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฿18,774+ 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
8 Mar — 15 Mar1
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 6 February 2026.

Tue 10/315:20
BKK
-
IAD
1 stop35h 25m
ซาอุเดียแอร์ไลน์
Fri 13/319:10
IAD
-
BKK
1 stop31h 30m
ซาอุเดียแอร์ไลน์
Deal found 5/2฿27,890
Sat 7/212:00
BKK
-
IAD
2 stops43h 20m
IndiGo
Sun 15/221:15
IAD
-
BKK
2 stops35h 50m
IndiGo
Deal found 6/2฿29,923
Tue 24/323:50
BKK
-
IAD
2 stops40h 50m
Multiple Airlines
Tue 31/315:10
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 2/2฿32,115
Sun 10/516:45
BKK
-
IAD
2 stops24h 05m
Multiple Airlines
Sun 13/919:18
IAD
-
BKK
2 stops28h 32m
Multiple Airlines
Deal found 5/2฿32,147
Wed 25/210:10
BKK
-
IAD
2 stops45h 10m
Multiple Airlines
Mon 2/314:35
IAD
-
BKK
1 stop20h 50m
Multiple Airlines
Deal found 3/2฿32,179
Sun 10/522:45
BKK
-
IAD
1 stop23h 05m
AIR PREMIA
Sun 13/913:20
IAD
-
BKK
1 stop44h 50m
AIR PREMIA
Deal found 6/2฿32,306
Mon 20/415:20
BKK
-
IAD
1 stop35h 25m
Multiple Airlines
Mon 27/415:10
IAD
-
BKK
1 stop28h 05m
Multiple Airlines
Deal found 4/2฿32,338
Sat 7/212:00
BKK
-
IAD
2 stops43h 20m
Multiple Airlines
Sun 15/210:40
IAD
-
BKK
1 stop20h 45m
Multiple Airlines
Deal found 3/2฿32,719
Thu 5/315:20
BKK
-
IAD
1 stop35h 25m
Multiple Airlines
Thu 12/315:35
IAD
-
BKK
1 stop20h 50m
Multiple Airlines
Deal found 4/2฿32,941
Wed 1/421:10
DMK
-
IAD
2 stops29h 30m
Multiple Airlines
Tue 21/415:10
IAD
-
DMK
2 stops26h 10m
Multiple Airlines
Deal found 3/2฿34,879
Tue 24/316:00
DMK
-
IAD
2 stops31h 45m
Multiple Airlines
Tue 31/315:10
IAD
-
DMK
2 stops26h 20m
Multiple Airlines
Deal found 4/2฿36,626
Tue 3/321:00
DMK
-
IAD
2 stops30h 55m
Multiple Airlines
Tue 5/515:10
IAD
-
DMK
2 stops26h 15m
Multiple Airlines
Deal found 4/2฿36,689

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 6 February 2026.

Return from

฿27,890

One-way from

฿18,774

Popular in

August

Cheapest in

October

Average price

฿33,735
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 10/3-13/3
  • 2 total stops
  • 66h 55m total
  • Bangkok to Washington, D.C.
Search Deals
11/3
  • 11/3
  • 3 total stops
  • 39h 21m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (฿706 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿916 potential savings vs. average return price).
Search Deals
Average for return flights in February 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 6 February 2026.
Use the filters below to find and compare flights to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Bangkok

Route

Depart

Return

Price

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 10/3

15:20-15:45

1 stop35h 25m

Washington, D.C. Dulles Intl

Fri 13/3

19:10-13:40

1 stop31h 30m

฿27,890

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 24/3

23:50-05:40

2 stops40h 50m

Washington, D.C. Dulles Intl

Tue 31/3

15:10-23:50

1 stop21h 40m

฿32,115

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 25/2

10:10-19:20

2 stops45h 10m

Washington, D.C. Dulles Intl

Mon 2/3

14:35-23:25

1 stop20h 50m

฿32,179

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 5/3

15:20-14:45

1 stop35h 25m

Washington, D.C. Dulles Intl

Thu 12/3

15:35-23:25

1 stop20h 50m

฿32,941

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 10/5

15:45-22:49

3 stops42h 04m

Washington, D.C. Dulles Intl

Sun 13/9

10:08-04:35

2 stops31h 27m

฿33,068

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 24/4

15:45-11:33

3 stops30h 48m

Washington, D.C. Dulles Intl

Sun 3/5

12:15-04:35

1 stop29h 20m

฿33,132

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 3/3

16:55-21:18

3 stops40h 23m

Washington, D.C. Dulles Intl

Tue 12/5

18:55-09:35

2 stops27h 40m

฿33,513

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 18/2

16:55-11:49

3 stops54h 54m

Washington, D.C. Dulles Intl

Wed 25/2

22:05-11:25

2 stops49h 20m

฿33,513

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 3/3

16:55-16:05

3 stops35h 10m

Washington, D.C. Dulles Intl

Wed 22/4

17:55-09:35

2 stops28h 40m

฿33,513

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 1/4

15:25-15:40

3 stops35h 15m

Washington, D.C. Dulles Intl

Tue 21/4

15:10-06:15

1 stop28h 05m

฿33,576

Flights are sorted by cheapest return flights first.

Deals found on 3/2

Showing 1-10 of 41 results
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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 30 January 2026.

To ensure you get the cheapest price possible for a flight to Dulles Intl, you should look to book at least 80 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 25 hours 5 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 ANA.

United Airlines
United Airlines
From ฿30,824
Korean Air
Korean Air
From ฿32,122
ANA
ANA
From ฿33,656
Qatar Airways
Qatar Airways
From ฿35,705

What are the cheapest airlines that fly to Dulles Intl?

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

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 6 February 2026.
Get a feel of what it's like to fly with Korean Air, ANA, 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.
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

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
1,188 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

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!!
ANA
8.4
Very Good
1,087 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

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!!
Qatar Airways
7.4
Good
3,730 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

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
9,244 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

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
1,387 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

Comfort

8.3

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, ซาอุเดียแอร์ไลน์ 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 10 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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