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฿20,120+ Cheap flights to Dulles Intl

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 19/10. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
23 May — 30 May1
1 adult
1 adult, Economy, 0 bags

Flights to Dulles Intl in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Dulles Intl Airport
Explore the most affordable flight options available to Dulles Intl Airport. Find the lowest fares based on data from user searches, with prices last updated on 23 April 2026.

Wed 29/419:00
BKK
-
IAD
1 stop34h 10m
Qatar Airways
Thu 7/521:00
IAD
-
BKK
1 stop30h 10m
Qatar Airways
Deal found 22/4฿34,478
Thu 1/1017:30
BKK
-
IAD
2 stops23h 10m
Multiple Airlines
Mon 2/1117:38
IAD
-
BKK
2 stops28h 12m
Multiple Airlines
Deal found 22/4฿35,057
Thu 17/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Mon 21/915:40
IAD
-
BKK
2 stops25h 55m
United Airlines
Deal found 22/4฿35,443
Tue 29/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Tue 27/1017:15
IAD
-
BKK
3 stops31h 10m
United Airlines
Deal found 22/4฿35,508
Thu 30/419:45
BKK
-
IAD
1 stop33h 35m
Multiple Airlines
Mon 4/515:10
IAD
-
BKK
1 stop28h 35m
Multiple Airlines
Deal found 19/4฿35,572
Thu 30/402:30
BKK
-
IAD
1 stop26h 50m
Qatar Airways
Thu 7/521:00
IAD
-
BKK
1 stop22h 55m
Qatar Airways
Deal found 22/4฿35,765
Thu 24/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Mon 28/915:30
IAD
-
BKK
2 stops26h 05m
United Airlines
Deal found 19/4฿35,830
Wed 13/502:30
BKK
-
IAD
1 stop26h 40m
Multiple Airlines
Thu 28/521:00
IAD
-
BKK
1 stop29h 45m
Multiple Airlines
Deal found 22/4฿35,958
Wed 10/619:45
BKK
-
IAD
1 stop33h 35m
Multiple Airlines
Wed 9/921:00
IAD
-
BKK
1 stop23h 15m
Multiple Airlines
Deal found 21/4฿35,991
Sat 13/621:05
DMK
-
IAD
3 stops47h 40m
Multiple Airlines
Tue 11/815:10
IAD
-
DMK
2 stops26h 30m
Multiple Airlines
Deal found 22/4฿38,984
Fri 1/513:40
DMK
-
IAD
2 stops30h 00m
Multiple Airlines
Fri 8/510:55
IAD
-
DMK
2 stops25h 10m
Multiple Airlines
Deal found 22/4฿39,725
Wed 27/521:05
DMK
-
IAD
2 stops32h 15m
Multiple Airlines
Thu 3/911:05
IAD
-
DMK
2 stops30h 35m
Multiple Airlines
Deal found 20/4฿43,813

Find flight deals to Dulles Intl Airport

Find the latest flights to Dulles Intl 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 23 April 2026.

Return from

฿34,993

One-way from

฿20,120

Popular in

April

Cheapest in

October

Average price

฿59,619
17/5-31/5
  • 17/5-31/5
  • 4 total stops
  • 81h 50m total
  • Bangkok to Washington, D.C.
Search Deals
19/10
  • 19/10
  • 2 total stops
  • 31h 38m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (฿7,910 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (฿2,062 potential savings vs. average return price).
Search Deals
Average for return flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Dulles Intl 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 23 April 2026.
Use the filters below to find and compare flights to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 2/5

19:40-18:20

1 stop33h 40m

Washington, D.C. Dulles Intl

Thu 7/5

21:00-06:55

1 stop22h 55m

฿35,765

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 10/6

19:45-18:20

1 stop33h 35m

Washington, D.C. Dulles Intl

Wed 9/9

21:00-12:55

1 stop28h 55m

฿35,958

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 13/5

19:40-18:10

1 stop33h 30m

Washington, D.C. Dulles Intl

Sat 30/5

21:00-13:45

1 stop29h 45m

฿36,763

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 5/5

02:30-18:10

1 stop26h 40m

Washington, D.C. Dulles Intl

Wed 13/5

21:00-13:45

1 stop29h 45m

฿38,244

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 29/4

01:00-18:10

1 stop28h 10m

Washington, D.C. Dulles Intl

Wed 6/5

21:00-14:00

2 stops30h 00m

฿38,469

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 8/5

19:00-18:10

1 stop34h 10m

Washington, D.C. Dulles Intl

Fri 15/5

21:00-13:45

1 stop29h 45m

฿39,467

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 30/4

01:00-18:20

1 stop28h 20m

Washington, D.C. Dulles Intl

Sat 9/5

21:00-13:25

2 stops29h 25m

฿40,047

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 22/5

01:00-18:10

1 stop28h 10m

Washington, D.C. Dulles Intl

Tue 30/6

21:00-13:25

1 stop29h 25m

฿40,755

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 22/5

01:00-18:10

1 stop28h 10m

Washington, D.C. Dulles Intl

Sun 7/6

21:00-13:45

1 stop29h 45m

฿41,785

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 6/5

18:40-18:20

2 stops34h 40m

Washington, D.C. Dulles Intl

Wed 13/5

21:00-13:45

1 stop29h 45m

฿41,817

Flights are sorted by cheapest return flights first.

Deals found on 18/4

Showing 1-10 of 40 resultsSorted by cheapest first
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Best time to book a flight to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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. Dulles Intl Airport

When is the best time to book a flight to Dulles Intl?

Use this chart to determine the optimal time to book a return flight from Bangkok to Dulles Intl. Price data was last updated on 17 April 2026.

To ensure you get the cheapest price possible for a flight to Dulles Intl, you should look to book at least 81 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

How long is the flight to Dulles Intl?

On average, a flight from Bangkok to Dulles Intl takes 24 hours 52 minutes. Flights to Dulles Intl 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 Dulles Intl?

The most popular airlines flying from Bangkok to Dulles Intl are United Airlines, ANA and Korean Air.

United Airlines
United Airlines
From ฿31,120
ANA
ANA
From ฿34,107
Korean Air
Korean Air
From ฿32,553
Qatar Airways
Qatar Airways
From ฿36,184

What are the cheapest airlines that fly to Dulles Intl?

The cheapest airlines flying from Bangkok to Dulles Intl are United Airlines, เอทิฮัดแอร์เวย์ and Korean Air.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Dulles Intl 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 Dulles Intl when rainfall is around 66.0 mm.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Dulles Intl, 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 Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated 23 April 2026.
Get a feel of what it's like to fly with ANA,Korean Air, andQatar Airways to the United States by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very Good
1,187 reviews
Check prices

Comfort

8.2

Food

7.8

Overall

8.4

Crew

8.7

Entertainment

8.0

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
ANA
8.4
Very Good
1,187 reviews
ANA
8.4
Very Good
1,187 reviews
Check prices

Comfort

8.2

Food

7.8

Overall

8.4

Crew

8.7

Entertainment

8.0

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
Korean Air
8.4
Very Good
1,212 reviews
ANA
8.4
Very Good
1,187 reviews
Check prices

Comfort

8.2

Food

7.8

Overall

8.4

Crew

8.7

Entertainment

8.0

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
Qatar Airways
7.4
Good
3,728 reviews
ANA
8.4
Very Good
1,187 reviews
Check prices

Comfort

8.2

Food

7.8

Overall

8.4

Crew

8.7

Entertainment

8.0

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
United Airlines
7.4
Good
9,635 reviews
ANA
8.4
Very Good
1,187 reviews
Check prices

Comfort

8.2

Food

7.8

Overall

8.4

Crew

8.7

Entertainment

8.0

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
เอทิฮัดแอร์เวย์
7.3
Good
1,433 reviews
ANA
8.4
Very Good
1,187 reviews
Check prices

Comfort

8.2

Food

7.8

Overall

8.4

Crew

8.7

Entertainment

8.0

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.

FAQs about flying to Dulles Intl

  • Can I find cheaper flights to Dulles Intl 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 Dulles Intl on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Dulles Intl?

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

  • Where does the fastest flight to Dulles Intl depart from?

    For those looking to save time traveling to Dulles Intl, Bangkok offers the quickest one-way flight (23 hours 0 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

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