Cheap flights from Washington, D.C. to Bangkok from $479

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 8/19. 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
3:10 pm - 11:50 pm
IAD
-
BKK
21h 40m
1 stop
Etihad Airways Logo
3:15 am - 9:45 am
BKK
-
IAD
41h 30m
1 stop
$882Etihad Airways
Thu, Sep 24 - Tue, Sep 29
Etihad Airways Logo
3:10 pm - 11:50 pm
IAD
-
BKK
21h 40m
1 stop
Etihad Airways Logo
3:15 am - 9:45 am
BKK
-
IAD
41h 30m
1 stop
$883Etihad Airways
Wed, Sep 9 - Sun, Sep 20
Etihad Airways Logo
3:10 pm - 11:50 pm
IAD
-
BKK
21h 40m
1 stop
Etihad Airways Logo
3:15 am - 9:45 am
BKK
-
IAD
41h 30m
1 stop
$884Etihad Airways
Sun, Sep 6 - Tue, Sep 22
Multiple Airlines Logo
7:25 pm - 6:50 am
BWI
-
BKK
48h 25m
2 stops
Multiple Airlines Logo
7:10 pm - 7:40 pm
BKK
-
BWI
59h 30m
2 stops
$1,085Multiple Airlines
Sat, Sep 5 - Sat, Sep 19
Air Canada Logo
9:40 am - 5:05 am
DCA
-
BKK
32h 25m
2 stops
Air Canada Logo
8:15 am - 10:21 am
BKK
-
DCA
38h 06m
2 stops
$1,103Air Canada
Mon, Aug 10 - Thu, Dec 10
Air Canada Logo
9:40 am - 5:05 am
DCA
-
BKK
32h 25m
2 stops
Air Canada Logo
7:05 am - 10:20 am
BKK
-
DCA
38h 15m
2 stops
$1,104Air Canada
Mon, Sep 14 - Mon, Sep 28
Multiple Airlines Logo
9:30 pm - 5:45 pm
BWI
-
BKK
33h 15m
2 stops
Multiple Airlines Logo
8:05 pm - 6:45 pm
BKK
-
BWI
58h 40m
2 stops
$1,109Multiple Airlines
Tue, Oct 13 - Wed, Nov 4
Gulf Air Logo
3:36 pm - 9:45 am
DCA
-
BKK
55h 09m
2 stops
Gulf Air Logo
8:15 pm - 11:02 pm
BKK
-
DCA
37h 47m
2 stops
$1,119Gulf Air
Tue, Sep 15 - Tue, Sep 22
Singapore Airlines Logo
6:12 pm - 8:00 pm
BWI
-
BKK
38h 48m
2 stops
Singapore Airlines Logo
8:00 pm - 5:40 am
BKK
-
BWI
45h 40m
2 stops
$1,123Singapore Airlines
Wed, Oct 21 - Wed, Nov 11
Singapore Airlines Logo
6:11 pm - 8:00 pm
BWI
-
BKK
37h 49m
2 stops
Singapore Airlines Logo
1:35 pm - 5:36 pm
BKK
-
BWI
40h 01m
2 stops
$1,162Singapore Airlines
Sat, Nov 7 - Fri, Nov 13

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
Sep 24
IAD3:10 pmWashington, D.C. Dulles Intl
21h 40m
1 stop
BKK11:50 pmBangkok Suvarnabhumi
Sep 29
BKK3:15 amBangkok Suvarnabhumi
41h 30m
1 stop
IAD9:45 amWashington, D.C. Dulles Intl
$882
Etihad Airways
Sep 9
IAD3:10 pmWashington, D.C. Dulles Intl
21h 40m
1 stop
BKK11:50 pmBangkok Suvarnabhumi
Sep 20
BKK3:15 amBangkok Suvarnabhumi
41h 30m
1 stop
IAD9:45 amWashington, D.C. Dulles Intl
$883
Etihad Airways
Sep 6
IAD3:10 pmWashington, D.C. Dulles Intl
21h 40m
1 stop
BKK11:50 pmBangkok Suvarnabhumi
Sep 22
BKK3:15 amBangkok Suvarnabhumi
41h 30m
1 stop
IAD9:45 amWashington, D.C. Dulles Intl
$884

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

Our best Asiana Airlines deals on Washington, D.C. to Bangkok Suvarnabhumi Airport flight tickets
Asiana Airlines
Sep 14
DCA11:00 amWashington, D.C. Reagan-National
25h 35m
2 stops
BKK11:35 pmBangkok Suvarnabhumi
Sep 21
BKK7:05 amBangkok Suvarnabhumi
23h 55m
2 stops
DCA8:00 pmWashington, D.C. Reagan-National
$1,179
Asiana Airlines
Sep 15
DCA9:40 amWashington, D.C. Reagan-National
25h 05m
2 stops
BKK9:45 pmBangkok Suvarnabhumi
Sep 24
BKK9:50 amBangkok Suvarnabhumi
23h 44m
2 stops
DCA10:34 pmWashington, D.C. Reagan-National
$1,181
Asiana Airlines
May 16
BWI6:20 amBaltimore/Washington
65h 20m
2 stops
BKK10:40 amBangkok Suvarnabhumi
Jun 13
BKK11:45 amBangkok Suvarnabhumi
30h 29m
2 stops
BWI7:14 amBaltimore/Washington
$1,731

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 May 14, 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

Thu 9/24

3:10 pm-11:50 pm

1 stop21h 40m

Bangkok Suvarnabhumi

Tue 9/29

3:15 am-9:45 am

1 stop41h 30m

$882

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 9/9

3:10 pm-11:50 pm

1 stop21h 40m

Bangkok Suvarnabhumi

Sun 9/20

3:15 am-9:45 am

1 stop41h 30m

$883

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 9/6

3:10 pm-11:50 pm

1 stop21h 40m

Bangkok Suvarnabhumi

Tue 9/22

3:15 am-9:45 am

1 stop41h 30m

$884

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Sat 9/5

7:25 pm-6:50 am

2 stops48h 25m

Bangkok Suvarnabhumi

Sat 9/19

7:10 pm-7:40 pm

2 stops59h 30m

$1,085

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 8/10

9:40 am-5:05 am

2 stops32h 25m

Bangkok Suvarnabhumi

Thu 12/10

8:15 am-10:21 am

2 stops38h 06m

$1,103

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 9/14

9:40 am-5:05 am

2 stops32h 25m

Bangkok Suvarnabhumi

Mon 9/28

7:05 am-10:20 am

2 stops38h 15m

$1,104

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Tue 10/13

9:30 pm-5:45 pm

2 stops33h 15m

Bangkok Suvarnabhumi

Wed 11/4

8:05 pm-6:45 pm

2 stops58h 40m

$1,109

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 9/15

3:36 pm-9:45 am

2 stops55h 09m

Bangkok Suvarnabhumi

Tue 9/22

8:15 pm-11:02 pm

2 stops37h 47m

$1,119

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Wed 10/21

6:12 pm-8:00 pm

2 stops38h 48m

Bangkok Suvarnabhumi

Wed 11/11

8:00 pm-5:40 am

2 stops45h 40m

$1,123

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Sat 11/7

6:11 pm-8:00 pm

2 stops37h 49m

Bangkok Suvarnabhumi

Fri 11/13

1:35 pm-5:36 pm

2 stops40h 01m

$1,162

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 August is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from Washington, D.C., with most prices found around $427. The month of September is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from Washington, D.C. averaging around $501.

How far in advance should I book a flight from Washington, D.C. 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 $1,077 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 $963 on momondo.

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

You could potentially save up to 13% 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 May 2026, prices for Washington, D.C. to Bangkok Suvarnabhumi Airport flights are approximately 24% 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 $732Free CancellationRating
7.3
149 reviews
Search Air China flights
AIR PREMIAPriceFrom $784Free CancellationRating
8.0
92 reviews
Search AIR PREMIA flights
Etihad AirwaysPriceFrom $786Free CancellationRating
7.3
1,439 reviews
Search Etihad Airways flights
Korean AirPriceFrom $802Free CancellationRating
8.4
1,217 reviews
Search Korean Air flights
Qatar AirwaysPriceFrom $816Free CancellationRating
7.4
3,726 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $833Free CancellationRating
7.4
4,366 reviews
Search Turkish Airlines flights
ANAPriceFrom $893Free CancellationRating
8.3
1,210 reviews
Search ANA flights
JetBluePriceFrom $900Free CancellationRating
7.1
2,975 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $920Free CancellationRating
7.9
12,363 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $933Free CancellationRating
7.4
9,715 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
Ayutthaya
Ko Lan
Pak Chong
Phetchaburi
Sattahip

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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