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Cheap flights from Seattle (SEAA) to Bangkok (BKKT)

Compare Seattle 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 to Bangkok

Looking for a cheap last-minute deal or the best return flight from Seattle to Bangkok? If you want to travel next month, return fares start from $1,096. Find the lowest prices on one-way and return tickets right here.
Bangkok.$375 per passenger.Departing Tue, 15 Sep.One-way flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Tue, 15 Sep, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $375, select.
Bangkok.$424 per passenger.Departing Sun, 30 Aug.One-way flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Sun, 30 Aug, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $424, select.
Bangkok.$530 per passenger.Departing Thu, 1 Oct.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Seattle / Tacoma International on Thu, 1 Oct, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $530, select.
Bangkok.$538 per passenger.Departing Tue, 14 Jul.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Seattle / Tacoma International on Tue, 14 Jul, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $538, select.
Bangkok.$540 per passenger.Departing Mon, 2 Nov.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Seattle / Tacoma International on Mon, 2 Nov, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $540, select.
Bangkok.$548 per passenger.Departing Sun, 18 Apr.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Seattle / Tacoma International on Sun, 18 Apr, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $548, select.
Bangkok.$552 per passenger.Departing Wed, 3 Feb.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Seattle / Tacoma International on Wed, 3 Feb, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $552, select.
Bangkok.$552 per passenger.Departing Thu, 28 Jan.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Seattle / Tacoma International on Thu, 28 Jan, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $552, select.
Bangkok.$552 per passenger.Departing Tue, 29 Dec.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Seattle / Tacoma International on Tue, 29 Dec, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $552, select.
Bangkok.$552 per passenger.Departing Mon, 22 Mar.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Seattle / Tacoma International on Mon, 22 Mar, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $552, select.
Bangkok.$594 per passenger.Departing Tue, 4 May.One-way flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Tue, 4 May, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $594, select.
Bangkok.$796 per passenger.Departing Sun, 6 Jun.One-way flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Seattle / Tacoma International on Sun, 6 Jun, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $796, select.

Find the cheapest month to fly from Seattle to Bangkok

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Bangkok flights are currently cheapest in September.
Jul
from $538
Aug
from $424
Sep
from $375
Oct
from $530
Nov
from $540
Dec
from $552
Jan
from $552
Feb
from $552
Mar
from $552
Apr
from $548
May
from $594
Jun
from $796

Alternative Seattle to Bangkok routes

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

Don Mueang

21km from central Bangkok
Closest
from $598
Search flights

Bangkok Suvarnabhumi

29km from central Bangkok
Cheapest
from $375
Search flights

Seattle to Bangkok: Flight information

The things to know before you go.
Cheapest flight found$375
Cheapest month to flySeptember

Finding cheap flights from Seattle 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 to Bangkok is $839. 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 to Bangkok. But we found flights with one or more stops from $839.
As of July 2026, there are no flights flying from Seattle to Bangkok.
The cheapest month to fly from Seattle to Bangkok is usually September.
If you're flying from Seattle, the cheapest airport near Bangkok is Bangkok Suvarnabhumi – which is 28.6 km away from the centre of Bangkok. We've found flights into this airport from $839.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Bangkok on Tuesday, 15 September 2026.
No airlines currently offer direct flights between Seattle 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 July, the average temperature is usually around 28°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.
The cheapest airline that flies to Bangkok is Singapore Airlines .

Travelling from Seattle to Bangkok: what you need to know

  • Seattle has two main airports where you can start your adventure. Explore your options for reserving a flight from Seattle to Bangkok flying out of Seattle / Tacoma International Airport (SEA) or Seattle Lake Union SPB Airport (LKE).

  • Bangkok Suvarnabhumi Airport (BKK) and Don Mueang Airport (DMK) are Bangkok's primary gateways.

  • Bangkok's timezone is UTC+7, which makes Bangkok 15 hours ahead of Seattle.

  • To ensure you make it on your Seattle to Bangkok flight, allow plenty of time for things like check-in and baggage drop. Arriving two hours ahead of international departures and one hour before domestic flights is the standard rule.

  • During popular months like July, you'll want to get to the airport earlier than usual. Arrive two hours before a domestic departure and four hours ahead for international flights when you travel during peak periods in general.

How to find the cheapest flights from Seattle to Bangkok

  • Don't leave things to the last moment. You're more likely to get cheap Seattle to Bangkok flights if you book early. Airlines often have some great early bird rates.

  • If you can be flexible with your travel plans, use the 'Whole month' tool. It'll show you the lowest price in each month when searching for your plane ticket from Seattle to Bangkok.

  • Never miss a deal on cheap flights from Seattle to Bangkok by creating a Price Alert. You'll receive an email or push notification on the app when a lower fare becomes available.

  • Find an affordable Seattle to Bangkok flight with the help of our filters. Choose your ideal times, airlines and number of stops, then sort the results by 'Cheapest' to see the best deals.

Flying from Seattle

Seattle / Tacoma International Airport (SEA)

  • Stopovers are the perfect opportunity to break up your trip — and maybe even explore another city. When searching for Seattle to Bangkok flights leaving from Seattle / Tacoma International Airport, uncheck the 'Direct flights only' box to see where you can visit along the way. Here are some options to consider:

    • Shanghai Pudong Airport (PVG)

    • Manila Ninoy Aquino Airport (MNL)

    • Taipei Taiwan Taoyuan Airport (TPE)

  • Located around 19 kilometres from the centre of Seattle, SEA can be reached in about 25 minutes by car (depending on traffic). The journey by public transport takes roughly 35 minutes.

  • Want a handy hotel close to Seattle / Tacoma International Airport? If you've booked an early flight from Seattle to Bangkok, these stays will have you nice and close to your departure gate:

  • Seattle / Tacoma International Airport maintains a solid on-time performance, so flight disruptions are less likely. Departures from SEA touch down on schedule 80% of the time.

Arriving in Bangkok

Bangkok Suvarnabhumi Airport (BKK)

  • The distance from Bangkok Suvarnabhumi Airport (BKK) to central Bangkok is roughly 27 kilometres. It'll take you about 35 minutes to get to the centre driving.

  • If you're taking public transport, expect a journey time of around 35 minutes.

  • The last thing you need is a lengthy journey to your hotel if you're arriving on a late flight from Seattle to Bangkok. Reserve one of these accommodation options near BKK instead:

  • Travel at your own speed with a Bangkok Suvarnabhumi Airport rental car. Book your wheels from Chic Car Rent, asap car rental or Hertz and experience more of Bangkok and beyond.

  • Lock in the lowest price by reserving your vehicle from Bangkok Suvarnabhumi Airport around four weeks in advance of your trip.

Don Mueang Airport (DMK)

  • The centre of Bangkok is about 21 kilometres from Don Mueang Airport (DMK). As soon as your flight from Seattle to Bangkok has touched down and you've made your way to arrivals, expect a drive of around 35 minutes.

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

  • You'll find some comfortable places to call home for the night near DMK. Settle in and get cosy after your Seattle to Bangkok flight at one of these well-located options:

  • Chic Car Rent, asap car rental and Hertz make collecting a Don Mueang Airport rental car simple. These suppliers are located in or around the terminal and will have you ready to go in a flash.

  • Score the best price by securing your ride from DMK three weeks in advance. You can also expect to have a wider selection of vehicles.

Best time to go to Bangkok

  • January is the most popular month for flights from Seattle to Bangkok. To steer clear of the crowds, visit Bangkok in March.

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

  • Look for cheap flights from Seattle to Bangkok in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 19ºC (66ºF) and 34ºC (93ºF) on average.

More about Bangkok

  • Start your Bangkok trip right by choosing the perfect place to stay. As soon as you've booked your flight from Seattle to Bangkok, browse our selection of hotels including:

  • The Grand Palace and The Temple of the Emerald Buddha are just two of the top attractions to add to your Bangkok to-do list. Keep the adventure rolling by checking out Songkran Festival Silom.

More travel options

Plan the rest of your trip from Seattle to Bangkok

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.