$398+ Cheap flights from Washington to Don Mueang Intl (DMK)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DMK
Aug 5 — Aug 121
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Washington to Don Mueang Intl
Keep the following information in mind while searching for Washington to Don Mueang Intl flight deals. Data was last updated July 31, 2025.
Round-trip from | $883 (Mytrip) |
|---|---|
One-way from | $398 (Mytrip) |
Popular in | December |
Cheapest in | February |
Average price | $1,039 |
Find flight deals from Washington to Don Mueang Intl
Cheapest flights from Washington to Don Mueang IntlExplore the most affordable flight options available from Washington to Don Mueang Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.
Explore the most affordable flight options available from Washington to Don Mueang Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.
This Mytrip deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/25:30 amSEA - DMK
2 stops26h 45mMultiple Airlines
Thu 10/211:20 amDMK - SEA
2 stops35h 25mMultiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$883
This Mytrip deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:15 amPDX - DMK
2 stops26h 00mMultiple Airlines
Mon 9/82:40 amDMK - PDX
2 stops26h 06mMultiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$1,114
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to Don Mueang Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Washington to Bangkok Don Mueang Intl Airport that are best for you.
Fly from
Washington
Fly to
Don Mueang Intl
Route
Depart
Return
Price
SeattleBangkok
SEA - DMK
SEADMK
Seattle/Tacoma Intl
Tue 9/2
5:30 am-10:15 pm
2 stops26h 45m
Bangkok Don Mueang Intl
Thu 10/2
11:20 am-8:45 am
2 stops35h 25m
$883
PortlandBangkok
PDX - DMK
PDXDMK
Portland
Wed 8/27
6:15 am-10:15 pm
2 stops26h 00m
Bangkok Don Mueang Intl
Mon 9/8
2:40 am-2:46 pm
2 stops26h 06m
$1,114
SeattleBangkok
SEA - DMK
SEADMK
Seattle/Tacoma Intl
Sun 8/31
5:30 am-10:15 pm
2 stops26h 45m
$398
PortlandBangkok
PDX - DMK
PDXDMK
Portland
Thu 9/18
6:15 am-10:15 pm
2 stops26h 00m
$496
Best time to book a flight from Washington to Don Mueang Intl
Have a flexible travel schedule? Discover the best time to fly to Don Mueang Intl from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington to Bangkok Don Mueang Intl Airport
What is the cheapest time of day to fly from WA to DMK?
Find hourly flight availability from Washington to Don Mueang Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.
When flying from State of Washington to Bangkok Don Mueang Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.