$407+ Cheap flights from Seattle (SEA) to Chiang Mai (CNX)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CNX
Oct 25 — Nov 11
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
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 Seattle to Chiang Mai
Cheapest
Best
Last-minute
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 September 25, 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 September 25, 2026.
This Delta deal was found by Cheapflights users on 9/24. 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.
Mon 11/912:30 pm -
1 stop19h 15m
Sun 11/2212:20 am -
1 stop26h 31m
Deal found 9/24![Delta logo]()
$847
This Korean Air deal was found by Cheapflights users on 9/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:00 am -
1 stop20h 45m
Tue 11/1712:20 am -
1 stop23h 45m
Deal found 9/20![Korean Air logo]()
$850
This Korean Air deal was found by Cheapflights users on 9/24. 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 11/95:52 pm -
2 stops37h 53m
Sun 11/2212:20 am -
1 stop23h 45m
Deal found 9/24![Korean Air logo]()
$856
This FlightHub deal was found by Cheapflights users on 9/21. 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 9/271:30 am -
1 stop18h 55m
Tue 10/1311:35 am -
1 stop21h 05m
Deal found 9/21![EVA Air logo]()
$880
This Trip.com deal was found by Cheapflights users on 9/23. 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 12/111:00 am -
1 stop20h 45m
Sun 12/1312:20 am -
1 stop28h 50m
Deal found 9/23![Korean Air logo]()
$893
This Air Canada deal was found by Cheapflights users on 9/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:40 am -
2 stops23h 55m
Tue 12/89:10 pm -
2 stops36h 12m
Deal found 9/20![Multiple Airlines logo]()
$894
This SmartFares deal was found by Cheapflights users on 9/23. 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.
Sun 11/2912:10 am -
1 stop19h 15m
Thu 4/111:20 am -
1 stop21h 55m
Deal found 9/23![China Airlines logo]()
$898
This Gotogate deal was found by Cheapflights users on 9/23. 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.
Wed 10/2111:45 am -
1 stop32h 00m
Wed 10/287:40 pm -
1 stop28h 05m
Deal found 9/23![Cathay Pacific logo]()
$900
This Korean Air deal was found by Cheapflights users on 9/24. 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 11/2612:10 am -
1 stop31h 35m
Sun 1/2412:20 am -
1 stop23h 45m
Deal found 9/24![Korean Air logo]()
$901
This Korean Air deal was found by Cheapflights users on 9/21. 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 11/47:16 am -
2 stops24h 29m
Fri 11/1312:20 am -
1 stop23h 45m
Deal found 9/21![Korean Air logo]()
$905
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 September 25, 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 September 25, 2026.
This Delta deal was found by Cheapflights users on 9/24. 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.
Mon 11/912:30 pm -
1 stop19h 15m
Sun 11/2212:20 am -
1 stop26h 31m
Deal found 9/24![Delta logo]()
$847
This Korean Air deal was found by Cheapflights users on 9/24. 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 11/95:52 pm -
2 stops37h 53m
Sun 11/2212:20 am -
1 stop23h 45m
Deal found 9/24![Korean Air logo]()
$856
This China Airlines deal was found by Cheapflights users on 9/24. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/221:10 am -
1 stop19h 15m
Thu 3/2511:25 am -
1 stop21h 45m
Deal found 9/24![China Airlines logo]()
$921
This Korean Air deal was found by Cheapflights users on 9/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:16 am -
2 stops24h 29m
Tue 11/1712:20 am -
1 stop23h 45m
Deal found 9/20![Multiple Airlines logo]()
$975
This Korean Air deal was found by Cheapflights users on 9/21. 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 11/47:16 am -
2 stops24h 29m
Fri 11/1312:20 am -
1 stop23h 45m
Deal found 9/21![Korean Air logo]()
$905
This Korean Air deal was found by Cheapflights users on 9/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/111:00 am -
1 stop20h 45m
Mon 12/712:20 am -
1 stop23h 45m
Deal found 9/20![Korean Air logo]()
$923
This Korean Air deal was found by Cheapflights users on 9/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/187:20 am -
2 stops24h 25m
Wed 3/1712:20 am -
2 stops28h 27m
Deal found 9/20![Korean Air logo]()
$939
This Korean Air deal was found by Cheapflights users on 9/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/87:20 am -
2 stops24h 25m
Sat 3/1312:20 am -
2 stops28h 27m
Deal found 9/20![Korean Air logo]()
$979
Last-minute flights from Seattle to Chiang MaiDiscover last-minute flight deals from Seattle to Chiang Mai. Data last updated September 25, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Chiang Mai. Data last updated September 25, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 9/21. 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 9/271:30 am -
1 stop18h 55m
Tue 10/1311:35 am -
1 stop21h 05m
Deal found 9/21![EVA Air logo]()
$880
This FlightHub deal was found by Cheapflights users on 9/21. 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 9/271:15 am -
1 stop19h 05m
Tue 10/1311:55 am -
2 stops21h 20m
Deal found 9/21![Multiple Airlines logo]()
$934
This oojo deal was found by Cheapflights users on 9/22. 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 10/61:15 am -
1 stop24h 50m
Thu 10/155:20 pm -
1 stop36h 50m
Deal found 9/22![STARLUX Airlines logo]()
$926
This Mytrip deal was found by Cheapflights users on 9/22. 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.
Mon 10/191:15 am -
2 stops30h 35m
Tue 10/277:05 am -
2 stops26h 05m
Deal found 9/22![Multiple Airlines logo]()
$957
This oojo deal was found by Cheapflights users on 9/22. 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 10/2011:45 am -
1 stop32h 00m
Tue 10/2710:35 am -
1 stop37h 10m
Deal found 9/22![Cathay Pacific logo]()
$917
This Gotogate deal was found by Cheapflights users on 9/23. 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.
Wed 10/2111:45 am -
1 stop32h 00m
Wed 10/287:40 pm -
1 stop28h 05m
Deal found 9/23![Cathay Pacific logo]()
$900
This Delta deal was found by Cheapflights users on 9/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:30 pm -
1 stop19h 15m
Wed 11/1812:20 am -
1 stop26h 31m
Deal found 9/20![Delta logo]()
$919
This Korean Air deal was found by Cheapflights users on 9/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:16 am -
2 stops25h 29m
Wed 11/1812:20 am -
1 stop28h 50m
Deal found 9/20![Korean Air logo]()
$928
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 September 25, 2026.
Search for one-way flight options from Seattle to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.
This Trip.com deal was found by Cheapflights users on 9/23. 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.
Fri 2/198:40 am -
2 stops47h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$407
This Delta deal was found by Cheapflights users on 9/23. 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.
Mon 11/912:30 pm -
1 stop19h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Delta logo]()
$435
This Mytrip deal was found by Cheapflights users on 9/21. 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.
Mon 11/912:10 am -
1 stop31h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Korean Air logo]()
$436
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Sat 11/78:15 am -
3 stops57h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$438
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Wed 11/48:54 am -
3 stops56h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$439
This Korean Air deal was found by Cheapflights users on 9/21. 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 11/810:19 pm -
2 stops33h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Korean Air logo]()
$441
This Trip.com deal was found by Cheapflights users on 9/23. 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.
Thu 2/1812:10 am -
1 stop19h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![China Airlines logo]()
$457
This Traveloka deal was found by Cheapflights users on 9/23. 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 Traveloka is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/711:00 am -
1 stop20h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Korean Air logo]()
$482
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 September 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $846 (Delta) |
One-way from | $407 (Trip.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,048 |
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 7,457,451 searches. Data last updated September 25, 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
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Mon 11/30
12:10 am-10:45 pm
1 stop31h 35m
Chiang Mai
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$495
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Mon 2/1
12:10 am-10:45 pm
1 stop31h 35m
Chiang Mai
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$495
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Sat 11/7
2:30 pm-10:45 pm
2 stops41h 15m
Chiang Mai
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$506
Quickest round-trip
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Sat 10/24
11:35 am-10:45 pm
1 stop21h 10m
Chiang Mai
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$533
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Sat 10/24
2:19 pm-2:20 pm
2 stops58h 01m
Chiang Mai
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$597
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Mon 11/9
12:30 pm-10:45 pm
1 stop19h 15m
Chiang Mai
Sun 11/22
12:20 am-11:51 am
1 stop26h 31m
$847
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Mon 11/9
5:52 pm-10:45 pm
2 stops37h 53m
Chiang Mai
Sun 11/22
12:20 am-9:05 am
1 stop23h 45m
$856
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Wed 11/4
7:16 am-10:45 pm
2 stops24h 29m
Chiang Mai
Fri 11/13
12:20 am-9:05 am
1 stop23h 45m
$905
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Mon 3/22
1:10 am-10:25 am
1 stop19h 15m
Chiang Mai
Thu 3/25
11:25 am-7:10 pm
1 stop21h 45m
$921
SeattleChiang Mai
SEA Seattle/Tacoma Intl - CNX Chiang Mai
SEACNX
Seattle/Tacoma Intl
Tue 12/1
11:00 am-10:45 pm
1 stop20h 45m
Chiang Mai
Mon 12/7
12:20 am-9:05 am
1 stop23h 45m
$923
Showing 1-10 of 13 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 September.
| 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
How far ahead should I book a flight from Seattle to Chiang Mai?
To ensure you get the cheapest price possible for a flight from Seattle to Chiang Mai, you should look to book at least 34 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 $808). Flying from Seattle 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.
How much does it cost to fly round-trip from Seattle to Chiang Mai?
Airfare is below average for this route at the moment.
Seattle to Chiang Mai flights typically cost between $916 and $1,120 in November.The cheapest round-trip price found within the last 5 days was $847 on Delta (Nov 9-Nov 22).
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 September 25, 2026.
Peruse reviews from past customers who have flown with EVA Air,Korean Air, andChina 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
Entertainment
8.0
Food
8.1
Overall
8.5
Boarding
8.4
Crew
8.7
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Comfort
8.3
Entertainment
8.0
Food
8.1
Overall
8.5
Boarding
8.4
Crew
8.7
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Comfort
8.3
Entertainment
8.0
Food
8.1
Overall
8.5
Boarding
8.4
Crew
8.7
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Comfort
8.3
Entertainment
8.0
Food
8.1
Overall
8.5
Boarding
8.4
Crew
8.7
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.
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
Chiang Mai flight routes
Complete your trip
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Alternative routes for Seattle to Chiang Mai
See prices for flight routes from nearby airports that may be better suited for you.
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 September 25, 2026.
Complete your trip
Complete your trip to Chiang Mai by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Chiang Mai by cabin class
Find flights from Seattle to Chiang Mai, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Chiang Mai flights
Browse other Seattle and Chiang Mai flight options. Last updated on September 25, 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 September 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Seattle to Chiang Mai
Discover the top 3 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 7,457,451 searches. Data last updated September 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$752 | Average$869 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$797 | Average$875 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$820 | Average$1,032 | FlexibilityNo cancel fee | On-time74% |