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SEA - CNX

$577 Find cheap flights from Seattle to Chiang Mai

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Chiang Mai departing on 7/11. 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
0 bags
Wed 6/5
Wed 6/12

Search hundreds of travel sites at once for deals on flights to Chiang Mai

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Chiang Mai, 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 Seattle to Chiang Mai, as well as popular online travel agencies
In the last 7 days travelers have searched 42,573,820 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to Chiang Mai (SEA-CNX)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Chiang Mai 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 and deals for you by selecting your travel dates.
Choose your dates
2:20 pm - 11:45 pmSEA-CNX
19h 25m1 stop
12:45 am - 12:45 pmCNX-SEA
26h 00m1 stop
$1,251Asiana Airlines
Find Deal
Mon, Jul 29 - Tue, Aug 13
1:40 am - 10:20 amSEA-CNX
18h 40m1 stop
11:20 am - 8:12 amCNX-SEA
34h 52m2 stops
$1,320
Find Deal
Sun, Jul 28 - Wed, Aug 14
6:40 pm - 1:45 pmSEA-CNX
29h 05m2 stops
11:55 am - 4:45 pmCNX-SEA
42h 50m2 stops
$1,452Turkish Airlines
Find Deal
Sat, May 11 - Sat, May 25
2:10 am - 10:25 amSEA-CNX
18h 15m1 stop
11:35 am - 7:50 pmCNX-SEA
22h 15m1 stop
$1,478EVA Air
Find Deal
Sat, Jul 27 - Thu, Aug 15
2:10 am - 10:25 amSEA-CNX
18h 15m1 stop
11:35 am - 7:50 pmCNX-SEA
22h 15m1 stop
$1,507EVA Air
Find Deal
Mon, Jul 29 - Thu, Aug 15
6:40 pm - 7:10 pmSEA-CNX
34h 30m2 stops
10:10 am - 4:45 pmCNX-SEA
44h 35m2 stops
$1,558Turkish Airlines
Find Deal
Mon, Jun 3 - Mon, Jun 10
2:00 pm - 8:40 pmSEA-CNX
40h 40m2 stops
11:15 pm - 3:41 pmCNX-SEA
30h 26m2 stops
$1,570Delta
Find Deal
Sun, Jul 28 - Wed, Aug 14
9:45 pm - 9:55 pmSEA-CNX
34h 10m2 stops
11:15 pm - 2:05 pmCNX-SEA
28h 50m1 stop
$1,665Delta
Find Deal
Tue, Jul 30 - Thu, Aug 15
12:25 pm - 9:55 pmSEA-CNX
19h 30m1 stop
11:15 pm - 1:55 pmCNX-SEA
28h 40m1 stop
$1,678Korean Air
Find Deal
Sat, May 11 - Sat, May 25
12:25 pm - 9:55 pmSEA-CNX
19h 30m1 stop
11:15 pm - 8:38 pmCNX-SEA
35h 23m2 stops
$1,709Korean Air
Find Deal
Sat, May 11 - Sat, May 25

Flights from Seattle to Chiang Mai - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Chiang Mai 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 Seattle to Chiang Mai?

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Chiang Mai, 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 Seattle to Chiang Mai is April, where tickets cost $1,098 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,819 and $1,642 respectively.

How far in advance should I book a flight from Seattle to Chiang Mai?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Chiang Mai, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Chiang Mai, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 22 days before departure.

Which airlines provide the cheapest flights from Seattle to Chiang Mai?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Seattle to Chiang Mai were found on Asiana Airlines ($1,251) and Turkish Airlines ($1,452). Asiana Airlines proposed the cheapest one-way flight at $695.

Good to know

Low season

April

High season

January

Cheapest flight

$577
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Seattle to Chiang Mai

When to book flights from Seattle to Chiang Mai

Are your dates flexible? Find out the best times to travel from Seattle to Chiang Mai 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 Seattle to Chiang Mai

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

    In the last 3 days, the lowest price for a flight from Seattle to Chiang Mai was $577 for a one-way ticket and $1,251 for a round-trip.

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

    A passport is required to fly from Seattle to Chiang Mai.

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

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

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

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

  • What is the most popular layover when flying to Chiang Mai from Seattle?

    Incheon is the most popular layover city among KAYAK users traveling from Seattle to Chiang Mai.

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

    The two airlines most popular with KAYAK users for flights from Seattle to Chiang Mai are Korean Air and EVA Air. With an average price for the route of $1,202 and an overall rating of 8.5, Korean Air is the most popular choice. EVA Air is also a great choice for the route, with an average price of $1,352 and an overall rating of 8.3.

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

    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 Seattle to Chiang Mai.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chiang Mai from Seattle 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 Seattle to Chiang Mai?

    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 Chiang Mai with an airline and back to Seattle with another airline. Booking your flights between Seattle and CNX 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 Seattle to Chiang Mai?

    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 Chiang Mai from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 4 airlines serving from Seattle to Chiang Mai

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Chiang Mai. 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 Seattle to Chiang Mai? 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.
8.5
Korean AirOverall score based on 1184 reviews
8.2Food
8.6Boarding
8.2Entertainment
8.3Comfort
8.8Crew
Airline reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

10.0 ExcellentAnonymous, Apr 2024IAD - ICN
Read more about Korean Air reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

Great crew, decent food Charging plugs were broken on both seats next to me. Only the USB port was available, and that charges, very, very slowly. Seat was also broken, it would not lock into position when reclining.

Korean Air had great service and the Bibimbap dish was the best airplane food I’ve ever had. It was a long flight so in between the two meals they served customers could get Shin ramen. The flight attendants let my children use a pair of nice headphones for the flight and had earbuds and slippers for all the adults. The flight was long but the time passed by relatively quickly because they have many great shows in their entertainment TV. I watched the BTS Love Yourself and Speak Yourself concerts 💜

not too bad but not too great either. Service on all airlines declined ever since covid. Your Delta Stewardess are not that friendly at all. :-(

You did not put me on a Korean Air flight! so I do not have nothing to say

My flight was diverted to Atlanta and I was not given enough time. I paid my travel on April 23, 2023. It was originally Delta from Norfolk to NY, then Korean Air from NY all the way Philippines which is my final stop. Instead from Atlanta to Korea I flew Delta which is okay. Then Korea to Philippines, I flew Asiana Airlines. What I did not like, Ieagle did not sent me an email that my flight was change and so when I went to check in Wednesday the 10th, at 4:30 a.m they told me my flight was delayed at 6;00 p.m and diverted in Atlanta and I am flying Asiana from Korea to Philippines. I do not appreciate that Kayak or Ieagle chenge our flights 5 times and then last minute change again during my day of flight. I hope that you will not make any changes of my flight o Feb 15th because it has to be the same flight with my husband. That is the reason why we made the arrangements early on.

Wonderful cabin crew!!!!! Food was poor, in flight entertainment was just ok. They need to serve more water on a 15 hour flight--we were dehydrated and kept asking for water.

Going through security a third time to get on the next flight was again utterly ridiculous and unnecessary. We were in a International secure area once again and as far as I'm concerned should not have been put through the gears for absolutely no reason. The United States can get all the information they need from the travel itinerary, there was no need to be forced out of a secure area to personally interview everyone on a connecting flight to find out their US immigration status.

Flight arrived early, fantastic, since it is short flight, no food being served

Always fly with Korean Airlines. Best service great food. Nice and clean as always.

Fast and efficient boarding. Flight was on time. Service was very good for our long flight. First time flying with this airline and I would highly recommend.

Eva Air's Business Class is pretty decent. With the given price, I think that the food can be better.

Pleasant, comfortable, and entertaining. All told, ZERO issues with it. And sadly, so far the flight was WAY more comfortable than the hellhole that is "Lambug Beach Resort" at Badian Beach!

It was a pleasant fly with Eva Air from NYC to Taipei. The crew were friendly and the food was exceeded my expectation.

Eva air is a good airline. The seats on the way to Taipei could have certainly been more comfortable, but all in all it was a pretty good experience.

Boarding is fast and easy for economy class, food was ok baggage policies are good

Overall the flight was what might be expected for a long haul flight to Asia in economy class. The cabin crew was attentive and the food was good. Boarding was fairly fast and easy. The one thing I found frustrating was the EVA app. It is terrible. Trying to do anything on it was almost impossible.

EVA would not help with ticket issue since they were purchased through a travel agency. Even though it was EVA ticket stock. Travel agency Budget Air didn't reissue ticket after airline change which I didn’t learn until trying to checkin on Christmas Day and there was no contact number for the agency to help. I will never use Budget Air to purchase flight again and disappointed in EVA’s refusal to help. Thankfully just under 12 hrs before departure someone from the agency was available to reissue tickets. I was starting to think we would not be flying and the stress trying to resolve was completely unacceptable.

seamless check in/ friendly staff, food is good, always love flying Eva Air

Very uncomfortable and crowded seats in economy. Flight attendant refused request to move to nearby unused seat with more legroom because “It was more money for that seat”. It was also near impossible to reach airline directly by phone. Waits upwards of an hour and not very helpful customer service representatives after long wait. Cannot recommend this airline.

Flight attendants rude, they disappear for almost 3 hours not doing rounds to see what people needed. The laboratories were full of empty water cups, because they never come back to collect them.

The flight attendant, where kind of rude, there where hiding for almost 3 hours, without doing rounds to see if people needed water or pickup the water cups, the toilets were full of water cups, because they never come back to pick them up.

Flew on an Airbus 350-900. Excellent aircraft properly cleaned and serviced. Flight crew was excellent plane departed and arrived on time. The A350 has excellent air circulation far better than the 777. I would recommend Asiana to anyone looking to fly in a clean comfortable environment. This is my second round trip flight from New York to Bangkok via Asiana and I will book Asiana again!

Amazing service and fabulous syaff. Loved the jumbo jet too, comfortable.

I could not choose my seat prior to check in

JetBlue's check-in was great, but there was an in-flight attendant who was very rude and unkind. I didn't realize that the bathrooms were already locked 30 mins prior to landing and needed to use the restroom. Instead of politely asking me to return, she rudely told me, 'NO, bathrooms are locked! Go back to your seat!' The JetBlue flight was more than an hour delay, which made me almost miss my connecting flight with Asiana. I understand the reasoning, but the action they took to get a hold of maintenance was time consuming. It took them more than 30 mins to get a hold of maintenance and for maintenance to get started. The Asiana flight and crew were wonderful, in general. They waited for us who were delayed from the previous flight before they took off and were very kind to take my checked baggage's info. Seats were a little uncomfortable for such long flight, but service and flight attendants were great! However, my 3 checked baggages are missing! They're lost somewhere in the transition. I'm writing this review 3 days after my arrival to the Philippines, and my 3 checked baggages, where my wedding dress is, are all still missing! I and the CEB airport crew have sent multiple emails to both JetBlue and Asiana, and neither has responded to any of our emails. Although, I was able to get in contact with JetBlue's Interline Department who confirmed that the bags were turned over to Asiana without confirmation details.

The full flat bed was not that comfortable, hard and lumpy., too much space wasted with those bulky walls and divisions instead of making the bed 3-4 inches wider. The compartment where you put your feet is like a shoebox, poor design. Toilets of A350 are just too small, sink is too small

Aside from a LOT of turbulence the flight was perfect! The flight crew was superb and the food was delicious!

2 things that really tanked our experience with this trip with Asiana Airline (which used to be among my favorite airlines): 1) The "random" security screening at the boarding gate is crazily thorough (which is completely redundant to the security screening before we went through the security checkpoint before getting into the gate area), and the water was acquired inside of the gate area (from a lounge operated by the Inchon airport). We were asked to take out *EVERY* single items from the carry-on luggage and open up every comtainers / bags / packages to inspect. To add to it, there were two inspection workers there (one seemed to be a trainee and the other seemed to be a trainer), and the trainer worker held a very unfriendly / arrogant attitude towards us. As the youngest member (a minor) of my family was being "screened", the rest of my family wanted to make sure that no inappropriate actions would happen to her. That trainer worker yelled at us and attempted to use rude body language (waving her hands) and facial expression to ask us to stay away. 2) The luggage handling at the destination was really *REALLY* bad. Among my 25+ years of travel experiences, I'm going to have to say that this was the worst luggage experience where we didn't lose our luggage. Our flight was scheduled to land 12:45pm, and landed around 1pm. 15mins delay in landing is absolutely normal. Deplane process took a bit longer than usual flight (we waited for around 20mins, after arriving at the gate, before people were able to actually leave the plane). However, the luggage took another *2 HOURS* to arrive at the baggage claim carousel. This is insane. What's worse is, due to the delay in luggage, the flurry of passengers from our flight collided with 3 other incoming flights. The US border / custom line was like the longest Disneyland attraction line winding through the entire arrival hall and around all the baggage claim carousels (like at least a thousand people). I've never seen anything like that at SeaTec airport (US border control), period. The luggage claim experience really tanked our trust and overall impression for Asiana Airline's Seattle airport ground operational effectiveness and efficiency. This has to change in order for them to remain relevant / in-business with increased competitions from Korean Air and other Asia-based airlines.

The crew attended to my needs and the foods served are delivious.

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Book cheap flights from Seattle to Chiang Mai

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Chiang Mai found on KAYAK in the last 72 hours.
7/11Thu
2 stops
37h 25mSEA-CNX
$577
7/11Thu
1 stopAsiana Airlines
19h 25mSEA-CNX
$695
7/10Wed
2 stops
24h 21mSEA-CNX
$700
7/11Thu
3 stops
31h 35mSEA-CNX
$714
7/10Wed
1 stopEVA Air
18h 15mSEA-CNX
$762
7/7Sun
2 stopsDelta
37h 00mSEA-CNX
$863
7/8Mon
1 stopEVA Air
18h 15mSEA-CNX
$953
7/7Sun
1 stopDelta
18h 55mSEA-CNX
$959
7/10Wed
3 stopsCathay Pacific
36h 15mSEA-CNX
$1,448
5/24Fri
3 stopsJapan Airlines
62h 27mSEA-CNX
$2,023

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Last minute flights from Seattle to Chiang Mai

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Chiang Mai that are departing in the next 10 days.
5/11Sat
multi-stop
36h 40mSEA-CNX
5/25Sat
multi-stop
54h 30mCNX-SEA
$1,557
5/11Sat
multi-stopQatar Airways
55h 15mSEA-CNX
6/1Sat
multi-stopQatar Airways
54h 30mCNX-SEA
$1,621
5/11Sat
multi-stopKorean Air
19h 30mSEA-CNX
5/25Sat
multi-stopKorean Air
28h 40mCNX-SEA
$1,678
5/11Sat
multi-stopKorean Air
19h 30mSEA-CNX
5/25Sat
multi-stopKorean Air
35h 23mCNX-SEA
$1,709
5/11Sat
multi-stopKorean Air
19h 30mSEA-CNX
6/1Sat
multi-stopKorean Air
28h 45mCNX-SEA
$1,759
5/10Fri
multi-stopDelta
31h 15mSEA-CNX
5/25Sat
multi-stopDelta
28h 40mCNX-SEA
$1,964
5/10Fri
multi-stopDelta
31h 15mSEA-CNX
5/25Sat
multi-stopDelta
33h 41mCNX-SEA
$1,975
5/11Sat
multi-stopAsiana Airlines
19h 25mSEA-CNX
5/31Fri
multi-stopAsiana Airlines
26h 00mCNX-SEA
$2,028
5/10Fri
multi-stopEVA Air
18h 35mSEA-CNX
6/1Sat
multi-stopEVA Air
21h 55mCNX-SEA
$5,364
5/10Fri
multi-stopEVA Air
18h 35mSEA-CNX
5/25Sat
multi-stopEVA Air
21h 55mCNX-SEA
$6,727

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Seattle - Chiang Mai Flights

Departure:

Seattle (SEA)United States

Destination:

Chiang Mai (CNX)Thailand

Return flight deals:

Chiang Mai - Seattle

Cabin classes:

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