HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Chiang Mai

$439+ Cheap flights from Washington to Chiang Mai (CNX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CNX
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Chiang Mai with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Washington to Chiang Mai

Keep the following information in mind while searching for Washington to Chiang Mai flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$804
(FlightHub)

One-way from

$439
(oojo)

Popular in

June

Cheapest in

March

Average price

$851
Provider with most accurate pricing for Seattle/Tacoma Intl-Chiang Mai flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Chiang Mai flights.
Search Deals
From Washington to Chiang Mai
Search Deals
One-way flight from Washington to Chiang Mai
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($364 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($69 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Washington to Chiang Mai

Cheapest flights from Washington to Chiang Mai
Explore the most affordable flight options available from Washington to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This KAYAK deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/267:10 amSEA - CNX
2 stops40h 15mChina Eastern
Wed 6/42:55 pmCNX - SEA
2 stops40h 05mChina Eastern
Deal found 2/20$764
This FlightHub deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/231:10 amSEA - CNX
1 stop19h 15mChina Airlines
Tue 4/111:20 amCNX - SEA
1 stop22h 10mChina Airlines
Deal found 2/19$804
This oojo deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2412:00 pmSEA - CNX
1 stop36h 05mKorean Air
Wed 4/211:15 pmCNX - SEA
1 stop25h 25mKorean Air
Deal found 2/19$838
This FlightHub deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/72:15 pmSEA - CNX
1 stop19h 25mAsiana Airlines
Tue 4/2212:45 amCNX - SEA
1 stop25h 45mAsiana Airlines
Deal found 2/19$842
This Gotogate deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/64:30 pmSEA - CNX
2 stops26h 50mMultiple Airlines
Tue 5/138:00 pmCNX - SEA
2 stops32h 25mMultiple Airlines
Deal found 2/18$851
This oojo deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1512:30 amSEA - CNX
1 stop19h 55mEVA Air
Thu 5/111:35 amCNX - SEA
1 stop21h 55mEVA Air
Deal found 2/19$859
This oojo deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/161:15 amSEA - CNX
1 stop25h 05mSTARLUX Airlines
Sat 5/35:20 pmCNX - SEA
1 stop36h 50mSTARLUX Airlines
Deal found 2/20$865
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1611:35 amSEA - CNX
1 stop36h 30mDelta
Wed 3/263:20 pmCNX - SEA
1 stop37h 20mDelta
Deal found 2/19$877
This Gurufare deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/68:45 amSEA - CNX
1 stop41h 05mSingapore Airlines
Mon 11/175:50 pmCNX - SEA
1 stop28h 20mSingapore Airlines
Deal found 2/19$891
This Ovago deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/65:20 pmPDX - CNX
2 stops33h 00mSTARLUX Airlines
Sun 4/135:20 pmCNX - PDX
2 stops41h 31mSTARLUX Airlines
Deal found 2/20$960
This Expedia deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/129:50 pmPDX - CNX
2 stops51h 25mMultiple Airlines
Tue 11/255:15 pmCNX - PDX
2 stops40h 38mMultiple Airlines
Deal found 2/20$990
This FlightHub deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/174:30 pmSEA - CNX
2 stops28h 45mQatar Airways
Sat 5/38:00 pmCNX - SEA
2 stops54h 45mQatar Airways
Deal found 2/20$1,066

Find flights from Washington to Chiang Mai within your budget

Customize your flight search to find flights from 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, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Washington

Fly to

Chiang Mai

Route

Depart

Return

Price

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 5/26

7:10 am-1:25 pm

2 stops40h 15m

Chiang Mai

Wed 6/4

2:55 pm-5:00 pm

2 stops40h 05m

$764

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 3/23

1:10 am-10:25 am

1 stop19h 15m

Chiang Mai

Tue 4/1

11:20 am-7:30 pm

1 stop22h 10m

$804

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 3/24

12:00 pm-2:05 pm

1 stop36h 05m

Chiang Mai

Wed 4/2

11:15 pm-10:40 am

1 stop25h 25m

$838

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 4/7

2:15 pm-11:40 pm

1 stop19h 25m

Chiang Mai

Tue 4/22

12:45 am-12:30 pm

1 stop25h 45m

$842

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 5/6

4:30 pm-9:20 am

2 stops26h 50m

Chiang Mai

Tue 5/13

8:00 pm-2:25 pm

2 stops32h 25m

$851

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 4/15

12:30 am-10:25 am

1 stop19h 55m

Chiang Mai

Thu 5/1

11:35 am-7:30 pm

1 stop21h 55m

$859

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Wed 4/16

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

Sat 5/3

5:20 pm-4:10 pm

1 stop36h 50m

$865

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 3/16

11:35 am-2:05 pm

1 stop36h 30m

Chiang Mai

Tue 3/25

3:20 pm-2:40 pm

1 stop37h 20m

$877

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 4/6

5:20 pm-4:20 pm

2 stops33h 00m

Chiang Mai

Sun 4/13

5:20 pm-8:51 pm

2 stops41h 31m

$960

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 4/17

4:30 pm-11:15 am

2 stops28h 45m

Chiang Mai

Sat 5/3

8:00 pm-12:45 pm

2 stops54h 45m

$1,066

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 27 results
1
2
3

Best time to book a flight from Washington to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Washington to Chiang Mai

Get recent, data-driven insights about flights from Washington to Chiang Mai including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from State of Washington to Chiang Mai?

Currently, February is the cheapest month in which you can book a flight from State of Washington to Chiang Mai (average of $1,041). Flying from State of Washington to Chiang Mai in December is currently the most expensive (average of $1,678). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to CNX?

Find hourly flight availability from Washington to Chiang Mai. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

When flying from State of Washington to Chiang Mai, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Chiang Mai by month

Plan your trip to Chiang Mai by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chiang Mai ranges from 0.0 - 9.8 inches per month. September is typically the wettest month, when rainfall can reach 9.8 in. January is typically the driest time to visit Chiang Mai when rainfall is around 0.0 in.

Temperature in Chiang Mai by month

Plan your trip to Chiang Mai by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chiang Mai, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

Reviews of airlines servicing Chiang Mai

Get insights into the airlines that provide service to Chiang Mai. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chiang Mai. Reviews last updated February 20, 2025.
To help decide which airline to fly from Washington to Chiang Mai, see what other customers have to say about STARLUX Airlines, EVA Air and Korean Air. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Food

9.0

Comfort

9.0

Overall

9.1

Boarding

9.1

Entertainment

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

STARLUX Airlines
9.1
Wonderful
140 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Food

9.0

Comfort

9.0

Overall

9.1

Boarding

9.1

Entertainment

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

EVA Air
8.4
Very good
1,200 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Food

9.0

Comfort

9.0

Overall

9.1

Boarding

9.1

Entertainment

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Korean Air
8.4
Very good
1,037 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Food

9.0

Comfort

9.0

Overall

9.1

Boarding

9.1

Entertainment

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Asiana Airlines
8.3
Very good
446 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Food

9.0

Comfort

9.0

Overall

9.1

Boarding

9.1

Entertainment

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

China Airlines
8.2
Very good
727 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Food

9.0

Comfort

9.0

Overall

9.1

Boarding

9.1

Entertainment

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Related info for your journey

Find useful and relevant information for your journey from Washington to Chiang Mai. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Chiang Mai from Washington?

    Chiang Mai (CNX), located 1.9 mi from the city center, is the airport you fly into when you book flights from Washington to Chiang Mai.

  • What are the cheapest airlines to fly from State of Washington to Chiang Mai one-way?

    One-way options have recently been found by users for as low as $439 on STARLUX Airlines. Other airlines that offer cheap prices include Asiana Airlines from $511 and Qatar Airways from $545 one-way.

  • Can I find deals for flights from Washington to Chiang Mai that include hotel bookings?

    Yes. In addition to deals on Washington to Chiang Mai flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Chiang Mai?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Chiang Mai.

  • Can I find deals for business class flights from Washington to Chiang Mai?

    Yes. Cheapflights offers flight deals from Washington to Chiang Mai by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Chiang Mai?

    Currently, February is the cheapest month in which you can book a flight from State of Washington to Chiang Mai (average of $1,041). Flying from State of Washington to Chiang Mai in December is currently the most expensive (average of $1,678). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Chiang Mai

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Suvarnabhumi flights
Los Angeles to Suvarnabhumi flights
Newark to Suvarnabhumi flights
Seattle to Suvarnabhumi flights
LaGuardia to Suvarnabhumi flights
San Francisco to Suvarnabhumi flights
O'Hare Intl to Suvarnabhumi flights
Hobby to Suvarnabhumi flights
Dallas/Fort Worth to Suvarnabhumi flights
Ontario to Suvarnabhumi flights
Dulles Intl to Suvarnabhumi flights
Reagan-National to Suvarnabhumi flights
Boston to Suvarnabhumi flights
Baltimore to Suvarnabhumi flights
George Bush Intcntl to Suvarnabhumi flights
Midway to Suvarnabhumi flights
San Jose to Suvarnabhumi flights
Atlanta to Suvarnabhumi flights
Santa Ana to Suvarnabhumi flights
Oakland to Suvarnabhumi flights
Love Field to Suvarnabhumi flights
Miami to Suvarnabhumi flights
John F Kennedy Intl to Don Mueang Intl flights
Sky Harbor Intl to Suvarnabhumi flights
Minneapolis to Suvarnabhumi flights
Charlotte to Suvarnabhumi flights
Los Angeles to Don Mueang Intl flights
Denver to Suvarnabhumi flights
Honolulu to Suvarnabhumi flights
Orlando to Suvarnabhumi flights
Tampa to Suvarnabhumi flights
Portland to Suvarnabhumi flights
Las Vegas to Suvarnabhumi flights
Burbank to Suvarnabhumi flights
San Francisco to Don Mueang Intl flights
O'Hare Intl to Don Mueang Intl flights
John F Kennedy Intl to Phuket City flights
Raleigh to Suvarnabhumi flights
Nashville to Suvarnabhumi flights
Indianapolis to Suvarnabhumi flights
White Plains to Suvarnabhumi flights
Austin to Suvarnabhumi flights
Cleveland to Suvarnabhumi flights
Salt Lake City to Suvarnabhumi flights
Detroit to Suvarnabhumi flights
San Diego to Suvarnabhumi flights
Newark to Phuket City flights
Philadelphia to Suvarnabhumi flights
Los Angeles to Phuket City flights
LaGuardia to Phuket City flights

Top 5 airlines flying from Washington to Chiang Mai

Discover the top 5 airlines that operate flights from Washington to Chiang Mai. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$673Average$855FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$749Average$833FlexibilityNo cancel feeOn-time70%
DeltaCheapest$822Average$1,385FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$900Average$1,136FlexibilityNo cancel feeOn-time74%
Korean AirCheapest$967Average$1,258FlexibilityNo cancel feeOn-time81%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.