$335 Find Cheap Flights from Seattle to Bangkok

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 8/17. 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 Bangkok

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

Save 22% 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 Seattle to Bangkok

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Bangkok.
Discover the best prices for you by selecting your travel dates on KAYAK.
Singapore Airlines Logo
10:15 am - 8:15 amSEA-BKK
32h 00m1 stop
Singapore Airlines Logo
3:40 pm - 7:10 amBKK-SEA
30h 30m1 stop
$595Singapore Airlines
Find Deal
Fri, Sep 12 - Wed, Nov 12
Singapore Airlines Logo
10:15 am - 2:20 pmSEA-BKK
38h 05m1 stop
Singapore Airlines Logo
3:30 pm - 8:45 amBKK-SEA
31h 15m1 stop
$615Singapore Airlines
Find Deal
Thu, Sep 11 - Fri, Oct 10
Asiana Airlines Logo
2:30 pm - 11:10 pmSEA-BKK
18h 40m1 stop
Asiana Airlines Logo
1:20 am - 12:30 pmBKK-SEA
25h 10m1 stop
$724Asiana Airlines
Find Deal
Tue, Aug 26 - Thu, Sep 11
Asiana Airlines Logo
2:30 pm - 11:10 pmSEA-BKK
18h 40m1 stop
Asiana Airlines Logo
1:20 am - 12:30 pmBKK-SEA
25h 10m1 stop
$726Asiana Airlines
Find Deal
Tue, Aug 26 - Fri, Sep 12
ANA Logo
1:45 pm - 6:00 amSEA-BKK
26h 15m2 stops
ANA Logo
9:35 am - 6:36 pmBKK-SEA
23h 01m2 stops
$770ANA
Find Deal
Tue, Sep 16 - Wed, Sep 24
ANA Logo
1:45 pm - 4:35 amSEA-BKK
24h 50m2 stops
ANA Logo
9:35 am - 8:54 pmBKK-SEA
25h 19m2 stops
$788ANA
Find Deal
Thu, Aug 14 - Wed, Sep 3
China Airlines Logo
1:40 am - 9:45 amSEA-BKK
18h 05m1 stop
China Airlines Logo
2:40 am - 7:45 pmBKK-SEA
31h 05m1 stop
$830China Airlines
Find Deal
Mon, Aug 25 - Sat, Sep 13
China Airlines Logo
1:10 am - 9:45 amSEA-BKK
18h 35m1 stop
China Airlines Logo
2:40 am - 7:20 pmBKK-SEA
30h 40m1 stop
$839China Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
EVA Air Logo
1:30 am - 11:10 amSEA-BKK
19h 40m1 stop
EVA Air Logo
1:35 am - 7:30 pmBKK-SEA
31h 55m1 stop
$853EVA Air
Find Deal
Wed, Sep 17 - Wed, Oct 15
EVA Air Logo
12:50 am - 10:55 amSEA-BKK
20h 05m1 stop
EVA Air Logo
12:25 pm - 7:30 pmBKK-SEA
21h 05m1 stop
$877EVA Air
Find Deal
Tue, May 13 - Thu, Jun 5
Useful Info

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.

Find cheap flights to Bangkok
Find cheap flights to Bangkok

Planning a trip from Seattle to Bangkok? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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

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

Your flight ticket price will generally be cheaper if you fly to Bangkok on a Tuesday and more expensive on a Friday. On your return trip to Seattle, you should consider flying back on a Wednesday, and avoid Thursdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Bangkok, 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 is February, where tickets cost $820 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,335 and $1,293 respectively.

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

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, 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, 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

Cheapest flight$335
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 flights from Seattle to Bangkok

  • How can I fly from Seattle to Bangkok?

    There are multiple major airlines operating between Seattle and Bangkok. Some of the airlines that frequently travel this route are Singapore Airlines, Korean Airlines and Asian Airlines. Note that there are no direct flights on this route. If you are looking to save on some dollars, you can book the flights with one layover, usually with stops at ICN and NRT.

  • What is the best hotel to stay in in Bangkok?

    There are various hotels located near and at BKK in Bangkok, if you are arriving late in the city. Consider staying at the Millenium Hilton Bangkok, Novotel Bangkok Platinum Pratunam and Radisson Suites Bangkok Sukhumvit. These hotels are within the airport’s proximity and hence are conveniently accessible. As a result, you can avoid the nighttime hassles.

  • Are there medical facilities at BKK?

    Yes, you will find exceptional medical facilities located at BKK, providing emergency services to passengers who get sick while at the airport. Vejthani Hospital Services is an outstanding walk-in clinic located at the airport. Ensure that you visit the hospital if you need urgent medical care.

  • Can I smoke at SEA?

    Smoking is not permitted within the terminal since SEA is a non-smoking facility. Only in defined areas is smoking allowed on the lower airport road sidewalk outside of the baggage claim area. So, if you feel like smoking at SEA, you can take advantage of these facilities.

  • What is the cheapest flight from Seattle to Bangkok?

    In the last 3 days, the lowest price for a flight from Seattle to Bangkok was $335 for a one-way ticket and $595 for a round-trip.

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

    Yes

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

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

  • Which airline alliances offer flights from Seattle to Bangkok?

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

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

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

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

    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.

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

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

    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 with an airline and back to Seattle with another airline.

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

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

KAYAK’s top tips for finding a cheap flight from Seattle to Bangkok

  • If you have scheduled an early morning flight from Seattle Tacoma International Airport (SEA) in Seattle to Bangkok and are looking for accommodation, look no further than Ramada by Wyndham SEATAC Airport Hotel. Located approximately 0.7 miles, it is conveniently accessible. As a result, you will wake up refreshed and avoid the early morning commute.
  • Passengers looking forward to traveling through SEA from Seattle with their four-legged companions should not panic as SEA is a furry-friendly airport. It features exceptional pet relief facilities equipped with fire hydrants, disposable waste bags and sinks. Located at Carousel 1/#door 02, Carousel 33/#door, Carousel 16/door# 26 and near the parking garage are easily accessible. So passengers can utilize these services before boarding their flight to Bangkok.
  • On your way to Bangkok, watch out for currency exchange counters at SEA, as in Bangkok, they use THB instead of USD. At SEA, you will find the currency exchange counters on concourse A, the baggage reclaims area and the main terminal. Alternatively, if you decide to exchange some of your dollars for Thai Baht at the arrival airport, Suvarnabhumi Airport in Bangkok (BKK), you will find currency exchange counters at the arrivals hall, basement level at the baggage claim area.
  • When you arrive at BKK airport in Bangkok and have some time before your airport shuttle transfer, you can visit the Chang Massage and Spa and pamper yourself with an excellent massage, facials, pedicures, manicures and aromatherapy to help you relieve some stress after a long flight from SEA. You can also get these services at the Miracle Transit hotel situated at Concourse G.
  • Passengers with limited mobility arriving at BKK in Bangkok can utilize the special services that the airport offers, such as wheelchair services and extra assistance. However, you can only access these services upon request. If you want to make use of these services, you can call your airline in advance and inform them of the services you need.

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 1186 reviews
8.0Entertainment
8.3Comfort
8.4Boarding
8.6Crew
8.1Food
Airline reviews

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.

10.0 ExcellentAnonymous, Feb 2025ORD - TPE
Read more EVA Air reviews

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.

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.

Great service. Was there a food option? I was given food (I could have ordered ahead of time?) but had no choice. I like choice.

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.

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.

EVA air was nice. It was the first time I’ve flown with them. The poor entertainment choices for 2 long flights will make me think about choosing them next time. I didn’t know if would effect me so much but I couldn’t sleep and it added to the stress. The food was terrible for me but I couldn’t find how to inform them about my diet when I bought my ticket.

Crew's attitude can be better. I asked one crew member to help to put carry on baggage into overhead bin, but he was not willing to help. I needed help because my height is short. His attitude was bad.

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

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.

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

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...

Always have great flight experience on Korean Air. Glad to have been able to book this on Kayak/Under Pricer this year!!

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

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!

My ticket did not indication which group I was in for boarding; the gate attended help me

I would like to commend the staff from this flight. They all looked happy and I can tell they love what they are doing and constantly smiling while serving the passengers. Special mention to the guy FA in our section. I did not get his name but he is so far the best F.A I have ever encountered!

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.

I was ordered vegetarian food, but didn't services to me :(

I did not take the flight, tried to cancel it right after I booked it, but was unable to reach anyone. I blame Kayak for this situation because they sent the booking through another company and I was unable to get anyone to talk to me about the situation. I had to just take the hit and pay for another flight through Cathay Pacific, which was wonderful. I will never use Kayak again. (I bet they don’t post this review!) I’ll just post about them on social media sites. I don’t want anyone to have to go through the hassle and expense I dealt with.

Airline itself is great. While food was being taken off of my tray my beer spilled which was a total accident and I wasn’t upset about that, what was frustrating was I had to ask for towels to clean up and wipe my leg. It would have been left as is if I hadn’t.

Short lay over. Seat assignment was terrible. Was traveling as a family and end up being seated separately. Will not use underpricer ever again.

Excellent service and comfortable seats. Friendly and helpful staff. No food for a 3hr flight over lunch time which was surprising (or is that a feature of domestic flights in Japan?)

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

I had to get rerouted because the weather delayed my flight enough to miss both of my connecting flights. I select nearly 2 hours on customer service trying to get rerouted and had to miss my first plane which took my luggage to San Francisco. Luckily, customer service sent me to the same airport but I had to ride 12 hours in economy after I paid extra for premium economy. Totally sucks that I overpaid. Customer service and airplane crew were great and really helpful though. Although I still hate how small the seat was, especially since I'm smaller than average, I can't imagine how much it would suck for an average sized person.

Flight attendant took good care of my mom as she boarded on and off the aircraft from her wheelchair. I did not care much for the food nor the movie options Available. I appreciated the increased legroom available in economy. This was one of the main reasons we chose the airline. Overall, the good value and I would fly again.

I stopped flying with United back in the nineties. Today's experience reminded me of why.

Wonderfully pleasant experience. Good meal and beverage selections. Professional air staff.

I was very happy with my flight on ANA. The crew were excellent and very helpful throughout the flight. The food was also very good. The seats were comfortable and had excellent legroom. The headphone jack position was annoying, but that is a minor nitpick. The movie selection in the IFE was good, but the TV selection was lacking. Adding English subtitles to the Japanese movies and videos would have been very useful.

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.

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.

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.

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.

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

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.