BKK - SEA

$419 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 12/17. 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
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
$601
Overall average: $834
Philippine Airlines
Tue 3/17Tue 4/7
BKK - SEA • 1 stop
Cheapest one-way
$419
Typical prices: $475-$617
Philippine Airlines
Wed 12/17
BKK - SEA • 1 stop
Top airlines
Philippine Airlines
Cheapest • from $601 (round-trip)
STARLUX Airlines
Best reviews • 8.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
6 weeks
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 11% 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

Tue, Mar 17 - Tue, Apr 7
Philippine Airlines Logo
11:50 pm - 7:40 pmBKK-SEA
33h 50m1 stop
Philippine Airlines Logo
11:05 pm - 4:45 pmSEA-BKK
27h 40m1 stop
$601Philippine Airlines
Find Deal
Tue, Mar 3 - Tue, Mar 24
Philippine Airlines Logo
11:50 pm - 6:40 pmBKK-SEA
33h 50m1 stop
Philippine Airlines Logo
10:30 pm - 12:00 pmSEA-BKK
23h 30m1 stop
$631Philippine Airlines
Find Deal
Mon, Mar 2 - Tue, Mar 24
Hainan Airlines Logo
1:05 am - 8:00 amBKK-SEA
21h 55m1 stop
Hainan Airlines Logo
11:00 am - 11:25 pmSEA-BKK
22h 25m1 stop
$639Hainan Airlines
Find Deal
Mon, Mar 16 - Tue, Apr 7
Hainan Airlines Logo
1:05 am - 9:00 amBKK-SEA
21h 55m1 stop
Hainan Airlines Logo
11:00 am - 11:00 pmSEA-BKK
22h 00m1 stop
$640Hainan Airlines
Find Deal
Mon, Mar 9 - Sat, Mar 14
Hainan Airlines Logo
4:15 pm - 9:00 amBKK-SEA
30h 45m1 stop
Hainan Airlines Logo
11:00 am - 11:25 pmSEA-BKK
22h 25m1 stop
$641Hainan Airlines
Find Deal
Tue, Mar 31 - Fri, Jun 5
Philippine Airlines Logo
1:30 pm - 8:10 pmBKK-SEA
20h 40m1 stop
Philippine Airlines Logo
11:05 pm - 4:45 pmSEA-BKK
27h 40m1 stop
$652Philippine Airlines
Find Deal
Wed, Jan 28 - Wed, Jun 17
Philippine Airlines Logo
11:50 pm - 6:40 pmBKK-SEA
33h 50m1 stop
Philippine Airlines Logo
11:05 pm - 12:05 pmSEA-BKK
23h 00m1 stop
$654Philippine Airlines
Find Deal
Tue, Jan 27 - Tue, Jun 16
Philippine Airlines Logo
1:20 pm - 6:40 pmBKK-SEA
20h 20m1 stop
Philippine Airlines Logo
11:05 pm - 12:05 pmSEA-BKK
23h 00m1 stop
$671Philippine Airlines
Find Deal
Tue, Feb 10 - Tue, Mar 10
Philippine Airlines Logo
6:45 pm - 6:40 pmBKK-SEA
38h 55m1 stop
Philippine Airlines Logo
10:30 pm - 12:00 pmSEA-BKK
23h 30m1 stop
$677Philippine Airlines
Find Deal
Tue, Feb 10 - Tue, Mar 10
Philippine Airlines Logo
6:45 pm - 6:40 pmBKK-SEA
38h 55m1 stop
Philippine Airlines Logo
10:30 pm - 12:00 pmSEA-BKK
23h 30m1 stop
$679Philippine 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.

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 November, where tickets cost $806 (return) on average. On the other hand, the most expensive months are July and January, where the average cost of round-trip tickets is $1,099 and $1,041 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 17% 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$419
Best time to beat the crowds but there is an average 11% 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 $419 for a one-way ticket and $601 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?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Bangkok and Seattle, with oneworld 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 $825 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 $950 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 230 reviews
9.0Boarding
8.9Entertainment
8.9Comfort
9.2Crew
8.7Food
Airline reviews

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.

10.0 ExcellentBrian, Oct 2025SIN - TPE
Read more STARLUX Airlines reviews

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.

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.

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!

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

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.

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

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

the over had ligth did not work'd for the all way

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

DELTA does a terrific job making sure you are well taken care of during the flight, gives you assurance before the flight through numerous email notifications about your upcoming flight & lastly good follow up after the flight making sure your needs were mat. It has been, is & will continue to be my carrier of choice in all my future travels. Good Job DELTA

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

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.

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.

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

Information on your arrival and departure airports