Cheap flights from Washington, D.C. to Bangkok from $426

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 4/28. 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

Enter your travel dates to find the best prices.
Etihad Airways Logo
3:35 pm - 11:25 pm
IAD
-
BKK
20h 50m
1 stop
Etihad Airways Logo
8:55 am - 10:05 am
BKK
-
IAD
36h 10m
1 stop
$856Etihad Airways
Sun, Mar 8 - Thu, Mar 19
Etihad Airways Logo
2:35 pm - 11:45 am
IAD
-
BKK
33h 10m
1 stop
Etihad Airways Logo
8:05 pm - 10:05 am
BKK
-
IAD
25h 00m
1 stop
$857Etihad Airways
Mon, Feb 16 - Wed, Mar 11
Turkish Airlines Logo
2:30 pm - 3:05 pm
IAD
-
BKK
37h 35m
1 stop
Turkish Airlines Logo
5:50 am - 8:20 pm
BKK
-
IAD
25h 30m
1 stop
$859Turkish Airlines
Sat, Mar 14 - Fri, Mar 20
Etihad Airways Logo
3:10 pm - 11:50 pm
IAD
-
BKK
21h 40m
1 stop
Etihad Airways Logo
9:45 am - 9:45 am
BKK
-
IAD
35h 00m
1 stop
$860Etihad Airways
Sat, Apr 4 - Tue, Apr 21
Turkish Airlines Logo
10:15 pm - 3:05 pm
IAD
-
BKK
29h 50m
1 stop
Turkish Airlines Logo
10:45 pm - 11:35 am
BKK
-
IAD
23h 50m
1 stop
$873Turkish Airlines
Sat, Mar 21 - Tue, Mar 31
ANA Logo
8:20 am - 11:55 pm
DCA
-
BKK
28h 35m
2 stops
ANA Logo
9:35 pm - 2:14 pm
BKK
-
DCA
27h 39m
2 stops
$922ANA
Mon, May 4 - Mon, May 11
Delta Logo
7:35 am - 12:45 am
DCA
-
BKK
29h 10m
2 stops
Delta Logo
11:15 pm - 10:42 pm
BKK
-
DCA
34h 27m
2 stops
$930Delta
Mon, Feb 16 - Tue, Mar 17
United Airlines Logo
11:30 am - 9:35 am
DCA
-
BKK
35h 05m
3 stops
United Airlines Logo
7:00 am - 8:43 pm
BKK
-
DCA
24h 43m
2 stops
$938United Airlines
Mon, Jul 27 - Thu, Sep 3
United Airlines Logo
7:30 am - 4:35 am
DCA
-
BKK
34h 05m
2 stops
United Airlines Logo
7:00 am - 9:31 pm
BKK
-
DCA
25h 31m
2 stops
$939United Airlines
Mon, Apr 6 - Tue, Apr 21
Delta Logo
7:05 am - 12:55 am
BWI
-
BKK
29h 50m
2 stops
Delta Logo
11:15 pm - 10:14 pm
BKK
-
BWI
33h 59m
2 stops
$940Delta
Mon, Feb 16 - Tue, Mar 17

Etihad Airways flights from Washington, D.C. to Bangkok Suvarnabhumi Airport

Our best Etihad Airways deals on Washington, D.C. to Bangkok Suvarnabhumi Airport flight tickets
Etihad Airways
Mar 8
IAD3:35 pmWashington, D.C. Dulles Intl
20h 50m
1 stop
BKK11:25 pmBangkok Suvarnabhumi
Mar 19
BKK8:55 amBangkok Suvarnabhumi
36h 10m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
$856
Etihad Airways
Feb 16
IAD2:35 pmWashington, D.C. Dulles Intl
33h 10m
1 stop
BKK11:45 amBangkok Suvarnabhumi
Mar 11
BKK8:05 pmBangkok Suvarnabhumi
25h 00m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
$857
Etihad Airways
Feb 3
IAD2:35 pmWashington, D.C. Dulles Intl
39h 25m
1 stop
BKK6:00 pmBangkok Suvarnabhumi
Feb 14
BKK2:40 pmBangkok Suvarnabhumi
30h 25m
1 stop
IAD9:05 amWashington, D.C. Dulles Intl
$859

Delta flights from Washington, D.C. to Bangkok Suvarnabhumi Airport

Our best Delta deals on Washington, D.C. to Bangkok Suvarnabhumi Airport flight tickets
Delta
Feb 9
DCA6:05 amWashington, D.C. Reagan-National
30h 50m
2 stops
BKK12:55 amBangkok Suvarnabhumi
Mar 9
BKK11:15 pmBangkok Suvarnabhumi
35h 19m
2 stops
DCA11:34 pmWashington, D.C. Reagan-National
$930
Delta
Feb 3
IAD7:00 amWashington, D.C. Dulles Intl
29h 55m
2 stops
BKK12:55 amBangkok Suvarnabhumi
Feb 19
BKK9:40 amBangkok Suvarnabhumi
35h 33m
2 stops
IAD9:13 amWashington, D.C. Dulles Intl
$937
Delta
Feb 9
BWI7:00 amBaltimore/Washington
29h 55m
2 stops
BKK12:55 amBangkok Suvarnabhumi
Mar 11
BKK2:05 amBangkok Suvarnabhumi
33h 48m
2 stops
BWI12:53 amBaltimore/Washington
$940

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Bangkok Suvarnabhumi 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 January 30, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 3/8

3:35 pm-11:25 pm

1 stop20h 50m

Bangkok Suvarnabhumi

Thu 3/19

8:55 am-10:05 am

1 stop36h 10m

$856

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 2/16

2:35 pm-11:45 am

1 stop33h 10m

Bangkok Suvarnabhumi

Wed 3/11

8:05 pm-10:05 am

1 stop25h 00m

$857

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sat 3/14

2:30 pm-3:05 pm

1 stop37h 35m

Bangkok Suvarnabhumi

Fri 3/20

5:50 am-8:20 pm

1 stop25h 30m

$859

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sat 4/4

3:10 pm-11:50 pm

1 stop21h 40m

Bangkok Suvarnabhumi

Tue 4/21

9:45 am-9:45 am

1 stop35h 00m

$860

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sat 3/21

10:15 pm-3:05 pm

1 stop29h 50m

Bangkok Suvarnabhumi

Tue 3/31

10:45 pm-11:35 am

1 stop23h 50m

$873

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 5/4

8:20 am-11:55 pm

2 stops28h 35m

Bangkok Suvarnabhumi

Mon 5/11

9:35 pm-2:14 pm

2 stops27h 39m

$922

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 2/16

7:35 am-12:45 am

2 stops29h 10m

Bangkok Suvarnabhumi

Tue 3/17

11:15 pm-10:42 pm

2 stops34h 27m

$930

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 7/27

11:30 am-9:35 am

3 stops35h 05m

Bangkok Suvarnabhumi

Thu 9/3

7:00 am-8:43 pm

2 stops24h 43m

$938

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 4/6

7:30 am-4:35 am

2 stops34h 05m

Bangkok Suvarnabhumi

Tue 4/21

7:00 am-9:31 pm

2 stops25h 31m

$939

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Mon 2/16

7:05 am-12:55 am

2 stops29h 50m

Bangkok Suvarnabhumi

Tue 3/17

11:15 pm-10:14 pm

2 stops33h 59m

$940

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Bangkok from

How to get the cheapest flight ticket from Washington, D.C. to Bangkok Suvarnabhumi 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 typical price of a round-trip flight between Washington, D.C. and Bangkok Suvarnabhumi Airport?

What is the cheapest month to fly to Bangkok Suvarnabhumi Airport?

The month of September is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from Washington, D.C., with most prices found around $960. The month of October is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from Washington, D.C. averaging around $1,025.

How far in advance should I book a flight to Bangkok Suvarnabhumi Airport?

You are more likely to see cheaper flights to Bangkok Suvarnabhumi Airport from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok Suvarnabhumi Airport for around $1,128 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok Suvarnabhumi Airport from Washington, D.C. for as low as $1,041 on momondo.

Can stopping save me money on Washington, D.C. to Bangkok Suvarnabhumi Airport flights?

You could potentially save up to 18% on your flight if you consider stops on a Washington, D.C. to Bangkok Suvarnabhumi Airport flight.

How have Washington, D.C. to Bangkok Suvarnabhumi Airport flight prices changed over time?

As of January 2026, prices for Washington, D.C. to Bangkok Suvarnabhumi Airport flights are approximately 13% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Bangkok Suvarnabhumi Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Bangkok Suvarnabhumi 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 Suvarnabhumi Airport (WAS to BKK) flight deals and tips

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

Fastest flight time

20h 50m

Direct flights

None
The fastest flight from Washington, D.C. to Bangkok Suvarnabhumi Airport takes 20h 50m
There are no direct flights from Washington, D.C. to Bangkok Suvarnabhumi Airport. There are no popular flight routes from Washington, D.C. to Bangkok Suvarnabhumi Airport.
  • How far is Washington, D.C. to Bangkok Suvarnabhumi by plane?

    Bangkok Suvarnabhumi is 8793.6 mi away from Washington, D.C.. A reasonable flight in good conditions will take 20h 50m.

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

    Prices for flights from Washington, D.C. to Bangkok Suvarnabhumi Airport refresh daily.

  • How many operators does momondo search for flights from Washington, D.C. to Bangkok Suvarnabhumi Airport?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Bangkok Suvarnabhumi Airport.

  • What documentation or ID do you need to fly to Bangkok Suvarnabhumi Airport?

    The travel and health documents you'll need for your trip to Bangkok Suvarnabhumi 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 Suvarnabhumi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Washington, D.C. to Bangkok Suvarnabhumi Airport?

Best airlines flying from Washington, D.C. to Bangkok Suvarnabhumi Airport

Compare and see reviews for airlines that fly from Washington, D.C. to Bangkok Suvarnabhumi Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $216Free CancellationRating
7.4
9,216 reviews
Search United Airlines flights
Air ChinaPriceFrom $565Free CancellationRating
7.2
138 reviews
Search Air China flights
Air CanadaPriceFrom $597Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights
IndiGoPriceFrom $639Free CancellationRating
6.8
528 reviews
Search IndiGo flights
Air IndiaPriceFrom $714Free CancellationRating
5.5
2,978 reviews
Search Air India flights
Etihad AirwaysPriceFrom $787Free CancellationRating
7.3
1,375 reviews
Search Etihad Airways flights
Korean AirPriceFrom $802Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
Qatar AirwaysPriceFrom $818Free CancellationRating
7.4
3,725 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $849Free CancellationRating
7.3
4,207 reviews
Search Turkish Airlines flights
ANAPriceFrom $896Free CancellationRating
8.4
1,078 reviews
Search ANA flights

Traveling to a place near Bangkok?

Book flights to Bangkok if you plan to visit one of these locations
Pattaya
Ko Samet
Kanchanaburi
Cha-am
Ko Lan
Ayutthaya
Chonburi
Pak Chong
Sattahip
Phetchaburi

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Bangkok from Washington, D.C..

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

momondo does allow users to show only those flights to Bangkok from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Washington, D.C. and Bangkok by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Washington, D.C. to Bangkok flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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