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Cheap flights from Washington, D.C. to Bangkok from $483

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Bangkok departing on 10/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. to Bangkok

Cheap round-trip flights

Logo
10:10 pm - 7:15 pmIAD-DMK
34h 05m2 stops
Logo
8:15 pm - 3:50 pmDMK-IAD
55h 35m2 stops
$1,074
Find Deal
Tue, Oct 28 - Tue, Nov 18
Logo
9:10 pm - 11:05 amIAD-DMK
25h 55m2 stops
Logo
12:05 pm - 3:50 pmDMK-IAD
39h 45m2 stops
$1,075
Find Deal
Sat, Nov 8 - Sun, Nov 23
Logo
9:10 pm - 8:15 amIAD-DMK
47h 05m2 stops
Logo
8:15 pm - 3:50 pmDMK-IAD
55h 35m2 stops
$1,077
Find Deal
Sun, Feb 8 - Sat, Feb 28
Logo
9:10 pm - 3:35 pmIAD-DMK
30h 25m2 stops
Logo
8:15 pm - 3:50 pmDMK-IAD
55h 35m2 stops
$1,078
Find Deal
Sat, Feb 7 - Sun, Mar 1
Logo
10:05 pm - 11:05 amIAD-DMK
26h 00m2 stops
Logo
2:00 pm - 4:10 pmDMK-IAD
37h 10m2 stops
$1,079
Find Deal
Mon, Oct 13 - Thu, Oct 23
Logo
9:10 pm - 11:05 amIAD-DMK
25h 55m2 stops
Logo
12:05 pm - 3:50 pmDMK-IAD
39h 45m2 stops
$1,081
Find Deal
Mon, Nov 3 - Mon, Nov 17
Logo
9:10 pm - 7:15 pmIAD-DMK
34h 05m2 stops
Logo
12:05 pm - 3:50 pmDMK-IAD
39h 45m2 stops
$1,082
Find Deal
Sun, Jan 18 - Wed, Feb 4
Logo
10:05 pm - 11:05 amIAD-DMK
26h 00m2 stops
Logo
8:15 pm - 4:50 pmDMK-IAD
55h 35m2 stops
$1,095
Find Deal
Mon, Oct 13 - Tue, Oct 28
Logo
9:10 pm - 3:35 pmIAD-DMK
30h 25m2 stops
Logo
9:15 am - 3:50 pmDMK-IAD
42h 35m2 stops
$1,098
Find Deal
Tue, Feb 10 - Tue, Feb 24
Logo
10:05 pm - 11:50 amIAD-DMK
26h 45m2 stops
Logo
8:15 pm - 4:10 pmDMK-IAD
54h 55m2 stops
$1,100
Find Deal
Sat, Oct 4 - Sat, Oct 18

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Bangkok Don Mueang Intl Airport 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, momondo users made 832,500 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Bangkok Don Mueang Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Tue 10/28

10:10 pm-7:15 pm

2 stops34h 05m

Bangkok Don Mueang Intl

Tue 11/18

8:15 pm-3:50 pm

2 stops55h 35m

$1,074

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Sat 11/8

9:10 pm-11:05 am

2 stops25h 55m

Bangkok Don Mueang Intl

Sun 11/23

12:05 pm-3:50 pm

2 stops39h 45m

$1,075

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Sun 2/8

9:10 pm-8:15 am

2 stops47h 05m

Bangkok Don Mueang Intl

Sat 2/28

8:15 pm-3:50 pm

2 stops55h 35m

$1,077

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Sat 2/7

9:10 pm-3:35 pm

2 stops30h 25m

Bangkok Don Mueang Intl

Sun 3/1

8:15 pm-3:50 pm

2 stops55h 35m

$1,078

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Mon 10/13

10:05 pm-11:05 am

2 stops26h 00m

Bangkok Don Mueang Intl

Thu 10/23

2:00 pm-4:10 pm

2 stops37h 10m

$1,079

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Mon 11/3

9:10 pm-11:05 am

2 stops25h 55m

Bangkok Don Mueang Intl

Mon 11/17

12:05 pm-3:50 pm

2 stops39h 45m

$1,081

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Sun 1/18

9:10 pm-7:15 pm

2 stops34h 05m

Bangkok Don Mueang Intl

Wed 2/4

12:05 pm-3:50 pm

2 stops39h 45m

$1,082

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Mon 10/13

10:05 pm-11:05 am

2 stops26h 00m

Bangkok Don Mueang Intl

Tue 10/28

8:15 pm-4:50 pm

2 stops55h 35m

$1,095

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Tue 2/10

9:10 pm-3:35 pm

2 stops30h 25m

Bangkok Don Mueang Intl

Tue 2/24

9:15 am-3:50 pm

2 stops42h 35m

$1,098

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Sat 10/4

10:05 pm-11:50 am

2 stops26h 45m

Bangkok Don Mueang Intl

Sat 10/18

8:15 pm-4:10 pm

2 stops54h 55m

$1,100

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Washington, D.C. to Bangkok Don Mueang Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Bangkok Don Mueang Intl Airport?

The cheapest day to depart from Washington, D.C. to Bangkok Don Mueang Intl Airport is on a Tuesday. Travelers who choose to depart for Bangkok Don Mueang Intl Airport on a Tuesday will often find tickets for as low as $1,118. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,549. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bangkok Don Mueang Intl Airport.

What is the cheapest time of day to depart on your flight to Bangkok Don Mueang Intl Airport?

Flying to Bangkok Don Mueang Intl Airport from Washington, D.C. in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,412 when looking at flights departing in the morning. Flights at noon are often more expensive with an average ticket price of $1,577.

When to book flights from Washington, D.C. to Bangkok Don Mueang Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Bangkok Don Mueang Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Bangkok Don Mueang Intl Airport (WAS to DMK) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Bangkok Don Mueang Intl Airport

Direct flights

None
There are no direct flights from Washington, D.C. to Bangkok Don Mueang Intl Airport. There are no popular flight routes from Washington, D.C. to Bangkok Don Mueang Intl Airport.
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  • How far is Washington, D.C. to Bangkok Don Mueang Intl by plane?

    There are 8778.0 mi between Washington, D.C. and Bangkok Don Mueang Intl. A reasonable flight in good conditions will take 25h 55m.

  • When did momondo last update prices for flights from Washington, D.C. to Bangkok Don Mueang Intl Airport?

    Prices for flights from Washington, D.C. to Bangkok Don Mueang Intl Airport refresh daily.

  • How old do you have to be to fly from Washington, D.C. to Bangkok Don Mueang Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Bangkok Don Mueang Intl Airport.

  • What documentation or ID do you need to fly to Bangkok Don Mueang Intl Airport?

    The travel and health documents you'll need for your trip to Bangkok Don Mueang Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bangkok Don Mueang Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Bangkok?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Bangkok. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to Bangkok with flexible booking policies on momondo?

Yes. All flights to Bangkok from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington, D.C. to Bangkok?

Once you have performed a search for Washington, D.C. to Bangkok flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Bangkok right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Bangkok, momondo offers a useful price alert feature which will track prices for flights to Bangkok from Washington, D.C. and alert you when they change.

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