฿16,207 Find Cheap Flights to Washington

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Thailand to Washington departing on 10/11. 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 Washington

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Washington
These are the airlines KAYAK users have selected most often from within our search results for flights to Washington
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Best Washington Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours
Seattle
Seattle1 stop฿25,190
Yakima
Yakima2 stops฿36,808
Pasco
Pasco2 stops฿35,604
Seattle
Seattle1 stop฿25,190
Yakima
Yakima2 stops฿36,808
Pasco
Pasco2 stops฿35,604

Book Cheap Washington Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Washington 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 return flight deals to Washington

Sun 12 Jul - Sun 26 Jul
Asiana Airlines Logo
11:45 - 15:45
BKK
-
SEA
18h 00m
1 stop
Asiana Airlines Logo
00:10 - 10:40
SEA
-
BKK
20h 30m
1 stop
฿25,190Asiana Airlines
Sun 6 Sep - Fri 11 Sep
Asiana Airlines Logo
11:45 - 15:15
BKK
-
SEA
17h 30m
1 stop
Asiana Airlines Logo
00:10 - 23:35
SEA
-
BKK
33h 25m
1 stop
฿25,483Asiana Airlines
Sun 12 Jul - Sun 26 Jul
Asiana Airlines Logo
11:45 - 15:45
BKK
-
SEA
18h 00m
1 stop
Asiana Airlines Logo
00:10 - 23:35
SEA
-
BKK
33h 25m
1 stop
฿25,645Asiana Airlines
Wed 21 Oct - Thu 5 Nov
Asiana Airlines Logo
01:35 - 15:15
BKK
-
SEA
27h 40m
1 stop
Asiana Airlines Logo
00:10 - 22:00
SEA
-
BKK
30h 50m
1 stop
฿25,678Asiana Airlines
Wed 7 Oct - Sat 17 Oct
ANA Logo
09:35 - 18:32
BKK
-
SEA
22h 57m
2 stops
ANA Logo
10:30 - 05:55
SEA
-
BKK
29h 25m
2 stops
฿26,166ANA
Tue 13 Oct - Sat 24 Oct
China Airlines Logo
11:20 - 19:15
CNX
-
SEA
21h 55m
1 stop
China Airlines Logo
01:10 - 10:25
SEA
-
CNX
19h 15m
1 stop
฿27,826China Airlines
Tue 13 Oct - Tue 27 Oct
STARLUX Airlines Logo
17:20 - 16:10
CNX
-
SEA
36h 50m
1 stop
STARLUX Airlines Logo
00:45 - 16:00
SEA
-
CNX
25h 15m
1 stop
฿27,956STARLUX Airlines
Tue 21 Jul - Sat 12 Sep
China Airlines Logo
11:20 - 19:45
CNX
-
SEA
22h 25m
1 stop
China Airlines Logo
01:55 - 10:20
SEA
-
CNX
18h 25m
1 stop
฿28,346China Airlines
Thu 1 Oct - Thu 8 Oct
STARLUX Airlines Logo
17:20 - 16:10
CNX
-
SEA
36h 50m
1 stop
STARLUX Airlines Logo
01:15 - 16:20
SEA
-
CNX
25h 05m
1 stop
฿28,867STARLUX Airlines
Wed 14 Oct - Tue 27 Oct
EVA Air Logo
11:35 - 19:20
CNX
-
SEA
21h 45m
1 stop
EVA Air Logo
01:10 - 10:35
SEA
-
CNX
19h 25m
1 stop
฿29,909EVA Air
Booking Insights

KAYAK's insights & trends for flights to Washington

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

What is the cheapest month to fly from Thailand to Washington?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Thailand to Washington, 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 Thailand to Washington is February, when tickets cost ฿11,618 (return) on average. On the other hand, the most expensive months are March and April, when the average cost of round-trip tickets is ฿39,998 and ฿27,175 respectively.

How far in advance should I book a flight from Thailand to Washington?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Washington, 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 a flight from Thailand to Washington, you should book around 3 weeks before departure, which saves you about 30% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonMay
Cheapest flight฿16,207
Most popular time to fly and prices are also 2% lower on average.
Flight from Bangkok to Portland

FAQs - booking Washington flights

  • How does KAYAK find such low prices on flights from Thailand to Washington?

    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 Thailand to Washington.

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

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

  • What is the Hacker Fare option on flights from Thailand to Washington?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Thailand to Washington 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 from Thailand to Washington?

    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 from Thailand to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Washington

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

Reviews of the top 5 airlines flying to Washington

 
See real verified KAYAK customer reviews for airlines flying to Washington. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Thailand to Washington. 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 Thailand to Washington? 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 339 reviews
8.8Entertainment
8.9Comfort
8.9Boarding
9.2Crew
8.6Food
Airline reviews

Customer service in Hanoi needs work, outside of that, everything was good.

6.0 GoodAnonymous, Jun 2026
HAN - TPE
Read more STARLUX Airlines reviews

Customer service in Hanoi needs work, outside of that, everything was good.

It did not feel like a luxury airline. We had booked premium economy and opted for AVML meals. This was one of the worst meal in any of the flights and I’m a frequent flyer. No great snack options were available. Drink selection was limited to wine and beer. On a long flight, you need a variety of food which was unfortunately not available. The seats were just OK and the foot rest are not comfortable.. Airline staff for courteous Audio and video section is extremely limited

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

love this boutique luxury airline. crew was nice and attentive. Lounge is too small , i think they should have more area for relaxing and lounging not just to sit and eat .. feels like a cafeteria more than a lounge. overall i enjoy it. food on the plane LAX to Teipei should inprove a bit. no flavor and more drinks pls

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 !?

We are on economy premium but they put us in economy seating? Asking why the fligh supports said : If you not happy you can claim for refund?

FLEW IN BUSINESS CLASS OVER NIGHT FLIGHT AIRLINE BOOKED A PARENT AND ONE YEAR OLD KID PARENT ALLOWED THE KID TO DISTURB EVERYONES SLEEP A terrible flight that was expensive I have 10 grand children I love kids But to be disturbed on a over night flight is in not what I paid for I hold the air line responsible Respectfully, Al Eaddy

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.

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

I liked that they gave us a couple of meals and drinks but the meal was not good and not many options especially if we are seated in the back of the plane.

Crew was good. Sometimes food was eh. The spaghetti is gross for me. First time i got food, they didn’t provide utensils so i ate with my hands. I was hungry. They gave it to me 20 mins later when a crew member came by. I would fly with them again. Nobody is perfect

Eva air was fine - Trip.com via KAYAK sold my family access to a “VIP” lounge fo a layover in Taipei… i’m please look at my pictures. It was a scam, Trip.com knows it and they are perpetrating a fraud through your web site.

My flight was amazing smooth and the attendants were so friendly and nice

Crew are excellent. Food was good generally. Seats are small and there isn’t much leg room. Overhead bins are very small.

What could have been better, was we were delayed from takeoff for two hours. Initially we were informed that we were delayed for refueling. Then we taxied out on the tarmac, then just waited there for a long time, with no explanation of the delay. Were we just waiting on takeoff clearance or was there some other reason for the delay? The pilot, nor none of the crew informed us passengers. That was not good customer service. That needs to be improved, whenever a delay, inform the passengers for the reason.

More seat space More bathrooms Charging outlets Plane was old

This flight was long and I am so thankful I had a seat in the back of the plane. As I usually must get up and stretch every hour . The crew were probably the most friendly I have flown with. Thanks and I will book again with Eva air. Food was ok too.

It was a pleasure to fly with EVA airlines from Taipei to San Francisco.

The staff hold my luggage to steel and exchange my stub, i was very disappointed.

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

I am thankful that I was able to fly using Asiana

It was my first time flying Asiana but i was very pleased with how professional and understanding the flight crew is with little kids. One flight attendant held my 3 year old daughter’s hand guiding her to the exit after landing while i had my hands full with luggage and my infant. She was very helpful.

The customer service was excellent. They noticed that our connecting flight was scheduled too closely for us to complete customs, so they changed the flight. Our initial flight was delayed, and they were able to get us on another flight, all without charging us any additional fees. I would fly them again anytime!

Better screens, it would have been nice to have more comfortable seats.

2nd major delay due to maintenance issues. 1st delay missed my connecting flight.

It was great, but my bag was not loaded onto the connecting flight. I'm currently getting it resolved. If this isn't a problem, everything else was excellent.

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

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Flight went very well. Cabin crew were all courteous and very helpful, always with smiles on their faces. Food was great. I always love heated nuts with wine. Flying business class with Philippine Airlines is always a pleasant experience.

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.

It was never explained why the departure flight was canceled and delayed for 1.5 hours. It would have been nice to stick with the original itinerary.

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

Everything you need to know for your flight to Washington

Cabin class types available on flights to Washington

Cabin classes available on flights to Washington. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.