Chiang Mai

$369+ 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CNX
Jul 8 — Jul 151
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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 July 3, 2025.

Round-trip from

$679
(Flightnetwork)

One-way from

$369
(CrystalTravel)

Popular in

June

Cheapest in

March

Average price

$1,133
From Washington to Chiang Mai
One-way flight from Washington to Chiang Mai
Highest demand for flights based on searches. 17% potential increase in price ($208 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).
Average for round-trip flights in July 2025

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 July 3, 2025.

This Flightnetwork deal was found by Cheapflights users on 7/1. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/182:30 pmSEA - CNX
1 stop19h 10mAsiana Airlines
Tue 9/212:45 amCNX - SEA
1 stop25h 45mAsiana Airlines
Deal found 7/1$679
This Ovago deal was found by Cheapflights users on 7/2. 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.
Mon 9/14:30 pmSEA - CNX
2 stops26h 15mMultiple Airlines
Tue 9/168:00 pmCNX - SEA
2 stops32h 25mMultiple Airlines
Deal found 7/2$693
This Gurufare deal was found by Cheapflights users on 7/3. 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.
Sun 8/311:15 amSEA - CNX
1 stop25h 05mSTARLUX Airlines
Thu 11/204:55 pmCNX - SEA
1 stop37h 10mSTARLUX Airlines
Deal found 7/3$720
This oojo deal was found by Cheapflights users on 7/3. 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 7/3$774
This FlightHub deal was found by Cheapflights users on 7/3. 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.
Sat 10/1110:15 amSEA - CNX
1 stop40h 25mSingapore Airlines
Fri 10/1711:15 amCNX - SEA
1 stop35h 30mSingapore Airlines
Deal found 7/3$792
This Korean Air deal was found by Cheapflights users on 7/1. 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 8/185:40 pmSEA - CNX
2 stops38h 15mKorean Air
Wed 9/311:15 pmCNX - SEA
1 stop25h 25mKorean Air
Deal found 7/1$800
This Delta deal was found by Cheapflights users on 7/2. 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.
Thu 11/611:15 amSEA - CNX
1 stop20h 50mDelta
Mon 2/212:15 amCNX - SEA
1 stop28h 05mDelta
Deal found 7/2$828
This oojo deal was found by Cheapflights users on 7/2. 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 9/11:30 amSEA - CNX
1 stop18h 55mEVA Air
Mon 11/1711:50 amCNX - SEA
1 stop21h 20mEVA Air
Deal found 7/2$866
This oojo deal was found by Cheapflights users on 7/3. 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 11/105:30 pmPDX - CNX
2 stops25h 55mChina Airlines
Wed 12/311:25 amCNX - PDX
2 stops26h 54mChina Airlines
Deal found 7/3$895
This Korean Air deal was found by Cheapflights users on 7/1. 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 11/106:30 amPDX - CNX
2 stops25h 35mKorean Air
Tue 12/212:15 amCNX - PDX
2 stops30h 57mKorean Air
Deal found 7/1$934
This oojo deal was found by Cheapflights users on 7/1. 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 10/217:41 pmPDX - CNX
2 stops24h 44mEVA Air
Wed 3/1111:50 amCNX - PDX
2 stops34h 04mEVA Air
Deal found 7/1$999
This Gurufare deal was found by Cheapflights users on 7/3. 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.
Fri 10/316:30 amPDX - CNX
3 stops42h 55mMultiple Airlines
Wed 11/193:35 pmCNX - PDX
2 stops40h 15mMultiple Airlines
Deal found 7/3$1,058

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 July 3, 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

Mon 8/18

2:30 pm-11:40 pm

1 stop19h 10m

Chiang Mai

Tue 9/2

12:45 am-12:30 pm

1 stop25h 45m

$679

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 9/1

4:30 pm-8:45 am

2 stops26h 15m

Chiang Mai

Tue 9/16

8:00 pm-2:25 pm

2 stops32h 25m

$693

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 8/31

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

Thu 11/20

4:55 pm-3:05 pm

1 stop37h 10m

$720

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

$774

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 8/18

5:40 pm-9:55 pm

2 stops38h 15m

Chiang Mai

Wed 9/3

11:15 pm-10:40 am

1 stop25h 25m

$800

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 9/1

1:30 am-10:25 am

1 stop18h 55m

Chiang Mai

Mon 11/17

11:50 am-6:10 pm

1 stop21h 20m

$866

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 11/10

5:30 pm-10:25 am

2 stops25h 55m

Chiang Mai

Wed 12/3

11:25 am-11:19 pm

2 stops26h 54m

$895

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 11/10

6:30 am-11:05 pm

2 stops25h 35m

Chiang Mai

Tue 12/2

12:15 am-4:12 pm

2 stops30h 57m

$934

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 9/1

7:10 am-1:25 pm

2 stops40h 15m

Chiang Mai

Thu 11/20

3:35 pm-2:45 pm

2 stops38h 10m

$951

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 10/21

7:41 pm-10:25 am

2 stops24h 44m

Chiang Mai

Wed 3/11

11:50 am-7:54 am

2 stops34h 04m

$999

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 $1,010). Flying from State of Washington to Chiang Mai in December is currently the most expensive (average of $1,639). 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 July 3, 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.

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 July 3, 2025.
Get a feel of what it's like to fly with STARLUX Airlines, EVA Air, and Korean Air from Washington to Chiang Mai by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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 $369 on Asiana Airlines. Other airlines that offer cheap prices include Delta from $422 and Korean Air from $429 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 $1,010). Flying from State of Washington to Chiang Mai in December is currently the most expensive (average of $1,639). 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

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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.

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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$672Average$853FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$736Average$862FlexibilityNo cancel feeOn-time70%
Singapore AirlinesCheapest$779Average$1,222FlexibilityNo cancel feeOn-time81%
Korean AirCheapest$836Average$1,076FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$865Average$1,038FlexibilityNo cancel feeOn-time74%

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