Cheap flights from Washington, D.C. to Bangkok from $344

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 1/18. 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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Cheap round-trip flights

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Multiple Airlines Logo
7:40 pm - 8:10 amBWI-BKK
24h 30m2 stops
Multiple Airlines Logo
12:15 pm - 6:40 pmBKK-BWI
42h 25m2 stops
$766Multiple Airlines
Find Deal
Sa, Nov 29 - Di, Dez 16
Etihad Airways Logo
9:10 pm - 11:20 pmIAD-BKK
38h 10m1 stop
Etihad Airways Logo
12:25 pm - 9:45 amBKK-IAD
56h 20m2 stops
$840Etihad Airways
Find Deal
So, Nov 30 - So, Mrz 29
Qatar Airways Logo
10:40 am - 7:25 pmIAD-BKK
20h 45m1 stop
Qatar Airways Logo
3:00 am - 3:55 pmBKK-IAD
24h 55m1 stop
$843Qatar Airways
Find Deal
Mi, Nov 19 - Di, Jan 27
Qatar Airways Logo
9:00 pm - 7:20 amIAD-BKK
23h 20m1 stop
Qatar Airways Logo
8:00 pm - 3:40 pmBKK-IAD
30h 40m1 stop
$844Qatar Airways
Find Deal
Mi, Apr 8 - Do, Apr 30
Turkish Airlines Logo
1:30 pm - 3:05 pmIAD-BKK
37h 35m1 stop
Turkish Airlines Logo
10:10 am - 7:20 pmBKK-IAD
45h 10m1 stop
$848Turkish Airlines
Find Deal
So, Nov 9 - Mo, Nov 24
Turkish Airlines Logo
2:30 pm - 3:05 pmIAD-BKK
37h 35m1 stop
Turkish Airlines Logo
11:15 am - 11:35 amBKK-IAD
35h 20m1 stop
$888Turkish Airlines
Find Deal
Fr, Mrz 13 - Mi, Apr 1
Korean Air Logo
7:00 am - 12:55 amDCA-BKK
29h 55m2 stops
Korean Air Logo
9:30 pm - 12:51 pmBKK-DCA
27h 21m2 stops
$933Korean Air
Find Deal
Do, Nov 27 - Mo, Dez 8
United Airlines Logo
12:00 pm - 11:25 amDCA-BKK
35h 25m3 stops
United Airlines Logo
4:55 pm - 8:29 amBKK-DCA
27h 34m3 stops
$948United Airlines
Find Deal
Do, Nov 27 - Do, Dez 4
United Airlines Logo
7:00 am - 11:25 amDCA-BKK
40h 25m2 stops
United Airlines Logo
4:55 pm - 3:55 pmBKK-DCA
35h 00m3 stops
$952United Airlines
Find Deal
Mi, Nov 26 - Mi, Feb 11
Korean Air Logo
6:59 am - 12:55 amDCA-BKK
29h 56m2 stops
Korean Air Logo
12:55 am - 12:42 pmBKK-DCA
23h 47m2 stops
$958Korean Air
Find Deal
Di, Nov 25 - Mo, Dez 8

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
Jan 14
BWI7:14 pmBaltimore/Washington
36h 46m
2 stops
BKK8:00 pmBangkok Suvarnabhumi
Feb 25
BKK9:10 pmBangkok Suvarnabhumi
32h 45m
2 stops
BWI5:55 pmBaltimore/Washington
Singapore Airlines
Jan 12
DCA5:01 pmWashington, D.C. Reagan-National
38h 59m
2 stops
BKK8:00 pmBangkok Suvarnabhumi
Jan 27
BKK12:00 pmBangkok Suvarnabhumi
44h 00m
2 stops
DCA8:00 pmWashington, D.C. Reagan-National
Singapore Airlines
Feb 2
BWI7:14 pmBaltimore/Washington
36h 46m
2 stops
BKK8:00 pmBangkok Suvarnabhumi
Feb 16
BKK9:10 pmBangkok Suvarnabhumi
32h 45m
2 stops
BWI5:55 pmBaltimore/Washington

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

Our best ANA deals on Washington, D.C. to Bangkok Suvarnabhumi Airport flight tickets
ANA
Nov 4
IAD12:20 pmWashington, D.C. Dulles Intl
40h 00m
1 stop
BKK4:20 pmBangkok Suvarnabhumi
Dec 10
BKK2:20 pmBangkok Suvarnabhumi
30h 50m
1 stop
IAD9:10 amWashington, D.C. Dulles Intl
ANA
Nov 4
IAD12:20 pmWashington, D.C. Dulles Intl
40h 00m
1 stop
BKK4:20 pmBangkok Suvarnabhumi
Nov 27
BKK7:10 amBangkok Suvarnabhumi
23h 17m
2 stops
IAD6:27 pmWashington, D.C. Dulles Intl
ANA
Nov 4
IAD12:20 pmWashington, D.C. Dulles Intl
40h 00m
1 stop
BKK4:20 pmBangkok Suvarnabhumi
Dec 10
BKK7:10 amBangkok Suvarnabhumi
26h 08m
2 stops
IAD9:18 pmWashington, D.C. Dulles Intl

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 Oktober 25, 2025.
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

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Sa 11/29

7:40 pm-8:10 am

2 stops24h 30m

Bangkok Suvarnabhumi

Di 12/16

12:15 pm-6:40 pm

2 stops42h 25m

$766

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

So 11/30

9:10 pm-11:20 pm

1 stop38h 10m

Bangkok Suvarnabhumi

So 3/29

12:25 pm-9:45 am

2 stops56h 20m

$840

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mi 11/19

10:40 am-7:25 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Di 1/27

3:00 am-3:55 pm

1 stop24h 55m

$843

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mi 4/8

9:00 pm-7:20 am

1 stop23h 20m

Bangkok Suvarnabhumi

Do 4/30

8:00 pm-3:40 pm

1 stop30h 40m

$844

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

So 11/9

1:30 pm-3:05 pm

1 stop37h 35m

Bangkok Suvarnabhumi

Mo 11/24

10:10 am-7:20 pm

1 stop45h 10m

$848

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Fr 3/13

2:30 pm-3:05 pm

1 stop37h 35m

Bangkok Suvarnabhumi

Mi 4/1

11:15 am-11:35 am

1 stop35h 20m

$888

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Do 11/27

7:00 am-12:55 am

2 stops29h 55m

Bangkok Suvarnabhumi

Mo 12/8

9:30 pm-12:51 pm

2 stops27h 21m

$933

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Do 11/27

12:00 pm-11:25 am

3 stops35h 25m

Bangkok Suvarnabhumi

Do 12/4

4:55 pm-8:29 am

3 stops27h 34m

$948

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mi 11/26

7:00 am-11:25 am

2 stops40h 25m

Bangkok Suvarnabhumi

Mi 2/11

4:55 pm-3:55 pm

3 stops35h 00m

$952

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Di 11/25

6:59 am-12:55 am

2 stops29h 56m

Bangkok Suvarnabhumi

Mo 12/8

12:55 am-12:42 pm

2 stops23h 47m

$958

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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 $965. The month of October is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from Washington, D.C. averaging around $1,038.

What is the cheapest day to depart on your flight to Bangkok Suvarnabhumi Airport?

The cheapest day to depart on your flight to Bangkok Suvarnabhumi Airport is on a Saturday when prices can be found for as low as $1,210. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from Washington, D.C. because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,354.

What is the cheapest time of day to depart on your flight to Bangkok Suvarnabhumi Airport?

Our most recent data shows that the best time of day to fly to Bangkok Suvarnabhumi Airport is in the evening. Flights from Washington, D.C. to Bangkok Suvarnabhumi Airport during this time can be as low as $1,143. In the morning is when there is more demand to fly to Bangkok Suvarnabhumi Airport, so prices are often more expensive at around $1,365 per ticket.

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 $1,206 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 $1,015 on momondo.

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

You could potentially save up to 12% 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 October 2025, prices for Washington, D.C. to Bangkok Suvarnabhumi Airport flights are approximately 21% 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

Direct flights

None
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 45m.

  • 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
7.2
117 reviews
Search Air China flights
Air IndiaPriceFrom $700Free CancellationRating
5.5
2,941 reviews
Search Air India flights
Korean AirPriceFrom $802Free CancellationRating
8.4
1,153 reviews
Search Korean Air flights
SAUDIAPriceFrom $834Free CancellationRating
7.4
635 reviews
Search SAUDIA flights
Etihad AirwaysPriceFrom $840Free CancellationRating
7.4
1,282 reviews
Search Etihad Airways flights
Qatar AirwaysPriceFrom $854Free CancellationRating
7.4
3,657 reviews
Search Qatar Airways flights
ANAPriceFrom $895Free CancellationRating
8.4
994 reviews
Search ANA flights
JetBluePriceFrom $900Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
Turkish AirlinesPriceFrom $902Free CancellationRating
7.3
4,028 reviews
Search Turkish Airlines flights
Alaska AirlinesPriceFrom $920Free CancellationRating
8.0
11,187 reviews
Search Alaska 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
Chonburi
Ayutthaya
Cha-am
Ko Lan
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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