$607+ 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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CNX
Jun 12 — Jun 191
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
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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 May 13, 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 May 13, 2026.
This Justfly.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:15 am
SEA
- CNX
1 stop40h 20m
Singapore Airlines
Wed 10/1411:30 am
CNX
- SEA
1 stop35h 15m
Singapore Airlines
Deal found 5/11![Singapore Airlines logo]()
$840
This Justfly.com deal was found by Cheapflights users on 5/11. 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.
Thu 10/110:15 am
SEA
- CNX
1 stop40h 20m
Singapore Airlines
Fri 10/2311:30 am
CNX
- SEA
1 stop35h 15m
Singapore Airlines
Deal found 5/11![Singapore Airlines logo]()
$846
This Justfly.com deal was found by Cheapflights users on 5/11. 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 9/810:15 am
SEA
- CNX
1 stop40h 20m
Singapore Airlines
Tue 9/225:35 pm
CNX
- SEA
1 stop53h 10m
Singapore Airlines
Deal found 5/11![Singapore Airlines logo]()
$928
This Delta deal was found by Cheapflights users on 5/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:25 am
SEA
- CNX
2 stops44h 30m
Delta
Tue 11/1712:15 am
CNX
- SEA
1 stop26h 36m
Delta
Deal found 5/9![Delta logo]()
$976
This Delta deal was found by Cheapflights users on 5/11. 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.
Sat 11/711:25 am
SEA
- CNX
2 stops44h 30m
Delta
Tue 11/1012:15 am
CNX
- SEA
1 stop26h 36m
Delta
Deal found 5/11![Delta logo]()
$1,016
This Justfly.com deal was found by Cheapflights users on 5/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:45 am
SEA
- CNX
1 stop40h 00m
Singapore Airlines
Wed 11/1812:05 pm
CNX
- SEA
1 stop34h 05m
Singapore Airlines
Deal found 5/9![Singapore Airlines logo]()
$1,017
This FlightHub deal was found by Cheapflights users on 5/11. 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.
Fri 10/309:45 am
SEA
- CNX
1 stop40h 00m
Singapore Airlines
Fri 11/134:45 pm
CNX
- SEA
1 stop29h 25m
Singapore Airlines
Deal found 5/11![Singapore Airlines logo]()
$1,018
This oojo deal was found by Cheapflights users on 5/13. 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
SEA
- CNX
1 stop19h 05m
China Airlines
Tue 10/1311:20 am
CNX
- SEA
1 stop21h 55m
China Airlines
Deal found 5/13![China Airlines logo]()
$1,030
This Justfly.com deal was found by Cheapflights users on 5/11. 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.
Mon 11/212:10 am
SEA
- CNX
1 stop19h 15m
China Airlines
Thu 11/1211:25 am
CNX
- SEA
1 stop21h 45m
China Airlines
Deal found 5/11![China Airlines logo]()
$1,034
This Kiwi.com deal was found by Cheapflights users on 5/11. 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.
Sun 10/41:15 am
SEA
- CNX
1 stop19h 05m
China Airlines
Thu 10/1511:20 am
CNX
- SEA
1 stop21h 55m
China Airlines
Deal found 5/11![China Airlines logo]()
$1,056
This BusinessClass deal was found by Cheapflights users on 5/11. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:10 am
SEA
- CNX
1 stop19h 15m
China Airlines
Tue 11/1011:25 am
CNX
- SEA
1 stop21h 45m
China Airlines
Deal found 5/11![China Airlines logo]()
$1,059
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 May 13, 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 May 13, 2026.
This FlightHub deal was found by Cheapflights users on 5/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/85:05 pm
SEA
- CNX
2 stops36h 05m
Multiple Airlines
Mon 6/158:00 pm
CNX
- SEA
2 stops30h 25m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,198
This Qatar Airways deal was found by Cheapflights users on 5/12. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/174:25 pm
SEA
- CNX
2 stops28h 50m
Qatar Airways
Tue 7/78:00 pm
CNX
- SEA
2 stops30h 25m
Qatar Airways
Deal found 5/12![Qatar Airways logo]()
$1,469
This China Airlines deal was found by Cheapflights users on 5/11. 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.
Sun 7/261:55 am
SEA
- CNX
1 stop18h 25m
China Airlines
Sun 8/211:55 am
CNX
- SEA
2 stops21h 50m
China Airlines
Deal found 5/11![China Airlines logo]()
$1,573
This FlightHub deal was found by Cheapflights users on 5/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/252:10 am
SEA
- CNX
2 stops27h 00m
EVA Air
Sun 8/910:10 am
CNX
- SEA
2 stops23h 40m
EVA Air
Deal found 5/8![EVA Air logo]()
$1,577
This Justfly.com deal was found by Cheapflights users on 5/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2810:15 am
SEA
- CNX
1 stop40h 20m
Singapore Airlines
Sat 8/812:30 pm
CNX
- SEA
1 stop34h 15m
Singapore Airlines
Deal found 5/10![Singapore Airlines logo]()
$1,678
This Orbitz deal was found by Cheapflights users on 5/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/11:55 am
SEA
- CNX
1 stop18h 25m
Multiple Airlines
Sun 8/1611:20 am
CNX
- SEA
2 stops37h 09m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,408
This Qatar Airways deal was found by Cheapflights users on 5/12. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/184:25 pm
SEA
- CNX
2 stops36h 45m
Qatar Airways
Fri 7/311:55 am
CNX
- SEA
2 stops38h 30m
Qatar Airways
Deal found 5/12![Qatar Airways logo]()
$1,473
This Mytrip deal was found by Cheapflights users on 5/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:45 am
SEA
- CNX
2 stops33h 00m
Multiple Airlines
Thu 6/184:55 pm
CNX
- SEA
2 stops31h 12m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,481
This Qatar Airways deal was found by Cheapflights users on 5/12. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/145:05 pm
SEA
- CNX
2 stops28h 10m
Qatar Airways
Sat 7/48:00 pm
CNX
- SEA
2 stops30h 25m
Qatar Airways
Deal found 5/12![Qatar Airways logo]()
$1,534
This oojo deal was found by Cheapflights users on 5/12. 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.
Sat 6/271:50 am
SEA
- CNX
1 stop18h 35m
EVA Air
Sat 8/88:00 pm
CNX
- SEA
2 stops37h 50m
EVA Air
Deal found 5/12![EVA Air logo]()
$1,833
This Qatar Airways deal was found by Cheapflights users on 5/9. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/205:05 pm
SEA
- CNX
2 stops36h 05m
Qatar Airways
Wed 5/278:00 pm
CNX
- SEA
3 stops41h 39m
Qatar Airways
Deal found 5/9![Qatar Airways logo]()
$1,740
Last-minute flights from Seattle to Chiang MaiDiscover last-minute flight deals from Seattle to Chiang Mai. Data last updated May 13, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Chiang Mai. Data last updated May 13, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 5/11. 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.
Tue 5/121:50 am
SEA
- CNX
1 stop18h 35m
EVA Air
Tue 5/2611:35 am
CNX
- SEA
1 stop21h 55m
EVA Air
Deal found 5/11![EVA Air logo]()
$1,225
This Kiwi.com deal was found by Cheapflights users on 5/11. 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.
Tue 5/121:50 am
SEA
- CNX
2 stops21h 55m
EVA Air
Sat 5/2311:35 am
CNX
- SEA
1 stop21h 15m
EVA Air
Deal found 5/11![EVA Air logo]()
$1,243
This FlightHub deal was found by Cheapflights users on 5/11. 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.
Tue 5/1212:50 am
SEA
- CNX
2 stops44h 25m
Multiple Airlines
Tue 5/2611:35 am
CNX
- SEA
2 stops38h 55m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$1,257
This IEagle deal was found by Cheapflights users on 5/11. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1412:50 am
SEA
- CNX
2 stops22h 55m
EVA Air
Thu 5/2111:35 am
CNX
- SEA
1 stop21h 15m
EVA Air
Deal found 5/11![EVA Air logo]()
$1,222
This Trip.com deal was found by Cheapflights users on 5/11. 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.
Mon 6/85:05 pm
SEA
- CNX
2 stops28h 15m
Multiple Airlines
Mon 6/152:30 pm
CNX
- SEA
2 stops35h 55m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$1,173
This Mytrip deal was found by Cheapflights users on 5/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/810:30 am
SEA
- CNX
3 stops33h 15m
Multiple Airlines
Sun 6/147:00 am
CNX
- SEA
3 stops46h 15m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$1,270
This IEagle deal was found by Cheapflights users on 5/12. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/115:05 pm
SEA
- CNX
2 stops28h 10m
Multiple Airlines
Thu 6/1811:55 am
CNX
- SEA
2 stops38h 30m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,189
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 May 13, 2026.
Search for one-way flight options from Seattle to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated May 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Sun 8/212:10 am
SEA
- CNX
3 stops41h 15m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$607
This oojo deal was found by Cheapflights users on 5/12. 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 8/21:15 am
SEA
- CNX
1 stop25h 05m
STARLUX Airlines
Deal found 5/12![STARLUX Airlines logo]()
$614
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Sun 6/1411:00 pm
SEA
- CNX
2 stops29h 40m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$689
This Mytrip deal was found by Cheapflights users on 5/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:45 am
SEA
- CNX
2 stops33h 00m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$696
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 6/115:05 pm
SEA
- CNX
2 stops36h 05m
Qatar Airways
Deal found 5/12![Qatar Airways logo]()
$697
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Tue 6/911:20 am
SEA
- CNX
2 stops41h 20m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$707
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Tue 6/1611:00 pm
SEA
- CNX
3 stops52h 55m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$753
This FlightHub deal was found by Cheapflights users on 5/12. 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.
Thu 6/184:25 pm
SEA
- CNX
2 stops36h 45m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$767
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 May 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $840 (Justfly.com) |
One-way from | $607 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,078 |
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 May 13, 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 - CNX
SEACNX
Seattle/Tacoma Intl
Mon 6/8
5:05 pm-7:10 pm
2 stops36h 05m
Chiang Mai
Mon 6/15
8:00 pm-12:25 pm
2 stops30h 25m
$1,198
SeattleChiang Mai
SEA - CNX
SEACNX
Seattle/Tacoma Intl
Sat 8/1
1:55 am-10:20 am
1 stop18h 25m
Chiang Mai
Sun 8/16
11:20 am-10:29 am
2 stops37h 09m
$1,408
SeattleChiang Mai
SEA - CNX
SEACNX
Seattle/Tacoma Intl
Wed 6/17
4:25 pm-11:15 am
2 stops28h 50m
Chiang Mai
Tue 7/7
8:00 pm-12:25 pm
2 stops30h 25m
$1,469
SeattleChiang Mai
SEA - CNX
SEACNX
Seattle/Tacoma Intl
Thu 6/18
4:25 pm-7:10 pm
2 stops36h 45m
Chiang Mai
Fri 7/3
11:55 am-12:25 pm
2 stops38h 30m
$1,473
SeattleChiang Mai
SEA - CNX
SEACNX
Seattle/Tacoma Intl
Tue 6/2
10:45 am-9:45 am
2 stops33h 00m
Chiang Mai
Thu 6/18
4:55 pm-10:07 am
2 stops31h 12m
$1,481
SeattleChiang Mai
SEA - CNX
SEACNX
Seattle/Tacoma Intl
Sun 6/14
5:05 pm-11:15 am
2 stops28h 10m
Chiang Mai
Sat 7/4
8:00 pm-12:25 pm
2 stops30h 25m
$1,534
Quickest round-trip
SeattleChiang Mai
SEA - CNX
SEACNX
Seattle/Tacoma Intl
Sun 7/26
1:55 am-10:20 am
1 stop18h 25m
Chiang Mai
Sun 8/2
11:55 am-7:45 pm
2 stops21h 50m
$1,573
SeattleChiang Mai
SEA - CNX
SEACNX
Seattle/Tacoma Intl
Sat 7/25
2:10 am-7:10 pm
2 stops27h 00m
Chiang Mai
Sun 8/9
10:10 am-7:50 pm
2 stops23h 40m
$1,577
SeattleChiang Mai
SEA - CNX
SEACNX
Seattle/Tacoma Intl
Sun 6/28
10:15 am-4:35 pm
1 stop40h 20m
Chiang Mai
Sat 8/8
12:30 pm-8:45 am
1 stop34h 15m
$1,678
SeattleChiang Mai
SEA - CNX
SEACNX
Seattle/Tacoma Intl
Wed 5/20
5:05 pm-7:10 pm
2 stops36h 05m
Chiang Mai
Wed 5/27
8:00 pm-11:39 pm
3 stops41h 39m
$1,740
Showing 1-10 of 22 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 May.
| 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 |
- 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 $810). Flying from Seattle to Chiang Mai in December is currently the most expensive (average of $1,728). 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?
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 May 13, 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.
Crew
8.6
Entertainment
8.0
Comfort
8.3
Overall
8.5
Food
8.1
Boarding
8.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
TPE - SFO
Crew
8.6
Entertainment
8.0
Comfort
8.3
Overall
8.5
Food
8.1
Boarding
8.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
TPE - SFO
Crew
8.6
Entertainment
8.0
Comfort
8.3
Overall
8.5
Food
8.1
Boarding
8.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
TPE - SFO
Crew
8.6
Entertainment
8.0
Comfort
8.3
Overall
8.5
Food
8.1
Boarding
8.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
TPE - SFO
Crew
8.6
Entertainment
8.0
Comfort
8.3
Overall
8.5
Food
8.1
Boarding
8.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
TPE - SFO
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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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 May 13, 2026.
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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 May 13, 2026.
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Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Seattle to Chiang Mai
Discover the top 4 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 May 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$418 | Average$837 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$675 | Average$953 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$763 | Average$844 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$853 | Average$966 | FlexibilityNo cancel fee | On-time74% |