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Cheap flights from Washington to Chiang Mai from $421

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 11/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Chiang Mai

Cheap round-trip flights

Enter your travel dates to find the best prices.
Korean Air Logo
11:00 am - 10:55 pmSEA  Seattle/Tacoma Intl-CNX Chiang Mai
20h 55m1 stop Incheon Intl
Korean Air Logo
12:15 am - 9:00 amCNX  Chiang Mai-SEA Seattle/Tacoma Intl
23h 45m1 stop Incheon Intl
$844Korean Air
Tue, Feb 2 - Mon, Feb 15
China Airlines Logo
1:55 am - 10:20 amSEA  Seattle/Tacoma Intl-CNX Chiang Mai
18h 25m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
11:20 am - 7:45 pmCNX  Chiang Mai-SEA Seattle/Tacoma Intl
22h 25m1 stop Taipei City Taiwan Taoyuan Intl
$866China Airlines
Sat, Sep 5 - Sat, Sep 12
China Airlines Logo
1:15 am - 10:20 amSEA  Seattle/Tacoma Intl-CNX Chiang Mai
19h 05m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
11:20 am - 7:15 pmCNX  Chiang Mai-SEA Seattle/Tacoma Intl
21h 55m1 stop Taipei City Taiwan Taoyuan Intl
$866China Airlines
Sun, Sep 27 - Tue, Oct 13
China Airlines Logo
12:10 am - 10:25 amSEA  Seattle/Tacoma Intl-CNX Chiang Mai
19h 15m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
11:25 am - 6:10 pmCNX  Chiang Mai-SEA Seattle/Tacoma Intl
21h 45m1 stop Taipei City Taiwan Taoyuan Intl
$866China Airlines
Mon, Jan 18 - Sun, Feb 7
Korean Air Logo
11:00 am - 10:55 pmSEA  Seattle/Tacoma Intl-CNX Chiang Mai
20h 55m1 stop Incheon Intl
Korean Air Logo
12:15 am - 9:00 amCNX  Chiang Mai-SEA Seattle/Tacoma Intl
23h 45m1 stop Incheon Intl
$870Korean Air
Mon, Nov 9 - Sun, Dec 6
Korean Air Logo
11:00 am - 10:55 pmSEA  Seattle/Tacoma Intl-CNX Chiang Mai
20h 55m1 stop Incheon Intl
Korean Air Logo
12:15 am - 9:00 amCNX  Chiang Mai-SEA Seattle/Tacoma Intl
23h 45m1 stop Incheon Intl
$870Korean Air
Wed, Jan 20 - Wed, Jan 27
Korean Air Logo
11:00 am - 10:55 pmSEA  Seattle/Tacoma Intl-CNX Chiang Mai
20h 55m1 stop Incheon Intl
Korean Air Logo
12:15 am - 9:00 amCNX  Chiang Mai-SEA Seattle/Tacoma Intl
23h 45m1 stop Incheon Intl
$870Korean Air
Thu, Nov 26 - Sat, Dec 5
EVA Air Logo
1:30 am - 10:25 amSEA  Seattle/Tacoma Intl-CNX Chiang Mai
18h 55m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
11:35 am - 7:20 pmCNX  Chiang Mai-SEA Seattle/Tacoma Intl
21h 45m1 stop Taipei City Taiwan Taoyuan Intl
$905EVA Air
Tue, Oct 6 - Thu, Oct 15
EVA Air Logo
12:10 am - 10:35 amSEA  Seattle/Tacoma Intl-CNX Chiang Mai
19h 25m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
11:50 am - 5:30 pmCNX  Chiang Mai-SEA Seattle/Tacoma Intl
20h 40m1 stop Taipei City Taiwan Taoyuan Intl
$905EVA Air
Tue, Nov 24 - Thu, Dec 3
EVA Air Logo
1:30 am - 10:25 amSEA  Seattle/Tacoma Intl-CNX Chiang Mai
18h 55m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
11:50 am - 6:10 pmCNX  Chiang Mai-SEA Seattle/Tacoma Intl
21h 20m1 stop Taipei City Taiwan Taoyuan Intl
$905EVA Air
Mon, Oct 12 - Wed, Feb 17

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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 2
SEA11:00 amSeattle/Tacoma Intl
20h 55m
1 stop
CNX10:55 pmChiang Mai
Feb 15
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$844
Korean Air
Nov 25
SEA11:00 amSeattle/Tacoma Intl
20h 55m
1 stop
CNX10:55 pmChiang Mai
Dec 2
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$870
Korean Air
Nov 9
SEA2:49 pmSeattle/Tacoma Intl
41h 06m
2 stops
CNX10:55 pmChiang Mai
Dec 6
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$875

China Airlines flights from State of Washington to Chiang Mai

Our best China Airlines deals on State of Washington to Chiang Mai flight tickets
China Airlines
Sep 27
SEA1:15 amSeattle/Tacoma Intl
19h 05m
1 stop
CNX10:20 amChiang Mai
Oct 13
CNX11:20 amChiang Mai
21h 55m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
$866
China Airlines
Sep 27
SEA1:15 amSeattle/Tacoma Intl
19h 05m
1 stop
CNX10:20 amChiang Mai
Oct 13
CNX11:20 amChiang Mai
21h 55m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
$867
China Airlines
Jan 26
SEA12:10 amSeattle/Tacoma Intl
19h 15m
1 stop
CNX10:25 amChiang Mai
Feb 4
CNX11:25 amChiang Mai
21h 45m
1 stop
SEA6:10 pmSeattle/Tacoma Intl
$869

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Chiang Mai 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, momondo users made 832,500 searches. Data last updated August 12, 2026.
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

Tue 2/2

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Mon 2/15

12:15 am-9:00 am

1 stop23h 45m

$844

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Sat 9/5

1:55 am-10:20 am

1 stop18h 25m

Chiang Mai

Sat 9/12

11:20 am-7:45 pm

1 stop22h 25m

$866

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Sun 9/27

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Tue 10/13

11:20 am-7:15 pm

1 stop21h 55m

$866

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Mon 1/18

12:10 am-10:25 am

1 stop19h 15m

Chiang Mai

Sun 2/7

11:25 am-6:10 pm

1 stop21h 45m

$866

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Mon 11/9

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Sun 12/6

12:15 am-9:00 am

1 stop23h 45m

$870

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Wed 1/20

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Wed 1/27

12:15 am-9:00 am

1 stop23h 45m

$870

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Thu 11/26

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Sat 12/5

12:15 am-9:00 am

1 stop23h 45m

$870

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Tue 10/6

1:30 am-10:25 am

1 stop18h 55m

Chiang Mai

Thu 10/15

11:35 am-7:20 pm

1 stop21h 45m

$905
Quickest round-trip

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Tue 11/24

12:10 am-10:35 am

1 stop19h 25m

Chiang Mai

Thu 12/3

11:50 am-5:30 pm

1 stop20h 40m

$905

SeattleChiang Mai

SEA Seattle/Tacoma Intl - CNX Chiang Mai

SEACNX

Seattle/Tacoma Intl

Mon 10/12

1:30 am-10:25 am

1 stop18h 55m

Chiang Mai

Wed 2/17

11:50 am-6:10 pm

1 stop21h 20m

$905

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chiang Mai from

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

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 January to fly from State of Washington, when ticket prices are also cheap, with an average price of $853.

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

You could potentially save up to 3% 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

Fastest flight time

20h 05m

Direct flights

None
The fastest flight from State of Washington to Chiang Mai takes 20h 05m
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?

  • 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
China AirlinesPriceFrom $771Free CancellationRating
8.3
841 reviews
Search China Airlines flights
EVA AirPriceFrom $853Free CancellationRating
8.5
1,515 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.

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