฿20,604+ Cheap flights to Washington, D.C.

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
— WAS
17 Aug — 24 Aug1
1 adult
1 adult, Economy, 0 bags

Flights to Washington, D.C. in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Washington, D.C.
Explore the most affordable flight options available to Washington, D.C.. Find the lowest fares based on data from user searches, with prices last updated on 18 July 2026.

Thu 15/1015:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 18/1018:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 18/7฿28,301
Tue 22/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 18/1018:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 16/7฿30,755
Tue 1/909:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Tue 8/915:40
IAD
-
BKK
2 stops25h 55m
United Airlines
Deal found 17/7฿34,116
Thu 27/809:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Fri 28/813:10
IAD
-
BKK
3 stops33h 25m
United Airlines
Deal found 15/7฿34,150
Tue 15/909:35
BKK
-
IAD
1 stop41h 00m
United Airlines
Tue 29/913:10
IAD
-
BKK
3 stops33h 25m
United Airlines
Deal found 15/7฿34,250
Wed 15/709:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Tue 20/1017:20
IAD
-
BKK
3 stops29h 15m
United Airlines
Deal found 14/7฿34,318
Tue 1/907:00
BKK
-
DCA
2 stops27h 59m
United Airlines
Tue 8/917:10
DCA
-
BKK
3 stops29h 25m
United Airlines
Deal found 17/7฿34,351
Sun 13/907:00
BKK
-
DCA
2 stops26h 30m
United Airlines
Tue 22/915:30
DCA
-
BKK
3 stops31h 05m
United Airlines
Deal found 17/7฿34,385
Thu 19/1107:10
BKK
-
IAD
2 stops42h 35m
United Airlines
Mon 23/1106:40
IAD
-
BKK
2 stops40h 50m
United Airlines
Deal found 15/7฿34,385
Fri 4/907:00
BKK
-
DCA
2 stops27h 59m
United Airlines
Mon 14/915:30
DCA
-
BKK
2 stops26h 05m
United Airlines
Deal found 15/7฿34,486
Wed 15/707:00
BKK
-
DCA
2 stops26h 15m
United Airlines
Thu 13/811:57
DCA
-
BKK
2 stops29h 38m
United Airlines
Deal found 14/7฿34,553
Fri 17/715:45
BKK
-
DCA
3 stops29h 14m
United Airlines
Fri 24/711:57
DCA
-
BKK
3 stops34h 38m
United Airlines
Deal found 16/7฿34,687

Find flight deals to Washington, D.C.

Find the latest flights to Washington, D.C. in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 18 July 2026.

Return from

฿30,755

One-way from

฿20,604

Popular in

April

Cheapest in

October

Average price

฿36,469
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 22/9-18/10
  • 2 total stops
  • 67h 15m total
  • Bangkok to Washington, D.C.
Search Deals
8/11
  • 8/11
  • 3 total stops
  • 55h 00m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (฿6,505 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (฿1,986 potential savings vs. average return price).
Search Deals
Average for return flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Washington, D.C. that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 18 July 2026.
Use the filters below to find and compare flights to Washington, D.C. that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 1/9

07:00-23:59

2 stops27h 59m

Washington, D.C. Reagan-National

Tue 8/9

17:10-09:35

3 stops29h 25m

฿34,351

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 19/11

07:10-00:30

2 stops29h 20m

Washington, D.C. Dulles Intl

Mon 23/11

11:10-05:10

1 stop30h 00m

฿34,351

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sun 13/9

07:00-22:30

2 stops26h 30m

Washington, D.C. Reagan-National

Tue 22/9

07:46-04:35

2 stops33h 49m

฿34,385

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 27/8

15:45-09:23

3 stops28h 38m

Washington, D.C. Dulles Intl

Fri 28/8

13:00-09:35

2 stops33h 35m

฿34,486

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 28/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Thu 15/10

06:45-23:55

2 stops30h 10m

฿35,662

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 28/9

15:45-09:59

3 stops29h 14m

Washington, D.C. Reagan-National

Thu 15/10

06:00-23:55

2 stops30h 55m

฿39,091

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 18/11

02:00-15:55

1 stop25h 55m

Washington, D.C. Dulles Intl

Mon 23/11

20:05-12:15

1 stop28h 10m

฿39,191

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 28/9

07:05-08:55

2 stops36h 50m

Washington, D.C. Reagan-National

Thu 15/10

07:59-21:45

2 stops26h 46m

฿42,418

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 27/8

17:30-05:40

2 stops23h 10m

Washington, D.C. Dulles Intl

Thu 3/9

17:47-09:45

2 stops28h 58m

฿42,418

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 16/8

21:35-15:50

1 stop29h 15m

Washington, D.C. Dulles Intl

Wed 21/10

12:15-05:55

1 stop30h 40m

฿42,754

Flights are sorted by cheapest return flights first.

Deals found on 15/7

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to Washington, D.C.

How long is the flight to Washington, D.C.?

On average, a flight from Bangkok to Washington, D.C. takes 28 hours 3 minutes. Flights to Washington, D.C. from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Washington, D.C.?

The most popular airlines flying from Bangkok to Washington, D.C. are United Airlines, Korean Air and เอทิฮัดแอร์เวย์.

United Airlines
United Airlines
From ฿27,500
Korean Air
Korean Air
From ฿33,890
เอทิฮัดแอร์เวย์
เอทิฮัดแอร์เวย์
From ฿33,528

What are the cheapest airlines that fly to Washington, D.C.?

The cheapest airlines flying from Bangkok to Washington, D.C. are United Airlines, เอทิฮัดแอร์เวย์ and Korean Air.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 mm per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

When is the best time to book a flight to Washington, D.C.?

The best time to book flights to Washington, D.C. is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

FAQs about flying to Washington, D.C.

  • Can I find cheaper flights to Washington, D.C. if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Washington, D.C. on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Washington, D.C.?

    Based on reviews from Cheapflights users, United Airlines is rated the highest out of the airlines that fly to Washington, D.C..

  • What is the cheapest airport to fly to in Washington, D.C.?

    Baltimore/Washington is currently the cheapest airport to fly to in Washington, D.C.. One-way flights to Baltimore/Washington typically cost ฿2,770, while return flights cost around ฿50,660.

  • Where does the fastest flight to Washington, D.C. depart from?

    For those looking to save time traveling to Washington, D.C., Bangkok offers the quickest one-way flight (25 hours 49 minutes).

  • Does Washington, D.C. Dulles Intl have rental cars?

    Yes. Those touching down at Washington, D.C. Dulles Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Washington, D.C. Dulles Intl?

    Yes. Washington, D.C. Dulles Intl has hotels nearby for those requiring accommodations. Sleepbox Lounge Iad, Dulles International Airport is the closest property to Washington, D.C. Dulles Intl (0.0 km away from Washington, D.C. Dulles Intl).

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Airports serving Washington, D.C.

Book a flight to or from one of these Washington, D.C. airports.
Flights to Reagan-National
Flights to Dulles Intl
Flights from Reagan-National
Flights from Dulles Intl

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How does Cheapflights help users find flights to Washington, D.C.?

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Why should you use Cheapflights to find cheap flight tickets to Washington, D.C.?

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