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Cheap flights from Washington to Chiang Mai from $403

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 3/22. 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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Find the cheapest flights from Washington to Chiang Mai

Cheap round-trip flights

Enter your travel dates to find the best prices.
Cathay Pacific Logo
11:45 am - 9:45 am
SEA
-
CNX
32h 00m
1 stop
Cathay Pacific Logo
7:25 pm - 10:05 am
CNX
-
SEA
28h 40m
1 stop
$702Cathay Pacific
Mon, Apr 20 - Sun, Apr 26
Cathay Pacific Logo
11:45 am - 9:45 am
SEA
-
CNX
32h 00m
1 stop
Cathay Pacific Logo
7:25 pm - 10:05 am
CNX
-
SEA
28h 40m
1 stop
$714Cathay Pacific
Tue, Apr 7 - Wed, Apr 22
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
$715China Airlines
Tue, Apr 14 - Thu, Apr 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
$734China Airlines
Mon, Apr 13 - Thu, Apr 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
$736China Airlines
Sun, Apr 19 - Mon, Apr 27
Singapore Airlines Logo
10:15 am - 4:35 pm
SEA
-
CNX
40h 20m
1 stop
Singapore Airlines Logo
5:35 pm - 8:45 am
CNX
-
SEA
29h 10m
1 stop
$738Singapore Airlines
Thu, Apr 16 - Sat, Apr 25
Singapore Airlines Logo
8:45 am - 3:45 pm
SEA
-
CNX
40h 00m
1 stop
Singapore Airlines Logo
5:35 pm - 8:45 am
CNX
-
SEA
29h 10m
1 stop
$741Singapore Airlines
Thu, Mar 5 - Thu, Apr 2
STARLUX Airlines Logo
3:52 pm - 3:55 pm
PDX
-
CNX
33h 03m
2 stops
STARLUX Airlines Logo
4:55 pm - 10:41 pm
CNX
-
PDX
43h 46m
2 stops
$841STARLUX Airlines
Thu, Mar 5 - Thu, Mar 12
Multiple Airlines Logo
5:51 pm - 10:20 am
PDX
-
CNX
26h 29m
2 stops
Multiple Airlines Logo
11:20 am - 9:38 am
CNX
-
PDX
36h 18m
2 stops
$921Multiple Airlines
Sat, Apr 25 - Sun, May 10
Multiple Airlines Logo
7:18 pm - 10:20 am
PDX
-
CNX
25h 02m
2 stops
Multiple Airlines Logo
11:20 am - 9:30 am
CNX
-
PDX
36h 10m
2 stops
$934Multiple Airlines
Sat, Apr 25 - Sun, May 10

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 5
SEA11:30 pmSeattle/Tacoma Intl
20h 05m
1 stop
CNX10:35 amChiang Mai
Mar 12
CNX11:50 amChiang Mai
21h 20m
1 stop
SEA7:10 pmSeattle/Tacoma Intl
$776
EVA Air
Apr 15
SEA1:30 amSeattle/Tacoma Intl
18h 55m
1 stop
CNX10:25 amChiang Mai
Apr 30
CNX11:35 amChiang Mai
21h 55m
1 stop
SEA7:30 pmSeattle/Tacoma Intl
$781
EVA Air
Mar 1
SEA12:10 amSeattle/Tacoma Intl
19h 25m
1 stop
CNX10:35 amChiang Mai
Apr 7
CNX11:35 amChiang Mai
21h 55m
1 stop
SEA7:30 pmSeattle/Tacoma Intl
$783

Singapore Airlines flights from State of Washington to Chiang Mai

Our best Singapore Airlines deals on State of Washington to Chiang Mai flight tickets
Singapore Airlines
Apr 16
SEA10:15 amSeattle/Tacoma Intl
40h 20m
1 stop
CNX4:35 pmChiang Mai
Apr 25
CNX5:35 pmChiang Mai
29h 10m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$738
Singapore Airlines
Mar 5
SEA8:45 amSeattle/Tacoma Intl
40h 00m
1 stop
CNX3:45 pmChiang Mai
Apr 2
CNX5:35 pmChiang Mai
29h 10m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$741

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 February 7, 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

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 4/20

11:45 am-9:45 am

1 stop32h 00m

Chiang Mai

Sun 4/26

7:25 pm-10:05 am

1 stop28h 40m

$702

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 4/7

11:45 am-9:45 am

1 stop32h 00m

Chiang Mai

Wed 4/22

7:25 pm-10:05 am

1 stop28h 40m

$714

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 4/14

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Thu 4/30

11:20 am-7:15 pm

1 stop21h 55m

$715

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 4/13

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Thu 4/30

11:20 am-7:15 pm

1 stop21h 55m

$734

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 4/19

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Mon 4/27

11:20 am-7:15 pm

1 stop21h 55m

$736

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 4/16

10:15 am-4:35 pm

1 stop40h 20m

Chiang Mai

Sat 4/25

5:35 pm-8:45 am

1 stop29h 10m

$738

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 3/5

8:45 am-3:45 pm

1 stop40h 00m

Chiang Mai

Thu 4/2

5:35 pm-8:45 am

1 stop29h 10m

$741

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 3/5

3:52 pm-3:55 pm

2 stops33h 03m

Chiang Mai

Thu 3/12

4:55 pm-10:41 pm

2 stops43h 46m

$841

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/25

5:51 pm-10:20 am

2 stops26h 29m

Chiang Mai

Sun 5/10

11:20 am-9:38 am

2 stops36h 18m

$921

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/25

7:18 pm-10:20 am

2 stops25h 02m

Chiang Mai

Sun 5/10

11:20 am-9:30 am

2 stops36h 10m

$934

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 $830.

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 $1,024 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 $683 on momondo.

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

You could potentially save up to 12% 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

19h 15m

Direct flights

None
The fastest flight from State of Washington to Chiang Mai takes 19h 15m
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
1,188 reviews
Search Korean Air flights
Asiana AirlinesPriceFrom $679Free CancellationRating
8.1
503 reviews
Search Asiana Airlines flights
China AirlinesPriceFrom $730Free CancellationRating
8.3
803 reviews
Search China Airlines flights
Singapore AirlinesPriceFrom $768Free CancellationRating
8.2
1,451 reviews
Search Singapore Airlines flights
EVA AirPriceFrom $853Free CancellationRating
8.4
1,347 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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