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฿20,352+ Cheap flights to Dulles Intl

— IAD
30 Sep — 7 Oct1
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

Fri 4/908:15 -
1 stop24h 45m
Wed 16/901:15 -
1 stop28h 35m
Deal found 31/8฿25,092
Sat 19/1212:40 -
1 stop20h 15m
Fri 15/123:55 -
1 stop22h 55m
Deal found 29/8฿26,252
Sun 25/1015:20 -
1 stop35h 25m
Sun 29/1117:50 -
1 stop31h 50m
Deal found 30/8฿26,352
Mon 31/812:40 -
1 stop20h 50m
Sat 12/901:15 -
1 stop22h 25m
Deal found 30/8฿26,617
Mon 14/912:40 -
1 stop20h 20m
Sat 10/1001:15 -
1 stop22h 25m
Deal found 31/8฿26,948
Tue 22/915:25 -
1 stop35h 20m
Sat 7/1117:50 -
1 stop31h 50m
Deal found 30/8฿26,981
Wed 30/912:40 -
1 stop20h 20m
Sat 31/1000:55 -
1 stop22h 55m
Deal found 29/8฿27,180
Wed 30/912:40 -
1 stop20h 20m
Mon 2/1123:55 -
1 stop28h 55m
Deal found 29/8฿27,213
Fri 25/1212:40 -
1 stop20h 15m
Sat 9/123:55 -
1 stop33h 50m
Deal found 28/8฿27,246
Sun 20/920:25 -
2 stops48h 20m
Sun 8/1123:35 -
1 stop27h 55m
Deal found 28/8฿44,615
Tue 20/1015:30 -
2 stops29h 15m
Sun 25/1011:30 -
2 stops24h 50m
Deal found 29/8฿45,477
Tue 20/1012:10 -
1 stop31h 30m
Sun 25/1011:15 -
1 stop21h 55m
Deal found 29/8฿48,692

Find flight deals to Dulles Intl Airport

Return from

฿26,252

One-way from

฿20,352

Popular in

August

Cheapest in

October

Average price

฿69,939
Thai Airways
  • Thai Airways
  • 19/12-15/1
  • 2 total stops
  • 43h 10m total
  • Bangkok to Washington, D.C.
Search Deals
AIR PREMIA
  • AIR PREMIA
  • 8/11
  • 1 total stop
  • 33h 40m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (฿7,642 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (฿2,626 potential savings vs. average return price).
Search Deals
Average for return flights in August 2026
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Cheapflights Fare Finder

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

BKKIAD

Bangkok Suvarnabhumi

Sun 20/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Thu 24/9

08:20-04:35

2 stops33h 15m

฿34,008

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Sun 4/10

09:35-07:01

2 stops32h 26m

Washington, D.C. Dulles Intl

Mon 26/10

15:37-11:30

3 stops32h 53m

฿34,075

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Sun 20/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 8/11

10:15-05:10

2 stops30h 55m

฿34,207

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Mon 12/10

15:45-16:01

3 stops35h 16m

Washington, D.C. Dulles Intl

Mon 19/10

17:45-09:35

2 stops28h 50m

฿34,704

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Fri 25/12

16:55-10:02

3 stops29h 07m

Washington, D.C. Dulles Intl

Sat 9/1

17:55-00:20

2 stops42h 25m

฿34,804
Fastest return journey

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Thu 24/12

21:30-09:50

1 stop24h 20m

Washington, D.C. Dulles Intl

Sat 2/1

06:00-23:20

2 stops29h 20m

฿41,433

BangkokWashington, D.C.

DMK Bangkok Don Mueang Intl - IAD Washington, D.C. Dulles Intl

DMKIAD

Bangkok Don Mueang Intl

Mon 28/9

12:10-08:50

1 stop31h 40m

Washington, D.C. Dulles Intl

Mon 5/10

10:55-20:45

1 stop22h 50m

฿48,692

BangkokWashington, D.C.

DMK Bangkok Don Mueang Intl - IAD Washington, D.C. Dulles Intl

DMKIAD

Bangkok Don Mueang Intl

Wed 30/9

23:50-08:40

1 stop43h 50m

Washington, D.C. Dulles Intl

Mon 2/11

10:30-20:10

1 stop21h 40m

฿48,891

BangkokWashington, D.C.

DMK Bangkok Don Mueang Intl - IAD Washington, D.C. Dulles Intl

DMKIAD

Bangkok Don Mueang Intl

Tue 20/10

12:10-08:40

1 stop31h 30m

Washington, D.C. Dulles Intl

Sun 29/11

10:30-07:55

1 stop33h 25m

฿51,013

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Thu 26/11

16:55-22:25

3 stops41h 30m

Washington, D.C. Dulles Intl

Sun 20/12

22:45-05:10

2 stops42h 25m

฿51,443

Flights are sorted by cheapest return flights first.

Deals found on 30/8

Showing 1-10 of 46 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

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 25 hours 2 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, เอทิฮัดแอร์เวย์ and Korean Air.

United Airlines
United Airlines
From ฿26,826
เอทิฮัดแอร์เวย์
เอทิฮัดแอร์เวย์
From ฿33,064
Korean Air
Korean Air
From ฿33,421

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

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

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 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

Crew

8.7

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.4

Entertainment

8.2

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

Crew

8.7

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.4

Entertainment

8.2

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
10,154 reviews
Korean Air
8.4
Very Good
1,221 reviews
Check prices

Crew

8.7

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.4

Entertainment

8.2

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
1,529 reviews
Korean Air
8.4
Very Good
1,221 reviews
Check prices

Crew

8.7

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.4

Entertainment

8.2

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 (20 hours 50 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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