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Cheap flights from Washington, D.C. to Bangkok from $454

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 4/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:35 pm - 4:25 am
IAD
-
DMK
25h 50m2 stops
Multiple Airlines Logo
1:40 pm - 9:05 am
DMK
-
IAD
31h 25m2 stops
$1,012Multiple Airlines
mié., feb. 4 - lun., feb. 9
Multiple Airlines Logo
2:35 pm - 4:25 am
IAD
-
DMK
25h 50m2 stops
Multiple Airlines Logo
1:40 pm - 9:05 am
DMK
-
IAD
31h 25m2 stops
$1,013Multiple Airlines
mié., feb. 4 - mié., feb. 11
Multiple Airlines Logo
2:35 pm - 4:25 am
IAD
-
DMK
25h 50m2 stops
Multiple Airlines Logo
1:40 pm - 9:05 am
DMK
-
IAD
31h 25m2 stops
$1,029Multiple Airlines
mié., feb. 4 - mié., feb. 11
Multiple Airlines Logo
2:35 pm - 2:30 am
IAD
-
DMK
23h 55m2 stops
Multiple Airlines Logo
1:40 pm - 9:05 am
DMK
-
IAD
31h 25m2 stops
$1,036Multiple Airlines
sáb., ene. 24 - dom., feb. 8
Multiple Airlines Logo
2:35 pm - 2:30 am
IAD
-
DMK
23h 55m2 stops
Multiple Airlines Logo
1:40 pm - 9:05 am
DMK
-
IAD
31h 25m2 stops
$1,038Multiple Airlines
mié., ene. 21 - dom., feb. 1
Multiple Airlines Logo
3:35 pm - 2:30 am
IAD
-
DMK
23h 55m2 stops
Multiple Airlines Logo
1:40 pm - 10:05 am
DMK
-
IAD
31h 25m2 stops
$1,045Multiple Airlines
mar., mar. 10 - mié., mar. 25
Multiple Airlines Logo
2:35 pm - 2:30 am
IAD
-
DMK
23h 55m2 stops
Multiple Airlines Logo
1:40 pm - 9:05 am
DMK
-
IAD
31h 25m2 stops
$1,071Multiple Airlines
jue., ene. 22 - mié., feb. 4
Multiple Airlines Logo
2:35 pm - 5:05 pm
IAD
-
DMK
38h 30m2 stops
Multiple Airlines Logo
12:05 pm - 10:05 am
DMK
-
IAD
33h 00m2 stops
$1,074Multiple Airlines
mié., feb. 4 - mié., mar. 18
Multiple Airlines Logo
2:35 pm - 4:20 am
IAD
-
DMK
25h 45m2 stops
Multiple Airlines Logo
11:45 pm - 3:55 pm
DMK
-
IAD
28h 10m2 stops
$1,076Multiple Airlines
lun., feb. 2 - lun., feb. 16
Multiple Airlines Logo
2:35 pm - 4:20 am
IAD
-
DMK
25h 45m2 stops
Multiple Airlines Logo
7:55 pm - 7:20 pm
DMK
-
IAD
35h 25m3 stops
$1,080Multiple Airlines
lun., feb. 2 - jue., feb. 5

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 enero 8, 2026.
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

mié. 2/4

2:35 pm-4:25 am

2 stops25h 50m

Bangkok Don Mueang Intl

lun. 2/9

1:40 pm-9:05 am

2 stops31h 25m

$1,012

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

mié. 2/4

2:35 pm-4:25 am

2 stops25h 50m

Bangkok Don Mueang Intl

mié. 2/11

1:40 pm-9:05 am

2 stops31h 25m

$1,013

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

mié. 2/4

2:35 pm-4:25 am

2 stops25h 50m

Bangkok Don Mueang Intl

mié. 2/11

1:40 pm-9:05 am

2 stops31h 25m

$1,029

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

sáb. 1/24

2:35 pm-2:30 am

2 stops23h 55m

Bangkok Don Mueang Intl

dom. 2/8

1:40 pm-9:05 am

2 stops31h 25m

$1,036

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

mié. 1/21

2:35 pm-2:30 am

2 stops23h 55m

Bangkok Don Mueang Intl

dom. 2/1

1:40 pm-9:05 am

2 stops31h 25m

$1,038

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

mar. 3/10

3:35 pm-2:30 am

2 stops23h 55m

Bangkok Don Mueang Intl

mié. 3/25

1:40 pm-10:05 am

2 stops31h 25m

$1,045

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

jue. 1/22

2:35 pm-2:30 am

2 stops23h 55m

Bangkok Don Mueang Intl

mié. 2/4

1:40 pm-9:05 am

2 stops31h 25m

$1,071

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

mié. 2/4

2:35 pm-5:05 pm

2 stops38h 30m

Bangkok Don Mueang Intl

mié. 3/18

12:05 pm-10:05 am

2 stops33h 00m

$1,074

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

lun. 2/2

2:35 pm-4:20 am

2 stops25h 45m

Bangkok Don Mueang Intl

lun. 2/16

11:45 pm-3:55 pm

2 stops28h 10m

$1,076

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

lun. 2/2

2:35 pm-4:20 am

2 stops25h 45m

Bangkok Don Mueang Intl

jue. 2/5

7:55 pm-7:20 pm

3 stops35h 25m

$1,080

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bangkok from

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

How long does it take to fly to Bangkok Don Mueang Intl Airport?

Flight times vary depending on what airport in Washington, D.C. you fly out of and what airport in Bangkok Don Mueang Intl Airport you fly into. For example, flying from Washington, D.C. to Bangkok Suvarnabhumi Airport takes 22h 59m on average. On the other hand, flying from Baltimore to Bangkok Suvarnabhumi Airport takes 27h 59m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

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

Fastest flight time

23h 55m

Direct flights

None
The fastest flight from Washington, D.C. to Bangkok Don Mueang Intl Airport takes 23h 55m
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 23h 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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