$731 Cheap Flights from Seattle (SEA) to Bangkok (DMK)

View $731 flight on Mon, Jul 6, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Don Mueang Intl. Airport (DMK)

Cheap Flights from Seattle to Bangkok (SEA-DMK)

Prices were available within the past 7 days and start at $731 for one-way flights and $1,214 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

EVA Airways
Mon, Apr 13 - Mon, Apr 27
SEA
Seattle
DMK
Bangkok
$1,214 Roundtrip, found 6 hours ago
$1,214
Roundtrip
found 6 hours ago
Select EVA Airways flight, departing Mon, Apr 13 from Seattle to Bangkok, returning Mon, Apr 27, priced at $1,214 found 6 hours ago
EVA Airways
Mon, Apr 13 - Mon, Apr 27
SEA
Seattle
DMK
Bangkok
$1,216 Roundtrip, found 6 hours ago
$1,216
Roundtrip
found 6 hours ago
Select EVA Airways flight, departing Mon, Apr 13 from Seattle to Bangkok, returning Mon, Apr 27, priced at $1,216 found 6 hours ago
EVA Airways
Tue, Jan 27 - Tue, Feb 17
SEA
Seattle
DMK
Bangkok
$1,216 Roundtrip, found 1 day ago
$1,216
Roundtrip
found 1 day ago
Select EVA Airways flight, departing Tue, Jan 27 from Seattle to Bangkok, returning Tue, Feb 17, priced at $1,216 found 1 day ago
EVA Airways
Mon, Apr 13 - Mon, Apr 27
SEA
Seattle
DMK
Bangkok
$1,219 Roundtrip, found 6 hours ago
$1,219
Roundtrip
found 6 hours ago
Select EVA Airways flight, departing Mon, Apr 13 from Seattle to Bangkok, returning Mon, Apr 27, priced at $1,219 found 6 hours ago
EVA Airways
Mon, Apr 13 - Mon, Apr 27
SEA
Seattle
DMK
Bangkok
$1,221 Roundtrip, found 6 hours ago
$1,221
Roundtrip
found 6 hours ago
Select EVA Airways flight, departing Mon, Apr 13 from Seattle to Bangkok, returning Mon, Apr 27, priced at $1,221 found 6 hours ago
EVA Airways
Thu, Jan 15 - Thu, Jan 22
SEA
Seattle
DMK
Bangkok
$1,259 Roundtrip, found 1 day ago
$1,259
Roundtrip
found 1 day ago
Select EVA Airways flight, departing Thu, Jan 15 from Seattle to Bangkok, returning Thu, Jan 22, priced at $1,259 found 1 day ago
EVA Airways
Thu, Jan 15 - Thu, Jan 22
SEA
Seattle
DMK
Bangkok
$1,261 Roundtrip, found 1 day ago
$1,261
Roundtrip
found 1 day ago
Select EVA Airways flight, departing Thu, Jan 15 from Seattle to Bangkok, returning Thu, Jan 22, priced at $1,261 found 1 day ago
EVA Airways
Sat, Mar 7 - Sat, Mar 21
SEA
Seattle
DMK
Bangkok
$1,294 Roundtrip, found 3 hours ago
$1,294
Roundtrip
found 3 hours ago
Select EVA Airways flight, departing Sat, Mar 7 from Seattle to Bangkok, returning Sat, Mar 21, priced at $1,294 found 3 hours ago
EVA Airways
Sat, Mar 7 - Sat, Mar 21
SEA
Seattle
DMK
Bangkok
$1,296 Roundtrip, found 3 hours ago
$1,296
Roundtrip
found 3 hours ago
Select EVA Airways flight, departing Sat, Mar 7 from Seattle to Bangkok, returning Sat, Mar 21, priced at $1,296 found 3 hours ago
EVA Airways
Fri, Apr 10 - Sat, Apr 18
SEA
Seattle
DMK
Bangkok
$1,296 Roundtrip, found 4 days ago
$1,296
Roundtrip
found 4 days ago
Select EVA Airways flight, departing Fri, Apr 10 from Seattle to Bangkok, returning Sat, Apr 18, priced at $1,296 found 4 days ago

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Alternative airports near Bangkok

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Suvarnabhumi Intl. BKK. Cheapest option available. Average driving time to city center is 23 minutes. Flights from $1,376
BKK
Suvarnabhumi Intl.
Cheapest
Average driving time to city center23 min
Flights from $1,376
Flights from Seattle (SEA) to Bangkok (DMK)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Don Mueang Intl.
Roundtrip price
$1,213
Distance
7439 mi

Seattle to Bangkok Flights

The cheapest times to fly from Seattle to Bangkok

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Bangkok are during the month of April. You can find some of the cheapest flights from Seattle to Bangkok with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Bangkok

Sunday is one of the best days to book for cheap flights from Seattle to Bangkok: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Bangkok

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Bangkok in 2026. You can also book with separate airlines for your outbound and return journeys, from $731 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Bangkok flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Bangkok airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Don Mueang Intl. Airport (DMK) cost?
Secure a cheap one-way flight from $731 or cheap return flight from $1,214 from Seattle - Tacoma Intl. Airport (SEA) to Don Mueang Intl. Airport (DMK) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Don Mueang Intl. Airport (DMK)?
Flying in April is a great way to save, as it's the cheapest month for flights between SEA and DMK. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Don Mueang Intl. Airport (DMK)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SEA to DMK flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Don Mueang Intl. Airport (DMK)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Don Mueang Intl. Airport (DMK) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to DMK?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on a number of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Don Mueang Intl. Airport (DMK)?
To land at Don Mueang Intl. Airport (DMK) on time, opt for a flight that leaves from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Don Mueang Intl. Airport (DMK) last-minute?
Waiting until right before your break to book a flight from SEA to DMK often results in higher prices. While you may come across some last-minute offers, there's no guarantee. Allow some flexibility in your schedule for the best chance of snagging a bargain.
Is it cheaper to book a SEA to DMK flight and hotel package?
You can save money by securing a SEA to DMK flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your ideal flights and accommodations, you can add extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Don Mueang Intl. Airport (DMK)?
In most cases, you can cancel or reschedule your SEA to DMK flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you'd like more details, go to our Customer Service portal.

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*Available to One Key members.