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Cheap flights from Washington to Chiang Mai from $371

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 9/2. 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

Asiana Airlines Logo
2:15 pm - 11:40 pmSEA-CNX
19h 25m1 stop
Asiana Airlines Logo
12:45 am - 12:30 pmCNX-SEA
25h 45m1 stop
$673Asiana Airlines
Find Deal
Mon, Sep 1 - Mon, Sep 15
Asiana Airlines Logo
2:30 pm - 11:40 pmSEA-CNX
19h 10m1 stop
Asiana Airlines Logo
12:45 am - 12:30 pmCNX-SEA
25h 45m1 stop
$675Asiana Airlines
Find Deal
Mon, Aug 25 - Wed, Sep 10
Logo
4:30 pm - 9:20 amSEA-CNX
26h 50m2 stops
Logo
8:00 pm - 2:25 pmCNX-SEA
32h 25m2 stops
$740
Find Deal
Thu, Aug 28 - Sun, Sep 7
Logo
4:30 pm - 9:20 amSEA-CNX
26h 50m2 stops
Logo
8:00 pm - 2:25 pmCNX-SEA
56h 25m2 stops
$777
Find Deal
Mon, Aug 25 - Thu, Sep 11
Korean Air Logo
12:50 pm - 9:55 pmSEA-CNX
19h 05m1 stop
Korean Air Logo
11:15 pm - 10:40 amCNX-SEA
25h 25m1 stop
$787Korean Air
Find Deal
Sun, Sep 21 - Sun, Sep 28
Korean Air Logo
12:50 pm - 9:55 pmSEA-CNX
19h 05m1 stop
Korean Air Logo
12:15 am - 9:00 amCNX-SEA
23h 45m1 stop
$798Korean Air
Find Deal
Tue, Oct 21 - Mon, Nov 24
STARLUX Airlines Logo
1:15 am - 4:20 pmSEA-CNX
25h 05m1 stop
STARLUX Airlines Logo
5:20 pm - 4:10 pmCNX-SEA
36h 50m1 stop
$811STARLUX Airlines
Find Deal
Sun, Aug 31 - Tue, Sep 16
STARLUX Airlines Logo
1:15 am - 4:20 pmSEA-CNX
25h 05m1 stop
STARLUX Airlines Logo
5:20 pm - 4:10 pmCNX-SEA
36h 50m1 stop
$836STARLUX Airlines
Find Deal
Sun, Aug 24 - Thu, Sep 11
Delta Logo
8:55 am - 9:55 pmPDX-CNX
23h 00m2 stops
Delta Logo
12:15 am - 8:49 pmCNX-PDX
35h 34m2 stops
$840Delta
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Tue, Sep 2 - Mon, Dec 1
Delta Logo
3:18 pm - 9:55 pmPDX-CNX
40h 37m2 stops
Delta Logo
12:15 am - 4:31 pmCNX-PDX
31h 16m2 stops
$846Delta
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Thu, Sep 4 - Mon, Dec 1

Delta flights from State of Washington to Chiang Mai

Our best Delta deals on State of Washington to Chiang Mai flight tickets
Delta
Sep 2
PDX8:55 amPortland
23h 00m
2 stops
CNX9:55 pmChiang Mai
Dec 1
CNX12:15 amChiang Mai
35h 34m
2 stops
PDX8:49 pmPortland
$840
Find similar
Delta
Sep 4
PDX3:18 pmPortland
40h 37m
2 stops
CNX9:55 pmChiang Mai
Dec 1
CNX12:15 amChiang Mai
31h 16m
2 stops
PDX4:31 pmPortland
$846
Find similar
Delta
Sep 13
PDX7:15 amPortland
24h 40m
2 stops
CNX9:55 pmChiang Mai
Sep 21
CNX11:15 pmChiang Mai
31h 55m
2 stops
PDX5:10 pmPortland
$964
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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
Jan 15
SEA8:45 amSeattle/Tacoma Intl
39h 50m
1 stop
CNX3:35 pmChiang Mai
Mar 18
CNX12:00 pmChiang Mai
34h 10m
1 stop
SEA8:10 amSeattle/Tacoma Intl
$847
Find similar
Singapore Airlines
Oct 11
SEA10:15 amSeattle/Tacoma Intl
40h 25m
1 stop
CNX4:40 pmChiang Mai
Oct 17
CNX11:15 amChiang Mai
35h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$873
Find similar
Singapore Airlines
Oct 11
SEA10:15 amSeattle/Tacoma Intl
40h 25m
1 stop
CNX4:40 pmChiang Mai
Oct 18
CNX5:40 pmChiang Mai
29h 05m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$894
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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 7, 2025.
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 9/1

2:15 pm-11:40 pm

1 stop19h 25m

Chiang Mai

Mon 9/15

12:45 am-12:30 pm

1 stop25h 45m

$673

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 8/25

2:30 pm-11:40 pm

1 stop19h 10m

Chiang Mai

Wed 9/10

12:45 am-12:30 pm

1 stop25h 45m

$675

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 8/28

4:30 pm-9:20 am

2 stops26h 50m

Chiang Mai

Sun 9/7

8:00 pm-2:25 pm

2 stops32h 25m

$740

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 8/25

4:30 pm-9:20 am

2 stops26h 50m

Chiang Mai

Thu 9/11

8:00 pm-2:25 pm

2 stops56h 25m

$777

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 9/21

12:50 pm-9:55 pm

1 stop19h 05m

Chiang Mai

Sun 9/28

11:15 pm-10:40 am

1 stop25h 25m

$787

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 10/21

12:50 pm-9:55 pm

1 stop19h 05m

Chiang Mai

Mon 11/24

12:15 am-9:00 am

1 stop23h 45m

$798

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 8/31

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

Tue 9/16

5:20 pm-4:10 pm

1 stop36h 50m

$811

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 8/24

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

Thu 9/11

5:20 pm-4:10 pm

1 stop36h 50m

$836

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 9/2

8:55 am-9:55 pm

2 stops23h 00m

Chiang Mai

Mon 12/1

12:15 am-8:49 pm

2 stops35h 34m

$840

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 9/4

3:18 pm-9:55 pm

2 stops40h 37m

Chiang Mai

Mon 12/1

12:15 am-4:31 pm

2 stops31h 16m

$846

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 March, then you should wait until August to fly from State of Washington, when ticket prices are also cheap, with an average price of $842.

What is the cheapest day to depart on your flight to Chiang Mai?

The cheapest day to depart from State of Washington to Chiang Mai is on a Tuesday. Travelers who choose to depart for Chiang Mai on a Tuesday will often find tickets for as low as $882. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to Chiang Mai for around $1,415.

What is the cheapest time of day to depart on your flight to Chiang Mai?

Flying to Chiang Mai from State of Washington in the morning is the least expensive time of day to depart. momondo users have found prices as low as $929 when looking at flights departing in the morning. Flights to Chiang Mai are more costly in the evening, with an average ticket price of $1,057. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,005 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 $789 on momondo.

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

You could potentially save up to 36% 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

$371

Fastest flight time

18h 40m

Direct flights

None

Airports in Chiang Mai

1 airport
The best one-way flight to Chiang Mai from State of Washington in the past 72 hours is $371. The best round-trip flight deal from State of Washington to Chiang Mai found on momondo in the last 72 hours is $673.
The fastest flight from State of Washington to Chiang Mai takes 18h 40m
There are no direct flights from State of Washington to Chiang Mai. Popular non-direct routes for this connection are Portland Airport - Chiang Mai Airport and Seattle/Tacoma Intl Airport - Chiang Mai Airport.
There is 1 airport near Chiang Mai: Chiang Mai (CNX)
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  • 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
Asiana AirlinesPriceFrom $670Free CancellationRating
8.2
470 reviews
Search Asiana Airlines flights
China AirlinesPriceFrom $730Free CancellationRating
8.3
760 reviews
Search China Airlines flights
Singapore AirlinesPriceFrom $779Free CancellationRating
8.1
1,344 reviews
Search Singapore Airlines flights
Korean AirPriceFrom $814Free CancellationRating
8.4
1,121 reviews
Search Korean Air flights
EVA AirPriceFrom $865Free CancellationRating
8.4
1,225 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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