BKK - SEA

$380 Find Cheap Flights from Bangkok to Seattle

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 9/20. 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 Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bangkok to Seattle.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bangkok to Seattle.
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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 9 - Wed, Nov 12
Philippine Airlines Logo
6:40 pm - 7:15 pmBKK-SEA
38h 35m1 stop
Philippine Airlines Logo
9:30 pm - 5:50 pmSEA-BKK
29h 20m1 stop
$582Philippine Airlines
Find Deal
Thu, Oct 9 - Wed, Nov 12
Philippine Airlines Logo
11:20 pm - 7:15 pmBKK-SEA
33h 55m1 stop
Philippine Airlines Logo
9:30 pm - 5:50 pmSEA-BKK
29h 20m1 stop
$583Philippine Airlines
Find Deal
Sat, Oct 25 - Fri, Nov 7
Philippine Airlines Logo
6:40 pm - 7:35 pmBKK-SEA
38h 55m1 stop
Philippine Airlines Logo
9:30 pm - 10:45 pmSEA-BKK
34h 15m1 stop
$584Philippine Airlines
Find Deal
Wed, Sep 10 - Sat, Sep 13
STARLUX Airlines Logo
1:10 pm - 4:10 pmBKK-SEA
17h 00m1 stop
STARLUX Airlines Logo
1:15 am - 12:00 pmSEA-BKK
20h 45m1 stop
$704STARLUX Airlines
Find Deal
Sun, Sep 28 - Sat, Oct 4
STARLUX Airlines Logo
5:50 pm - 4:10 pmBKK-SEA
36h 20m1 stop
STARLUX Airlines Logo
1:15 am - 12:00 pmSEA-BKK
20h 45m1 stop
$723STARLUX Airlines
Find Deal
Mon, Sep 8 - Tue, Dec 2
 Logo
11:30 pm - 12:30 pmBKK-SEA
27h 00m1 stop
 Logo
12:10 am - 10:05 pmSEA-BKK
30h 55m1 stop
Sat, Sep 27 - Sun, Oct 5
 Logo
2:35 am - 12:30 pmBKK-SEA
23h 55m1 stop
 Logo
2:15 pm - 11:10 pmSEA-BKK
18h 55m1 stop
Wed, Sep 10 - Thu, Sep 18
Asiana Airlines Logo
1:20 am - 12:30 pmBKK-SEA
25h 10m1 stop
Asiana Airlines Logo
2:15 pm - 11:10 pmSEA-BKK
18h 55m1 stop
$777Asiana Airlines
Find Deal
Sun, Sep 7 - Tue, Dec 2
China Airlines Logo
2:40 am - 7:45 pmBKK-SEA
31h 05m1 stop
China Airlines Logo
12:10 am - 4:45 pmSEA-BKK
25h 35m1 stop
$785China Airlines
Find Deal
Fri, Oct 24 - Mon, Nov 3
China Airlines Logo
2:40 am - 7:20 pmBKK-SEA
30h 40m1 stop
China Airlines Logo
12:10 am - 9:50 amSEA-BKK
18h 40m1 stop
$788China Airlines
Find Deal
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?

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

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

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

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 February, where tickets cost $741 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $1,100 and $1,069 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 2 weeks before departure, which saves you about 5% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$380
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 1% lower on average.
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 3 days, the lowest price for a flight from Bangkok Suvarnabhumi Airport to Seattle was $380 for a one-way ticket and $582 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 Korean Air?

    The two airlines most popular with KAYAK users for flights from Bangkok to Seattle are STARLUX Airlines and Korean Air. With an average price for the route of $868 and an overall rating of 9.0, STARLUX Airlines is the most popular choice. Korean Air is also a great choice for the route, with an average price of $968 and an overall rating of 8.4.

  • 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.
9.0
STARLUX AirlinesOverall score based on 204 reviews
8.9Comfort
9.3Crew
8.7Food
9.0Boarding
8.9Entertainment
Airline reviews

The airplane so clean and they have a nice crew

8.0 ExcellentRon, Jul 2025TPE - LAX
Read more STARLUX Airlines reviews

The airplane so clean and they have a nice crew

it they come out with resent movie and good food

The crew could have been kinder and less pushy. The premium economy seats don't have enough cushion. The seats are to hard and the flight became painful and uncomfortable after an hour of flying.

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.

Our transit in Taipei was disappointing. The ground crew could not tell us where the lounge was located, so we wasted 15 minutes trying to find it. The airline has a great review, but our experience says otherwise.

Greetings when you arrive on the plane and good bye when you leave. Very attentive flight attendants.

Serve me a meal, I fell asleep during the flight. So they passed me twice.

Seats are not table comfortable. Crew members are pretty good. Can be much better!!

Very pleasant overall, although the movie selection could have been better.

I usually have ear problems when planes land. But the landing was so smooth I didn’t even notice it landing! The service was excellent!

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

EVA airlines was excellent: on time or early, safe, courteous crew. Highly recommended.

EVA! What is going on with your food!?!? Pre pandemic I used to go to Taiwan at least twice a year and always flew EVA — the food was consistently tasty for airplane food. Post pandemic, it’s not great at all. Step it up!

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

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

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.

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

Everything is good staff is polite and helpful flights are on time sub sandwhich for a snack was good with a bottle of water only thing maybe more variety of food like breakfast or dinner depends on the time

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.

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

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

The plane hasnt left im stuck in seatle still my flight has been grounded for almost 5 hours

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.

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.

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

Our seats were comfortable with adequate room to stretch out and recline. The food was tasty and served it just the right intervals. Our flight attendant was extra attentive and friendly. Flight arrived early. And the most turbulence. Overall that’s good and experience for an 11 hour flight as can be hoped for

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

There was supposed to be a meal served, but there wasn’t and the major toilet was out of order

They made us board and then deboard due to mechanical issue which delayed the departure by almost 2 hours and we barely made our connecting flight. These quality checks should've been done before boarding not after.

Having to up charge for a seat assignment is not good. Delta can do better

I liked the friendliness of the staff. The cleanliness of all 3 planes.

Boarding and flying on time is the most important need of passengers they did that

Everything was very good but seats are small for a big man!

reach the standard, crew tried to fix up issues fast.

Theairline, both at the terminal and during the entirety of the flight were kept at uncomfortably cold temps. Maybe between 55 and 60 f. Those who had traveled with the airline before donned puffer jackets, wool hats and pulled blankets from their carry-on bags. The seat back entertainment also failed on my trip, leaving me for 12 hrs. With nothing. Seats offered enough room (barely) for a 6'1" frame, but it was pretty tight But the worst offender was the uncomfortable temp..

Purchased exit row window seat for extra leg room and sleep. Worth the price. Attendants maintained restrooms regularly. No snacks/chips/nuts/cookies beyond what was served with meals.

Manila airport is a dump. Very dirty and not comfortable at all

Not so good, my business seat is not working properly

Nice new lay-flat seats in Business Class!! What a wonderful experience!

Going to Dumaguette 4 times in a row I was late it's terrible

The flight to GES MNL sucks, there was no entertainment. There was no footrest. So the business class seat was not comfortable.

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

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