Cheap flights from Washington, D.C. to Bangkok from $436

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 4/16. 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
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Etihad Airways Logo
3:10 pm - 11:50 pm
IAD
-
BKK
21h 40m
1 stop
Etihad Airways Logo
9:00 pm - 9:45 am
BKK
-
IAD
23h 45m
1 stop
$835Etihad Airways
Sun, May 10 - Mon, Jun 1
AIR PREMIA Logo
1:20 pm - 9:10 pm
IAD
-
BKK
44h 50m
1 stop
AIR PREMIA Logo
10:45 pm - 10:50 am
BKK
-
IAD
23h 05m
1 stop
$837AIR PREMIA
Sun, Aug 9 - Tue, Aug 25
Etihad Airways Logo
2:05 pm - 6:45 am
IAD
-
BKK
29h 40m
1 stop
Etihad Airways Logo
9:00 pm - 9:45 am
BKK
-
IAD
23h 45m
1 stop
$840Etihad Airways
Sun, Apr 19 - Sun, May 10
Etihad Airways Logo
2:05 pm - 6:45 am
IAD
-
BKK
29h 40m
1 stop
Etihad Airways Logo
3:55 pm - 9:45 am
BKK
-
IAD
28h 50m
1 stop
$851Etihad Airways
Sun, Apr 26 - Sun, May 24
Etihad Airways Logo
3:10 pm - 6:10 pm
IAD
-
BKK
40h 00m
1 stop
Etihad Airways Logo
8:30 am - 9:05 am
BKK
-
IAD
36h 35m
1 stop
$855Etihad Airways
Mon, Aug 24 - Thu, Nov 26
Singapore Airlines Logo
9:30 am - 12:20 pm
DCA
-
BKK
39h 50m
2 stops
Singapore Airlines Logo
3:30 pm - 8:00 pm
BKK
-
DCA
39h 30m
2 stops
$941Singapore Airlines
Tue, Sep 1 - Mon, Sep 14
Multiple Airlines Logo
9:30 am - 11:00 am
DCA
-
BKK
38h 30m
2 stops
Multiple Airlines Logo
3:30 pm - 8:00 pm
BKK
-
DCA
39h 30m
2 stops
$956Multiple Airlines
Tue, Sep 1 - Mon, Sep 14
Singapore Airlines Logo
9:30 am - 12:20 pm
DCA
-
BKK
39h 50m
2 stops
Singapore Airlines Logo
3:30 pm - 8:00 pm
BKK
-
DCA
39h 30m
2 stops
$969Singapore Airlines
Tue, Sep 1 - Mon, Sep 14
British Airways Logo
6:00 am - 7:05 am
DCA
-
BKK
38h 05m
2 stops
British Airways Logo
2:05 am - 10:00 pm
BKK
-
DCA
30h 55m
2 stops
$1,034British Airways
Thu, May 14 - Wed, May 20
EVA Air Logo
6:16 pm - 11:20 am
BWI
-
BKK
30h 04m
2 stops
EVA Air Logo
3:10 pm - 6:30 am
BKK
-
BWI
26h 20m
2 stops
$1,086EVA Air
Wed, Sep 9 - Wed, Sep 23

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

Our best Qatar Airways deals on Washington, D.C. to Bangkok Suvarnabhumi Airport flight tickets
Qatar Airways
Apr 9
IAD9:00 pmWashington, D.C. Dulles Intl
28h 20m
1 stop
BKK12:20 pmBangkok Suvarnabhumi
Apr 22
BKK2:05 amBangkok Suvarnabhumi
25h 00m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$991
Qatar Airways
Apr 9
IAD9:00 pmWashington, D.C. Dulles Intl
22h 20m
1 stop
BKK6:20 amBangkok Suvarnabhumi
Apr 16
BKK1:45 amBangkok Suvarnabhumi
25h 20m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$1,004
Qatar Airways
Apr 9
IAD9:00 pmWashington, D.C. Dulles Intl
28h 20m
1 stop
BKK12:20 pmBangkok Suvarnabhumi
Apr 16
BKK2:30 amBangkok Suvarnabhumi
26h 40m
1 stop
IAD6:10 pmWashington, D.C. Dulles Intl
$1,006

Singapore Airlines flights from Washington, D.C. to Bangkok Suvarnabhumi Airport

Our best Singapore Airlines deals on Washington, D.C. to Bangkok Suvarnabhumi Airport flight tickets
Singapore Airlines
Sep 1
DCA9:30 amWashington, D.C. Reagan-National
39h 50m
2 stops
BKK12:20 pmBangkok Suvarnabhumi
Sep 14
BKK3:30 pmBangkok Suvarnabhumi
39h 30m
2 stops
DCA8:00 pmWashington, D.C. Reagan-National
$941
Singapore Airlines
Sep 1
DCA9:30 amWashington, D.C. Reagan-National
39h 50m
2 stops
BKK12:20 pmBangkok Suvarnabhumi
Sep 14
BKK3:30 pmBangkok Suvarnabhumi
39h 30m
2 stops
DCA8:00 pmWashington, D.C. Reagan-National
$969
Singapore Airlines
Sep 2
DCA9:30 amWashington, D.C. Reagan-National
35h 35m
2 stops
BKK8:05 amBangkok Suvarnabhumi
Oct 14
BKK8:15 pmBangkok Suvarnabhumi
36h 44m
2 stops
DCA9:59 pmWashington, D.C. Reagan-National
$1,013

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 April 3, 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

Cheapest round-trip
Quickest round-trip

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 5/10

3:10 pm-11:50 pm

1 stop21h 40m

Bangkok Suvarnabhumi

Mon 6/1

9:00 pm-9:45 am

1 stop23h 45m

$835

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 8/9

1:20 pm-9:10 pm

1 stop44h 50m

Bangkok Suvarnabhumi

Tue 8/25

10:45 pm-10:50 am

1 stop23h 05m

$837

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 4/19

2:05 pm-6:45 am

1 stop29h 40m

Bangkok Suvarnabhumi

Sun 5/10

9:00 pm-9:45 am

1 stop23h 45m

$840

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 4/26

2:05 pm-6:45 am

1 stop29h 40m

Bangkok Suvarnabhumi

Sun 5/24

3:55 pm-9:45 am

1 stop28h 50m

$851

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 8/24

3:10 pm-6:10 pm

1 stop40h 00m

Bangkok Suvarnabhumi

Thu 11/26

8:30 am-9:05 am

1 stop36h 35m

$855

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 9/1

9:30 am-12:20 pm

2 stops39h 50m

Bangkok Suvarnabhumi

Mon 9/14

3:30 pm-8:00 pm

2 stops39h 30m

$941

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 9/1

9:30 am-11:00 am

2 stops38h 30m

Bangkok Suvarnabhumi

Mon 9/14

3:30 pm-8:00 pm

2 stops39h 30m

$956

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 9/1

9:30 am-12:20 pm

2 stops39h 50m

Bangkok Suvarnabhumi

Mon 9/14

3:30 pm-8:00 pm

2 stops39h 30m

$969

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Thu 5/14

6:00 am-7:05 am

2 stops38h 05m

Bangkok Suvarnabhumi

Wed 5/20

2:05 am-10:00 pm

2 stops30h 55m

$1,034

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Wed 9/9

6:16 pm-11:20 am

2 stops30h 04m

Bangkok Suvarnabhumi

Wed 9/23

3:10 pm-6:30 am

2 stops26h 20m

$1,086

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 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 $944. The month of April is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from Washington, D.C. averaging around $967.

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 $1,086 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 $969 on momondo.

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

You could potentially save up to 1% 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 April 2026, prices for Washington, D.C. to Bangkok Suvarnabhumi Airport flights are approximately 1% 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

21h 40m

Direct flights

None
The fastest flight from Washington, D.C. to Bangkok Suvarnabhumi Airport takes 21h 40m
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.

Frequently asked questions about flying 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 21h 40m.

  • 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
Air ChinaPriceFrom $565Free CancellationRating
7.3
146 reviews
Search Air China flights
AIR PREMIAPriceFrom $784Free CancellationRating
8.2
85 reviews
Search AIR PREMIA flights
Etihad AirwaysPriceFrom $785Free CancellationRating
7.3
1,429 reviews
Search Etihad Airways flights
Korean AirPriceFrom $802Free CancellationRating
8.4
1,203 reviews
Search Korean Air flights
Qatar AirwaysPriceFrom $818Free CancellationRating
7.4
3,730 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $835Free CancellationRating
7.3
4,295 reviews
Search Turkish Airlines flights
ANAPriceFrom $893Free CancellationRating
8.4
1,163 reviews
Search ANA flights
JetBluePriceFrom $900Free CancellationRating
7.2
2,913 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $920Free CancellationRating
7.9
12,160 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $933Free CancellationRating
7.4
9,542 reviews
Search United Airlines 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
Chonburi
Ko Lan
Ayutthaya
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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