BKK - SEA

$428 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 3/16. 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

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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Everything you should know

Cheapest round-trip
$633
Overall average: $786
Multiple Airlines
Sun 2/8Sat 2/21
BKK - SEA • 1 stop
Cheapest one-way
$428
Typical prices: $492-$596
Philippine Airlines
Mon 3/16
BKK - SEA • 1 stop
When to book
6 weeks
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 15% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 12% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
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

Sun, Feb 8 - Sat, Feb 21
Multiple Airlines Logo
2:05 am - 1:55 pm
BKK
-
SEA
26h 50m1 stop
Multiple Airlines Logo
12:10 am - 12:45 am
SEA
-
BKK
33h 35m1 stop
$633Multiple Airlines
Sat, Feb 14 - Sat, Feb 21
Multiple Airlines Logo
2:05 am - 1:55 pm
BKK
-
SEA
26h 50m1 stop
Multiple Airlines Logo
12:10 am - 12:55 am
SEA
-
BKK
33h 45m1 stop
$636Multiple Airlines
Thu, Feb 12 - Wed, Feb 25
Multiple Airlines Logo
2:05 am - 1:55 pm
BKK
-
SEA
26h 50m1 stop
Multiple Airlines Logo
12:10 am - 12:55 am
SEA
-
BKK
33h 45m1 stop
$637Multiple Airlines
Mon, Mar 2 - Tue, Mar 24
Hainan Airlines Logo
1:05 am - 8:00 am
BKK
-
SEA
21h 55m1 stop
Hainan Airlines Logo
11:00 am - 11:25 pm
SEA
-
BKK
22h 25m1 stop
$638Hainan Airlines
Mon, Mar 16 - Tue, Apr 7
Hainan Airlines Logo
1:05 am - 9:00 am
BKK
-
SEA
21h 55m1 stop
Hainan Airlines Logo
11:00 am - 11:00 pm
SEA
-
BKK
22h 00m1 stop
$658Hainan Airlines
Mon, Mar 16 - Sat, Apr 4
Hainan Airlines Logo
1:05 am - 9:00 am
BKK
-
SEA
21h 55m1 stop
Hainan Airlines Logo
11:00 am - 11:00 pm
SEA
-
BKK
22h 00m1 stop
$660Hainan Airlines
Mon, Jun 1 - Tue, Sep 1
Philippine Airlines Logo
11:40 pm - 8:05 pm
BKK
-
SEA
34h 25m1 stop
Philippine Airlines Logo
11:10 pm - 12:10 pm
SEA
-
BKK
23h 00m1 stop
$661Philippine Airlines
Fri, Mar 20 - Tue, Apr 7
Hainan Airlines Logo
4:20 pm - 9:00 am
BKK
-
SEA
30h 40m1 stop
Hainan Airlines Logo
11:00 am - 12:20 pm
SEA
-
BKK
35h 20m1 stop
$663Hainan Airlines
Mon, Jun 1 - Tue, Sep 1
Philippine Airlines Logo
11:40 pm - 8:05 pm
BKK
-
SEA
34h 25m1 stop
Philippine Airlines Logo
11:10 pm - 10:40 pm
SEA
-
BKK
33h 30m1 stop
$667Philippine Airlines
Tue, Mar 31 - Fri, Jun 5
Philippine Airlines Logo
1:25 pm - 8:05 pm
BKK
-
SEA
20h 40m1 stop
Philippine Airlines Logo
11:10 pm - 6:30 pm
SEA
-
BKK
29h 20m1 stop
$670Philippine Airlines
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.

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 $786 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $1,099 and $1,009 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 6 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$428
Best time to beat the crowds but there is an average 13% 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 3 days, the lowest price for a flight from Bangkok Suvarnabhumi Airport to Seattle was $428 for a one-way ticket and $633 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 $824 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 $916 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.
8.9
STARLUX AirlinesOverall score based on 252 reviews
8.9Boarding
9.1Crew
8.8Entertainment
8.8Comfort
8.7Food
Airline reviews

Preboarding food selection is an excellent idea. On the other end I did know the choice. People in my area know the choice. It ends with I got my meal till most of them are half way to finish their meal.

8.0 ExcellentAnonymous, Dec 2025
TPE - ONT
Read more STARLUX Airlines reviews

Preboarding food selection is an excellent idea. On the other end I did know the choice. People in my area know the choice. It ends with I got my meal till most of them are half way to finish their meal.

Overall it’s good . However the food quality can be improved .

My luggage was forced open and broke the zipper. I received it in a huge STARLUX plastic bag. Unfortunately, I have a round trip ticket but might be my first and last with this airline

I went to the gate that showed on the flight board but they changed gates at the last minute and I missed my flight. I had to buy new ticket from EVA air to Manila and take 3 hour bus ride back to my home. Will never fly Starlux again!

Starlux was great service and awesome food and drinks👍🏼 will take starlux again for my next vacation👍🏼

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

Flight cancelled due to inclement weather yet rival airline EVA Air with the same route departed 2 hours later and landed safely while our flight was cancelled and rescheduled for 36 hours later.

The staff in air and on land went above and beyond! I would definately recommend and we will fly Starlux again!

I need Starlux to respond to my complaint and issues for my flight.

Someon vomit during boarding. My seat was next to the vomit. I asked crew member to switch seat, but they said it was a full flight. I had my baby with me. My baby got sick after the flight. He was in the hospital for 2 days.

Excess baggage fees are outrageous ($250 per bag). Flight crew and planes are nice.

Eva airlines has very goin service, despite being low cost. Meals and fin, not amazing, restrooms always clean and staff polite and helpful

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

Flight was canceled was only given only a 8 hour lead time. Had to fight to be put on another airline (United Airlines) that was leaving earlier then the one EVA and rescheduled.

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

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!

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

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.

Hour late but understandable under the conditions. Taoyuan airport could have clearer signs language wise and more staff to help direct people.

Delayed. Not a full flight and whole rows left open with the paid seating. Food was ok. My beef meal only had one cube of beef the rest carrot cubes. Entertainment on personal device but didn’t know about it until the flight was almost done.

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

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

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

Overall was a lovely experience. The crew were kind and courteous throughout the entire flight.

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.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

Delta is a good airline. I've never had an issue with Delta. I'll continue to fly with them until they show me that I shouldn't.

The only thing nice I can say is the flight crew was really nice and apologetic about the situation. They shared as much information as they had and advised us on what we could do about missing connecting flights. The boarding process was so slow. The gate agent was working by herself and should have had someone working with her. It took almost an hour to board because she was trying to board a full flight of people and provide customer service to everyone who was flying standby and/or had questions. It was really chaotic. This didn't help the fact that we were delayed and folks were missing connections the longer it took.

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

Did not realize internet screen was hidden between seats and no info printed!!!!

I went to washroom twice and once there was no toilet seat cover and the other no toilet paper at all. I don't think it was ever replenished or checked before we boarded as it was very early on in the flight.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Very good flight crew and very nice people staff were incredible especially the gate agent

Flight was good took off on time arrived early. Crew was awesome and did a great job. Very helpful and courteous. Bags arrived super fast with no hassles. Great flight!!!!!!

A shameful national carrier. Service has gone down from the highs of a decade before. You don’t feel the Filipino hospitality. It’s an aging fleet. Nil comfort, and I flew premium economy.

Excellent! All flight related was memorable ! My first experience with Mabuhay Lounge,,, not so good

Great. Always great service and their pilots know how to land planes properly

Plane are getting old, almost an hour delay due to technical reson , after all passenger aboard. Took 4 flight on business class this trip and all the planes had an issues. PAL need to improve their planes.

Flight was really good, considering the semi bad weather in MNL. Food was great. Crew kept offering throughout the flight. Wifi signal was intermittent though.

You have to pay $25 to get access to smoking lounge. One coffee and small bottle of water coupon provided. Max time 2 hrs for two entries total.

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.

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

Information on your arrival and departure airports