CNX - SEA

$471 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 6/22. 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
1 adult, Economy

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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Cheap Flights from Chiang Mai to Seattle (CNX-SEA)

 
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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chiang Mai to Seattle

Wed, Jul 9 - Fri, Jul 11
Asiana Airlines Logo
12:05 am - 12:45 pmCNX-SEA
26h 40m1 stop
Asiana Airlines Logo
2:30 pm - 11:40 pmSEA-CNX
19h 10m1 stop
$820Asiana Airlines
Find Deal
Thu, Jul 10 - Thu, Jul 10
EVA Air Logo
11:35 am - 7:50 pmCNX-SEA
22h 15m1 stop
EVA Air Logo
1:10 am - 10:25 amSEA-CNX
19h 15m1 stop
$974EVA Air
Find Deal
Thu, Jul 10 - Thu, Jul 10
EVA Air Logo
11:35 am - 7:50 pmCNX-SEA
22h 15m1 stop
EVA Air Logo
1:10 am - 1:45 pmSEA-CNX
22h 35m2 stops
$1,031EVA Air
Find Deal
Mon, Aug 18 - Fri, Oct 17
Asiana Airlines Logo
12:45 am - 12:45 pmCNX-SEA
26h 00m1 stop
Asiana Airlines Logo
2:15 pm - 11:40 pmSEA-CNX
19h 25m1 stop
$1,039Asiana Airlines
Find Deal
Tue, Aug 19 - Sun, Oct 12
China Airlines Logo
11:20 am - 7:45 pmCNX-SEA
22h 25m1 stop
China Airlines Logo
1:10 am - 10:20 amSEA-CNX
19h 10m1 stop
$1,056China Airlines
Find Deal
Mon, Aug 18 - Fri, Oct 17
Delta Logo
11:15 pm - 10:15 pmCNX-SEA
37h 00m2 stops
Delta Logo
12:25 pm - 9:55 pmSEA-CNX
19h 30m1 stop
$1,067Delta
Find Deal
Tue, Aug 19 - Sat, Oct 11
China Airlines Logo
11:20 am - 7:45 pmCNX-SEA
22h 25m1 stop
China Airlines Logo
1:10 am - 7:10 pmSEA-CNX
28h 00m2 stops
$1,232China Airlines
Find Deal
Mon, Aug 18 - Wed, Oct 15
Korean Air Logo
11:15 pm - 2:01 pmCNX-SEA
28h 46m1 stop
Korean Air Logo
6:15 am - 9:55 pmSEA-CNX
25h 40m2 stops
$1,380Korean Air
Find Deal
Wed, Aug 20 - Sat, Oct 11
Korean Air Logo
11:15 pm - 2:01 pmCNX-SEA
28h 46m1 stop
Korean Air Logo
12:25 pm - 9:55 pmSEA-CNX
19h 30m1 stop
$1,778Korean Air
Find Deal
Mon, Aug 18 - Sat, Oct 11
Delta Logo
11:15 pm - 2:01 pmCNX-SEA
28h 46m1 stop
Delta Logo
12:25 pm - 9:55 pmSEA-CNX
19h 30m1 stop
$1,836Delta
Find Deal
Useful Info

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 $2,096 and $1,325 respectively.

Good to know

Low seasonJanuary
High seasonJune
Cheapest flight$471
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 10% lower on average.
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 $471 for a one-way ticket and $820 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, Star Alliance, and oneworld 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 $974 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 $829 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.

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 1202 reviews
8.6Crew
8.1Food
8.3Comfort
8.0Entertainment
8.4Boarding
Airline reviews

I have never heard of EVA air before but I am so happy my wife and I were able to flight on their planes twice. Everything on these flights just felt better than their competitors. As someone with longer legs any bit of extra leg spaces is appreciated. The different options for food and drinks were also a plus. They were extra careful to make sure my wife's eating restrictions were taken care for. They had a before take off and landing announcements on the built in tablets for each seat and it gave out information that was very helpful. Such as what and how to declare your items in the specific country you landed in, any odd items that may be illegal to bring it (and even the reasoning why) and any other information you might need to make your post flight experience better. Oh and the seats were more comfortable, had more ability to lean and the headrest was much better for flight sleeping. The only downside was there were "forced" ads on the tablet at take off for maybe 5-10 minutes but honestly, this flight was the cheapest option and had all the benefits listed above that is such an easy trade off. Im keeping an eye out for EVA air going forward.

10.0 ExcellentAnonymous, May 2025TPE - SEA
Read more EVA Air reviews

I have never heard of EVA air before but I am so happy my wife and I were able to flight on their planes twice. Everything on these flights just felt better than their competitors. As someone with longer legs any bit of extra leg spaces is appreciated. The different options for food and drinks were also a plus. They were extra careful to make sure my wife's eating restrictions were taken care for. They had a before take off and landing announcements on the built in tablets for each seat and it gave out information that was very helpful. Such as what and how to declare your items in the specific country you landed in, any odd items that may be illegal to bring it (and even the reasoning why) and any other information you might need to make your post flight experience better. Oh and the seats were more comfortable, had more ability to lean and the headrest was much better for flight sleeping. The only downside was there were "forced" ads on the tablet at take off for maybe 5-10 minutes but honestly, this flight was the cheapest option and had all the benefits listed above that is such an easy trade off. Im keeping an eye out for EVA air going forward.

I have never heard of EVA air before but I am so happy my wife and I were able to flight on their planes twice. Everything on these flights just felt better than their competitors. As someone with longer legs any bit of extra leg spaces is appreciated. The different options for food and drinks were also a plus. They were extra careful to make sure my wife's eating restrictions were taken care for. They had a before take off and landing announcements on the built in tablets for each seat and it gave out information that was very helpful. Such as what and how to declare your items in the specific country you landed in, any odd items that may be illegal to bring it (and even the reasoning why) and any other information you might need to make your post flight experience better. The only downside was there were "forced" ads on the tablet at take off for maybe 5-10 minutes but honestly, this flight was the cheapest option and had all the benefits listed above that is such an easy trade off. Im keeping an eye out for EVA air going forward.

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.

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.

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

Not many people, so you can lay down on two seats

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

They were very accommodating of a dietary issue. Nice movie & tv selections. Non-stop helped get through a very long (15 hr) flight

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

The boarding process for Korean airlines is very straightforward and easy. You've never met such helpful and friendly people. The food was great and the entertainment options were excellent too. My teenage boys found programs they wanted to watch while I had fun watching a full season of the Last Man - the Blind Investigator (Japanese), which my wife enjoyed too. My only complaint was that it takes a very long time to taxi at ICN (20 minutes) and the pilot had to hold at the gate for 10 minutes after our scheduled departure time, which meant we got to Seattle 27 minutes late. Luckily I had a long enough connection to make my next flight, but just barely.

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

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

Staff always with a smile and very helpful with my mom who has mobility issues.

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

It was all perfect and very pleasant for such long flights

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.

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.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.