SEA - BKK

$283 Find Cheap Flights from Seattle to Bangkok Suvarnabhumi Airport

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 Bangkok departing on 11/9. 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 Bangkok Suvarnabhumi Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Bangkok.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Bangkok.
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Flight Deals

Cheap Flights from Seattle to Suvarnabhumi (SEA-BKK)

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

Tue, Feb 3 - Wed, Feb 11
Singapore Airlines Logo
8:45 am - 8:00 pmSEA-BKK
20h 15m1 stop
Singapore Airlines Logo
8:00 pm - 7:10 amBKK-SEA
26h 10m1 stop
$511Singapore Airlines
Find Deal
Sun, Jan 18 - Thu, Feb 5
Singapore Airlines Logo
8:45 am - 8:30 amSEA-BKK
32h 45m1 stop
Singapore Airlines Logo
8:00 pm - 7:10 amBKK-SEA
26h 10m1 stop
$512Singapore Airlines
Find Deal
Sat, Feb 7 - Thu, Feb 12
Singapore Airlines Logo
8:45 am - 8:00 pmSEA-BKK
20h 15m1 stop
Singapore Airlines Logo
12:00 pm - 7:10 amBKK-SEA
34h 10m1 stop
$538Singapore Airlines
Find Deal
Tue, Jan 27 - Wed, Feb 18
Singapore Airlines Logo
8:45 am - 8:00 pmSEA-BKK
20h 15m1 stop
Singapore Airlines Logo
8:00 pm - 7:10 amBKK-SEA
26h 10m1 stop
$562Singapore Airlines
Find Deal
Tue, Oct 21 - Mon, Nov 17
Singapore Airlines Logo
10:15 am - 7:00 pmSEA-BKK
42h 45m1 stop
Singapore Airlines Logo
8:00 pm - 7:10 amBKK-SEA
26h 10m1 stop
$566Singapore Airlines
Find Deal
Wed, Oct 29 - Sat, Nov 15
Philippine Airlines Logo
10:30 pm - 10:45 pmSEA-BKK
34h 15m1 stop
Philippine Airlines Logo
11:35 pm - 6:35 pmBKK-SEA
34h 00m1 stop
$580Philippine Airlines
Find Deal
Sun, Sep 28 - Wed, Oct 15
Philippine Airlines Logo
11:35 pm - 12:15 pmSEA-BKK
22h 40m1 stop
Philippine Airlines Logo
1:30 pm - 7:15 pmBKK-SEA
19h 45m1 stop
$581Philippine Airlines
Find Deal
Mon, Dec 1 - Fri, Dec 19
Asiana Airlines Logo
12:10 am - 11:15 amSEA-BKK
20h 05m1 stop
Asiana Airlines Logo
11:55 pm - 1:55 pmBKK-SEA
29h 00m1 stop
$622Asiana Airlines
Find Deal
Mon, Jan 12 - Thu, Mar 12
Asiana Airlines Logo
12:10 am - 11:15 amSEA-BKK
20h 05m1 stop
Asiana Airlines Logo
11:55 pm - 2:55 pmBKK-SEA
29h 00m1 stop
$626Asiana Airlines
Find Deal
Tue, Sep 2 - Tue, Sep 9
Korean Air Logo
12:50 pm - 9:45 pmSEA-BKK
18h 55m1 stop
Korean Air Logo
11:30 pm - 10:40 amBKK-SEA
25h 10m1 stop
$656Korean Air
Find Deal
Booking Insights

KAYAK's insights & trends for Seattle to Bangkok flights

Get data-powered insights and trends into flights from Seattle to Bangkok 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 Bangkok Suvarnabhumi Airport?

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

For Seattle to Bangkok Suvarnabhumi Airport, Tuesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Bangkok Suvarnabhumi Airport back to Seattle, the best deals are generally found on Wednesday, with Thursday being the most expensive.

What is the cheapest month to fly from Seattle to Bangkok Suvarnabhumi Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Bangkok Suvarnabhumi Airport, 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 Bangkok Suvarnabhumi Airport is February, where tickets cost $786 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,263 and $1,196 respectively.

How far in advance should I book a flight from Seattle to Bangkok Suvarnabhumi Airport?

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 Bangkok Suvarnabhumi Airport, 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 Bangkok Suvarnabhumi Airport, you should book around 4 weeks before departure, which saves you about 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$283
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Seattle to Bangkok Suvarnabhumi Airport

When to book flights from Seattle to Bangkok

Are your dates flexible? Find out the best times to travel from Seattle to Bangkok 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 Seattle to Bangkok Suvarnabhumi Airport flights

  • What is the cheapest flight from Seattle to Bangkok Suvarnabhumi Airport?

    In the last 3 days, the lowest price for a flight from Seattle to Bangkok Suvarnabhumi Airport was $283 for a one-way ticket and $511 for a round-trip.

  • Do I need a passport to fly between Seattle and Bangkok Suvarnabhumi Airport?

    Yes, you’ll need a passport to travel to Bangkok Suvarnabhumi Airport from Seattle.

  • Which aircraft models fly most regularly from Seattle to Bangkok Suvarnabhumi Airport?

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

  • Which airline alliances offer flights from Seattle to Bangkok Suvarnabhumi Airport?

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

  • What is the most popular layover when flying to Bangkok Suvarnabhumi Airport from Seattle?

    Taipei City is the most popular layover city among KAYAK users traveling from Seattle to Bangkok Suvarnabhumi Airport.

  • Which is the best airline for flights from Seattle to Bangkok, ANA or Korean Air?

    The two airlines most popular with KAYAK users for flights from Seattle to Bangkok are ANA and Korean Air. With an average price for the route of $897 and an overall rating of 8.4, ANA is the most popular choice. Korean Air is also a great choice for the route, with an average price of $764 and an overall rating of 8.4.

  • How does KAYAK find such low prices on flights from Seattle to Bangkok Suvarnabhumi Airport?

    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 Bangkok Suvarnabhumi Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok Suvarnabhumi Airport 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 Bangkok Suvarnabhumi Airport?

    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 Bangkok Suvarnabhumi Airport with an airline and back to Seattle with another airline. Booking your flights between Seattle and BKK 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 Bangkok Suvarnabhumi Airport?

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

Reviews of the top 5 airlines serving from Seattle to Bangkok

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Bangkok. 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 Bangkok? 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 1233 reviews
8.0Entertainment
8.6Crew
8.4Boarding
8.1Food
8.3Comfort
Airline reviews

Very good service and food. Crew was professional and helpful. Cabin and restrooms were kept clean

10.0 ExcellentDale, Aug 2025TPE - CRK
Read more EVA Air reviews

Very good service and food. Crew was professional and helpful. Cabin and restrooms were kept clean

Very good service and food. Crew was professional and considerate. Cabin and restrooms were kept clean

Flight Attendants could have been nicer and food portions could be bigger.

Great experience, comfort and food is delicious. Always great service and one time

Excellent service from check in to boarding the crew is so pleasant to asked

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.

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

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.

The crew was very nice and polite. They made sure everybody got their meal and drinks. Even the economy class had a very adequate leg room for someone that is over 6 foot tall.

Purchased WiFi was slow to non functional. Staff was not personable or friendly. Seats were cramped. Boarding took long but I expected that.

Luckily I just tried to sleep. But the entertainment system was awkward to operate. I hate all this stuff with apps and adding it to your phone and all. It is a nuisance. I would prefer a good magazine or newspaper in the pocket in front of me or available.

The seats are uncomfortable. The flight attendants are not pleasant. They do their job, but not with a ray of sunshine and warmth. The food was awful, not what I would expect from an Asian airline. All of the other Asian airlines I have flown have far better food. The food was on par with United airlines food, which is really bad. Maybe ANA should get out of the alliance with United.

One of the best 14 hour flights I've ever had. Crew was friendly throughout which can be difficult on longer flights. The crew being kind and respectful is very important for me. Plane felt clean and I was able to get some well needed uninterrupted sleep. I put them slightly above Cathay Pacific as far as cleanliness the only down side was a lack of entertainment selections, but hey I am an American taking a trip on a Japanese airline so I cannot complain. Thank you ANA and the Tokyo airport all very friendly. Will see you soon

Poor. We weren’t able to check in online (for several hours until we gave up) for no apparent reasons although our passports were loaded successfully. When we were at the airport check-in, a rep helped us at the kiosk but she disregarded the KTN provided to her so we had to come back for it after being questioned by the TSA person…

ANA gave me an amazing experience. They are very good with customer service.

Everything was good may improve some alcohol drinks and amenities during fly

All the food seemed to have onions. I don't eat onions. Anyway, everything else was great. The biggest downside was the underpricer company that purchased the tickets from ANA. Underpricer never provided the United Airlines booking number. ANA was a code share and all our flights were on United. I finally was able get booking numbers from Ujuted on X. They saved me from the upsales underwriter tried to saddle my wife and me with.

Due to turbulence there was no inflight service, which is very understandable, The flight is very short, and safety is more important. There was a bit of a delay with take off, but was to be expected with the rain.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

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!

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.

I love my Delta crew, they were so welcoming and helpful.

Sat next to a woman who had her period. Blood was on her seat and on the arm rest between us. I ended up having period blood on my jacket and shoes. Very gross!

Better organization of boarding procedures. Terrible leadership guiding people to gates.

They need to improve on how the plane lands cause it was not smooth at all.

I did not like how the plane landed. It was not smooth.

Been flying with China Airline over years many times. Good experience with them, no issues.

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.

My luggage didn’t arrive with my flight. Flight was delayed by nearly 2 hours while we sat on the plane and I almost missed my connecting flight and subsequently missed the last train from the airport so it took me another 2 hours to get to my destination after arriving, Crew skipped me several times when offering beverages, and I couldn’t get their attention at times because they wouldn’t even make eye contact with me. They didn’t give me a form for disembarking so I had to go to the back of the line after waiting an eternity for immigration. Paid for on flight wi- fi that didn’t work for most of the flight.

Love flying Asiana. Been using it for over a decade now.

Coming back to America was a peaceful flight everyone and everything was perfect

I had a bad experience coming from America to Thailand. On my connecting flight my check in suitcase was not put on the departing aircraft, I received my suitcase 24 hours after arriving in Bangkok and when I open my luggage my hand swelled up. The next morning when I put on an outfit from my suitcase my face swelled up and became numb. My entire vacation was ruined it seems that some kind of chemical was sprayed into suitcase and ruined my clothes and got me sick. The staff at my hotel called the airline and spoke to someone and they told me to file a complaint and gave my a website to do so. I did not file a complaint I felt like it would have fell on death ears. I had to throw away my brand new vacation clothes and suitcase and I had the worst vacation ever due to this happening to me.

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. 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.

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