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฿20,748+ 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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
10 Aug — 17 Aug1
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 11 July 2026.

Wed 23/1215:20
BKK
-
IAD
1 stop35h 25m
ซาอุเดียแอร์ไลน์
Sat 2/118:10
IAD
-
BKK
1 stop31h 30m
ซาอุเดียแอร์ไลน์
Deal found 7/7฿28,217
Tue 13/1015:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sat 31/1018:10
IAD
-
BKK
1 stop32h 30m
ซาอุเดียแอร์ไลน์
Deal found 8/7฿29,644
Wed 30/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Sun 4/1008:20
IAD
-
BKK
2 stops33h 15m
United Airlines
Deal found 8/7฿33,794
Fri 25/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Tue 27/1015:34
IAD
-
BKK
3 stops32h 56m
United Airlines
Deal found 10/7฿33,827
Thu 27/807:00
BKK
-
IAD
2 stops33h 55m
United Airlines
Fri 28/808:20
IAD
-
BKK
2 stops33h 15m
United Airlines
Deal found 10/7฿33,860
Sat 26/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Wed 28/1008:16
IAD
-
BKK
2 stops29h 04m
United Airlines
Deal found 10/7฿33,926
Thu 3/915:25
BKK
-
IAD
1 stop35h 20m
Multiple Airlines
Wed 16/915:10
IAD
-
BKK
1 stop28h 35m
Multiple Airlines
Deal found 10/7฿34,092
Thu 12/1109:10
BKK
-
IAD
2 stops27h 20m
United Airlines
Tue 9/318:50
IAD
-
BKK
2 stops28h 40m
United Airlines
Deal found 11/7฿34,125
Thu 24/912:10
DMK
-
IAD
1 stop31h 30m
Emirates
Mon 28/910:55
IAD
-
DMK
1 stop37h 15m
Emirates
Deal found 8/7฿48,566
Thu 3/923:50
DMK
-
IAD
1 stop43h 50m
Emirates
Wed 16/910:55
IAD
-
DMK
1 stop37h 15m
Emirates
Deal found 7/7฿48,798
Fri 25/923:50
DMK
-
IAD
1 stop43h 50m
Emirates
Tue 27/1011:15
IAD
-
DMK
1 stop22h 00m
Emirates
Deal found 10/7฿49,230
Tue 13/1012:10
DMK
-
IAD
1 stop31h 30m
Emirates
Sat 31/1011:15
IAD
-
DMK
1 stop22h 00m
Emirates
Deal found 8/7฿49,396

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 11 July 2026.

Return from

฿28,217

One-way from

฿20,748

Popular in

April

Cheapest in

October

Average price

฿36,018
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 23/12-2/1
  • 2 total stops
  • 66h 55m total
  • Bangkok to Washington, D.C.
Search Deals
STARLUX Airlines
  • STARLUX Airlines
  • 15/12
  • 2 total stops
  • 47h 58m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (฿6,425 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (฿1,961 potential savings vs. average return price).
Search Deals
Average for return flights in July 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 11 July 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

Tue 13/10

15:25-15:45

1 stop35h 20m

Washington, D.C. Dulles Intl

Sat 31/10

18:10-13:40

1 stop32h 30m

฿29,644

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 30/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 4/10

08:20-04:35

2 stops33h 15m

฿33,794

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 27/8

07:00-05:55

2 stops33h 55m

Washington, D.C. Dulles Intl

Fri 28/8

08:20-04:35

2 stops33h 15m

฿33,860

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 13/10

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sat 31/10

22:23-00:20

2 stops38h 57m

฿34,026

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 23/12

16:55-11:43

3 stops30h 48m

Washington, D.C. Dulles Intl

Sat 2/1

08:25-11:30

3 stops39h 05m

฿42,823

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 1/11

02:00-15:55

1 stop25h 55m

Washington, D.C. Dulles Intl

Fri 6/11

20:05-11:55

2 stops27h 50m

฿42,989

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 28/7

02:30-15:40

1 stop24h 10m

Washington, D.C. Dulles Intl

Thu 27/8

21:00-12:55

1 stop28h 55m

฿45,844

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 8/8

15:45-19:22

3 stops38h 37m

Washington, D.C. Dulles Intl

Sat 15/8

08:20-09:35

2 stops38h 15m

฿46,209

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Thu 24/9

12:10-08:40

1 stop31h 30m

Washington, D.C. Dulles Intl

Mon 28/9

10:55-11:10

1 stop37h 15m

฿48,566

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Wed 14/10

12:10-08:40

1 stop31h 30m

Washington, D.C. Dulles Intl

Wed 28/10

11:15-20:15

1 stop22h 00m

฿48,599

Flights are sorted by cheapest return flights first.

Deals found on 6/7

Showing 1-10 of 38 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

How long is the flight to Dulles Intl?

On average, a flight from Bangkok to Dulles Intl takes 26 hours 46 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, Korean Air and เอทิฮัดแอร์เวย์.

United Airlines
United Airlines
From ฿27,160
Korean Air
Korean Air
From ฿33,471
เอทิฮัดแอร์เวย์
เอทิฮัดแอร์เวย์
From ฿33,113

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).

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

To ensure you get the cheapest price possible for a flight to Dulles Intl, you should look to book at least 90 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.

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 11 July 2026.
Get a feel of what it's like to fly with Korean Air,United Airlines, andเอทิฮัดแอร์เวย์ 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.
Korean Air
8.4
Very Good
1,221 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Crew

8.7

Overall

8.4

Boarding

8.5

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very Good
1,221 reviews
Korean Air
8.4
Very Good
1,221 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Crew

8.7

Overall

8.4

Boarding

8.5

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
United Airlines
7.4
Good
9,981 reviews
Korean Air
8.4
Very Good
1,221 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Crew

8.7

Overall

8.4

Boarding

8.5

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
เอทิฮัดแอร์เวย์
7.3
Good
1,475 reviews
Korean Air
8.4
Very Good
1,221 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Crew

8.7

Overall

8.4

Boarding

8.5

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

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 22 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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