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Cheap Flights from Seattle (SEA) to Bangkok (BKKT)

Compare Seattle / Tacoma International to Bangkok flight deals

Find the cheapest month or even day of the year to fly to Bangkok

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Flight deals from Seattle / Tacoma International to Bangkok

Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International Airport to Bangkok? If you want to travel next month, return fares start from $1,438. Find the lowest prices on one-way and return tickets right here.
Bangkok.$978 per passenger.Departing Thu, 8 Oct, returning Thu, 15 Oct.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Thu, 8 Oct, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Thu, 15 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $978, select.
Bangkok.$998 per passenger.Departing Thu, 3 Sep, returning Tue, 10 Nov.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Thu, 3 Sep, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Tue, 10 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $998, select.
Bangkok.$1,015 per passenger.Departing Thu, 3 Sep, returning Mon, 7 Sep.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Thu, 3 Sep, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Mon, 7 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,015, select.
Bangkok.$1,034 per passenger.Departing Thu, 27 Aug, returning Fri, 11 Sep.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Thu, 27 Aug, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Fri, 11 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,034, select.
Bangkok.$1,047 per passenger.Departing Sun, 1 Nov, returning Tue, 10 Nov.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Sun, 1 Nov, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Tue, 10 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,047, select.
Bangkok.$1,087 per passenger.Departing Sat, 31 Oct, returning Tue, 10 Nov.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Sat, 31 Oct, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Tue, 10 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,087, select.
Bangkok.$1,145 per passenger.Departing Tue, 26 Jan, returning Wed, 3 Feb.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Tue, 26 Jan, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Wed, 3 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,145, select.
Bangkok.$1,150 per passenger.Departing Thu, 8 Oct, returning Mon, 7 Dec.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Thu, 8 Oct, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Mon, 7 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,150, select.
Bangkok.$1,153 per passenger.Departing Tue, 30 Mar, returning Wed, 7 Apr.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Tue, 30 Mar, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Wed, 7 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,153, select.
Bangkok.$1,154 per passenger.Departing Tue, 23 Feb, returning Mon, 8 Mar.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Tue, 23 Feb, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Mon, 8 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,154, select.
Bangkok.$1,159 per passenger.Departing Tue, 24 Nov, returning Tue, 8 Dec.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Tue, 24 Nov, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Tue, 8 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,159, select.
Bangkok.$1,210 per passenger.Departing Tue, 12 Jan, returning Thu, 28 Jan.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Tue, 12 Jan, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Thu, 28 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,210, select.
Bangkok.$1,211 per passenger.Departing Thu, 4 Feb, returning Sat, 6 Feb.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Thu, 4 Feb, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Sat, 6 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,211, select.
Bangkok.$1,212 per passenger.Departing Tue, 1 Dec, returning Fri, 25 Dec.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Tue, 1 Dec, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Fri, 25 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,212, select.
Bangkok.$1,215 per passenger.Departing Sun, 27 Sep, returning Wed, 7 Oct.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Sun, 27 Sep, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Wed, 7 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,215, select.
Bangkok.$1,216 per passenger.Departing Thu, 1 Apr, returning Thu, 22 Apr.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Thu, 1 Apr, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Singapore Airlines, departs from Bangkok Suvarnabhumi on Thu, 22 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,216, select.

Find the cheapest month to fly from Seattle / Tacoma International to Bangkok

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Bangkok flights are currently cheapest in October.
May
from $1,659
Jun
from $1,438
Jul
from $1,395
Aug
from $1,323
Sep
from $1,015
Oct
from $978
Nov
from $1,047
Dec
from $1,212
Jan
from $1,210
Feb
from $1,211
Mar
from $1,224
Apr
from $1,216

Alternative Seattle / Tacoma International to Bangkok routes

Looking for the cheapest, fastest or easiest route from Seattle / Tacoma International to Bangkok? You could fly into the following airports instead.

Don Mueang

21km from central Bangkok
Closest
from $1,751
Search flights

Bangkok Suvarnabhumi

29km from central Bangkok
Cheapest
from $978
Search flights

Seattle to Bangkok: Flight information

The things to know before you go.
Cheapest flight found$978
Cheapest month to flyOctober

Finding cheap flights from Seattle / Tacoma International to Bangkok: Frequently asked questions

There are 2 airports in Bangkok: Don Mueang and Bangkok Suvarnabhumi.
The best price we found for a return flight from Seattle / Tacoma International to Bangkok is $978. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle / Tacoma International to Bangkok. But we found flights with one or more stops from $978.
As of May 2026, there are no flights flying from Seattle / Tacoma International to Bangkok.
The cheapest month to fly from Seattle / Tacoma International to Bangkok is usually October.
If you're flying from Seattle / Tacoma International Airport, the cheapest airport near Bangkok is Bangkok Suvarnabhumi – which is 28.5 km away from the centre of Bangkok. We've found flights into this airport from $978.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Bangkok on Thursday, 8 October 2026.
No airlines currently offer direct flights between Seattle / Tacoma International Airport and Bangkok. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Bangkok but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Bangkok is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 30°C. April is typically the warmest month in Bangkok, when it usually averages around 35°C. You can expect the least rain in December. The coldest month is November, with temperatures averaging 22°C. The rainiest month is September.
Currently, Singapore Airlines offers the cheapest flight tickets to Bangkok.

Flying from Seattle-Tacoma International Airport (SEA) to Bangkok: what you need to know

  • Seattle-Tacoma International Airport is located in Seattle. Based in the UTC+7 timezone, Bangkok is 15 hours ahead of Seattle.

  • Leave enough time to make your SEA to Bangkok flight. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months like July, it's a good idea to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead of an international flight whenever you're flying during peak periods in general.

  • We make it simple to book plane tickets from SEA to Bangkok with a stopover. To see your options, uncheck 'Direct flights only.' Next, choose a flight that has a stop long enough to see the sights of your chosen city. Top stopovers include:

    • Shanghai Pudong International Airport (PVG)

    • Manila Ninoy Aquino International Airport (MNL)

    • Vancouver International Airport (YVR)

  • Located around 18 kilometres from central Seattle, SEA can be reached in about 25 minutes by car, depending on traffic. The journey on public transport takes roughly 35 minutes.

  • In search of a hotel near SEA? If you're boarding an early flight from Seattle-Tacoma International Airport to Bangkok, these accommodation options set you up for a seamless send-off:

  • Seattle-Tacoma International Airport maintains a solid on-time performance, reducing your chances of a delayed flight. Departures from SEA land at their destination as scheduled 80% of the time.

How to find the cheapest flights from Seattle-Tacoma International Airport (SEA) to Bangkok

  • $521 is the lowest price we've seen for a one-way Seattle-Tacoma International Airport to Bangkok flight. A return plane ticket right now is $978. Depending on the availability when you book, these fares may change.

  • Booking in advance is often the key to scoring a cheap flight from SEA to Bangkok. Flight prices rise as demand increases, so the nearer you get to departure, the more you'll likely pay.

  • The 'Whole month' tool will show you the cheapest tickets from Seattle-Tacoma International Airport to Bangkok across the month. It's an easy way to find a bargain if your trip dates are flexible.

  • Spend less time searching for cheap flights from SEA to Bangkok by setting up a Price Alert. You'll receive an email or notification through the app when a special offer becomes available.

  • Find an affordable flight from Seattle-Tacoma International Airport to Bangkok with the help of our filters. Select your preferred times, airlines and number of stops, then sort the results by 'Cheapest' for the best deals.

Airports in Bangkok

Bangkok Suvarnabhumi International Airport (BKK)

  • Bangkok Suvarnabhumi International Airport (BKK) is around 31 kilometres from central Bangkok. If you're opting for a ride-share or a taxi, the drive takes about 35 minutes.

  • It takes around 35 minutes to get there using public transport.

  • The last thing you need is a long journey to your hotel if you're getting in late on a flight from Seattle-Tacoma International Airport to Bangkok. Check in to one of these accommodation options near BKK instead:

  • For the lowest price, reserve your ride from Bangkok Suvarnabhumi International Airport about four weeks in advance of your flight from SEA to Bangkok.

Bangkok Don Mueang International Airport (DMK)

  • Once your flight from Seattle-Tacoma International Airport to Bangkok has hit the tarmac, you can make your way to the city centre in about 35 minutes by car. Central Bangkok is roughly 24 kilometres from Bangkok Don Mueang International Airport (DMK).

  • You can expect the journey to take about 1 hour 5 minutes on public transport.

  • Place the 'Do not disturb' sign on your door and unwind at a hotel near DMK. Here are a few options where you can take a load off after your SEA to Bangkok flight:

  • Don't pay more than you need to. Booking your ride three weeks ahead of your arrival at DMK can land you a better rate.

Best time to go to Bangkok

  • May is the quietest month for flights from Seattle-Tacoma International Airport to Bangkok, while February is the most popular. Figure out the ideal time to go to Bangkok based on whether you like a laid-back vibe or a lively atmosphere.

  • Before locking in your Seattle-Tacoma International Airport to Bangkok plane ticket, think about what kind of weather you prefer. April is the warmest month in Bangkok, with temperatures ranging from 26ºC (79ºF) to 37ºC (99ºF).

  • If you'd rather travel in cooler conditions, search for a cheap ticket from SEA to Bangkok in January when temperatures average between 19ºC (66ºF) and 34ºC (93ºF).

More about Bangkok

  • Start your Bangkok trip right by choosing the ideal place to stay. After booking your flight from Seattle-Tacoma International Airport to Bangkok, browse our range of accommodation options including:

  • Every great adventure has to include a little sightseeing. Wat Phra Kaew, Grand Palace and Songkran Festival Silom are must-do's during your Bangkok adventure.

Explore more of Thailand

  • Bangkok is always a good idea, but there are so many other parts of Thailand you'll want to see. About 467 kilometres northeast of Bangkok, a visit to Udon Thani will keep you on the move. Don't miss top attractions like Thai-Chinese Cultural Centre, Wat Pho Chai and Wat Burapa Wanaram.

  • If you're looking to explore another great destination in Thailand, head for Nakhon Ratchasima, roughly 225 kilometres northeast of Bangkok. Night Safari Korat, Wat Chai Mongkol and Wat Na Pha That are among its highlights.

Plan the rest of your trip from Seattle to Bangkok

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.