฿18,270+ 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 30/10. Fares are subject to change and may not be available on all flights or dates of travel.
— WAS
1 Sep — 8 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 2 August 2026.

Sun 13/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 20/918:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 30/7฿26,687
Thu 17/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 20/918:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 30/7฿30,261
Sun 13/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Fri 18/918:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 31/7฿30,328
Tue 4/809:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Mon 10/806:10
IAD
-
BKK
2 stops35h 25m
United Airlines
Deal found 29/7฿34,136
Wed 9/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Sun 13/915:15
IAD
-
BKK
2 stops26h 20m
United Airlines
Deal found 29/7฿34,203
Mon 30/1109:10
BKK
-
IAD
1 stop36h 00m
United Airlines
Tue 30/310:08
IAD
-
BKK
3 stops36h 27m
United Airlines
Deal found 1/8฿34,303
Wed 9/909:35
BKK
-
DCA
2 stops45h 34m
United Airlines
Sat 12/908:20
DCA
-
BKK
2 stops33h 15m
United Airlines
Deal found 28/7฿34,336
Tue 4/809:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Tue 11/822:27
IAD
-
BKK
2 stops43h 08m
United Airlines
Deal found 29/7฿34,336
Fri 4/907:00
BKK
-
IAD
2 stops28h 30m
United Airlines
Tue 8/917:15
IAD
-
BKK
3 stops29h 20m
United Airlines
Deal found 29/7฿34,370
Fri 28/807:00
BKK
-
IAD
2 stops39h 52m
United Airlines
Fri 4/912:50
IAD
-
BKK
1 stop28h 45m
United Airlines
Deal found 29/7฿34,403
Sat 12/907:00
BKK
-
IAD
1 stop38h 05m
United Airlines
Sat 26/916:02
IAD
-
BKK
3 stops30h 33m
United Airlines
Deal found 28/7฿34,436
Fri 4/907:00
BKK
-
DCA
2 stops27h 59m
United Airlines
Tue 8/907:46
DCA
-
BKK
2 stops33h 49m
United Airlines
Deal found 30/7฿34,470

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 2 August 2026.

Return from

฿26,687

One-way from

฿18,270

Popular in

April

Cheapest in

October

Average price

฿61,758
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 13/9-20/9
  • 2 total stops
  • 67h 15m total
  • Bangkok to Washington, D.C.
Search Deals
30/10
  • 30/10
  • 3 total stops
  • 35h 27m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (฿5,365 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (฿1,863 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 2 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 - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 9/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 13/9

15:15-04:35

2 stops26h 20m

฿34,303

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Wed 9/9

09:35-22:30

2 stops47h 55m

Washington, D.C. Reagan-National

Sat 12/9

15:30-09:35

3 stops31h 05m

฿34,336

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 13/9

07:00-00:32

2 stops28h 32m

Washington, D.C. Dulles Intl

Sat 26/9

17:20-04:35

2 stops48h 15m

฿34,370

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Fri 4/9

07:00-22:13

2 stops26h 13m

Washington, D.C. Reagan-National

Tue 8/9

11:59-09:35

3 stops34h 36m

฿34,470

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 10/9

09:35-16:43

2 stops66h 08m

Washington, D.C. Reagan-National

Mon 14/9

15:30-04:35

2 stops26h 05m

฿34,503

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 28/8

15:45-09:28

3 stops28h 43m

Washington, D.C. Dulles Intl

Fri 4/9

08:20-09:35

2 stops38h 15m

฿34,670

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 26/11

16:55-00:30

3 stops43h 35m

Washington, D.C. Dulles Intl

Wed 24/2

17:30-11:30

2 stops30h 00m

฿34,837

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 17/9

07:00-21:28

2 stops25h 28m

Washington, D.C. Dulles Intl

Sun 20/9

12:35-04:35

1 stop29h 00m

฿35,706

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 8/9

07:00-00:44

2 stops28h 44m

Washington, D.C. Dulles Intl

Tue 6/10

12:15-04:35

1 stop29h 20m

฿35,706

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 26/11

16:55-08:24

3 stops27h 29m

Washington, D.C. Reagan-National

Wed 24/2

13:00-05:10

2 stops28h 10m

฿36,173

Flights are sorted by cheapest return flights first.

Deals found on 1/8

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 27 hours 49 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 ฿27,328
Korean Air
Korean Air
From ฿33,678
เอทิฮัดแอร์เวย์
เอทิฮัดแอร์เวย์
From ฿33,318
Qatar Airways
Qatar Airways
From ฿37,543

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 ฿2,753, while return flights cost around ฿50,342.

  • 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 (24 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

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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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