$292 Find Cheap Flights from Seattle to Thailand - Compare and Save

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Cheap Flights from Seattle to Thailand

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Bangkok
Bangkok1 stop$754
Phuket City
Phuket City1 stop$632
Chiang Mai
Chiang Mai1 stop$846
Ko Samui
Ko Samui1 stop$959
Krabi
Krabi1 stop$1,139
Bangkok
Bangkok1 stop$754
Phuket City
Phuket City1 stop$632
Chiang Mai
Chiang Mai1 stop$846
Ko Samui
Ko Samui1 stop$959
Krabi
Krabi1 stop$1,139
Booking Insights

Price, demand and travel trends for Seattle to Thailand flights

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

Are flights from Seattle to Thailand cheaper or more expensive than last year?

Fares from Seattle to Thailand are running about 5% lower than they were around this time last year, averaging $846 round-trip.

What are the cheapest fares from Seattle to Thailand right now?

Here are the cheapest round-trip fares from Seattle to Thailand on KAYAK in the last week:

• Phuket City (HKT) from $632
• Bangkok Suvarnabhumi (BKK) from $754
• Chiang Mai (CNX) from $846
• Ko Samui (USM) from $958
• Utapao Rayong Pattaya (UTP) from $1,514

What’s the cheapest month to fly from Seattle to Thailand?

March is the cheapest time of year to fly, with average fares of $783. Prices are highest in June, when average flight costs increase to around $1,254.

When is the best time to book flights from Seattle to Thailand?

Book your flights 8 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 17% compared to booking last-minute (within 2 weeks of departure).

Which airport in Thailand is the cheapest to fly to from Seattle?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Thailand are:

• Bangkok Suvarnabhumi (BKK) (avg. price $860)
• Udon Thani (UTH) (avg. price $872)
• Phuket City (HKT) (avg. price $874)

What’s the cheapest day to fly from Seattle to Thailand?

Sunday tends to be the cheapest day to fly from Seattle to Thailand, while Saturday is the most expensive. Fares run about 9% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Seattle to Thailand?

Data from the past 12 months shows it's cheapest to fly to Thailand during the morning with average prices of $811. The evening is the most expensive time to fly, with average prices of $1,245.

Key details for Seattle to Thailand flights

Low season

May

Cheapest flight

$292
Beat the crowds with an average 29% drop in travelers.
The most popular month to fly with an average 44% increase in travelers.
One-way flight from Seattle to Phuket City

Your Seattle to Thailand flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Seattle to Thailand?

    Yes. Fares from Seattle to Thailand are low right now. As a rule of thumb, a round-trip under $748 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Seattle to Thailand?

    Over the past 12 months, round-trip fares from Seattle to Thailand have ranged from $748 to $1,109.

  • What are the main airports serving Thailand?

    Thailand has 33 airports. The three busiest are Bangkok Suvarnabhumi (BKK) (77% of arrivals), Phuket City (HKT) (13%) and Chiang Mai (CNX) (9%).

  • What airlines fly nonstop from Seattle to Thailand?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Seattle to Thailand. One-stop options include:

    • EVA Air
    • Korean Air
    • STARLUX Airlines

  • Which cabin classes are available on flights from Seattle to Thailand?

    On flights from Seattle to Thailand you can book Economy Class, Premium Economy Class, Business Class or First Class.

  • What are some popular landmarks in Thailand?

    KAYAK travelers' favorite landmarks in Thailand include:

    • Pratunam
    • Lamai Beach
    • Chaweng Beach
    • Phuket Old Town

  • Are there onsite hotels at Bangkok Airports?

    There are multiple onsite hotels in both Bangkok airports where you can spend some quality time during a layover or spend the night if you are landing late. If you are landing at BKK, you can consider making reservations at the Novotel Suvarnabhumi Airport Hotel, which is a 5-minute walk from the airport. On the other hand, at DMK, you can spend thenight at Sleep Box by Miracle, situated in terminal 2.

  • Which is the most ideal ground transportation in Bangkok?

    When you land in Bangkok, you should opt for car rental services if you want the freedom to explore the city. DMK has multiple car rental agencies such as SIXT, Budget, Hertz, Avis, National and Chic. The car rental booths are located in terminals 1 and 2 DMK. On the other hand, at BKK, you will find rental car agencies, including Europcar, Hertz, Avis, Chic, National, Bizcar and Thai, located in Gate 8 near the passenger terminal 8.

  • Are there any family services at SEA?

    SEA offers exceptional family services that parents or guardians flying through the airport can take advantage of with their kids. The airport features a kids’ play area located between Gate A and the central terminal. Nursing mothers can also access private nursing rooms at the airport’s main terminal.

  • What amenities and services can I have access to at SEA?

    While at SEA, you can enjoy a live music performance from Experience the City Music. Alternatively, you can explore the impressive and eclectic collection of modern sculpture, painting, glass, photography and sound art.

Your guide to booking Seattle to Thailand flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 8 weeks before your trip. KAYAK data shows fares in this window are around 17% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for March when flights are typically cheapest and avoid June when prices are at their highest.
  • Flying on Sunday is usually the cheapest. Flights on Saturday cost about 9% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Bangkok Suvarnabhumi (BKK) is the cheapest airport to fly into from Seattle. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Bangkok, which is the most popular destination in Thailand. From there, it's easy to continue on to other popular destinations such as Pattaya, Phuket City and Chiang Mai.
  • If you are flying from Seattle to Thailand, ensure that you arrive at the airport at least 3 hours before your scheduled flight departure time. As such, you will have enough time to go through the immigration, get your boarding pass and arrive at your departure terminal without risking missing your flight. Alternatively, you can check in online through your airline website.
  • Seattle Tacoma International Airport (SEA) has several parking options for passengers who wish to leave their cars at the airport while flying from Seattle to Thailand. The airport features both onsite and offsite parking lots. Therefore, you can opt for the offsite parking lot, which is more affordable than the onsite parking lots, if you plan on an extended stay. The onsite parking lots are located at the terminal direct on the upper floors.
  • Upon your arrival at Suvarnabhumi International Airport (BKK) and looking for specific information, you don’t need to worry. The airport features multiple information booths with friendly staff that are always ready to assist. The information desks are located in the arrivals and departure areas.
  • Don Mueang International Airport (DMK) is equipped with shower facilities that passengers using the airport can utilize after a long flight from Seattle. The shower amenities are located in Miracle Lounge in the Domestic departures terminal 2. Charges may apply, so ensure that you confirm with the management before using the amenities.
  • SEA offers unique services for passengers with reduced mobility. If you are flying through the airport, you can have access to wheelchair services and extra assistance. However, for easy access to these services, you need to call your airline prior to your flight date, informing them of what you might need. On the other hand, DMK and BKK have wheelchair-accessible washrooms, parking lots and elevators.

Reviews of the top 5 airlines serving from Seattle to Thailand

 
Need help choosing which airline to fly with from Seattle to Thailand? 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.
8.5
EVA AirOverall score based on 1552 reviews
8.4Boarding
8.7Crew
8.0Entertainment
8.1Food
8.3Comfort
Airline reviews

They forced me to check a bag. When Kayak sold me these tickets I was not informed of carry on baggage weight limits.

4.0 OkayAnonymous, Jun 2026
Read more EVA Air reviews

They forced me to check a bag. When Kayak sold me these tickets I was not informed of carry on baggage weight limits.

The food was great; the attendants were pleasant. Waiting to onboard felt stressful, as passengers who had connecting flights at SEA had to be verified again for two things before getting a real boarding pass: passport and carry-on luggage weight. The boarding pass issued by another airline (i.e., the first leg of my trip) did not count. The S terminal at SEA was barren, with lots of sensory overloads because every airline was repeatedly broadcasting long lists of names of passengers who had not gone through that verification process. The carry-on luggage weight check seemed futile to me. I saw a woman who opened her over-weight suitcase to move some items into her shoulder bag. She still boarded with two huge bags with her. I assume this check is an endeavor of ensuring fairness of the overhead bin space or optimizing fuel efficiency when gas price is through the roof, but I don't know if either goal is achieved. Nonetheless I respect the crew's dedication to the SOP.

The crew need to be more friendly it seem everything such a rush situation during dinner and breakfast. Smiles to the passenger go such a long way just the service from Seattle to Taipei, service from Taipei to Bangkok were great more pleasant the flight attendant from Thailand she was very nice, as far as entertainment were amazing , wiffi connection was incredible great, I will be able to charged my phone from Seattle to Taipei and from taipei to Bangkok I won’t be able to do so flight attendant told me that because I don’t have the original iPhone charger connection has nothing to do what type of charger I have so she said there is nothing she can do about it. Foods : from Seattle to Taipei were ok no flavor , from Taipei to Bangkok I have chicken teriyaki the rice is overcooked all the flavor stuck on the aluminum wraps , breakfast the congee was on point and delicious. Will I recommend anyone to fly with Eva air go for it so you can experience yourself for myself I won’t fly with them again I’m gonna stick with Singapore airlines instead.

Never went. Got rescheduled with Phillipine Airlines to Bali, which was fine.

The flight from SEA to Taipei was on a Boeing 787-10. Economy seats were unacceptably cramped and the seats themselves were old and lacking cushion. I'm only 5'3" and couldn't cross my legs as my knees were up against the seat in front of me! I could not get WiFi to work most of the time on both flights and crew were invisible except to serve meals. The onboard entertainment also did not work reliably and was very hard to hear through the provided earbuds. The Asian vegetarian meals were interesting. I hope they can provide a fully vegan option though these meals seemed to be already. I appreciate their providing these meals options for vegans. I don't think I'll fly a 787-10 if I can help it. It was the definition of a sardine can in Economy.

Amazing one of the best airlines i have ever traveled with. I live with medical issues called psoriatic arthritis and was in pain on the flight. The flight crew made sure I had fresh ice pack ever hour. Going above an beyond with service and care ⭐️⭐️⭐️⭐️⭐️.

The crews are very efficient. Other airlines should learn from them when it comes to boarding and departing from the airplane. They also display efficiency in serving meals. They don't keep the aisles blocked for hours like some other airlines. The food is poor. Generally the food was unrecognizable and poorly prepared. The only thing that made it better than US flag carriers is that there was a fresh fruit bowl with each meal.

Great experience, comfort and food is delicious. Always great service and one time

The hygiene of the bathrooms were terrible. Urine smells leaked out into the cabin and the seats were really tight, even for a petite woman like myself. Flight attendants did not go through the cabin enough to offer refreshments.

Pleasant, comfortable, and entertaining. All told, ZERO issues with it. And sadly, so far the flight was WAY more comfortable than the hellhole that is "Lambug Beach Resort" at Badian Beach!

I wish there was water passes around. Long Flights with no water Except at the beginning

Actually, this flight would have been better with jus a beverage service and no food.

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.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

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

I did not like how the plane landed. It was not smooth.

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

I don’t think I’ll be flying them again. Tight seats, no flowing air or air nozzles that you can turn air on you, for those who could have motion sickness this would be your worst nightmare. The pilot was great and experienced (which is what you want when flying 12 hours) overall I’m thankful knowledgeable pilots!

For a long-haul flight, the crew did a very good job of keeping the lavatories clean and the aisles clear.

Paid for seat assignments that did not in any way match seats received, and had to upgrade at checkin

A little aged aircraft but overall good. Smooth fight and got us to Bangkok. Thanks.

All was great on flight to Tokyo. The ROOM setup was very comfortable. Definitely will try to do again.

One of the business class panels where we were sitting was broken and it didn’t close. Therefore, the be privacy was limited.

SEA HND sector internet only worked for the last 2.5hrs of flight….. never had this kind of incident with other airlines

The staff is amazing, I cannot stress that enough! The food is really good and snacks at stations to take for yourselves. Economy seating is fine, not the most comfortable, but our friends in Premium Economy said they were very comfortable! Decent entertainment options, but being built in, you have to use their cheap headsets unless you have your own plug in ones. I only have Bluetooth earbuds.

Service is great. Seat is ok. Not much storage room and seat is hard but seat topper was nice. Cabin was very warm most of the flight. Washoku Food was good.

Great service, wonderful meals, excellent entertainment, clean bathrooms, top notch experience

It was very good. Lots of room with superior food and service. I will not hesitate to fly ANA in the future!

I chose my seat for the window: there wasn’t a window in my row. The charging function for my device didn’t work.

I purchased my two tickets on February 2025. Tickets were by each other, aisle and window. However, when we were boarded the assigned seats were one by the window and the other one in the middle of the four seated row. It was a horrible experience and we had to tolerate 17 hours of flight seating by different people. If the airline changes the seat arrangement, it should have the decency to notify the passengers in advance. I have checked my return tickets to Los Angeles, and I have noticed that they are not by each other and I don’t know what to do. I hope someone contacts me and rectify this mistake.

I had selected seats together for my family of three when I first booked my tickets in February. However, I realized only when I checked in at the airport that the seats I had selected were no longer assigned to us and we were completely scattered across three different middle seats instead of being seated together! After requesting the Singapore staff to have us seated together on a full flight, they managed to find something but it was right next to the rest rooms and the whole journey of 15+ hours was really unpleasant. They said that the seat selection isn't locked and the airline can reallocate the seats anytime. No one ever told us this and it was a terribly unpleasant surprise. Will avoid Kayak/underpricer and Singapore in future

The friendliness of the attendants, and the quality of the service.

Flight attendants were awesome! Very helpful and patients. Some food were good but maybe not serving fish that kinda make the whole aircraft smell fishy. The “fried pork” was tasty but too much skin so it doesnt taste that great.

No frills airline with minimal leg room and no entertainment

toilets could be cleaned more frequently, everything else was pretty good.

The seats were more narrow than at other lines. Food was mediocre (economy class)

I was traveling with my 3 minor children, one leg I was seated two aisles behind them. On the longest leg I would have preferred sitting across the aisle from them, not behind. My youngest is 4yos. I understand airplane seating configurations are not the airlines problem but seating the one adult with a reservation apart from the minors was very difficult.

Left hr late & arrived 1hr late luggage was slow to be offloaded! The flight crew & food were good! Movie selection was ok!

Airport lounge for business class is too crowded and not comfortable. Poor foods and facilities. Boarding was delayed. A lot of coughing people in the flight even in the business class, which indicated poor screening and health risks.

Waited a long time at JFK to board with no information being readily available.Left about 45 minutes late and it was 2:45 AM in JFK.Nothing todo. Second deck of the Airbus is more comfortable or seems that way because there is less people. Food was OK. The food on secondleg was better as we had ordered it before hand. We thought we had did that on the long first leg but we were told we did not. Cabin crew was generally nice. There are people who lean back when eating as they wait for food to be delivered and know no one will check -- drag. TV selection was awful movies OK. Comfortable all in all.

Not enough seat cushion. Butt was hurting especially on long flight. Not enough movie selection. Entertainment was outdated. Coffee served was cold. Other than that flight was good.

Humm, I should have known that the seat I peaked on my flight from Inchon to Manila was designed for a toddler or very small person.

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

Kayak uses scammer sites to steal money from their victims.

When one asks for water because they are dehydrated, bring more then a sip or two in a small cup. Bring them a whole bottle.

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

It was all perfect and very pleasant for such long flights

The boarding process was good. The toilet could be better maintained.

It’s wonderful service aboard. Delayed for departure but arrival in Korea went so well.

More options for your flight from Seattle to Thailand

Complete your trip to Thailand with a hotel stay or car rental