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฿19,870+ 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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
7 Jun — 14 Jun1
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 8 May 2026.

Sat 19/909:35
BKK
-
IAD
2 stops31h 00m
United Airlines
Sat 3/1017:15
IAD
-
BKK
3 stops29h 20m
United Airlines
Deal found 7/5฿35,843
Sat 19/909:35
BKK
-
IAD
2 stops31h 00m
United Airlines
Sun 4/1008:35
IAD
-
BKK
2 stops33h 00m
United Airlines
Deal found 7/5฿35,875
Sun 14/621:35
BKK
-
IAD
1 stop23h 30m
ANA
Tue 4/815:30
IAD
-
BKK
2 stops26h 05m
ANA
Deal found 6/5฿35,940
Mon 15/601:50
BKK
-
IAD
1 stop24h 50m
Multiple Airlines
Wed 5/815:10
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 6/5฿35,972
Sat 26/1220:30
BKK
-
IAD
1 stop23h 50m
Qatar Airways
Mon 11/120:05
IAD
-
BKK
1 stop22h 10m
Qatar Airways
Deal found 5/5฿36,197
Sat 10/1021:05
BKK
-
IAD
1 stop29h 35m
Qatar Airways
Sat 24/1021:00
IAD
-
BKK
1 stop22h 40m
Qatar Airways
Deal found 6/5฿36,229
Sun 11/1002:30
BKK
-
IAD
1 stop24h 10m
Qatar Airways
Sun 25/1020:05
IAD
-
BKK
1 stop23h 10m
Qatar Airways
Deal found 5/5฿36,262
Mon 7/920:00
BKK
-
IAD
1 stop23h 45m
Qatar Airways
Sun 13/921:00
IAD
-
BKK
1 stop22h 20m
Qatar Airways
Deal found 6/5฿36,390
Sun 5/715:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sat 11/718:50
IAD
-
BKK
1 stop42h 15m
ซาอุเดียแอร์ไลน์
Deal found 4/5฿36,616
Mon 6/715:20
BKK
-
IAD
1 stop35h 20m
Multiple Airlines
Tue 13/1015:10
IAD
-
BKK
1 stop33h 40m
Multiple Airlines
Deal found 8/5฿36,712
Sun 14/615:25
BKK
-
IAD
1 stop35h 20m
Multiple Airlines
Tue 4/815:10
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 6/5฿36,938
Thu 17/912:10
DMK
-
IAD
1 stop31h 30m
Emirates
Mon 21/910:55
IAD
-
DMK
1 stop37h 15m
Emirates
Deal found 5/5฿48,016

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 8 May 2026.

Return from

฿35,843

One-way from

฿19,870

Popular in

April

Cheapest in

October

Average price

฿41,382
United Airlines
  • United Airlines
  • 7/9-13/9
  • 6 total stops
  • 64h 37m total
  • Bangkok to Washington, D.C.
Search Deals
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 6/7
  • 1 total stop
  • 24h 50m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (฿7,913 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 May 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 8 May 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

Fri 9/10

09:35-07:35

2 stops33h 00m

Washington, D.C. Dulles Intl

Mon 2/11

12:20-05:10

1 stop28h 50m

฿37,936

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 21/7

09:35-14:12

2 stops39h 37m

Washington, D.C. Dulles Intl

Sat 1/8

22:20-09:35

2 stops48h 15m

฿39,353

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 15/6

15:45-07:30

2 stops26h 45m

Washington, D.C. Dulles Intl

Tue 4/8

22:20-09:35

2 stops48h 15m

฿39,546

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 5/9

15:45-11:47

3 stops31h 02m

Washington, D.C. Dulles Intl

Sat 19/9

17:41-09:35

3 stops28h 54m

฿39,643

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 28/7

03:00-15:40

1 stop23h 40m

Washington, D.C. Dulles Intl

Thu 27/8

21:00-13:25

1 stop29h 25m

฿39,675
Fastest return journey

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 17/6

20:00-08:45

1 stop23h 45m

Washington, D.C. Dulles Intl

Tue 30/6

21:00-06:20

1 stop22h 20m

฿39,836

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 1/6

19:00-18:20

1 stop34h 20m

Washington, D.C. Dulles Intl

Mon 29/6

21:00-07:15

1 stop23h 15m

฿41,414

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 15/6

15:45-09:24

3 stops28h 39m

Washington, D.C. Dulles Intl

Sun 2/8

20:00-09:35

2 stops26h 35m

฿42,058

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 13/7

01:30-19:30

1 stop29h 00m

Washington, D.C. Dulles Intl

Tue 22/12

22:00-18:05

1 stop32h 05m

฿44,345

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 24/7

09:35-14:12

2 stops39h 37m

Washington, D.C. Dulles Intl

Sat 1/8

10:13-09:35

3 stops36h 22m

฿46,309

Flights are sorted by cheapest return flights first.

Deals found on 3/5

Showing 1-10 of 36 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?

To ensure you get the cheapest price possible for a flight to Dulles Intl, you should look to book at least 35 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 26 hours 50 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 ฿31,131
ANA
ANA
From ฿34,120
Korean Air
Korean Air
From ฿32,566
เอทิฮัดแอร์เวย์
เอทิฮัดแอร์เวย์
From ฿32,124

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 8 May 2026.
Get a feel of what it's like to fly with Korean Air,ANA, andUnited Airlines 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
1,217 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Crew

8.7

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
1,217 reviews
Korean Air
8.4
Very Good
1,217 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Crew

8.7

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!!
ANA
8.3
Very Good
1,207 reviews
Korean Air
8.4
Very Good
1,217 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Crew

8.7

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
9,694 reviews
Korean Air
8.4
Very Good
1,217 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Crew

8.7

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
1,434 reviews
Korean Air
8.4
Very Good
1,217 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Crew

8.7

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 45 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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