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Don Mueang Intl

$417+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DMK
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$841
(Mytrip)

One-way from

$417
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$784
From Washington to Bangkok Don Mueang Intl
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One-way flight from Washington to Bangkok Don Mueang Intl
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Highest demand for flights based on searches. 6% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Washington to Don Mueang Intl

Cheapest flights from Washington to Don Mueang Intl
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 September 17, 2025.

This Mytrip deal was found by Cheapflights users on 9/16. 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 11/1112:10 amSEA - DMK
2 stops33h 25mMultiple Airlines
Wed 11/267:55 pmDMK - SEA
2 stops33h 00mMultiple Airlines
Deal found 9/16$841
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Sun 11/1612:10 amSEA - DMK
2 stops33h 25mMultiple Airlines
Fri 11/215:25 pmDMK - SEA
2 stops35h 30mMultiple Airlines
Deal found 9/16$854
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Mon 11/1012:10 amSEA - DMK
2 stops32h 00mMultiple Airlines
Tue 11/187:40 amDMK - SEA
2 stops21h 15mMultiple Airlines
Deal found 9/15$865
This Trip.com deal was found by Cheapflights users on 9/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/168:37 pmPDX - DMK
2 stops37h 33mMultiple Airlines
Mon 9/223:05 amDMK - PDX
2 stops32h 20mMultiple Airlines
Deal found 9/16$877
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Mon 11/1012:10 amSEA - DMK
2 stops30h 20mMultiple Airlines
Tue 11/257:45 amDMK - SEA
2 stops21h 10mMultiple Airlines
Deal found 9/15$883
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:37 pmPDX - DMK
2 stops37h 33mMultiple Airlines
Tue 9/236:15 amDMK - PDX
2 stops26h 55mMultiple Airlines
Deal found 9/15$894
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Thu 9/181:10 amSEA - DMK
2 stops26h 25mMultiple Airlines
Sun 9/217:30 amDMK - SEA
2 stops25h 50mMultiple Airlines
Deal found 9/15$898
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/195:30 pmPDX - DMK
2 stops37h 00mMultiple Airlines
Thu 11/277:45 amDMK - PDX
2 stops37h 33mMultiple Airlines
Deal found 9/15$911
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Mon 9/291:30 amSEA - DMK
1 stop20h 15mMultiple Airlines
Tue 10/77:25 amDMK - SEA
1 stop25h 25mMultiple Airlines
Deal found 9/16$914
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:30 pmSEA - DMK
1 stop33h 40mMultiple Airlines
Fri 11/710:00 pmDMK - SEA
2 stops25h 00mMultiple Airlines
Deal found 9/15$920
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Mon 9/221:10 amSEA - DMK
2 stops32h 05mMultiple Airlines
Tue 10/77:30 amDMK - SEA
2 stops25h 50mMultiple Airlines
Deal found 9/14$938
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:30 pmSEA - DMK
1 stop23h 10mMultiple Airlines
Fri 11/147:10 pmDMK - SEA
2 stops27h 50mMultiple Airlines
Deal found 9/15$946

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 September 17, 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 11/11

12:10 am-12:35 am

2 stops33h 25m

Bangkok Don Mueang Intl

Wed 11/26

7:55 pm-1:55 pm

2 stops33h 00m

$841

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Mon 11/10

12:10 am-11:10 pm

2 stops32h 00m

Bangkok Don Mueang Intl

Tue 11/18

7:40 am-1:55 pm

2 stops21h 15m

$865

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Mon 11/10

12:10 am-9:30 pm

2 stops30h 20m

Bangkok Don Mueang Intl

Tue 11/25

7:45 am-1:55 pm

2 stops21h 10m

$883

PortlandBangkok

PDX - DMK

PDXDMK

Portland

Wed 11/19

5:30 pm-9:30 pm

2 stops37h 00m

Bangkok Don Mueang Intl

Thu 11/27

7:45 am-6:18 am

2 stops37h 33m

$911

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Sun 10/12

1:10 am-5:35 pm

2 stops26h 25m

Bangkok Don Mueang Intl

Mon 10/20

11:10 am-7:20 pm

2 stops22h 10m

$918

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Sun 11/2

12:10 am-7:50 pm

2 stops28h 40m

Bangkok Don Mueang Intl

Thu 11/20

6:45 pm-7:10 am

2 stops27h 25m

$935

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Sun 11/9

9:30 pm-11:25 am

1 stop22h 55m

Bangkok Don Mueang Intl

Mon 12/1

10:00 pm-8:00 am

2 stops25h 00m

$949

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Mon 9/22

1:10 am-5:05 pm

2 stops25h 55m

Bangkok Don Mueang Intl

Tue 9/30

6:15 am-7:20 pm

2 stops27h 05m

$998

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Fri 10/3

11:35 pm-11:25 am

1 stop21h 50m

Bangkok Don Mueang Intl

Sun 10/12

8:10 am-7:15 pm

2 stops25h 05m

$1,012

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Mon 11/3

11:45 pm-11:50 am

1 stop21h 05m

Bangkok Don Mueang Intl

Mon 11/17

7:45 am-3:05 pm

1 stop22h 20m

$1,024

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 31 results
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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 September 17, 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.

Related info for your journey

Find useful and relevant information for your journey from Washington to Don Mueang Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Washington to Don Mueang Intl that include hotel bookings?

    Yes. In addition to deals on Washington to Don Mueang Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Don Mueang Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Don Mueang Intl.

  • Can I find deals for business class flights from Washington to Don Mueang Intl?

    Yes. Cheapflights offers flight deals from Washington to Don Mueang Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Alternative routes for Washington to Don Mueang Intl

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