฿19,285+ 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 29/10. Fares are subject to change and may not be available on all flights or dates of travel.
— WAS
12 Sep — 19 Sep1
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 13 August 2026.

Sun 4/1015:25 -
1 stop35h 20m
Sun 18/1018:50 -
1 stop31h 55m
Deal found 8/8฿27,191
Sun 13/915:25 -
1 stop35h 20m
Sun 20/918:50 -
1 stop31h 55m
Deal found 10/8฿27,688
Sat 19/1215:20 -
1 stop35h 25m
Fri 15/117:50 -
1 stop31h 50m
Deal found 10/8฿31,525
Thu 3/915:55 -
1 stop28h 50m
Wed 16/915:10 -
1 stop21h 45m
Deal found 10/8฿32,319
Fri 9/1021:00 -
1 stop23h 45m
Fri 16/1015:10 -
1 stop21h 45m
Deal found 12/8฿32,749
Sat 19/1220:50 -
1 stop24h 15m
Fri 15/114:35 -
1 stop28h 00m
Deal found 11/8฿32,914
Wed 26/809:35 -
2 stops47h 55m
Sat 29/810:30 -
3 stops36h 05m
Deal found 12/8฿34,171
Fri 13/1107:10 -
2 stops27h 20m
Wed 24/211:30 -
2 stops29h 40m
Deal found 11/8฿34,337
Thu 5/1109:10 -
2 stops43h 35m
Mon 9/1108:30 -
3 stops39h 00m
Deal found 8/8฿34,403
Sun 13/915:45 -
3 stops28h 10m
Sun 20/906:00 -
2 stops35h 35m
Deal found 12/8฿34,502
Sat 5/915:45 -
3 stops29h 14m
Sat 12/907:48 -
2 stops27h 27m
Deal found 8/8฿34,833
Tue 10/1109:40 -
2 stops24h 58m
Wed 24/209:40 -
2 stops32h 50m
Deal found 11/8฿36,288

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 13 August 2026.

Return from

฿27,191

One-way from

฿18,326

Popular in

August

Cheapest in

October

Average price

฿69,798
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 4/10-18/10
  • 2 total stops
  • 67h 15m total
  • Bangkok to Washington, D.C.
Search Deals
13/10
  • 13/10
  • 3 total stops
  • 59h 22m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (฿7,626 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (฿2,621 potential savings vs. average return price).
Search Deals
Average for return flights in August 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 13 August 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 Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Fri 5/2

01:15-13:50

1 stop24h 35m

Washington, D.C. Dulles Intl

Sun 14/2

17:50-13:40

1 stop31h 50m

฿31,723

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Sun 15/11

20:50-09:05

1 stop24h 15m

Washington, D.C. Dulles Intl

Sat 27/2

14:35-18:00

1 stop39h 25m

฿33,973

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Thu 12/11

19:55-09:05

1 stop25h 10m

Washington, D.C. Dulles Intl

Sat 27/2

14:35-06:35

1 stop28h 00m

฿33,973

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Sun 13/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 20/9

15:15-04:35

2 stops26h 20m

฿34,006

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Wed 23/9

21:00-09:45

1 stop23h 45m

Washington, D.C. Dulles Intl

Sun 27/9

15:10-18:10

1 stop40h 00m

฿34,072

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Fri 5/2

07:10-16:56

2 stops45h 46m

Washington, D.C. Reagan-National

Sun 7/2

19:00-11:30

3 stops52h 30m

฿34,237

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Sat 5/9

09:35-07:00

2 stops32h 25m

Washington, D.C. Dulles Intl

Sat 12/9

13:10-09:35

3 stops33h 25m

฿34,403

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Thu 5/11

09:10-22:30

2 stops25h 20m

Washington, D.C. Reagan-National

Mon 9/11

13:05-05:10

2 stops28h 05m

฿34,436

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Sat 6/2

07:10-21:53

2 stops26h 43m

Washington, D.C. Reagan-National

Sun 14/2

14:00-05:10

2 stops27h 10m

฿34,469

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Sat 5/9

15:45-09:59

3 stops29h 14m

Washington, D.C. Reagan-National

Sat 12/9

07:48-22:15

2 stops27h 27m

฿34,833

Flights are sorted by cheapest return flights first.

Deals found on 11/8

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 25 hours 7 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 Qatar Airways.

United Airlines
United Airlines
From ฿27,065
Korean Air
Korean Air
From ฿33,354
Qatar Airways
Qatar Airways
From ฿36,078
เอทิฮัดแอร์เวย์
เอทิฮัดแอร์เวย์
From ฿32,997

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 ฿2,726, while return flights cost around ฿49,858.

  • 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 (23 hours 45 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

Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights to Washington, D.C.. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight to Washington, D.C. by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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Users can book flights with no change fees policies with our dedicated filters. Book flights to Washington, D.C. flexibly with Cheapflights today.

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