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Cheap flights from Washington to Chiang Mai from $555

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 8/28. 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
$840Singapore Airlines
Tue, Oct 6 - Wed, Oct 14
Multiple Airlines Logo
7:00 am - 2:20 pm
PDX
-
CNX
40h 20m
2 stops
Multiple Airlines Logo
3:35 pm - 1:50 pm
CNX
-
PDX
37h 15m
2 stops
$897Multiple Airlines
Wed, Nov 4 - Wed, Nov 11
Multiple Airlines Logo
7:00 am - 2:20 pm
PDX
-
CNX
40h 20m
2 stops
Multiple Airlines Logo
3:35 pm - 9:35 am
CNX
-
PDX
57h 00m
2 stops
$963Multiple Airlines
Tue, Nov 3 - Sun, Nov 15
Multiple Airlines Logo
9:30 pm - 2:20 pm
PDX
-
CNX
49h 50m
2 stops
Multiple Airlines Logo
3:35 pm - 4:27 pm
CNX
-
PDX
39h 52m
2 stops
$966Multiple Airlines
Tue, Nov 3 - Tue, Nov 10
Singapore Airlines Logo
10:15 am - 4:35 pm
SEA
-
CNX
40h 20m
1 stop
Singapore Airlines Logo
4:45 pm - 7:10 am
CNX
-
SEA
29h 25m
1 stop
$973Singapore Airlines
Tue, Oct 13 - Wed, Nov 11
Multiple Airlines Logo
6:47 am - 2:20 pm
PDX
-
CNX
40h 33m
2 stops
Multiple Airlines Logo
3:35 pm - 11:10 pm
CNX
-
PDX
46h 35m
2 stops
$976Multiple Airlines
Wed, Nov 4 - Tue, Nov 17
Delta Logo
11:25 am - 10:55 pm
SEA
-
CNX
44h 30m
2 stops
Delta Logo
12:15 am - 11:51 am
CNX
-
SEA
26h 36m
1 stop
$1,016Delta
Sat, Nov 7 - Tue, Nov 10
Delta Logo
11:25 am - 10:55 pm
SEA
-
CNX
44h 30m
2 stops
Delta Logo
12:15 am - 11:51 am
CNX
-
SEA
26h 36m
1 stop
$1,028Delta
Sat, Nov 7 - Tue, Nov 10
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
$1,029China Airlines
Sun, Sep 27 - Tue, Oct 13
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
$1,030China Airlines
Sun, Sep 27 - Tue, Oct 13

Qatar Airways flights from State of Washington to Chiang Mai

Our best Qatar Airways deals on State of Washington to Chiang Mai flight tickets
Qatar Airways
May 25
SEA5:05 pmSeattle/Tacoma Intl
50h 15m
2 stops
CNX9:20 amChiang Mai
Jun 5
CNX8:00 pmChiang Mai
32h 45m
2 stops
SEA2:45 pmSeattle/Tacoma Intl
$1,329
Qatar Airways
May 25
SEA5:05 pmSeattle/Tacoma Intl
36h 05m
2 stops
CNX7:10 pmChiang Mai
Jun 5
CNX8:00 pmChiang Mai
32h 45m
2 stops
SEA2:45 pmSeattle/Tacoma Intl
$1,346
Qatar Airways
May 20
SEA5:05 pmSeattle/Tacoma Intl
36h 05m
2 stops
CNX7:10 pmChiang Mai
May 27
CNX8:00 pmChiang Mai
41h 39m
3 stops
SEA11:39 pmSeattle/Tacoma Intl
$1,739

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
Oct 30
SEA7:20 amSeattle/Tacoma Intl
25h 35m
2 stops
CNX10:55 pmChiang Mai
Nov 12
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$1,057
Korean Air
Nov 4
SEA11:00 amSeattle/Tacoma Intl
20h 55m
1 stop
CNX10:55 pmChiang Mai
Nov 8
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$1,060
Korean Air
Nov 2
SEA7:20 amSeattle/Tacoma Intl
24h 35m
2 stops
CNX10:55 pmChiang Mai
Nov 9
CNX12:15 amChiang Mai
23h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$1,065

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 May 11, 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

Tue 10/6

10:15 am-4:35 pm

1 stop40h 20m

Chiang Mai

Wed 10/14

11:30 am-8:45 am

1 stop35h 15m

$840

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 11/4

7:00 am-2:20 pm

2 stops40h 20m

Chiang Mai

Wed 11/11

3:35 pm-1:50 pm

2 stops37h 15m

$897

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 11/3

7:00 am-2:20 pm

2 stops40h 20m

Chiang Mai

Sun 11/15

3:35 pm-9:35 am

2 stops57h 00m

$963

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 11/3

9:30 pm-2:20 pm

2 stops49h 50m

Chiang Mai

Tue 11/10

3:35 pm-4:27 pm

2 stops39h 52m

$966

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 10/13

10:15 am-4:35 pm

1 stop40h 20m

Chiang Mai

Wed 11/11

4:45 pm-7:10 am

1 stop29h 25m

$973

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 11/4

6:47 am-2:20 pm

2 stops40h 33m

Chiang Mai

Tue 11/17

3:35 pm-11:10 pm

2 stops46h 35m

$976

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sat 11/7

11:25 am-10:55 pm

2 stops44h 30m

Chiang Mai

Tue 11/10

12:15 am-11:51 am

1 stop26h 36m

$1,016

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sat 11/7

11:25 am-10:55 pm

2 stops44h 30m

Chiang Mai

Tue 11/10

12:15 am-11:51 am

1 stop26h 36m

$1,028
Quickest round-trip

SeattleChiang Mai

SEA - CNX

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

$1,029

SeattleChiang Mai

SEA - CNX

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

$1,030

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 January, then you should wait until September to fly from State of Washington, when ticket prices are also cheap, with an average price of $673.

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 $1,033 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 $777 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

Fastest flight time

21h 50m

Direct flights

None
The fastest flight from State of Washington to Chiang Mai takes 21h 50m
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
Korean AirPriceFrom $418Free CancellationRating
8.4
1,217 reviews
Search Korean Air flights
Asiana AirlinesPriceFrom $675Free CancellationRating
8.1
532 reviews
Search Asiana Airlines flights
China AirlinesPriceFrom $763Free CancellationRating
8.3
826 reviews
Search China Airlines flights
EVA AirPriceFrom $853Free CancellationRating
8.5
1,445 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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