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฿13,842 Find Cheap Flights to Seattle – Compare and Save

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Everything you should know

Cheapest return flight
฿25,113
Typical prices: ฿25,297-฿32,691
Asiana Airlines
Thu 4/10Sat 6/10
BKK - SEA • 1 stop
Cheapest one-way flight
฿13,842
Typical prices: ฿16,793-฿25,227
Multiple Airlines
Sat 27/10
BKK - SEA • 2 stops
Top airlines
Best reviews • 8.7 score
Airline reviews
Airline reviews
Top routes
Cheapest • 11% average savings
Most popular
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 16 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 16% price drop
Most popular
Good to know
+1
Good to know
+1
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Booking Insights
Flight Deals

Cheap Flights to Seattle

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Seattle

Sun 4 Oct - Tue 6 Oct
Asiana Airlines Logo
11:45 - 15:15BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
17h 30m1 stop Incheon Intl
Asiana Airlines Logo
00:10 - 23:35SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
33h 25m1 stop Incheon Intl
฿25,113Asiana Airlines
Mon 26 Oct - Tue 3 Nov
ไห่หนานแอร์ไลน์ Logo
01:05 - 09:20BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 15m1 stop Beijing Capital
ไห่หนานแอร์ไลน์ Logo
10:20 - 23:25SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
22h 05m1 stop Beijing Capital
฿25,113ไห่หนานแอร์ไลน์
Sun 4 Oct - Tue 6 Oct
Asiana Airlines Logo
11:45 - 15:15BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
17h 30m1 stop Incheon Intl
Asiana Airlines Logo
00:10 - 23:35SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
33h 25m1 stop Incheon Intl
฿25,179Asiana Airlines
Sun 25 Oct - Mon 2 Nov
Korean Air Logo
01:05 - 10:05BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
23h 00m1 stop Incheon Intl
Korean Air Logo
11:00 - 00:20SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
22h 20m1 stop Incheon Intl
฿25,871Korean Air
Tue 1 Dec - Mon 28 Dec
STARLUX Airlines Logo
17:40 - 15:05BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
36h 25m1 stop Taipei City Taiwan Taoyuan Intl
STARLUX Airlines Logo
23:45 - 12:35SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
21h 50m1 stop Taipei City Taiwan Taoyuan Intl
฿27,189STARLUX Airlines
Tue 6 Oct - Wed 14 Oct
STARLUX Airlines Logo
17:50 - 16:10BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
36h 20m1 stop Taipei City Taiwan Taoyuan Intl
STARLUX Airlines Logo
01:15 - 16:40SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
25h 25m1 stop Taipei City Taiwan Taoyuan Intl
฿27,288STARLUX Airlines
Thu 26 Nov - Thu 7 Jan
China Airlines Logo
10:55 - 18:10BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 15m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
00:10 - 16:45SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
25h 35m1 stop Taipei City Taiwan Taoyuan Intl
฿27,815China Airlines
Thu 26 Nov - Sat 9 Jan
China Airlines Logo
10:55 - 18:10BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 15m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
00:10 - 09:50SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
18h 40m1 stop Taipei City Taiwan Taoyuan Intl
฿27,815China Airlines
Fri 5 Feb - Sun 21 Feb
Philippine Airlines Logo
13:10 - 18:45BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
20h 35m1 stop Manila Ninoy Aquino Intl
Philippine Airlines Logo
21:30 - 12:05SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
23h 35m1 stop Manila Ninoy Aquino Intl
฿28,244Philippine Airlines
Fri 27 Nov - Fri 8 Jan
Philippine Airlines Logo
09:55 - 18:30BKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
23h 35m1 stop Manila Ninoy Aquino Intl
Philippine Airlines Logo
21:30 - 12:05SEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
23h 35m1 stop Manila Ninoy Aquino Intl
฿32,264Philippine Airlines
Booking Insights

Price, demand, and travel trends for Thailand to Seattle flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Thailand to Seattle with more confidence.

What is the cheapest flight to Seattle?

Bangkok Suvarnabhumi Airport to Seattle is the cheapest route at ฿25,113 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to Seattle?

A return flight to Seattle costs ฿28,368 on average, based on data over the past 12 months on KAYAK. Return fares from Phuket City average ฿27,160, while Bangkok Suvarnabhumi Airport runs a bit higher at ฿27,518.

What is the cheapest day to fly to Seattle?

Sunday is the cheapest day to fly to Seattle at ฿27,321 return on average over the past 12 months on KAYAK. Thursday is the most expensive at ฿31,440.

What is the cheapest month to fly to Seattle?

  • March is the cheapest month to fly to Seattle with an average price of ฿23,893 return.
  • August (฿31,605) and July (฿30,452) are the most expensive.
  • Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Seattle?

Night flights to Seattle are the cheapest at ฿27,453 return on average. Evening flights are the most expensive at ฿30,287.

What is a good deal for flights to Seattle?

Flights under ฿25,297 are considered a good deal. 25% of KAYAK users found return flights to Seattle at or below these prices, with the lowest fares from:

  • Bangkok Suvarnabhumi Airport ฿24,842
  • Phuket City ฿25,235
.

When are flights to Seattle the cheapest?

Flights to Seattle are cheapest 16 weeks before departure. Booking in this window typically costs about 28% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for flights to Seattle

Low season

September

Cheapest flight

฿13,842
Best time to beat the crowds (1% less expensive on average)
Most popular time to fly and prices are also 2% lower on average.
Flights from Bangkok Suvarnabhumi Airport to Seattle

When to book flights to Seattle

Are your dates flexible? Find out the best times to travel to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your questions about flights to Seattle, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • What is the difference between the most popular and the most frequent airline at Seattle?

    Shanghai Airlines operates the most flights from Thailand to Seattle at 0 per week, while China Airlines is the airline most often selected by KAYAK users searching for flights from Thailand to Seattle. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • Where can I fly from to get the cheapest fares to Seattle?

    Based on fares booked in the past 5 days, the cheapest flights to Seattle are from:
    • Bangkok, from ฿25,113 return

  • How do I know if a flight to Seattle is a good deal?

    A good deal on a flight to Seattle is around ฿25,297 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • How expensive are last-minute flights to Seattle?

    Last-minute fares to Seattle – booked within 2 weeks of departure – run 16% above the average return fare of ฿28,368.

Your guide to booking Seattle flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to Seattle, aim to book around 16 weeks before you fly. That window historically saves about 28% versus last-minute pricing based on KAYAK booking data over the last 12 months.
  • For flights to Seattle, recent KAYAK data shows that stronger deals tend to be around ฿25,297 return. If you see a fare below that threshold, it's a good deal – book before the price climbs back up.
  • If you can choose when to go, aim to travel to Seattle in March. Return fares historically average ฿23,893 that month – typically the cheapest month to travel based on the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to evening to save up to ฿2,834 per return. Evening flights to Seattle average ฿27,453 compared to ฿30,287 for afternoon flights. See the time-of-day chart above for the full breakdown.
  • Once you arrive in Seattle, a great place to start is Seattle Waterfront. It is popular with first-time visitors and can give you a good feel for the area.

Reviews of the top 5 airlines flying to Seattle

 
Need help choosing which airline to fly with 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.
8.7
STARLUX AirlinesOverall score based on 380 reviews
8.8Boarding
8.8Comfort
8.5Food
8.7Entertainment
9.1Crew
Airline reviews

Counter personnel were friendly and professional. Assured me my bag would reach Bangkok without having to get it and recheck it for my international flight from Seattle. Also printed out all of my boarding passes for my trip.

10.0 ExcellentThomas, Aug 2026
Read more STARLUX Airlines reviews

Counter personnel were friendly and professional. Assured me my bag would reach Bangkok without having to get it and recheck it for my international flight from Seattle. Also printed out all of my boarding passes for my trip.

Was not able to buy wifi on the plane given, not available for economy tickets. Was not clear when buying the ticket that this was the case.

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

The overall experience with STARLUX was phenomenal. One of the best highlights for me was the smooth landing in LA(smoothest landing I’ve experienced ever) and the attentiveness of all your staff from check-in to boarding. Also, flight left and landed between airports on time. I highly recommend Starlux to my family and friends and I’m excited to fly with you again.

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 !?

I liked everything but I flew business class and StarLux booked another passenger and a one year old , in business class The child cried 80 percent of the flight, the flight was a long 13 hour flight. I’m 75 and I have 10 grand children, I love kids But with that said it still made it not and enjoyable flight. Ask your great flight attendance what they think of the situation, they had to deal with. Let me know what they said Respectfully, Al Eaddy

Everything is smooth. Very good. Except flight arrived SFO 30min late.

Got dinner and breakfast! They had mahjong game in entertainment system. Current movies. Loved the slippers, sleeping mask packet. Great experience for a long flight

Th tray was dirty when pulled it out. Still oily and food stains can clearly see last trip cleaner did not clean well. The toilet sink water did not drain quickly enough.

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

First international flight where the meals were not to my taste.

Overall, my experience with EVA Air was mixed. The highlight was that the airline clearly tried to provide a premium dining experience by offering the Michelin-starred Kanpai Classic beef yakiniku rice. However, in the limited space of an economy-class cabin, this meal felt overly oily and not very practical to eat. The sauce and grease made it easy to get one’s hands or tray table dirty, and after the meal many passengers may need to go to the lavatory simply to wash their hands. While the food itself may be high quality, the presentation and practicality did not seem well suited to an in-flight environment. Another disappointing part was the paid Wi-Fi service. I paid for the internet package, but the service did not work properly. What made the experience more frustrating was that passengers then had to spend additional time requesting a refund, and the refund process itself was slow and inconvenient. For an international airline, I think a malfunctioning paid service should be handled more efficiently. As for the seat, I feel EVA Air’s economy-class seats may be more comfortable for Asian passengers or people with smaller body frames, but they may not be as comfortable for taller or larger Western passengers on long-haul flights. The overall cabin environment also varied during the flight. Some passengers were not very mindful of noise, cleanliness, or shared cabin etiquette, which affected the comfort of the journey. I believe clearer reminders from the airline regarding cabin manners and hygiene could help improve the overall passenger experience. In short, EVA Air has some strong points, especially in trying to offer a premium Taiwanese-style service, but there are also areas that need improvement: more practical in-flight meals, a more reliable paid Wi-Fi system, faster refund handling, and better cabin management during long-haul flights.

Other than spotty internet, great servic, comfortable and smooth flight!

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

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.

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

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.

When requesting water, make sure, as a passenger, you specify cold or ice added to your cup

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.

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.

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.

The flight who provided services on my row had some not-nice attitude and not smiling at all.

Comfort was left wanting due to such a long flight, made the wife and I wish we could upgrade the seats to Business class or First Class, but did not have that option. Food was good but had very limited options and I have a dietary restriction which was difficult for the staff to accommodate since everything provided came with cheese on it. (Cheese could potentially kill me) Did not have an option to inform the staff until we were already in the air about the restriction and was not provided another option before flight departed.

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.

Coming back to America was a peaceful flight everyone and everything was perfect

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.

Flight stewards were sometimes short when passengers made requests at the same time. The requests were simple but a smile & a remark of "I'll get to you soon" instead of a curt & passing "Wait a minute." Flying is not cheap & good manners should be a given when taking care of people cramped in seats for longer than ten hours. The food tasted great but doesn't look appetizing. The mid-meal break food or merienda were great in the last two flights I was on.

It was amazing with great service. But the seating could have been better if there was ample arm rest areas

Flight attendants did very well, they were all friendly and very helpful .

Everything is ok except the manner of transporting the people that includes me on a wheelchair. That was my first time cuz I was suffering from “sciatica “ and couldn’t walk well. Upon arrival at LAX it took me almost 3 hrs to get out of the airport bcuz of these wheelchairs procedures. If only I can manage to walk I should have done so OMG. Other than that so far everything is ok. THANK YOU.

Absolutely terrible. I will never fly that airline again. The problem was with the constant emails changing my seats, arrival/ departure times and the aircraft. The staff at the airports and onboard were great. Between making the appointment in May 2025 and my actual trip I had over 50 emails announcing changes. I was traveling with 3 other couples and they experienced the same thing.

My luggages were lost and the service attendant was extremely unprofessional. Despite presenting my luggage claim slips, the attendant stated she had “no record” of my bags and made no meaningful effort to assist. When I explained that the luggage contained our family’s complete scuba diving equipment, her response was dismissive, stating that she “didn’t care.” While lost luggage is frustrating on its own, the lack of professionalism and lack of empathy significantly worsened the situation.

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!!!!!!

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

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

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