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฿22,039+ 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 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
15 Jul — 22 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 10 July 2025.

Return from

฿26,773

One-way from

฿22,039

Popular in

August

Cheapest in

January

Average price

฿37,156
23/8-30/8
  • 23/8-30/8
  • 4 total stops
  • 91h 29m total
  • Bangkok to Washington, D.C.
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15/7
  • 15/7
  • 3 total stops
  • 36h 15m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (฿108,974 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (฿41,087 potential savings vs. average return price).
Search Deals
Average for return flights in July 2025
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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 10 July 2025.

Fri 3/1015:25BKK - IAD
1 stop35h 20mซาอุเดียแอร์ไลน์
Sat 18/1018:50IAD - BKK
1 stop42h 20mซาอุเดียแอร์ไลน์
Deal found 9/7฿32,128
Fri 10/1009:35BKK - IAD
1 stop35h 30mUnited Airlines
Sun 19/1008:20IAD - BKK
2 stops33h 15mUnited Airlines
Deal found 10/7฿33,369
Sun 24/823:40BKK - IAD
2 stops47h 05mIndiGo
Sun 31/813:30IAD - BKK
2 stops46h 10mIndiGo
Deal found 9/7฿34,413
Fri 3/1013:55BKK - IAD
1 stop31h 10mANA
Sat 18/1013:20IAD - BKK
2 stops28h 15mANA
Deal found 9/7฿34,642
Tue 18/1122:50BKK - IAD
2 stops24h 59mMultiple Airlines
Sat 29/1108:45IAD - BKK
2 stops27h 20mMultiple Airlines
Deal found 10/7฿35,066
Tue 16/1201:00BKK - IAD
2 stops34h 34mเดลต้า
Sun 4/107:00IAD - BKK
2 stops28h 20mเดลต้า
Deal found 9/7฿35,556
Fri 10/1020:35DMK - IAD
2 stops30h 35mMultiple Airlines
Sun 19/1022:05IAD - DMK
2 stops43h 20mMultiple Airlines
Deal found 10/7฿35,752
Fri 3/1008:40BKK - IAD
1 stop42h 00mQatar Airways
Sat 18/1021:00IAD - BKK
1 stop29h 25mQatar Airways
Deal found 9/7฿38,136
Mon 21/723:30BKK - IAD
1 stop22h 45mKorean Air
Mon 4/813:30IAD - BKK
1 stop22h 55mKorean Air
Deal found 10/7฿38,560
Sat 19/702:40BKK - IAD
2 stops48h 45mChina Airlines
Mon 18/819:59IAD - BKK
2 stops26h 46mChina Airlines
Deal found 9/7฿38,952

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 10 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

Fri 3/10

15:25-15:45

1 stop35h 20m

Washington, D.C. Dulles Intl

Sat 18/10

18:50-00:10

1 stop42h 20m

฿32,128

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 10/10

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 19/10

08:20-04:35

2 stops33h 15m

฿33,369

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 24/8

23:40-11:45

2 stops47h 05m

Washington, D.C. Dulles Intl

Sun 31/8

13:30-22:40

2 stops46h 10m

฿34,413

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 3/10

13:55-10:05

1 stop31h 10m

Washington, D.C. Dulles Intl

Sat 18/10

13:20-04:35

2 stops28h 15m

฿34,642

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 18/11

22:50-11:49

2 stops24h 59m

Washington, D.C. Dulles Intl

Sat 29/11

08:45-00:05

2 stops27h 20m

฿35,066

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 16/12

01:00-23:34

2 stops34h 34m

Washington, D.C. Dulles Intl

Sun 4/1

07:00-23:20

2 stops28h 20m

฿35,556

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Fri 10/10

20:35-16:10

2 stops30h 35m

Washington, D.C. Dulles Intl

Sun 19/10

22:05-04:25

2 stops43h 20m

฿35,752

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 3/10

08:40-15:40

1 stop42h 00m

Washington, D.C. Dulles Intl

Sat 18/10

21:00-13:25

1 stop29h 25m

฿38,136

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 21/7

23:30-11:15

1 stop22h 45m

Washington, D.C. Dulles Intl

Mon 4/8

13:30-23:25

1 stop22h 55m

฿38,560

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Tue 15/7

10:00-11:15

3 stops36h 15m

฿22,039

Flights are sorted by cheapest return flights first.

Deals found on 8/7

Showing 1-10 of 16 results
1
2

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 27 June 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 33 hours 35 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
Emirates
Emirates
From ฿1,307

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 10 July 2025.
Get a feel of what it's like to fly with Korean Air, ANA, andChina 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
1,105 reviews
Check prices

Boarding

8.5

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

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
1,105 reviews
Korean Air
8.4
Very Good
1,105 reviews
Check prices

Boarding

8.5

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

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
899 reviews
Korean Air
8.4
Very Good
1,105 reviews
Check prices

Boarding

8.5

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

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
8.3
Very Good
744 reviews
Korean Air
8.4
Very Good
1,105 reviews
Check prices

Boarding

8.5

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

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
7,951 reviews
Korean Air
8.4
Very Good
1,105 reviews
Check prices

Boarding

8.5

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

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.
สวิส อินเตอร์เนชั่นแนล แอร์ไลน์
7.5
Good
1,655 reviews
Korean Air
8.4
Very Good
1,105 reviews
Check prices

Boarding

8.5

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Crew

8.7

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 ฿7,209, while return flights cost around ฿16,416.

  • 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, Chiang Mai offers the quickest one-way flight (30 hours 57 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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