Find flights
Airlines

฿19,178+ 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 19/5. Fares are subject to change and may not be available on all flights or dates of travel.
— WAS
30 May — 6 Jun1
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 30 April 2026.

Fri 15/501:00
BKK
-
IAD
1 stop28h 20m
Qatar Airways
Fri 7/821:00
IAD
-
BKK
1 stop22h 20m
Qatar Airways
Deal found 27/4฿35,449
Fri 15/502:30
BKK
-
IAD
1 stop26h 50m
Multiple Airlines
Fri 7/821:00
IAD
-
BKK
1 stop23h 15m
Multiple Airlines
Deal found 27/4฿35,613
Wed 8/701:50
BKK
-
IAD
1 stop24h 50m
ซาอุเดียแอร์ไลน์
Sat 18/718:50
IAD
-
BKK
1 stop42h 15m
ซาอุเดียแอร์ไลน์
Deal found 27/4฿35,776
Wed 10/619:45
BKK
-
IAD
1 stop33h 35m
Qatar Airways
Wed 9/921:00
IAD
-
BKK
1 stop23h 15m
Qatar Airways
Deal found 27/4฿35,841
Tue 28/415:45
BKK
-
DCA
3 stops28h 11m
United Airlines
Tue 5/511:55
DCA
-
BKK
3 stops34h 40m
United Airlines
Deal found 25/4฿36,005
Thu 16/715:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Fri 14/818:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 26/4฿36,168
Fri 1/519:40
BKK
-
IAD
1 stop33h 40m
Qatar Airways
Sat 9/521:00
IAD
-
BKK
1 stop22h 50m
Qatar Airways
Deal found 26/4฿36,201
Thu 29/1016:55
BKK
-
DCA
3 stops27h 20m
United Airlines
Sun 1/1111:30
DCA
-
BKK
3 stops35h 55m
United Airlines
Deal found 28/4฿36,397
Sun 20/915:45
BKK
-
IAD
3 stops28h 43m
United Airlines
Thu 1/1022:10
IAD
-
BKK
2 stops48h 25m
United Airlines
Deal found 26/4฿36,397
Wed 29/401:50
BKK
-
IAD
1 stop24h 55m
ซาอุเดียแอร์ไลน์
Fri 8/518:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 25/4฿36,462
Thu 30/419:45
BKK
-
IAD
1 stop33h 35m
Qatar Airways
Sat 9/521:00
IAD
-
BKK
1 stop22h 55m
Qatar Airways
Deal found 26/4฿36,495
Wed 10/613:55
BKK
-
IAD
1 stop31h 10m
ANA
Wed 9/915:40
IAD
-
BKK
2 stops27h 15m
ANA
Deal found 30/4฿36,625

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 30 April 2026.

Return from

฿35,449

One-way from

฿19,178

Popular in

April

Cheapest in

October

Average price

฿60,509
Qatar Airways
  • Qatar Airways
  • 15/5-7/8
  • 2 total stops
  • 50h 40m total
  • Bangkok to Washington, D.C.
Search Deals
19/5
  • 19/5
  • 3 total stops
  • 45h 28m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (฿8,028 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (฿2,093 potential savings vs. average return price).
Search Deals
Average for return flights in April 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 30 April 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

Mon 6/7

09:35-07:33

2 stops32h 58m

Washington, D.C. Dulles Intl

Mon 20/7

17:38-09:35

3 stops28h 57m

฿38,030

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 18/5

01:35-20:06

2 stops29h 31m

Washington, D.C. Reagan-National

Tue 26/5

08:00-10:25

2 stops39h 25m

฿38,390

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 25/6

07:00-16:32

2 stops44h 32m

Washington, D.C. Dulles Intl

Wed 22/7

12:15-23:55

1 stop24h 40m

฿39,010

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 13/5

02:30-18:20

1 stop26h 50m

Washington, D.C. Dulles Intl

Thu 11/6

21:00-13:45

1 stop29h 45m

฿39,141

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 26/5

19:40-18:20

1 stop33h 40m

Washington, D.C. Dulles Intl

Fri 29/5

21:00-13:45

1 stop29h 45m

฿39,795

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 7/7

09:35-05:41

2 stops31h 06m

Washington, D.C. Dulles Intl

Tue 29/9

13:05-09:35

3 stops33h 30m

฿39,795

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 17/9

09:55-08:45

1 stop33h 50m

Washington, D.C. Dulles Intl

Mon 21/9

21:00-19:05

1 stop35h 05m

฿40,644

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 10/5

17:00-18:20

2 stops36h 20m

Washington, D.C. Dulles Intl

Sat 13/6

21:00-13:45

1 stop29h 45m

฿42,408

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 10/5

10:40-18:20

2 stops42h 40m

Washington, D.C. Dulles Intl

Fri 12/6

21:00-13:45

1 stop29h 45m

฿42,408

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 30/6

09:15-15:40

1 stop41h 25m

Washington, D.C. Dulles Intl

Sat 4/7

21:00-06:20

1 stop22h 20m

฿43,748

Flights are sorted by cheapest return flights first.

Deals found on 26/4

Showing 1-10 of 60 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
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.

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

The best time to book flights to Washington, D.C. is 35 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.

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

On average, a flight from Bangkok to Washington, D.C. takes 29 hours 57 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, ANA and Korean Air.

United Airlines
United Airlines
From ฿31,584
ANA
ANA
From ฿34,616
Korean Air
Korean Air
From ฿33,039
Qatar Airways
Qatar Airways
From ฿36,724

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).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated 30 April 2026.
Read reviews from past customers who have flown United Airlines to the United States. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,677 reviews
Check prices

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,677 reviews
United Airlines
7.4
Good
9,677 reviews
Check prices

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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.?

    Washington, D.C. Reagan-National is currently the cheapest airport to fly to in Washington, D.C.. One-way flights to Washington, D.C. Reagan-National typically cost ฿3,054, while return flights cost around ฿49,244.

  • 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 21 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.