BKK - SEA

$510 Find Cheap Flights from Bangkok to Seattle - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Bangkok to Seattle departing on 10/8. 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, 0 bags

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Everything you should know

Cheapest round-trip
$762
Typical prices: $705-$866
Korean Air
Thu 10/1Wed 10/14
BKK - SEA • 1 stop
Cheapest one-way
$510
Typical prices: $426-$585
China Airlines
Thu 10/8
BKK - SEA • 1 stop
Top airlines
Cheapest • from $762 (round-trip)
Best reviews • 8.9 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Bangkok and Seattle. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $626 (round-trip)
Shortest trip • 16h 14m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 29% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 14% price drop
Most popular
Good to know
Good to know
+1
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Booking Insights
Flight Deals

Cheap Flights from Bangkok to Seattle (BKK-SEA)

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

Thu, Oct 1 - Wed, Oct 14
Korean Air Logo
11:30 pm - 10:40 am
BKK
-
SEA
25h 10m
1 stop
Korean Air Logo
12:50 pm - 9:45 pm
SEA
-
BKK
18h 55m
1 stop
$762Korean Air
Mon, Sep 7 - Mon, Sep 28
Korean Air Logo
9:40 pm - 10:40 am
BKK
-
SEA
27h 00m
1 stop
Korean Air Logo
12:50 pm - 9:45 pm
SEA
-
BKK
18h 55m
1 stop
$770Korean Air
Wed, Sep 23 - Wed, Oct 28
Delta Logo
11:30 pm - 1:37 pm
BKK
-
SEA
28h 07m
1 stop
Delta Logo
1:40 pm - 12:45 am
SEA
-
BKK
21h 05m
1 stop
$772Delta
Mon, Oct 19 - Wed, Oct 28
Korean Air Logo
2:35 am - 10:40 am
BKK
-
SEA
22h 05m
1 stop
Korean Air Logo
12:00 pm - 11:20 pm
SEA
-
BKK
21h 20m
1 stop
$773Korean Air
Sat, Oct 10 - Sun, Oct 18
Delta Logo
9:40 pm - 1:14 pm
BKK
-
SEA
29h 34m
1 stop
Delta Logo
1:00 pm - 1:35 pm
SEA
-
BKK
34h 35m
1 stop
$778Delta
Sun, Oct 4 - Sun, Apr 4
Delta Logo
11:30 pm - 1:14 pm
BKK
-
SEA
27h 44m
1 stop
Delta Logo
1:05 pm - 11:35 pm
SEA
-
BKK
20h 30m
1 stop
$779Delta
Tue, Oct 6 - Thu, Oct 15
Delta Logo
11:30 pm - 1:14 pm
BKK
-
SEA
27h 44m
1 stop
Delta Logo
1:00 pm - 1:05 am
SEA
-
BKK
22h 05m
1 stop
$780Delta
Thu, Oct 8 - Tue, Oct 20
Asiana Airlines Logo
11:45 am - 3:15 pm
BKK
-
SEA
17h 30m
1 stop
Asiana Airlines Logo
12:10 am - 10:40 am
SEA
-
BKK
20h 30m
1 stop
$781Asiana Airlines
Sun, Oct 4 - Sun, Mar 21
Korean Air Logo
9:40 pm - 10:40 am
BKK
-
SEA
27h 00m
1 stop
Korean Air Logo
12:00 pm - 12:45 am
SEA
-
BKK
22h 45m
1 stop
$782Korean Air
Tue, Sep 1 - Thu, Sep 10
Korean Air Logo
9:40 pm - 10:40 am
BKK
-
SEA
27h 00m
1 stop
Korean Air Logo
12:50 pm - 9:45 pm
SEA
-
BKK
18h 55m
1 stop
$785Korean Air
Booking Insights

KAYAK's insights & trends for Bangkok to Seattle flights

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

How much is a round-trip flight from Bangkok Suvarnabhumi Airport to Seattle?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Bangkok Suvarnabhumi Airport to Seattle departing in October.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Bangkok Suvarnabhumi Airport 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 Bangkok Suvarnabhumi Airport to Seattle is March, where tickets cost $742 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $1,005 and $977 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Bangkok Suvarnabhumi Airport to Seattle, 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 Bangkok Suvarnabhumi Airport to Seattle, you should book around 3 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$510
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 2% increase in price.
Flight from Bangkok to Seattle

When to book flights from Bangkok to Seattle

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

  • What is the carry-on policy on airlines from Bangkok (BKK) to Seattle (SEA)?

    First and business-class flyers with Qatar Airways are allowed two pieces of baggage not weighing more than 33 lbs. Economy class ticket holders can bring only one piece of baggage not weighing more than 15 lbs. Korean Airlines flyers in Prestige or first-class cabins can bring two pieces of baggage not weighing more than 40 lbs. Travelers in economy class cabins are allowed one piece of baggage and one personal item. They should not weigh more than 22 lbs.

  • Which airlines fly sustainably from Bangkok to Seattle?

    The average amount of carbon emissions released by each passenger is around 13,865 pounds. Japan Airlines and Air Canada are the most sustainable airlines flying to Seattle from Bangkok. They offset 49% of their carbon emissions. Environmentally conscious passengers can book flights with these airlines.

  • What are the benefits of upgrading to a higher cabin class?

    Air Canada offers wider and more spacious seats to passengers flying in business-class cabins. Additionally, they benefit from priority check-ins and boarding, additional baggage allowances, and in-flight food or beverages. Business-class passengers on American Airlines will benefit from big, flat beds with integrated massage functions and a priority security line.

  • What is the cancellation policy for airlines flying from Bangkok to Seattle?

    If you purchased your ticket at least two days before departure, you have up to 24 hours from the initial purchase to request a refund. All ticket types are subject to the 24-hour refund policy, but you must cancel the trip to receive a refund. Group block reservations are not eligible for the 24-hour refund.

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

    In the last 5 days, the lowest price for a flight from Bangkok Suvarnabhumi Airport to Seattle was $510 for a one-way ticket and $762 for a round-trip.

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

    A passport is required to fly from Bangkok to Seattle.

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

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

  • Which airline alliances offer flights from Bangkok to Seattle?

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

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

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

  • Which is the best airline for flights from Bangkok to Seattle, STARLUX Airlines or EVA Air?

    The two airlines most popular with KAYAK users for flights from Bangkok to Seattle are STARLUX Airlines and EVA Air. With an average price for the route of $823 and an overall rating of 8.9, STARLUX Airlines is the most popular choice. EVA Air is also a great choice for the route, with an average price of $887 and an overall rating of 8.5.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Bangkok 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 Bangkok 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 Bangkok with another airline. Booking your flights between Bangkok 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 Bangkok 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 Bangkok 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 Bangkok Suvarnabhumi Airport to Seattle

  • Seattle-Tacoma International Airport (SEA) is about one mile south of downtown Seattle. Incoming passengers into SEA can access different cities within close proximity to Seattle, which the airport serves. Some of these cities include Burien, Tukwila, Kirkwood, and Tacoma.
  • All car rental facilities operating at SEA are off-site, but a free shuttle offers transport services to the rental facilities. The shuttle stations are on the south and north ends, at the passenger pickup area on the lower road on the baggage claim level. Some car rental agencies you will access include National, Payless, Thrifty, Avis, and Hertz.
  • Air China allows passengers to travel with checked live animals like pets. However, they are not allowed into the cabins. They are required to travel in the cargo compartment as checked baggage. Cats and dogs not older than eight weeks, pregnant, and lactating are not accepted. Asiana Airlines allows adults to bring one pet into the cabin and two pets as checked baggage.
  • Upon request at Eva Air's reservation office, passengers can request check-in or onboard special attention. Passengers with reduced mobility can also access wheelchair services. Asiana Airlines allows service dogs into the cabin to accompany passengers with visual and hearing impairments, free of charge. Service dogs must have the appropriate documentation, such as health vaccination certificates.
  • Eva Air requires adult passengers traveling with two infants or children to book a seat for one using an approved child car seat. Air Canada offers pre-board services to passengers with children under the age of six years before general boarding.

Reviews of the top 5 airlines serving from Bangkok to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Bangkok 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 Bangkok 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.
8.9
STARLUX AirlinesOverall score based on 352 reviews
8.7Food
8.9Boarding
8.9Comfort
9.2Crew
8.8Entertainment
Airline reviews

The food was amazing good especially for evonoply. The seats were comfy more then usually..crew was very nice and helpful.

10.0 ExcellentJim, May 2026
TPE - SEA
Read more STARLUX Airlines reviews

The food was amazing good especially for evonoply. The seats were comfy more then usually..crew was very nice and helpful.

We are scare because almost missing the fligh from Seattle to San Diego ! Starlux not have enough members for servicing with wheel chairs? We almost left behind , so we must walking !?

FLEW IN BUSINESS CLASS OVER NIGHT FLIGHT AIRLINE BOOKED A PARENT AND ONE YEAR OLD KID PARENT ALLOWED THE KID TO DISTURB EVERYONES SLEEP A terrible flight that was expensive I have 10 grand children I love kids But to be disturbed on a over night flight is in not what I paid for I hold the air line responsible Respectfully, Al Eaddy

more new movies and the blockbuster movies that everyone likes

Great airline. Kind staff, before m, during, and after the flight. They Directed you the whole way. Even when I arrived at my transfer destination, flight attendants guided passengers on which direction to go. I would definitely fly STARLUX again.

Crew is very attentive. Another new airbus 350-900 plane. Very modern.

Aircraft is new and toilets are spacious, but toilets are quite filthy. They should clean more often. They have a long list of drink offer but are actually not available during meal. They said they’ll come back with them and you don’t get them until after dinner which means you eat your meals without any drinks if you were to get something that they don’t have on the cart. They are strict about removing headphones during take off and landing which is new to us since the movies did not get turned off. Instead, we we’re forced to watch their commercials during that time. We probably would fly with them again but not with the cost we spent. For the record, I work in tourism and travel a lot for inspections.

This Airline is really good! Better than Eva air for sure and more luxury. I really liked all the small details and amenities plus it really is free alcohol!

Efficient boarding, on time departure. Cabin crew all nice looking and well dressed, helpful. Plane interior looked modern and new, fresh condition.

My husband and I like this airlines , lt looks new ,clean & good service. Then we will fly with STARLUX again. And I love their time , it is perfect for my family. See you soon.

Its fantastic!!I like the food the serve in EVA air😊

Service in BKK was very good at answering our question about our canceled flight from Taipei to San Francisco. Did like the lead time about the canceled flight from Taipei to San Francisco and was not given the best options.

Awful had to ask for a supervisor to sit with my flight companion even t booked the tickets together weeks before

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.

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.

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?

Plane is new and I was upgraded to first class so all was great.

I was expecting that movie selection and food would have been better. Everything else was great.

Eva is one of the top airlines in Asia... but often are over priced. Finally found a reasonable rate.

We really enjoyed our flight to Seattle. The food was great and service was attentive.

The crew are amazing. Very professional, polite, kind, and accommodating.

Very bad. They don’t allow group people to sit together by blocking most of seats and opening only single seat during online checking in. . By doing so, they can rip off customers at the check-in counter by collecting extra money if we want to sit together in the same row.

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

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.

Bars and restaurants in Taipei close early. The lounge isn’t very good, but better than the public areas.

My flight to Los Angeles was canceled Had to book another flight and you charged me extra $500 Very bad experience

3 of the 4 flights had delays despite the weather being fine, but still managed to make all connections

Baggage made it successfully to destination despite short layover. Appreciate that.

The plane was an older model and the entertainment was hard to enjoy on those small screens. I struggled to see clear anything I wanted to watch. The seats where a bit uncomfortable but for a 3 hours flight it was pretty ok. The rest of services were excellent. Highly recommend China Airlines to others.

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

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.

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

Great service. They could offer vegetarian food and do more to reduce waste.

Very comfortable seats, delicious meals, and friendly and helpful staff

Staff was excellent. Food could use more variety. -More vegetable options. Menu didn't have juice or soda listed. -The croissants were outstanding!

Asian Vegitarian food was test less No Salt or pepper served Need to improve with Chef who can caters for Peaple from India I am sure Chef knows different varieties of food Indian People like

Airfare was ok . Food not good , seat ok but not comfortable. Lay over too long , crew was ok Overall just ok

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.

Not really a “Delta” problem but worth mentioning: Boarding was a difficult process. TSA seemed understaffed and Pre-Check took longer than regular TSA. The supervisor was frazzled and yelled at travelers. Once through TSA, we had to put our carry-ons through another x-ray machine. Then queue up to board with both boarding pass and ID. Then, when we got to the stairs on the tarmac, we had to show our boarding pass again. Maybe this is just normal for Kona since the terminal is outdoors (but still a “secured” area).

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Much better than I expected. I had an economy ticket so I was really happy the flight was so comfy and the service so generous. Passengers were all polite too.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

Staff was great! Kind and cordial! Middle seat row 28 seat B has a hump in it. Trays were getting stuck when putting down and up. Good flight

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

Information on your arrival and departure airports