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฿21,370+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
20 Jul — 27 Jul1
1 adult

Flights to Dulles Intl in 2025

Find the latest flights to Dulles Intl in 2025, 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 15 July 2025.

Return from

฿28,407

One-way from

฿21,370

Popular in

August

Cheapest in

January

Average price

฿38,557
27/8-3/9
  • 27/8-3/9
  • 5 total stops
  • 63h 09m total
  • Bangkok to Washington, D.C.
Search Deals
1/11
  • 1/11
  • 2 total stops
  • 31h 50m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (฿216,509 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (฿60,040 potential savings vs. average return price).
Search Deals
Average for return flights in July 2025
Search Deals

Find flight deals to Dulles Intl Airport

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 15 July 2025.

Sun 7/915:25BKK - IAD
1 stop35h 20mซาอุเดียแอร์ไลน์
Sat 13/918:50IAD - BKK
1 stop42h 20mซาอุเดียแอร์ไลน์
Deal found 13/7฿31,909
Wed 27/809:35BKK - IAD
1 stop41h 10mUnited Airlines
Wed 3/908:20IAD - BKK
2 stops33h 15mUnited Airlines
Deal found 13/7฿33,434
Sun 7/923:40BKK - IAD
2 stops47h 05mMultiple Airlines
Sat 20/922:05IAD - BKK
1 stop21h 25mMultiple Airlines
Deal found 15/7฿34,147
Wed 27/809:50BKK - IAD
1 stop36h 25mKorean Air
Wed 3/913:15IAD - BKK
1 stop24h 50mKorean Air
Deal found 13/7฿34,277
Fri 12/913:55BKK - IAD
1 stop31h 10mANA
Thu 15/108:35IAD - BKK
2 stops27h 30mANA
Deal found 15/7฿34,504
Fri 5/909:50BKK - IAD
2 stops24h 50mเดลต้า
Tue 16/909:50IAD - BKK
2 stops24h 55mเดลต้า
Deal found 13/7฿35,639
Tue 18/1108:15BKK - IAD
2 stops39h 08mแอร์แคนาดา
Sat 29/1109:55IAD - BKK
2 stops32h 35mแอร์แคนาดา
Deal found 15/7฿36,417
Tue 16/923:40BKK - IAD
2 stops31h 05mIndiGo
Fri 21/1121:10IAD - BKK
2 stops35h 55mIndiGo
Deal found 13/7฿36,547
Mon 15/901:30BKK - IAD
1 stop29h 00mAir China
Fri 21/1122:00IAD - BKK
2 stops38h 40mAir China
Deal found 13/7฿36,612
Mon 1/902:30BKK - IAD
1 stop24h 10mQatar Airways
Mon 17/1120:05IAD - BKK
1 stop21h 50mQatar Airways
Deal found 13/7฿37,066
Thu 4/1220:05DMK - IAD
2 stops35h 10mMultiple Airlines
Fri 2/111:00IAD - DMK
2 stops28h 50mMultiple Airlines
Deal found 13/7฿43,389

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 15 July 2025.
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

Sun 7/9

15:25-15:45

1 stop35h 20m

Washington, D.C. Dulles Intl

Sat 13/9

18:50-00:10

1 stop42h 20m

฿31,909

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 27/8

09:35-15:45

1 stop41h 10m

Washington, D.C. Dulles Intl

Wed 3/9

08:20-04:35

2 stops33h 15m

฿33,434

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 7/9

23:40-11:45

2 stops47h 05m

Washington, D.C. Dulles Intl

Sat 20/9

22:05-06:30

1 stop21h 25m

฿34,147

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 27/8

09:50-11:15

1 stop36h 25m

Washington, D.C. Dulles Intl

Wed 3/9

13:15-01:05

1 stop24h 50m

฿34,277

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 12/9

13:55-10:05

1 stop31h 10m

Washington, D.C. Dulles Intl

Thu 15/1

08:35-00:05

2 stops27h 30m

฿34,504

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 5/9

09:50-23:40

2 stops24h 50m

Washington, D.C. Dulles Intl

Tue 16/9

09:50-21:45

2 stops24h 55m

฿35,639

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 18/11

08:15-11:23

2 stops39h 08m

Washington, D.C. Dulles Intl

Sat 29/11

09:55-06:30

2 stops32h 35m

฿36,417

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 16/9

23:40-19:45

2 stops31h 05m

Washington, D.C. Dulles Intl

Fri 21/11

21:10-21:05

2 stops35h 55m

฿36,547

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 15/9

01:30-19:30

1 stop29h 00m

Washington, D.C. Dulles Intl

Fri 21/11

22:00-00:40

2 stops38h 40m

฿36,612

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 1/9

02:30-15:40

1 stop24h 10m

Washington, D.C. Dulles Intl

Mon 17/11

20:05-05:55

1 stop21h 50m

฿37,066

Flights are sorted by cheapest return flights first.

Deals found on 15/7

Showing 1-10 of 24 results
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2
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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 11 July 2025.

To ensure you get the cheapest price possible for a flight to Dulles Intl, you should look to book at least 20 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 29 hours 30 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 Qatar Airways.

United Airlines
United Airlines
From ฿971
ANA
ANA
From ฿1,056
Qatar Airways
Qatar Airways
From ฿1,238
Korean Air
Korean Air
From ฿1,046

What are the cheapest airlines that fly to Dulles Intl?

The cheapest airlines flying from Bangkok to Dulles Intl are ซาอุเดียแอร์ไลน์, United Airlines 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 15 July 2025.
Get a feel of what it's like to fly with Korean Air, ANA, andJapan 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
1,109 reviews
Check prices

Food

8.1

Comfort

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Korean Air
8.4
Very Good
1,109 reviews
Korean Air
8.4
Very Good
1,109 reviews
Check prices

Food

8.1

Comfort

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
ANA
8.4
Very Good
905 reviews
Korean Air
8.4
Very Good
1,109 reviews
Check prices

Food

8.1

Comfort

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Japan Airlines
8.3
Very Good
1,513 reviews
Korean Air
8.4
Very Good
1,109 reviews
Check prices

Food

8.1

Comfort

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
China Airlines
8.2
Very Good
745 reviews
Korean Air
8.4
Very Good
1,109 reviews
Check prices

Food

8.1

Comfort

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
เดลต้า
8.0
Very Good
7,957 reviews
Korean Air
8.4
Very Good
1,109 reviews
Check prices

Food

8.1

Comfort

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

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.

  • What is the cheapest airport to fly to in Dulles Intl?

    Washington, D.C. Dulles Intl is currently the cheapest airport to fly to in Dulles Intl. One-way flights to Washington, D.C. Dulles Intl typically cost ฿7,160, while return flights cost around ฿16,304.

  • How much is a return flight to Dulles Intl?

    A return flight to Dulles Intl will typically cost around ฿503, however they can be found for as little as ฿503.

  • 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 (27 hours 15 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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