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Cheap flights from Washington to Chiang Mai from $448

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 4/19. 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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0 bags

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Find the cheapest flights from Washington to Chiang Mai

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
10:15 am - 4:35 pm
SEA
-
CNX
40h 20m
1 stop
Singapore Airlines Logo
11:30 am - 8:45 am
CNX
-
SEA
35h 15m
1 stop
$742Singapore Airlines
Sat, Sep 19 - Wed, Sep 30
China Airlines Logo
1:15 am - 10:20 am
SEA
-
CNX
19h 05m
1 stop
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m
1 stop
$772China Airlines
Tue, Sep 15 - Mon, Sep 21
China Airlines Logo
1:55 am - 10:20 am
SEA
-
CNX
18h 25m
1 stop
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m
1 stop
$774China Airlines
Sun, Sep 13 - Mon, Sep 21
China Airlines Logo
1:55 am - 10:20 am
SEA
-
CNX
18h 25m
1 stop
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m
1 stop
$799China Airlines
Mon, Sep 14 - Thu, Sep 24
Multiple Airlines Logo
10:15 am - 10:50 pm
SEA
-
CNX
46h 35m
2 stops
Multiple Airlines Logo
11:20 am - 7:45 pm
CNX
-
SEA
22h 25m
1 stop
$802Multiple Airlines
Sun, Aug 23 - Sat, Sep 5
Multiple Airlines Logo
7:13 pm - 10:20 am
SEA
-
CNX
25h 07m
2 stops
Multiple Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m
1 stop
$805Multiple Airlines
Tue, Sep 15 - Mon, Sep 21
China Airlines Logo
1:55 am - 10:20 am
SEA
-
CNX
18h 25m
1 stop
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m
1 stop
$806China Airlines
Mon, Sep 14 - Mon, Sep 21
China Airlines Logo
1:55 am - 10:20 am
SEA
-
CNX
18h 25m
1 stop
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m
1 stop
$809China Airlines
Tue, Sep 8 - Sun, Sep 20
China Airlines Logo
1:55 am - 10:20 am
SEA
-
CNX
18h 25m
1 stop
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m
1 stop
$810China Airlines
Sun, Sep 13 - Sun, Sep 20
Multiple Airlines Logo
1:15 am - 10:20 am
SEA
-
CNX
19h 05m
1 stop
Multiple Airlines Logo
11:20 am - 8:06 am
CNX
-
SEA
34h 46m
2 stops
$811Multiple Airlines
Tue, Sep 15 - Mon, Sep 21

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
Apr 14
SEA12:30 amSeattle/Tacoma Intl
19h 55m
1 stop
CNX10:25 amChiang Mai
May 26
CNX11:55 amChiang Mai
21h 35m
2 stops
SEA7:30 pmSeattle/Tacoma Intl
$897
EVA Air
Aug 23
SEA2:10 amSeattle/Tacoma Intl
18h 15m
1 stop
CNX10:25 amChiang Mai
Sep 6
CNX8:00 pmChiang Mai
37h 40m
2 stops
SEA7:40 pmSeattle/Tacoma Intl
$910
EVA Air
Apr 14
SEA12:30 amSeattle/Tacoma Intl
23h 15m
2 stops
CNX1:45 pmChiang Mai
May 26
CNX11:55 amChiang Mai
21h 35m
2 stops
SEA7:30 pmSeattle/Tacoma Intl
$935

STARLUX Airlines flights from State of Washington to Chiang Mai

Our best STARLUX Airlines deals on State of Washington to Chiang Mai flight tickets
STARLUX Airlines
Apr 12
SEA1:15 amSeattle/Tacoma Intl
25h 05m
1 stop
CNX4:20 pmChiang Mai
May 28
CNX5:20 pmChiang Mai
36h 50m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
$932
STARLUX Airlines
Aug 20
SEA1:15 amSeattle/Tacoma Intl
25h 05m
1 stop
CNX4:20 pmChiang Mai
Sep 8
CNX5:20 pmChiang Mai
36h 50m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
$945
STARLUX Airlines
Mar 29
SEA1:15 amSeattle/Tacoma Intl
25h 05m
1 stop
CNX4:20 pmChiang Mai
Apr 14
CNX5:20 pmChiang Mai
36h 50m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
$1,968

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 March 25, 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 - CNX

SEACNX

Seattle/Tacoma Intl

Sat 9/19

10:15 am-4:35 pm

1 stop40h 20m

Chiang Mai

Wed 9/30

11:30 am-8:45 am

1 stop35h 15m

$742

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 9/15

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Mon 9/21

11:20 am-7:15 pm

1 stop21h 55m

$772
Quickest round-trip

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 9/13

1:55 am-10:20 am

1 stop18h 25m

Chiang Mai

Mon 9/21

11:20 am-7:15 pm

1 stop21h 55m

$774

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 9/14

1:55 am-10:20 am

1 stop18h 25m

Chiang Mai

Thu 9/24

11:20 am-7:15 pm

1 stop21h 55m

$799

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 8/23

10:15 am-10:50 pm

2 stops46h 35m

Chiang Mai

Sat 9/5

11:20 am-7:45 pm

1 stop22h 25m

$802

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 9/15

7:13 pm-10:20 am

2 stops25h 07m

Chiang Mai

Mon 9/21

11:20 am-7:15 pm

1 stop21h 55m

$805

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 9/14

1:55 am-10:20 am

1 stop18h 25m

Chiang Mai

Mon 9/21

11:20 am-7:15 pm

1 stop21h 55m

$806

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 9/8

1:55 am-10:20 am

1 stop18h 25m

Chiang Mai

Sun 9/20

11:20 am-7:15 pm

1 stop21h 55m

$809

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 9/13

1:55 am-10:20 am

1 stop18h 25m

Chiang Mai

Sun 9/20

11:20 am-7:15 pm

1 stop21h 55m

$810

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 9/15

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Mon 9/21

11:20 am-8:06 am

2 stops34h 46m

$811

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 September, then you should wait until February to fly from State of Washington, when ticket prices are also cheap, with an average price of $810.

How far in advance should I book a flight 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 $1,028 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 $762 on momondo.

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

You could potentially save up to 15% 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

18h 25m

Direct flights

None
The fastest flight from State of Washington to Chiang Mai takes 18h 25m
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

  • 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
Korean AirPriceFrom $418Free CancellationRating
8.4
1,202 reviews
Search Korean Air flights
Asiana AirlinesPriceFrom $675Free CancellationRating
8.1
506 reviews
Search Asiana Airlines flights
China AirlinesPriceFrom $736Free CancellationRating
8.3
817 reviews
Search China Airlines flights
Singapore AirlinesPriceFrom $768Free CancellationRating
8.2
1,484 reviews
Search Singapore Airlines flights
EVA AirPriceFrom $853Free CancellationRating
8.5
1,390 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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