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Chiang Mai

$439+ Cheap flights from Seattle (SEA) 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
mar. 2/25
mar. 3/4
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Chiang Mai are usually found in March or October, booked 69 days in advance, depart on a Tuesday or Monday and return on a Saturday

Cheap flight deals from Seattle to Chiang Mai

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Chiang Mai (CNX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated febrero 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.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Chiang Mai flights.
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From Seattle/Tacoma Intl to Chiang Mai
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One-way flight from Seattle/Tacoma Intl to Chiang Mai
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Highest demand for flights based on searches. 25% potential increase in price ($364 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($69 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Seattle to Chiang Mai

Cheapest flights from Seattle to Chiang Mai
Explore the most affordable flight options available from Seattle to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 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.
lun. 5/267:10 amSEA - CNX
2 stops40h 15mChina Eastern
mié. 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.
dom. 3/231:10 amSEA - CNX
1 stop19h 15mChina Airlines
mar. 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.
lun. 3/2412:00 pmSEA - CNX
1 stop36h 05mKorean Air
mié. 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.
lun. 4/72:15 pmSEA - CNX
1 stop19h 25mAsiana Airlines
mar. 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.
mar. 5/64:30 pmSEA - CNX
2 stops26h 50mMultiple Airlines
mar. 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.
mar. 4/1512:30 amSEA - CNX
1 stop19h 55mEVA Air
jue. 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.
mié. 4/161:15 amSEA - CNX
1 stop25h 05mSTARLUX Airlines
sáb. 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.
dom. 3/1611:35 amSEA - CNX
1 stop36h 30mDelta
mié. 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.
jue. 11/68:45 amSEA - CNX
1 stop41h 05mSingapore Airlines
lun. 11/175:50 pmCNX - SEA
1 stop28h 20mSingapore Airlines
Deal found 2/19$891
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.
jue. 4/174:30 pmSEA - CNX
2 stops28h 45mQatar Airways
sáb. 5/38:00 pmCNX - SEA
2 stops54h 45mQatar Airways
Deal found 2/20$1,066

Find flights from Seattle to Chiang Mai within your budget

Customize your flight search to find flights from Seattle 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 febrero 20, 2025.

Fly from

Seattle

Fly to

Chiang Mai

Route

Depart

Return

Price

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

lun. 5/26

7:10 am-1:25 pm

2 stops40h 15m

Chiang Mai

mié. 6/4

2:55 pm-5:00 pm

2 stops40h 05m

$764

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

dom. 3/23

1:10 am-10:25 am

1 stop19h 15m

Chiang Mai

mar. 4/1

11:20 am-7:30 pm

1 stop22h 10m

$804

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

lun. 3/24

12:00 pm-2:05 pm

1 stop36h 05m

Chiang Mai

mié. 4/2

11:15 pm-10:40 am

1 stop25h 25m

$838

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

lun. 4/7

2:15 pm-11:40 pm

1 stop19h 25m

Chiang Mai

mar. 4/22

12:45 am-12:30 pm

1 stop25h 45m

$842

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

mar. 5/6

4:30 pm-9:20 am

2 stops26h 50m

Chiang Mai

mar. 5/13

8:00 pm-2:25 pm

2 stops32h 25m

$851

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

mar. 4/15

12:30 am-10:25 am

1 stop19h 55m

Chiang Mai

jue. 5/1

11:35 am-7:30 pm

1 stop21h 55m

$859

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

mié. 4/16

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

sáb. 5/3

5:20 pm-4:10 pm

1 stop36h 50m

$865

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

dom. 3/16

11:35 am-2:05 pm

1 stop36h 30m

Chiang Mai

mar. 3/25

3:20 pm-2:40 pm

1 stop37h 20m

$877

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

jue. 4/17

4:30 pm-11:15 am

2 stops28h 45m

Chiang Mai

sáb. 5/3

8:00 pm-12:45 pm

2 stops54h 45m

$1,066

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

dom. 3/23

1:05 am-4:15 pm

1 stop25h 10m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 18 results
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Compare providers for flights from Seattle to Chiang Mai

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Chiang Mai in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
oojoPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Chiang Mai flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Chiang Mai flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Chiang Mai flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Chiang Mai flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Chiang Mai flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Seattle 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 Seattle to Chiang Mai

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

How far ahead should I book a flight from Seattle to Chiang Mai?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Chiang Mai. Price data was last updated on February 14, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Chiang Mai, you should look to book at least 69 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to Chiang Mai?

Currently, February is the cheapest month in which you can book a flight from Seattle to Chiang Mai (average of $1,041). Flying from Seattle 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 SEA to CNX?

Find hourly flight availability from Seattle 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 febrero 20, 2025.

It’s optimal to fly from Seattle to Chiang Mai in the morning. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight in the afternoon.

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 febrero 20, 2025.
Peruse reviews from past customers who have flown with STARLUX Airlines, EVA Air and Korean Air from Seattle to Chiang Mai to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Overall

9.1

Boarding

9.1

Entertainment

9.1

Food

9.0

Comfort

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
140 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Overall

9.1

Boarding

9.1

Entertainment

9.1

Food

9.0

Comfort

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
1,200 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Overall

9.1

Boarding

9.1

Entertainment

9.1

Food

9.0

Comfort

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
1,037 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Overall

9.1

Boarding

9.1

Entertainment

9.1

Food

9.0

Comfort

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
8.3
Very good
446 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Overall

9.1

Boarding

9.1

Entertainment

9.1

Food

9.0

Comfort

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
727 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Crew

9.3

Overall

9.1

Boarding

9.1

Entertainment

9.1

Food

9.0

Comfort

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 Seattle 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 are the cheapest airlines flying from Seattle to Chiang Mai round-trip?

    According to our current data, China Airlines ($804), Korean Air ($838), and Asiana Airlines ($842) offers the cheapest pricing from Seattle to Chiang Mai. Users have found that China Airlines is 24% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Seattle to Chiang Mai one-way?

    The cheapest airline one-way is STARLUX Airlines, with whom users have recently found tickets for as low as $439. However, be on the lookout for offers from Asiana Airlines and Qatar Airways, as they are both options that can get you from Seattle to Chiang Mai for a low price.

  • Where are the most common layover locations when flying from Seattle to Chiang Mai?

    Most of the time, Seattle to Chiang Mai flights that have layovers will stop in Seoul.

  • What are some popular things to do or see while on a layover in Seoul?

    Namdaemun Market, Myeongdong Cathedral, and Dongdaemun Market are the most popular attractions in Seoul if you're in need of something to do during your layover. Namdaemun Market, Myeongdong Cathedral, and Dongdaemun Market can be visited by traveling about 29.8 mi, 30.4 mi, and 31.6 mi respectively from Incheon Intl. Those looking to explore during their layover in Seoul can rent a car from Incheon Intl for about $45 per day.

  • Where are the least popular layover locations for Seattle to Chiang Mai flights?

    The least popular layover on flights from Seattle to Chiang Mai is Taipei City.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Chiang Mai?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Chiang Mai (average of $1,041). Flying from Seattle 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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Top 5 airlines flying from Seattle to Chiang Mai

Discover the top 5 airlines that operate flights from Seattle 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 febrero 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%
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