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Chiang Mai

$422+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CNX
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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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 April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$860
(oojo)

One-way from

$526
(Gotogate)

Popular in

June

Cheapest in

March

Average price

$865
Provider with most accurate pricing for Seattle/Tacoma Intl-Chiang Mai flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Chiang Mai flights.
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From Washington to Chiang Mai
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One-way flight from Washington to Chiang Mai
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Highest demand for flights based on searches. 24% potential increase in price ($349 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($70 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 17, 2025.

This oojo deal was found by Cheapflights users on 4/17. 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.
Sun 8/311:40 amSEA - CNX
1 stop18h 40mChina Airlines
Tue 9/1611:20 amCNX - SEA
1 stop22h 00mChina Airlines
Deal found 4/17$742
This Trip.com deal was found by Cheapflights users on 4/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/121:10 amSEA - CNX
2 stops22h 30mMultiple Airlines
Mon 10/206:30 amCNX - SEA
2 stops26h 50mMultiple Airlines
Deal found 4/16$831
This oojo deal was found by Cheapflights users on 4/17. 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 9/12:15 pmSEA - CNX
1 stop19h 25mAsiana Airlines
Mon 9/1512:45 amCNX - SEA
1 stop25h 45mAsiana Airlines
Deal found 4/17$832
This oojo deal was found by Cheapflights users on 4/17. 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.
Sun 11/212:10 amSEA - CNX
1 stop19h 25mEVA Air
Mon 11/1711:50 amCNX - SEA
1 stop21h 20mEVA Air
Deal found 4/17$884
This Korean Air deal was found by Cheapflights users on 4/16. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/12:00 pmSEA - CNX
2 stops41h 55mKorean Air
Wed 11/1912:15 amCNX - SEA
1 stop23h 45mKorean Air
Deal found 4/16$887
This Gurufare deal was found by Cheapflights users on 4/17. 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.
Tue 10/710:15 amSEA - CNX
1 stop40h 25mSingapore Airlines
Tue 10/145:40 pmCNX - SEA
1 stop53h 05mSingapore Airlines
Deal found 4/17$888
This oojo deal was found by Cheapflights users on 4/16. 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 11/107:45 pmPDX - CNX
2 stops23h 40mChina Airlines
Wed 12/311:25 amCNX - PDX
2 stops26h 54mChina Airlines
Deal found 4/16$914
This Justfly.com deal was found by Cheapflights users on 4/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:00 amPDX - CNX
2 stops27h 05mKorean Air
Tue 11/1112:15 amCNX - PDX
2 stops28h 04mKorean Air
Deal found 4/15$960
This Ovago deal was found by Cheapflights users on 4/17. 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.
Tue 9/2310:00 amPDX - CNX
3 stops33h 20mMultiple Airlines
Tue 9/303:30 pmCNX - PDX
3 stops41h 16mMultiple Airlines
Deal found 4/17$967
This Trip.com deal was found by Cheapflights users on 4/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/301:15 amSEA - CNX
1 stop25h 05mSTARLUX Airlines
Tue 5/135:20 pmCNX - SEA
1 stop36h 50mSTARLUX Airlines
Deal found 4/17$972
This FlightHub deal was found by Cheapflights users on 4/16. 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 5/184:30 pmSEA - CNX
2 stops36h 40mQatar Airways
Tue 5/2710:10 amCNX - SEA
2 stops40h 35mQatar Airways
Deal found 4/16$1,004
This Fareboom deal was found by Cheapflights users on 4/15. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/28:45 pmPDX - CNX
2 stops22h 50mEVA Air
Sun 11/2311:50 amCNX - PDX
2 stops27h 03mEVA Air
Deal found 4/15$1,059

Cheapflights Fare Finder

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 April 17, 2025.
Use the filters below to find and compare flights from Washington to Chiang Mai that are best for you.

Fly from

Washington

Fly to

Chiang Mai

Route

Depart

Return

Price

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 8/31

1:40 am-10:20 am

1 stop18h 40m

Chiang Mai

Tue 9/16

11:20 am-7:20 pm

1 stop22h 00m

$742

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 10/12

1:10 am-1:40 pm

2 stops22h 30m

Chiang Mai

Mon 10/20

6:30 am-7:20 pm

2 stops26h 50m

$831

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

$832

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 9/1

2:00 pm-9:55 pm

2 stops41h 55m

Chiang Mai

Wed 11/19

12:15 am-9:00 am

1 stop23h 45m

$887

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 10/7

10:15 am-4:40 pm

1 stop40h 25m

Chiang Mai

Tue 10/14

5:40 pm-8:45 am

1 stop53h 05m

$888

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 10/14

1:30 am-10:25 am

1 stop18h 55m

Chiang Mai

Mon 10/20

11:35 am-7:30 pm

1 stop21h 55m

$892

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 9/23

7:30 pm-10:20 am

2 stops48h 50m

Chiang Mai

Tue 9/30

11:20 am-11:59 pm

2 stops26h 39m

$942

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 9/23

10:00 am-9:20 am

3 stops33h 20m

Chiang Mai

Tue 9/30

3:30 pm-6:46 pm

3 stops41h 16m

$967

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Wed 4/30

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

Tue 5/13

5:20 pm-4:10 pm

1 stop36h 50m

$972

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 9/13

9:10 am-9:55 pm

2 stops22h 45m

Chiang Mai

Sun 9/21

11:15 pm-1:19 pm

2 stops28h 04m

$999

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 25 results
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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.

Cheapflights Insights

Everything you need to know about your flight from Washington to Chiang Mai

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

Currently, April is the cheapest month in which you can book a flight from State of Washington to Chiang Mai (average of $1,016). 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 April 17, 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 April 17, 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
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

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
154 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

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
1,177 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

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
1,064 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

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
729 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

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
8.2
Very good
438 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

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 $552 on Singapore Airlines. Other airlines that offer cheap prices include STARLUX Airlines from $560 and Qatar Airways from $562 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, April is the cheapest month in which you can book a flight from State of Washington to Chiang Mai (average of $1,016). 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

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Alternative routes for Washington to Chiang Mai

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Washington to Chiang Mai

Discover the top 4 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$679Average$859FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$749Average$834FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$886Average$1,125FlexibilityNo cancel feeOn-time74%
Korean AirCheapest$967Average$1,157FlexibilityNo cancel feeOn-time81%

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