$283 Find Cheap Flights from Seattle to Thailand

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 Thailand departing on 11/27. 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

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Best Thailand Flight Deals from Seattle

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Bangkok
Bangkok1 stop$540
Phuket City
Phuket City1 stop$592
Chiang Mai
Chiang Mai1 stop$679
Ko Samui
Ko Samui2 stops$1,039
Krabi
Krabi2 stops$1,017
Bangkok
Bangkok1 stop$540
Phuket City
Phuket City1 stop$592
Chiang Mai
Chiang Mai1 stop$679
Ko Samui
Ko Samui2 stops$1,039
Krabi
Krabi2 stops$1,017

Cheap Flights from Seattle to Thailand

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Thailand 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 Seattle to Thailand

Fri, Sep 12 - Wed, Nov 12
Singapore Airlines Logo
10:15 am - 5:25 pmSEA-BKK
41h 10m1 stop
Singapore Airlines Logo
9:10 pm - 7:10 amBKK-SEA
25h 00m1 stop
$540Singapore Airlines
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Thu, Oct 30 - Thu, Nov 6
Singapore Airlines Logo
9:45 am - 6:45 pmSEA-BKK
43h 00m1 stop
Singapore Airlines Logo
8:00 pm - 7:10 amBKK-SEA
26h 10m1 stop
$564Singapore Airlines
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Mon, Sep 8 - Sun, Oct 19
Asiana Airlines Logo
2:15 pm - 10:55 amSEA-BKK
30h 40m1 stop
Asiana Airlines Logo
1:20 am - 12:30 pmBKK-SEA
25h 10m1 stop
$679Asiana Airlines
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Mon, Sep 1 - Mon, Sep 15
Asiana Airlines Logo
2:15 pm - 11:40 pmSEA-CNX
19h 25m1 stop
Asiana Airlines Logo
12:45 am - 12:30 pmCNX-SEA
25h 45m1 stop
$679Asiana Airlines
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Mon, Aug 18 - Sun, Aug 31
ANA Logo
10:00 am - 4:35 amSEA-BKK
28h 35m2 stops
ANA Logo
1:55 pm - 2:25 pmBKK-SEA
38h 30m1 stop
$760ANA
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Tue, Oct 28 - Sun, Nov 16
China Airlines Logo
1:10 am - 4:45 pmSEA-BKK
25h 35m1 stop
China Airlines Logo
2:35 am - 6:15 pmBKK-SEA
30h 40m1 stop
$762China Airlines
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Mon, Sep 1 - Wed, Oct 1
China Airlines Logo
1:40 am - 9:45 amSEA-BKK
18h 05m1 stop
China Airlines Logo
2:40 am - 7:20 pmBKK-SEA
30h 40m1 stop
$764China Airlines
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Tue, Jul 8 - Tue, Jul 15
ANA Logo
1:45 pm - 4:35 amSEA-BKK
24h 50m2 stops
ANA Logo
9:35 am - 6:36 pmBKK-SEA
23h 01m2 stops
$767ANA
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Wed, Nov 5 - Sun, Nov 16
EVA Air Logo
12:10 am - 11:40 pmSEA-BKK
32h 30m1 stop
EVA Air Logo
2:15 am - 6:10 pmBKK-SEA
30h 55m1 stop
$837EVA Air
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Mon, Sep 1 - Mon, Nov 17
EVA Air Logo
1:30 am - 10:25 amSEA-CNX
18h 55m1 stop
EVA Air Logo
11:50 am - 6:10 pmCNX-SEA
21h 20m1 stop
$865EVA Air
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Useful Info

KAYAK's insights & trends for Seattle to Thailand flights

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

What is the cheapest month to fly from Seattle to Thailand?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Thailand, 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 Thailand is February, when tickets cost $811 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,286 and $1,195 respectively.

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

The average price of all round-trip flights from Seattle to Thailand clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Seattle to Thailand, look for departures on Tuesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Thailand, Wednesday is the cheapest day to fly and Thursday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Thailand, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Thailand, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.


Good to know

Low seasonMay
High seasonJanuary
Cheapest flight$283
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Seattle to Bangkok Suvarnabhumi Airport

FAQs - booking Thailand flights

  • Are there onsite hotels at Bangkok Airports?

    There are multiple onsite hotels in both Bangkok airports where you can spend some quality time during a layover or spend the night if you are landing late. If you are landing at BKK, you can consider making reservations at the Novotel Suvarnabhumi Airport Hotel, which is a 5-minute walk from the airport. On the other hand, at DMK, you can spend thenight at Sleep Box by Miracle, situated in terminal 2.

  • Which is the most ideal ground transportation in Bangkok?

    When you land in Bangkok, you should opt for car rental services if you want the freedom to explore the city. DMK has multiple car rental agencies such as SIXT, Budget, Hertz, Avis, National and Chic. The car rental booths are located in terminals 1 and 2 DMK. On the other hand, at BKK, you will find rental car agencies, including Europcar, Hertz, Avis, Chic, National, Bizcar and Thai, located in Gate 8 near the passenger terminal 8.

  • Are there any family services at SEA?

    SEA offers exceptional family services that parents or guardians flying through the airport can take advantage of with their kids. The airport features a kids’ play area located between Gate A and the central terminal. Nursing mothers can also access private nursing rooms at the airport’s main terminal.

  • What amenities and services can I have access to at SEA?

    While at SEA, you can enjoy a live music performance from Experience the City Music. Alternatively, you can explore the impressive and eclectic collection of modern sculpture, painting, glass, photography and sound art.

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

    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 Thailand.

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

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

    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 from Seattle to Thailand with an airline and back with another airline.

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

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

  • What is the cheapest time of day to fly to Thailand?

    The cheapest time of day to fly to Thailand is generally in the morning, when round-trip flights cost $986 on average. Morning departures are around 6% cheaper than evening flights, on average. The most expensive time of day to fly to Thailand is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,081.

Top tips for finding cheap flights to Thailand

  • If you are flying from Seattle to Thailand, ensure that you arrive at the airport at least 3 hours before your scheduled flight departure time. As such, you will have enough time to go through the immigration, get your boarding pass and arrive at your departure terminal without risking missing your flight. Alternatively, you can check in online through your airline website.
  • Seattle Tacoma International Airport (SEA) has several parking options for passengers who wish to leave their cars at the airport while flying from Seattle to Thailand. The airport features both onsite and offsite parking lots. Therefore, you can opt for the offsite parking lot, which is more affordable than the onsite parking lots, if you plan on an extended stay. The onsite parking lots are located at the terminal direct on the upper floors.
  • Upon your arrival at Suvarnabhumi International Airport (BKK) and looking for specific information, you don’t need to worry. The airport features multiple information booths with friendly staff that are always ready to assist. The information desks are located in the arrivals and departure areas.
  • Don Mueang International Airport (DMK) is equipped with shower facilities that passengers using the airport can utilize after a long flight from Seattle. The shower amenities are located in Miracle Lounge in the Domestic departures terminal 2. Charges may apply, so ensure that you confirm with the management before using the amenities.
  • SEA offers unique services for passengers with reduced mobility. If you are flying through the airport, you can have access to wheelchair services and extra assistance. However, for easy access to these services, you need to call your airline prior to your flight date, informing them of what you might need. On the other hand, DMK and BKK have wheelchair-accessible washrooms, parking lots and elevators.

Top 5 airlines serving from Seattle to Thailand

 
Need help choosing which airline to fly with from Seattle to Thailand? 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
8.1Food
8.4Boarding
8.0Entertainment
8.3Comfort
8.6Crew
Airline reviews

The food from Los Angeles to Taipei made me throw up. The flight is also not comfort. But the staffs are very friendly and nice.

8.0 ExcellentAnonymous, Jun 2025LAX - TPE
Read more EVA Air reviews

The food from Los Angeles to Taipei made me throw up. The flight is also not comfort. But the staffs are very friendly and nice.

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.

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

I appreciate the email reminders for online check-in which made my entry to the lines less stressful. The flight was on schedule and on time. The baording staff were proactively helpful and approachable. The airplane inflight food, entertainment and comfies as well as provisions are excellent even in the economy seating. The airline transfer was smooth and easy! Luggage safe and intact! Thank you EVA airline for making my trip a reliable safe and comfortable experience.

Very smooth flight. Superb crew, great food and service. Slept most of the way. Excellent airline.

I was sleep when they brought the food. They had put a note on my seat. There was no food when I asked for food later. There was just one main meal served in this 14 hours flight. They offered me sandwich with ham which I don’t eat since I am pescatarian. Long story short I had to wait to get to TPE to get something to eat. I am extremely disappointed from the service. I have been flying EVA since I was 1 year old. Perhaps no more EVA for me. Seems EVA glorious day is long gone

Excellent food. Good service. Crammed Premium Economy seats. I Asked to change seats during check in. They told me the flight was fully booked. But on board I saw empty seats where I could have been easily relocated.

Good. Please add a non- applicable category to your questions.

The app was awful. No accurate info. Paying for internet is a negative (Delta is free). The crew was very nice for the most part although you are not guaranteed to get good service. Some crew would ignore requests for things as simple as a cup of water if you were sleeping when the first serving was made. Food was great. Male crew member was exceptionally kind and responsive.

It was a good flight. I would highly recommend it to family and friends.

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!

This flight was a superior flight in all regards. Extremely pleasant experience.

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

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

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

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 food on this flight from NRT to ICN was average. The staff were very friendly, but the flight took about 60 minutes longer than it should have because the pilot was only flying at 330mph instead of 500-550. Not sure what the reason is for that, but it meant for a much longer flight.

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

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

Staff was so nice and very helpful with directions aswell!

Most relaxing long distance flight I have been on. And I have flown on many.

It was our first time flying with China Airlines and had a very nice experience. The airline staff & crews both on the ground and air were very nice. Food on the plane was very good. Will recommend it to family and friends.

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

I don’t think I’ll be flying them again. Tight seats, no flowing air or air nozzles that you can turn air on you, for those who could have motion sickness this would be your worst nightmare. The pilot was great and experienced (which is what you want when flying 12 hours) overall I’m thankful knowledgeable pilots!

Very routh cabin crew food is only 2 meals for 13 hours fry with them They should get better training how to service good super routh language and talking with customer

staff are super nice and effiecient! It was a very comfortable and relaxing flight

When I booked a premium economy ticket. I then had to pay $100+ to book my seat.

Boarding could have been a little bit better but other than that it was a pretty good experience. I think because of the stowaway to Paris France recently they are being extra diligent about boarding passes at the gate. But they boarded the back of the plane first, and that's something I really think needs to start in the USA.

The crew was amazing, really friendly and efficient. One of the best flights I have ever been on. They made the long flight comfortable and I noticed there were two birthdays on the flight. They gave to customers birthday cards and wished them a happy birthday. That was very nice to see.

Everything was great. Wifi was down,but that didn't matter to me.

The staff are very kind ,friendly and helpful .This is my first time flying with ANA and surely will fly again.

The best best best flight experience I have ever had. And I fly A LOT. THANK YOU, ANA!!!

My wife and I liked almost everything about ANA except for the economy seat space and the cold breakfast (croissant which seemed to just come out of the fridge)

When booking the flight i picked it because it said flying with ana even on our e-ticket as well but I showed up to the airport and I flew with united. I have flew with both airlines before and I prefer ana for the food quality and comfortable. So I was disappointed in that outcome and felt the food gave me minor ibs. The whole thing was missing leading with not getting what I thought I was paying for. Felt a bait and switched. Do not have confidence in using this app in the future trips

This was a large plane with an upper deck. It seems like business was upstairs. If it was a US airline then I would say I sat in economy plus, but I think it was just economy. Though since ANA would not allow me to choose seats for the price it may have been plus. Lots of movies to choose from, and good service.

This was the best airline I’ve ever taken. The staff are amazing. The food was great. The pilot was phenomenal. I would highly recommend this airline.

Uh there was a delay, because of the weather. And what took usually an hour flight to Louisville took about 6+ hours. Flight got canceled

There wasn't much entertainment for my short flight but the onboarding process was smooth and the crew provided wonderful service. The seats were also reasonably comfy. Great flight.

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

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.

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.

For the most part, it was an enjoyable experience. It's the 2nd half of the journey was a bit uncomfortable. It was on a noticable smaller plane compared to the previous one.

Everything you need to know for your flight from Seattle to Thailand

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