฿17,790+ Cheap flights to Washington, D.C.

— WAS
18 Sep — 25 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.

Sat 19/1215:20 -
1 stop35h 25m
Fri 15/117:50 -
1 stop31h 50m
Deal found 19/8฿29,165
Tue 20/1015:25 -
1 stop35h 20m
Sun 25/1018:50 -
1 stop31h 50m
Deal found 15/8฿30,256
Thu 10/922:45 -
3 stops36h 25m
Wed 23/915:10 -
1 stop40h 00m
Deal found 16/8฿30,520
Fri 13/1115:20 -
1 stop34h 30m
Sun 22/1117:50 -
1 stop31h 50m
Deal found 15/8฿31,546
Tue 15/921:00 -
1 stop23h 45m
Tue 22/915:10 -
1 stop21h 45m
Deal found 16/8฿31,678
Thu 10/909:15 -
1 stop35h 30m
Wed 23/915:10 -
1 stop28h 35m
Deal found 16/8฿32,339
Sat 10/1003:15 -
1 stop41h 30m
Wed 3/314:35 -
1 stop39h 25m
Deal found 17/8฿32,637
Tue 10/1120:50 -
1 stop24h 15m
Tue 17/1114:35 -
1 stop39h 25m
Deal found 19/8฿32,835
Tue 15/907:00 -
2 stops25h 05m
Tue 22/913:04 -
3 stops33h 31m
Deal found 16/8฿34,224
Sun 20/1216:55 -
3 stops29h 59m
Thu 7/106:00 -
2 stops28h 50m
Deal found 19/8฿34,687
Fri 13/1109:10 -
2 stops25h 20m
Sun 22/1111:55 -
3 stops35h 35m
Deal found 15/8฿35,480
Tue 20/1015:45 -
1 stop35h 28m
Sun 25/1009:30 -
2 stops26h 20m
Deal found 15/8฿36,406

Find flight deals to Washington, D.C.

Return from

฿29,165

One-way from

฿17,790

Popular in

August

Cheapest in

October

Average price

฿69,771
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 19/12-15/1
  • 2 total stops
  • 67h 15m total
  • Bangkok to Washington, D.C.
Search Deals
29/10
  • 29/10
  • 3 total stops
  • 51h 51m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (฿7,623 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (฿2,620 potential savings vs. average return price).
Search Deals
Average for return flights in August 2026
Search Deals

Cheapflights Fare Finder

 
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

Tue 20/10

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 25/10

08:23-22:50

2 stops27h 27m

฿34,059

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

08:30-11:30

3 stops39h 00m

฿34,158

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Tue 15/9

09:35-05:55

2 stops31h 20m

Washington, D.C. Dulles Intl

Tue 22/9

17:15-09:35

3 stops29h 20m

฿34,158

BangkokWashington, D.C.

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

BKKDCA

Bangkok Suvarnabhumi

Tue 15/9

07:00-21:05

2 stops25h 05m

Washington, D.C. Reagan-National

Tue 22/9

13:04-09:35

3 stops33h 31m

฿34,224

BangkokWashington, D.C.

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

BKKDCA

Bangkok Suvarnabhumi

Thu 24/9

07:00-21:05

2 stops25h 05m

Washington, D.C. Reagan-National

Mon 28/9

14:05-04:35

2 stops27h 30m

฿34,224

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Sat 19/9

09:35-00:47

2 stops50h 12m

Washington, D.C. Dulles Intl

Wed 7/10

22:13-23:55

2 stops38h 42m

฿34,356

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Fri 13/11

16:55-13:35

3 stops32h 40m

Washington, D.C. Dulles Intl

Sun 22/11

06:39-11:30

2 stops40h 51m

฿34,422

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Sun 30/8

15:45-11:52

3 stops31h 07m

Washington, D.C. Dulles Intl

Sat 5/9

09:00-09:35

2 stops37h 35m

฿34,422

BangkokWashington, D.C.

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

BKKDCA

Bangkok Suvarnabhumi

Sun 20/12

16:55-10:54

3 stops29h 59m

Washington, D.C. Reagan-National

Thu 7/1

06:00-22:50

2 stops28h 50m

฿34,687

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Fri 4/9

02:35-13:43

2 stops46h 08m

Washington, D.C. Dulles Intl

Sun 25/10

18:59-23:20

2 stops41h 21m

฿38,258

Flights are sorted by cheapest return flights first.

Deals found on 15/8

Showing 1-10 of 54 resultsSorted by cheapest first
1
2
3
...
6

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

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 26 hours 44 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, เอทิฮัดแอร์เวย์ and Korean Air.

United Airlines
United Airlines
From ฿26,761
เอทิฮัดแอร์เวย์
เอทิฮัดแอร์เวย์
From ฿32,984
Korean Air
Korean Air
From ฿33,341

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

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

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 ฿2,725, while return flights cost around ฿49,838.

  • 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 47 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

Airports serving Washington, D.C.

Flights to Reagan-National
Flights to Dulles Intl
Flights from Reagan-National
Flights from Dulles Intl

Fly with Cheapflights

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!

Can Cheapflights find flights to Washington, D.C. with no change fees?

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

Can Cheapflights notify me if prices for flights to Washington, D.C. become cheaper?

Yes! Start tracking prices for Washington, D.C. flights today and get alerted when prices change. To subscribe and begin receiving alerts, click the bell icon next to the flight deals above and provide your email address.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.