CNX - SEA

$519 Find Cheap Flights from Chiang Mai to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chiang Mai to Seattle departing on 5/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chiang Mai to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chiang Mai to Seattle, as well as popular online travel agencies
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Cheap Flights from Chiang Mai to Seattle

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chiang Mai to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Chiang Mai to Seattle

KAYAK's recommended round-trip deals from the most popular airlines that fly from Chiang Mai to Seattle.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Korean Air Logo
11:15 pm - 10:50 amCNX-SEA
25h 35m1 stop
Korean Air Logo
12:50 pm - 9:55 pmSEA-CNX
19h 05m1 stop
$805Korean Air
Find Deal
Fri, Jun 6 - Tue, Sep 9
EVA Air Logo
11:35 am - 7:30 pmCNX-SEA
21h 55m1 stop
EVA Air Logo
1:30 am - 10:25 amSEA-CNX
18h 55m1 stop
$817EVA Air
Find Deal
Fri, Jun 6 - Mon, Sep 8
Delta Logo
11:15 pm - 1:35 pmCNX-SEA
28h 20m1 stop
Delta Logo
12:55 pm - 9:55 pmSEA-CNX
19h 00m1 stop
$826Delta
Find Deal
Sun, May 25 - Mon, Jun 30
Korean Air Logo
11:15 pm - 10:40 amCNX-SEA
25h 25m1 stop
Korean Air Logo
1:20 pm - 9:55 pmSEA-CNX
18h 35m1 stop
$830Korean Air
Find Deal
Tue, May 13 - Sun, Jul 13
Asiana Airlines Logo
12:45 am - 12:30 pmCNX-SEA
25h 45m1 stop
Asiana Airlines Logo
2:30 pm - 11:40 pmSEA-CNX
19h 10m1 stop
$856Asiana Airlines
Find Deal
Wed, May 14 - Thu, Jul 10
China Airlines Logo
11:20 am - 7:30 pmCNX-SEA
22h 10m1 stop
China Airlines Logo
1:10 am - 10:20 amSEA-CNX
19h 10m1 stop
$863China Airlines
Find Deal
Sat, May 31 - Mon, Jun 23
EVA Air Logo
11:55 am - 7:30 pmCNX-SEA
21h 35m2 stops
EVA Air Logo
12:30 am - 10:25 amSEA-CNX
19h 55m1 stop
$875EVA Air
Find Deal
Fri, Jun 6 - Mon, Sep 8
Delta Logo
11:15 pm - 1:35 pmCNX-SEA
28h 20m1 stop
Delta Logo
12:55 pm - 9:55 pmSEA-CNX
19h 00m1 stop
$900Delta
Find Deal
Tue, May 13 - Tue, Jul 8
Asiana Airlines Logo
12:45 am - 12:30 pmCNX-SEA
25h 45m1 stop
Asiana Airlines Logo
2:30 pm - 11:40 pmSEA-CNX
19h 10m1 stop
$902Asiana Airlines
Find Deal
Tue, May 13 - Thu, Jul 3
China Airlines Logo
11:20 am - 7:30 pmCNX-SEA
22h 10m1 stop
China Airlines Logo
1:40 am - 10:20 amSEA-CNX
18h 40m1 stop
$944China Airlines
Find Deal
Tue, May 13 - Mon, Jul 7

KAYAK's insights & trends for Chiang Mai to Seattle flights

Get data-powered insights and trends into flights from Chiang Mai to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Chiang Mai to Seattle?

The average price of all round-trip flights from Chiang Mai to Seattle clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Seattle on a Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Chiang Mai to Seattle. For your return ticket, we recommend flying on a Tuesday and avoiding Fridays for the best deals.

What is the cheapest month to fly from Chiang Mai to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chiang Mai to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Chiang Mai to Seattle is November, where tickets cost $797 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $1,229 and $1,175 respectively.

Good to know

Low season

January

High season

September

Cheapest flight

$519
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from Chiang Mai to Seattle

When to book flights from Chiang Mai to Seattle

Are your dates flexible? Find out the best times to travel from Chiang Mai to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Chiang Mai to Seattle

  • What is the cheapest flight from Chiang Mai to Seattle?

    In the last 3 days, the lowest price for a flight from Chiang Mai to Seattle was $519 for a one-way ticket and $805 for a round-trip.

  • Do I need a passport to fly between Chiang Mai and Seattle?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Chiang Mai and on arrival in Seattle.

  • Which airports will I be using when flying from Chiang Mai to Seattle?

    Chiang Mai airport is called Chiang Mai and the only airport in Seattle is Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from Chiang Mai to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Chiang Mai to Seattle?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Chiang Mai and Seattle, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Chiang Mai to Seattle, EVA Air or Korean Air?

    The two airlines most popular with KAYAK users for flights from Chiang Mai to Seattle are EVA Air and Korean Air. With an average price for the route of $1,089 and an overall rating of 8.4, EVA Air is the most popular choice. Korean Air is also a great choice for the route, with an average price of $915 and an overall rating of 8.4.

  • How does KAYAK find such low prices on flights from Chiang Mai to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chiang Mai to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chiang Mai to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Chiang Mai is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chiang Mai to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Chiang Mai with another airline. Booking your flights between Chiang Mai and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chiang Mai to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Chiang Mai up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 3 airlines serving from Chiang Mai to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Chiang Mai to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chiang Mai to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
EVA AirOverall score based on 1170 reviews
8.4Boarding
8.1Food
8.3Comfort
8.6Crew
8.0Entertainment
Airline reviews

Sub sandwhich for a snack through mid flight and giving a bottle water was a good idea

8.0 ExcellentAnonymous, Mar 2025TPE - IAH
Read more EVA Air reviews

Sub sandwhich for a snack through mid flight and giving a bottle water was a good idea

The flight attendants should be nicer, on my first flight I told them I’d prefer a veggie meal sometimes and then she began to lecture me about it, it was a late flight and I wanted an easy digestion meal so that I can sleep quickly. The meals were abit odd, breakfast on my last flight had eggs, oatmeal and fish, did not taste good at all, strange combination. The economy seats are very tight and crowded, not comfortable at all. Overall for the price I paid I thought I was going to get more.

seats are pitched well. you don't feel too tight.

For the price, it was better than other airlines; quality of food and service was very good.

Movie selection was not as good as recent flights I've taken (EVA and other airlines).

Great but I am not sure why I was placed in zone 4 for boarding despite being an Infinity Member??? Can you explain online. Thanks

Clean plane, friendly crew, mostly on-time departure. Negativo since there were no snacks offered. Cold drinks only was fine due to turbulence, but nothing to eat? Really?

Except for crying babies all was ok although the movie selection wasn't the best.

The staff was marvelous. The entertainment options were terrible, old or 2nd rate movies. I was unable to entertain myself for 18 hours-it made it seem even longer. Note: I thought about upgrading but your information about what was included was unclear. Are the seats bigger? Are there current moves? What kind of food do you get? Would the upgrade compare to Delta? Just saying the upgrade is better didn’t convince me and I regret not flying Delta.

Plane is new and I was upgraded to first class so all was great.

Flight delayed going to Korea. No free WiFi. Other than that everything else is were good. I would love to fly with Korea airline again

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

My second flight wasn't better than the first one. And this is 14 hours trip, crew came out only to offer food and the choices was poor. This food choices are good for Asian people but not for westerners. The breakfast kind thing was a corn sausage really disgusting. The air-conditioned blower really blow high and cold, turn out on my arrival to feel seek, that makes the trip uncomfortable. The crew didn't not really come out during the trip to offer drinks or snacks. No fruits available. Very poor service

long flights are difficult but the crew and amenities made it a very good experience

Our seat row plus one ahead and behind we're completely overlooked during beverage service...

I loved everything, I was just a little confused on my bag allowance. When I checked in it said I was allowed 2 check in bags, but when I got there they said I was only allowed 1 so I had to pay an additional 200 dollars! Other then that everything was great! I would love to use your Airlines again when I fly out to Manila again in late May, however I want to be able to have 2 bags included this time lol 😆

Need to have space for Cary on when traveler boarding any zone

everything was fine, would have liked better food but it was warm, great choices for movies

the water for tea could have been hot, entertainment was awful, lots of old movies and TV shows

The carry on baggage was collected before boarding without further information where the passengers can collect them . When the flight arrived at Tan son Nhat airport, it was very complicate to find the luggage

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Two meals were served on this flight; one was a repeat of the meal I had had on the flight immediately preceding this one, which was bad enough I didn't even try it. Drinks were very limited. All I wanted was water, and on a 10.5 hour flight, I was given 3 cups of about 3 ounces each.

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Drinks were very limited. All I wanted was water, and on a 4 hour flight, I was given 2 cups of about 3 ounces each.

We took business class, It was comfortable and I was able to sleep.

Everything was perfect. A flight attendant even brought me snacks after I declined food due to my desire to force myself to follow the destination time zone.

Only process that my luggage didn’t make it to my destination because of short connection but I understand

The boarding process was good. The toilet could be better maintained.

This has been the worst experience I've ever had. We arrived to Ho Chi Minh Airport and were supposed to get our Asiana ticket from the transfer counter as we came with a different airline. However, the staff at the transfer counter were not helpful and kept giving us different information. We were first told by Asiana airlines staff we had to wait 2 hours so they could print out and give us our tickets, then someone else told us we had to wait 3hrs, someone told us "I don't know, just go sit and wait and we will tell you later." This was at a place in the Ho Chi Minh airport that had no coffee or food shops, nothing, just immigration (to enter Vietnam with a Vietnam Visa) and security (to transfer into the gates) but we needed our printed boarding pass to go through. It wasn't until we demanded to speak to a supervisor as our flight time was 1hr away because they kept telling us "there's alot of time left for your international flight, we will get your tickets later" we still had to wait around 20minutes for the "Supervisor" to give us our tickets. I would NOT recommend Asiana Airlines, especially if going thru Ho Chi Minh Airport as they are not helpful. (We almost missed our flight, due to their lazyness and incompetence of printing our tickets) I would suggest Asiana Airlines to have a Machine in the transfer area so passengers can easily print out their boarding passes themselves and save some money by not hiring incompetent staff that can't do a simple task such as printing a boarding pass.

Great service. They could offer vegetarian food and do more to reduce waste.

I like the food, the crew and everything.!!! Except for the delay in our flight.

Great service and comfortable seats. The first meal was excellent but the second meal was only satisfactory

Everything you need to know for your flight from Chiang Mai to Seattle

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