$421+ 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CNX
Sep 9 — Sep 161
Round-trip
1 adult, Economy
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Find cheap flights from Seattle 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
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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 Seattle to Chiang Mai
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Best
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One-way
Cheapest flights from Seattle to Chiang MaiExplore 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 August 10, 2026.
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 August 10, 2026.
This oojo deal was found by Cheapflights users on 8/7. 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 9/271:15 am -
1 stop19h 05m
Tue 10/1311:20 am -
1 stop21h 55m
Deal found 8/7![China Airlines logo]()
$866
This Korean Air deal was found by Cheapflights users on 8/5. 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.
Wed 11/2511:00 am -
1 stop20h 55m
Wed 12/212:15 am -
1 stop23h 45m
Deal found 8/5![Korean Air logo]()
$869
This Korean Air deal was found by Cheapflights users on 8/10. 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.
Tue 11/244:36 pm -
2 stops39h 19m
Wed 12/212:15 am -
1 stop23h 45m
Deal found 8/10![Korean Air logo]()
$875
This CheapOair deal was found by Cheapflights users on 8/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:55 am -
1 stop18h 25m
Mon 9/1411:20 am -
1 stop22h 25m
Deal found 8/10![China Airlines logo]()
$876
This oojo deal was found by Cheapflights users on 8/6. 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.
Thu 11/511:45 pm -
1 stop25h 15m
Sat 11/145:00 pm -
1 stop37h 05m
Deal found 8/6![STARLUX Airlines logo]()
$879
This Korean Air deal was found by Cheapflights users on 8/7. 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.
Wed 11/1811:00 am -
1 stop20h 55m
Tue 2/1612:15 am -
2 stops29h 32m
Deal found 8/7![Korean Air logo]()
$881
This Air Canada deal was found by Cheapflights users on 8/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:00 pm -
2 stops41h 00m
Tue 10/139:10 pm -
2 stops26h 42m
Deal found 8/7![Multiple Airlines logo]()
$885
This Korean Air deal was found by Cheapflights users on 8/10. 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.
Wed 11/257:15 am -
2 stops24h 40m
Sat 12/512:15 am -
2 stops29h 32m
Deal found 8/10![Korean Air logo]()
$886
This Korean Air deal was found by Cheapflights users on 8/9. 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.
Sat 11/142:49 pm -
2 stops41h 06m
Mon 11/3012:15 am -
1 stop23h 45m
Deal found 8/9![Korean Air logo]()
$887
Best flights from Seattle to Chiang MaiDiscover carefully curated flight deals from Seattle to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
Discover carefully curated flight deals from Seattle to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
This Korean Air deal was found by Cheapflights users on 8/5. 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.
Wed 11/2511:00 am -
1 stop20h 55m
Tue 12/112:15 am -
1 stop23h 45m
Deal found 8/5![Korean Air logo]()
$869
This Korean Air deal was found by Cheapflights users on 8/5. 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.
Thu 11/2611:00 am -
1 stop20h 55m
Tue 12/112:15 am -
1 stop23h 45m
Deal found 8/5![Korean Air logo]()
$869
This Korean Air deal was found by Cheapflights users on 8/10. 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.
Wed 11/2511:00 am -
1 stop20h 55m
Sat 12/512:15 am -
1 stop23h 45m
Deal found 8/10![Korean Air logo]()
$870
This Korean Air deal was found by Cheapflights users on 8/10. 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.
Wed 11/2511:00 am -
1 stop20h 55m
Wed 12/212:15 am -
1 stop23h 45m
Deal found 8/10![Korean Air logo]()
$870
This Korean Air deal was found by Cheapflights users on 8/9. 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.
Tue 11/244:36 pm -
2 stops39h 19m
Tue 12/112:15 am -
1 stop23h 45m
Deal found 8/9![Korean Air logo]()
$875
This Korean Air deal was found by Cheapflights users on 8/10. 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.
Tue 11/244:36 pm -
2 stops39h 19m
Wed 12/212:15 am -
1 stop23h 45m
Deal found 8/10![Korean Air logo]()
$875
This Korean Air deal was found by Cheapflights users on 8/5. 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.
Sun 11/87:16 am -
2 stops24h 39m
Tue 11/1712:15 am -
1 stop23h 45m
Deal found 8/5![Korean Air logo]()
$875
This Korean Air deal was found by Cheapflights users on 8/8. 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.
Wed 1/137:20 am -
2 stops24h 35m
Mon 2/2212:15 am -
2 stops29h 32m
Deal found 8/8![Korean Air logo]()
$886
This Korean Air deal was found by Cheapflights users on 8/5. 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.
Sun 11/17:16 am -
2 stops24h 39m
Wed 11/412:15 am -
2 stops31h 22m
Deal found 8/5![Korean Air logo]()
$886
This Korean Air deal was found by Cheapflights users on 8/8. 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.
Tue 1/57:20 am -
2 stops24h 35m
Sat 2/1312:15 am -
2 stops30h 10m
Deal found 8/8![Korean Air logo]()
$886
This Korean Air deal was found by Cheapflights users on 8/10. 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.
Wed 11/2511:00 am -
1 stop20h 55m
Thu 12/312:15 am -
1 stop23h 45m
Deal found 8/10![Korean Air logo]()
$910
This Korean Air deal was found by Cheapflights users on 8/9. 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.
Wed 11/2511:00 am -
1 stop20h 55m
Fri 12/412:15 am -
1 stop23h 45m
Deal found 8/9![Korean Air logo]()
$910
Last-minute flights from Seattle to Chiang MaiDiscover last-minute flight deals from Seattle to Chiang Mai. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Chiang Mai. Data last updated August 10, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 8/7. 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 8/111:10 am -
1 stop19h 15m
Sun 9/611:35 am -
1 stop22h 05m
Deal found 8/7![EVA Air logo]()
$943
This Justfly.com deal was found by Cheapflights users on 8/6. 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.
Sun 8/232:10 am -
1 stop18h 15m
Wed 9/911:35 am -
1 stop22h 05m
Deal found 8/6![EVA Air logo]()
$904
This oojo deal was found by Cheapflights users on 8/6. 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 8/231:55 am -
1 stop18h 25m
Mon 8/3111:20 am -
1 stop22h 25m
Deal found 8/6![China Airlines logo]()
$909
This FlightHub deal was found by Cheapflights users on 8/6. 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 8/247:20 pm -
2 stops24h 00m
Wed 9/911:30 am -
2 stops36h 35m
Deal found 8/6![Multiple Airlines logo]()
$920
This Mytrip deal was found by Cheapflights users on 8/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:55 am -
2 stops28h 05m
Sun 9/138:00 am -
2 stops25h 45m
Deal found 8/7![Multiple Airlines logo]()
$953
This CheapOair deal was found by Cheapflights users on 8/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:55 am -
1 stop18h 25m
Mon 9/1411:20 am -
1 stop22h 25m
Deal found 8/10![China Airlines logo]()
$876
This oojo deal was found by Cheapflights users on 8/7. 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 9/271:15 am -
1 stop19h 05m
Tue 10/1311:20 am -
1 stop21h 55m
Deal found 8/7![China Airlines logo]()
$866
This oojo deal was found by Cheapflights users on 8/6. 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 9/271:30 am -
1 stop18h 55m
Tue 10/138:00 pm -
2 stops37h 20m
Deal found 8/6![EVA Air logo]()
$957
This Air Canada deal was found by Cheapflights users on 8/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:00 pm -
2 stops41h 00m
Tue 10/139:10 pm -
2 stops26h 42m
Deal found 8/7![Multiple Airlines logo]()
$885
One-way flights from Seattle to Chiang MaiSearch for one-way flight options from Seattle to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
Search for one-way flight options from Seattle to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This Trip.com deal was found by Cheapflights users on 8/9. 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 11/811:00 am -
1 stop20h 55m
Deal found 8/9![Korean Air logo]()
$421
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/511:00 am -
1 stop20h 55m
Deal found 8/9![Korean Air logo]()
$427
This Korean Air deal was found by Cheapflights users on 8/6. 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.
Tue 2/211:00 am -
1 stop20h 55m
Deal found 8/6![Korean Air logo]()
$428
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:35 am -
2 stops45h 20m
Deal found 8/9![Korean Air logo]()
$433
This SmartFares deal was found by Cheapflights users on 8/6. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/211:15 am -
1 stop19h 05m
Deal found 8/6![China Airlines logo]()
$444
This CheapOair deal was found by Cheapflights users on 8/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/271:15 am -
1 stop19h 05m
Deal found 8/10![China Airlines logo]()
$451
This Justfly.com deal was found by Cheapflights users on 8/7. 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.
Sun 8/231:55 am -
1 stop18h 25m
Deal found 8/7![China Airlines logo]()
$455
This Trip.com deal was found by Cheapflights users on 8/7. 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.
Tue 8/2511:00 am -
2 stops30h 25m
Deal found 8/7![Multiple Airlines logo]()
$460
This Trip.com deal was found by Cheapflights users on 8/10. 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 9/1312:10 am -
2 stops32h 40m
Deal found 8/10![Multiple Airlines logo]()
$472
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/511:06 am -
2 stops44h 49m
Deal found 8/9![Multiple Airlines logo]()
$473
Find 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 August 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $844 (Expedia) |
One-way from | $421 (Trip.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,000 |
Cheapflights Fare Finder
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 August 10, 2026.
Use the filters below to find and compare flights from Seattle to Chiang Mai that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Wed 11/25
11:00 am-10:55 pm
1 stop20h 55m
Chiang Mai
Tue 12/1
12:15 am-9:00 am
1 stop23h 45m
$869
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Thu 11/26
11:00 am-10:55 pm
1 stop20h 55m
Chiang Mai
Tue 12/1
12:15 am-9:00 am
1 stop23h 45m
$869
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Wed 11/25
11:00 am-10:55 pm
1 stop20h 55m
Chiang Mai
Sat 12/5
12:15 am-9:00 am
1 stop23h 45m
$870
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Wed 11/25
11:00 am-10:55 pm
1 stop20h 55m
Chiang Mai
Wed 12/2
12:15 am-9:00 am
1 stop23h 45m
$870
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Tue 11/24
4:36 pm-10:55 pm
2 stops39h 19m
Chiang Mai
Tue 12/1
12:15 am-9:00 am
1 stop23h 45m
$875
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Tue 11/24
4:36 pm-10:55 pm
2 stops39h 19m
Chiang Mai
Wed 12/2
12:15 am-9:00 am
1 stop23h 45m
$875
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Sun 11/8
7:16 am-10:55 pm
2 stops24h 39m
Chiang Mai
Tue 11/17
12:15 am-9:00 am
1 stop23h 45m
$875
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Wed 1/13
7:20 am-10:55 pm
2 stops24h 35m
Chiang Mai
Mon 2/22
12:15 am-2:47 pm
2 stops29h 32m
$886
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Sun 11/1
7:16 am-10:55 pm
2 stops24h 39m
Chiang Mai
Wed 11/4
12:15 am-4:37 pm
2 stops31h 22m
$886
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Tue 1/5
7:20 am-10:55 pm
2 stops24h 35m
Chiang Mai
Sat 2/13
12:15 am-3:25 pm
2 stops30h 10m
$886
Showing 1-10 of 19 resultsSorted by cheapest first
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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
SEA-CNX
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 Seattle to Chiang Mai
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 $813). Flying from Seattle to Chiang Mai in December is currently the most expensive (average of $1,662). 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.
How much does it cost to fly round-trip from Seattle to Chiang Mai?
Airfare is typical for this route at the moment.
Seattle to Chiang Mai flights typically cost between $834 and $1,240 in February.The cheapest round-trip price found within the last 5 days was $844 on Korean Air (Feb 2-Feb 15).
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 August 10, 2026.
Peruse reviews from past customers who have flown with EVA Air and China Airlines from Seattle to Chiang Mai to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.3
Crew
8.7
Food
8.1
Boarding
8.4
Overall
8.5
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Comfort
8.3
Crew
8.7
Food
8.1
Boarding
8.4
Overall
8.5
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Comfort
8.3
Crew
8.7
Food
8.1
Boarding
8.4
Overall
8.5
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
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.
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Alternative routes for Seattle to Chiang Mai
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Other flights to Chiang Mai
Explore flights to Chiang Mai departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 10, 2026.
Complete your trip
Complete your trip to Chiang Mai by adding a car rental and/or hotel reservation to your travel itinerary.
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Seattle and Chiang Mai flights
Browse other Seattle and Chiang Mai flight options. Last updated on August 10, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on August 10, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Seattle to Chiang Mai
Discover the top 2 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 August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$771 | Average$856 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$853 | Average$994 | FlexibilityNo cancel fee | On-time74% |