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Cheap Flights from Thailand to Seattle

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

Recent round-trip flight deals from Thailand to Seattle

Fri, Dec 11 - Sat, Jan 2
Hainan Airlines Logo
1:05 am - 8:20 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 15m1 stop Beijing Capital
Hainan Airlines Logo
10:20 am - 11:35 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
22h 15m1 stop Beijing Capital
$764Hainan Airlines
Fri, Dec 11 - Sat, Jan 2
Hainan Airlines Logo
1:05 am - 8:20 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 15m1 stop Beijing Capital
Hainan Airlines Logo
10:20 am - 11:35 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
22h 15m1 stop Beijing Capital
$765Hainan Airlines
Sun, Nov 22 - Mon, Jan 11
China Airlines Logo
10:55 am - 6:10 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 15m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
12:10 am - 9:50 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
18h 40m1 stop Taipei City Taiwan Taoyuan Intl
$808China Airlines
Tue, Nov 24 - Tue, Jan 12
China Airlines Logo
10:55 am - 6:10 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 15m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
12:10 am - 1:35 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
34h 25m1 stop Taipei City Taiwan Taoyuan Intl
$808China Airlines
Wed, Nov 25 - Tue, Jan 12
Delta Logo
11:15 pm - 11:51 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
27h 36m1 stop Incheon Intl
Delta Logo
12:40 pm - 12:20 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
20h 40m1 stop Incheon Intl
$834Delta
Wed, Nov 25 - Wed, Jan 13
Delta Logo
11:15 pm - 11:51 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
27h 36m1 stop Incheon Intl
Delta Logo
12:40 pm - 12:20 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
20h 40m1 stop Incheon Intl
$834Delta
Mon, Nov 16 - Thu, Nov 26
Korean Air Logo
10:55 pm - 9:05 amHKT  Phuket City-SEA Seattle/Tacoma Intl
25h 10m1 stop Incheon Intl
Korean Air Logo
12:10 am - 9:25 pmSEA  Seattle/Tacoma Intl-HKT Phuket City
30h 15m1 stop Incheon Intl
$839Korean Air
Mon, Nov 16 - Fri, Nov 27
Korean Air Logo
10:55 pm - 2:10 pmHKT  Phuket City-SEA Seattle/Tacoma Intl
30h 15m1 stop Incheon Intl
Korean Air Logo
12:10 am - 9:25 pmSEA  Seattle/Tacoma Intl-HKT Phuket City
30h 15m1 stop Incheon Intl
$839Korean Air
Sun, Nov 22 - Sat, Dec 5
STARLUX Airlines Logo
5:40 pm - 3:05 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
36h 25m1 stop Taipei City Taiwan Taoyuan Intl
STARLUX Airlines Logo
11:45 pm - 12:35 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
21h 50m1 stop Taipei City Taiwan Taoyuan Intl
$860STARLUX Airlines
Fri, Dec 4 - Sun, Dec 6
STARLUX Airlines Logo
1:45 pm - 3:05 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
16h 20m1 stop Taipei City Taiwan Taoyuan Intl
STARLUX Airlines Logo
11:45 pm - 12:35 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
21h 50m1 stop Taipei City Taiwan Taoyuan Intl
$860STARLUX Airlines
Booking Insights

KAYAK's insights & trends for flights to Seattle

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

What is the cheapest flight to Seattle?

In the last 5 days, the cheapest flight deal to Seattle was found on the route from Chiang Mai, at $764 return. The most popular connection is from Bangkok to Seattle and KAYAK users have found round-trip deals for as low as $764 in the last 5 days.

What is the cheapest month to fly to Seattle?

The cheapest month for flights to Seattle is March, where tickets cost $725 on average for return flights. On the other hand, the most expensive months are August and May, where the average cost of tickets from Thailand is $1,001 and $932 respectively. For one-way flights, the best month to travel is October with an average price of $485.

How far in advance should I book a flight to Seattle?

To get a below average price, you should book around 4 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low season

September

Cheapest flight

$466
Most popular time to fly and prices are also 2% lower on average.
Flight from Chiang Mai to Seattle

FAQs - booking Seattle flights

  • What is the cheapest flight to Seattle?

    In the last 5 days, the cheapest flight deal to Seattle was found on the route from Chiang Mai, at $764 return. The most popular connection is from Bangkok to Seattle and KAYAK users have found round-trip deals for as low as $764 in the last 5 days.

  • How far is Seattle/Tacoma Intl Airport from central Seattle?

    Seattle/Tacoma Intl Airport is 11 miles from the center of Seattle.

  • What is the name of Seattle’s airport?

    All flights to Seattle land at Seattle/Tacoma Intl Airport. The airport code is SEA,and it can also be referred to as Seattle-Tacoma Intl, Seattle/Tacoma, or Seattle/Tacoma Intl.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to Seattle are there each week?

    Each week there are around 15,116 direct flights from within Thailand to Seattle. The most common day for departures is Sunday, with 18% of flights taking off on this day.

Top tips for finding cheap flights to Seattle

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Seattle flight deals.

Reviews of the top 5 airlines serving from Thailand 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.
8.8
STARLUX AirlinesOverall score based on 408 reviews
8.8Boarding
8.8Comfort
8.7Entertainment
8.5Food
9.1Crew
Airline reviews

The cabin was immaculate, attendants were friendly and efficient. The food selection was appropriate for the flight length.

10.0 ExcellentAnonymous, Oct 2026
Read more STARLUX Airlines reviews

The cabin was immaculate, attendants were friendly and efficient. The food selection was appropriate for the flight length.

Starlux is good, however the late boarding from Sea to PHL was frustrates. But it's nice for Alaska to owner the agreement with Starlux.

Nice plans, good food, nothing to complain but the entertainment are out of date programs.

The flight staff was wonderful, especially Jessica, who was extremely friendly and attentive. The food on the plane was ample and delicious. The only negative experience I has was that I was pulled aside for an enhanced security screen at the gate, after my ticket was scanned and I lost my place in line for boarding and went from number 3 in line for zone 1 boarding to actually getting on the plane with the zone 2 and zone 3 travelers. I was almost dead last in getting into the business class section. That's a lot of money to pay for a business class ticket to get pulled aside for nothing.

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 !?

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

The plane was half empty and I lucky to get three seats to myself allowing me to stretch my legs. Even without that the regular leg space in economy was quite comfortable compared to some other planes in recent memory. Food was fine I’m not vegetarian, but neither of the options offered was. So order vegetarian ahead when checkin in.

Picked our seats when we purchased this flight (2 seats alone on the right) but were assigned two middle seats in the middle row at the gate. Very disappointing for a 10 hour+ flight, and what is the point of picking and paying for seats ahead of time when they just reassign us?

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

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.

Rude staff from baggage check to gate crew. Poor instructions. Inconsistent application of baggage rules.

more room in seats, larger snacks, more comms with delays

The plane was a rather tired 737-800, with old style small luggage bins. Poor air flow. USB charger in the infotainment system was not functioning. The flight was 2 hours late due to crew rest requirements (not their fault). On arrival in Seattle, waited on the tarmac for 30 minutes with very few updates from the crew.

One of the restrooms didn’t work. The ones that did never got replenished. Flight attendant just sitting there on their phone. No notification that the bathroom was broken so long lines. Apathetic crew.

I am in a wheelchair The gate agent knew exactly how to boarding A wheelchair first also the flight attendant knew exactly what she was doing

They did everything right and everything happened right on time.

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

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

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

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

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