incheon Intl

12:20 am - 9:05 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

23h 45m1 stop Incheon Intl

$927Korean Air

Mon, Jan 25 - Sun, Feb 7

7:20 am - 10:45 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

24h 25m2 stops San Francisco Incheon Intl

12:20 am - 3:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

28h 50m1 stop Incheon Intl

$928Korean Air

Mon, Feb 22 - Wed, Mar 17

11:50 pm - 10:35 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

20h 45m1 stop Taipei City Taiwan Taoyuan Intl

11:50 am - 7:20 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

21h 30m1 stop Taipei City Taiwan Taoyuan Intl

$999EVA Air

Thu, Mar 18 - Wed, Mar 24

11:50 pm - 10:25 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

20h 35m1 stop Taipei City Taiwan Taoyuan Intl

11:35 am - 7:30 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

21h 55m1 stop Taipei City Taiwan Taoyuan Intl

$1,037EVA Air

Sat, Mar 27 - Tue, Mar 30

12:10 am - 10:25 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 15m1 stop Taipei City Taiwan Taoyuan Intl

11:25 am - 6:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

21h 45m1 stop Taipei City Taiwan Taoyuan Intl

$1,212China Airlines

Mon, Feb 1 - Sat, Feb 20

12:10 am - 10:25 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 15m1 stop Taipei City Taiwan Taoyuan Intl

11:25 am - 6:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

21h 45m1 stop Taipei City Taiwan Taoyuan Intl

$5,519China Airlines

Thu, Mar 4 - Sat, Mar 13

Cheap last minute flights

Enter your travel dates to find the best prices.

12:10 am - 10:35 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 25m1 stop Taipei City Taiwan Taoyuan Intl

7:45 pm - 6:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

37h 25m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,535EVA Air

Thu, Nov 12 - Sun, Nov 29

12:10 am - 9:25 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

42h 15m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

7:45 pm - 6:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

37h 25m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,544EVA Air

Thu, Nov 12 - Sun, Nov 29

8:40 am - 11:05 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

35h 25m1 stop Singapore Changi

4:40 pm - 7:05 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

53h 25m1 stop Singapore Changi

$1,561Singapore Airlines

Fri, Nov 13 - Sun, Nov 29

8:40 am - 3:40 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

40h 00m1 stop Singapore Changi

12:05 pm - 7:05 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

58h 00m1 stop Singapore Changi

$1,562Singapore Airlines

Fri, Nov 13 - Sun, Nov 29

8:40 am - 11:05 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

35h 25m1 stop Singapore Changi

4:40 pm - 7:05 amCNX Chiang Mai-SEA Seattle/Tacoma Intl

53h 25m1 stop Singapore Changi

$1,562Singapore Airlines

Fri, Nov 13 - Sun, Nov 29

12:10 am - 1:45 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

22h 35m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

9:10 pm - 6:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

36h 00m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,573EVA Air

Thu, Nov 12 - Sun, Nov 29

12:10 am - 1:45 pmSEA Seattle/Tacoma Intl-CNX Chiang Mai

22h 35m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

9:10 pm - 6:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

36h 00m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,591EVA Air

Thu, Nov 12 - Sun, Nov 29

12:10 am - 11:20 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

44h 10m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

9:30 am - 6:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

47h 40m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,626EVA Air

Thu, Nov 12 - Sun, Nov 29

12:10 am - 10:35 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 25m1 stop Taipei City Taiwan Taoyuan Intl

7:45 pm - 6:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

37h 25m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,711EVA Air

Thu, Nov 12 - Sun, Nov 29

12:10 am - 10:35 amSEA Seattle/Tacoma Intl-CNX Chiang Mai

19h 25m1 stop Taipei City Taiwan Taoyuan Intl

7:45 pm - 6:10 pmCNX Chiang Mai-SEA Seattle/Tacoma Intl

37h 25m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,732EVA Air

Thu, Nov 12 - Sun, Nov 29

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Korean Air flights from State of Washington to Chiang Mai

Our best Korean Air deals on State of Washington to Chiang Mai flight tickets

Korean Air

Feb 21

SEA12:10 amSeattle/Tacoma Intl

31h 35m

1 stop

CNX10:45 pmChiang Mai

Mar 17

CNX12:20 amChiang Mai

28h 50m

1 stop

SEA3:10 pmSeattle/Tacoma Intl

$922

Korean Air

Jan 25

SEA7:15 amSeattle/Tacoma Intl

24h 30m

2 stops

CNX10:45 pmChiang Mai

Feb 7

CNX12:20 amChiang Mai

23h 45m

1 stop

SEA9:05 amSeattle/Tacoma Intl

$927

Korean Air

Feb 22

SEA7:20 amSeattle/Tacoma Intl

24h 25m

2 stops

CNX10:45 pmChiang Mai

Mar 17

CNX12:20 amChiang Mai

28h 50m

1 stop

SEA3:10 pmSeattle/Tacoma Intl

$928

EVA Air flights from State of Washington to Chiang Mai

Our best EVA Air deals on State of Washington to Chiang Mai flight tickets

EVA Air

Mar 27

SEA11:50 pmSeattle/Tacoma Intl

20h 35m

1 stop

CNX10:25 amChiang Mai

Mar 30

CNX11:35 amChiang Mai

21h 55m

1 stop

SEA7:30 pmSeattle/Tacoma Intl

$1,037

EVA Air

Feb 13

SEA12:10 amSeattle/Tacoma Intl

19h 25m

1 stop

CNX10:35 amChiang Mai

Feb 20

CNX11:50 amChiang Mai

21h 20m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

$1,075

EVA Air

Dec 1

SEA11:30 pmSeattle/Tacoma Intl

47h 15m

2 stops

CNX1:45 pmChiang Mai

Dec 22

CNX11:50 amChiang Mai

21h 20m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

$1,106

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Chiang Mai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Sat 5/1

10:15 am-4:35 pm

1 stop40h 20m

Chiang Mai

Wed 5/12

5:20 pm-8:45 am

1 stop29h 25m

$849

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Fri 3/19

9:40 am-3:40 pm

1 stop40h 00m

Chiang Mai

Sat 4/3

5:35 pm-8:45 am

1 stop29h 10m

$850

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Fri 3/19

9:40 am-3:40 pm

1 stop40h 00m

Chiang Mai

Sat 4/3

5:35 pm-8:45 am

1 stop29h 10m

$851

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Sun 2/21

12:10 am-10:45 pm

1 stop31h 35m

Chiang Mai

Wed 3/17

12:20 am-3:10 pm

1 stop28h 50m

$922

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Mon 1/25

7:15 am-10:45 pm

2 stops24h 30m

Chiang Mai

Sun 2/7

12:20 am-9:05 am

1 stop23h 45m

$927

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Mon 2/22

7:20 am-10:45 pm

2 stops24h 25m

Chiang Mai

Wed 3/17

12:20 am-3:10 pm

1 stop28h 50m

$928

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Thu 3/18

11:50 pm-10:35 am

1 stop20h 45m

Chiang Mai

Wed 3/24

11:50 am-7:20 pm

1 stop21h 30m

$999

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Sat 3/27

11:50 pm-10:25 am

1 stop20h 35m

Chiang Mai

Tue 3/30

11:35 am-7:30 pm

1 stop21h 55m

$1,037

Quickest round-trip

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Mon 2/1

12:10 am-10:25 am

1 stop19h 15m

Chiang Mai

Sat 2/20

11:25 am-6:10 pm

1 stop21h 45m

$1,212

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Thu 3/4

12:10 am-10:25 am

1 stop19h 15m

Chiang Mai

Sat 3/13

11:25 am-6:10 pm

1 stop21h 45m

$5,519

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 Chiang Mai

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 cheapest month to fly to Chiang Mai?

If you don’t want to visit Chiang Mai in February, then you should wait until April to fly from State of Washington, when ticket prices are also cheap, with an average price of $867.

How far in advance should I book a flight from Washington to Chiang Mai?

You are more likely to see cheaper flights to Chiang Mai from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Chiang Mai for around $1,087 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chiang Mai from State of Washington for as low as $838 on momondo.

Can stopping save me money on State of Washington to Chiang Mai flights?

You could potentially save up to 4% on your flight if you consider stops on a State of Washington to Chiang Mai flight.

Cheap State of Washington to Chiang Mai flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Chiang Mai

Best Price Found	$434
Fastest flight time	20h 45m
Direct flights	None

The best one-way flight to Chiang Mai from State of Washington in the past 72 hours is $434. The best round-trip flight deal from State of Washington to Chiang Mai found on momondo in the last 72 hours is $849.

The fastest flight from State of Washington to Chiang Mai takes 20h 45m

There are no direct flights from State of Washington to Chiang Mai. There are no popular flight routes from State of Washington to Chiang Mai.

Search flight deals

Frequently asked questions about flying from Washington to Chiang Mai

When did momondo last update prices for flights from Washington to Chiang Mai Airport?
Prices for flights from Washington to Chiang Mai Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Washington to Chiang Mai Airport?
As of November 2026, there are 3 operators available to choose from for flights from Washington to Chiang Mai Airport.
How old do you have to be to fly from Washington to Chiang Mai 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 Chiang Mai Airport.
What documentation or ID do you need to fly to Chiang Mai Airport?
The necessary travel and health documents for your Chiang Mai Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Chiang Mai

Compare and see reviews for airlines that fly from State of Washington to Chiang Mai with momondo

Airline	Rating	Free Cancellation	Price
Korean Air	PriceFrom $752	Free Cancellation	Rating 8.4 1,218 reviews	Search Korean Air flights
China Airlines	PriceFrom $800	Free Cancellation	Rating 8.3 857 reviews	Search China Airlines flights
EVA Air	PriceFrom $813	Free Cancellation	Rating 8.5 1,552 reviews	Search EVA Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Chiang Mai?

It is quick and easy to find Washington to Chiang Mai 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 Chiang Mai that suits you.

Can I find flights from Washington to Chiang Mai with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Chiang Mai from Washington with this policy.

How can momondo help me find flights from Washington to Chiang Mai?

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 Chiang Mai from Washington.

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

If you are simply researching potential flights to Chiang Mai, momondo offers a useful price alert feature which will track prices for flights to Chiang Mai from Washington and alert you when they change.

An easier way to manage your Chiang Mai trip

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Cheap flights from Washington to Chiang Mai from $434

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 Chiang Mai departing on 2/9. 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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Korean Air flights from State of Washington to Chiang Mai

Our best Korean Air deals on State of Washington to Chiang Mai flight tickets

EVA Air flights from State of Washington to Chiang Mai

Our best EVA Air deals on State of Washington to Chiang Mai flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Chiang Mai that are best for you.

See travel insights to Chiang Mai from

How to get the cheapest flight ticket from State of Washington to Chiang Mai

What is the cheapest month to fly to Chiang Mai?

How far in advance should I book a flight from Washington to Chiang Mai?

Can stopping save me money on State of Washington to Chiang Mai flights?

What is the cheapest airline that flies from Washington to Chiang Mai?

What airlines fly to Chiang Mai?

Cheap State of Washington to Chiang Mai flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Washington to Chiang Mai

Best airlines flying from State of Washington to Chiang Mai

Compare and see reviews for airlines that fly from State of Washington to Chiang Mai with momondo

Why use momondo?

An easier way to manage your Chiang Mai 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

Airports servicing Thailand

Fly your favorite airline to Chiang Mai

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Chiang Mai

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

Popular cities in Thailand

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

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According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year