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Thailand (ภาษาไทย)
ภาษาไทย

฿20,434+ 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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
5 Jan — 12 Jan1
1 adult
1 adult, Economy, 0 bags

Flights to Dulles Intl in 2025

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 December 2025.

Thu 25/1201:30BKK - IAD
1 stop29h 00mAir China
Fri 2/122:00IAD - BKK
1 stop35h 30mAir China
Deal found 3/12฿29,775
Thu 11/1201:30BKK - IAD
1 stop29h 00mMultiple Airlines
Sat 3/114:35IAD - BKK
1 stop20h 50mMultiple Airlines
Deal found 5/12฿33,951
Sat 20/1215:30BKK - IAD
2 stops39h 50mIndiGo
Wed 14/113:30IAD - BKK
2 stops43h 35mIndiGo
Deal found 4/12฿35,417
Fri 19/1202:00BKK - IAD
1 stop25h 55mMultiple Airlines
Wed 14/120:05IAD - BKK
1 stop29h 00mMultiple Airlines
Deal found 5/12฿35,672
Fri 19/1203:00BKK - IAD
1 stop24h 55mQatar Airways
Wed 14/120:05IAD - BKK
1 stop28h 10mQatar Airways
Deal found 4/12฿35,704
Wed 24/1216:55BKK - IAD
3 stops30h 53mUnited Airlines
Sun 4/118:01IAD - BKK
2 stops47h 09mUnited Airlines
Deal found 6/12฿35,832
Mon 22/1208:55BKK - IAD
1 stop36h 10mเอทิฮัดแอร์เวย์
Fri 2/114:35IAD - BKK
1 stop40h 10mเอทิฮัดแอร์เวย์
Deal found 4/12฿37,553
Thu 11/1202:55BKK - IAD
1 stop24h 35mเอทิฮัดแอร์เวย์
Sat 3/114:35IAD - BKK
1 stop20h 50mเอทิฮัดแอร์เวย์
Deal found 6/12฿39,657
Sat 20/1215:30BKK - IAD
2 stops39h 50mIndiGo
Mon 5/113:30IAD - BKK
2 stops43h 35mIndiGo
Deal found 4/12฿39,912
Sun 21/1209:25BKK - IAD
1 stop35h 40mเอทิฮัดแอร์เวย์
Fri 2/114:35IAD - BKK
1 stop40h 10mเอทิฮัดแอร์เวย์
Deal found 4/12฿40,359
Wed 24/1218:40DMK - IAD
2 stops32h 05mMultiple Airlines
Sun 4/114:35IAD - DMK
3 stops34h 15mMultiple Airlines
Deal found 6/12฿43,355
Fri 26/1216:30DMK - IAD
2 stops28h 35mMultiple Airlines
Fri 2/110:40IAD - DMK
2 stops24h 50mMultiple Airlines
Deal found 3/12฿63,726

Find flight deals to Dulles Intl Airport

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 6 December 2025.

Return from

฿29,775

One-way from

฿20,434

Popular in

August

Cheapest in

October

Average price

฿43,419
Air China
  • Air China
  • 25/12-2/1
  • 2 total stops
  • 64h 30m total
  • Bangkok to Washington, D.C.
Search Deals
15/12
  • 15/12
  • 3 total stops
  • 33h 10m total
  • Bangkok to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (฿1,837 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿924 potential savings vs. average return price).
Search Deals
Average for return flights in December 2025
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 December 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 10/4

10:50-15:05

2 stops39h 15m

Washington, D.C. Dulles Intl

Fri 24/4

16:30-09:45

2 stops30h 15m

฿33,281

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 6/5

23:30-11:15

1 stop22h 45m

Washington, D.C. Dulles Intl

Wed 13/5

13:15-01:05

1 stop24h 50m

฿33,377

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 5/3

09:40-09:50

1 stop36h 10m

Washington, D.C. Dulles Intl

Wed 15/4

13:15-23:40

1 stop23h 25m

฿33,377

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 3/4

09:50-23:49

2 stops24h 59m

Washington, D.C. Dulles Intl

Sat 18/4

15:00-13:15

2 stops35h 15m

฿33,536

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 4/3

02:05-00:24

2 stops34h 19m

Washington, D.C. Dulles Intl

Wed 15/4

07:15-21:45

2 stops27h 30m

฿33,664

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 13/2

16:55-11:49

3 stops30h 54m

Washington, D.C. Dulles Intl

Sat 21/2

19:13-05:10

2 stops45h 57m

฿33,823

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 5/3

17:15-05:40

2 stops24h 25m

Washington, D.C. Dulles Intl

Wed 15/4

19:01-10:55

2 stops28h 54m

฿34,270

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 18/1

07:10-19:35

2 stops24h 25m

Washington, D.C. Dulles Intl

Sun 25/1

22:28-05:10

2 stops42h 42m

฿35,035

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 1/3

23:15-23:10

2 stops35h 55m

Washington, D.C. Dulles Intl

Thu 14/5

19:59-21:45

2 stops38h 46m

฿36,692

BangkokWashington, D.C.

DMK - IAD

DMKIAD

Bangkok Don Mueang Intl

Fri 13/2

21:10-15:55

2 stops30h 45m

Washington, D.C. Dulles Intl

Sat 21/2

14:35-04:25

2 stops25h 50m

฿38,159

Flights are sorted by cheapest return flights first.

Deals found on 3/12

Showing 1-10 of 35 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 28 November 2025.

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 55 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 ฿30,940
ANA
ANA
From ฿33,776
Korean Air
Korean Air
From ฿32,237
Qatar Airways
Qatar Airways
From ฿39,175

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 December 2025.
Get a feel of what it's like to fly with ANA, Korean Air, andEmirates 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.
ANA
8.4
Very Good
1,017 reviews
Check prices

Boarding

8.6

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

Mario,Nov 2025

HND - BKK

Option to use Bluetooth headphones when connecting to in flight entertainment system. I want to use my own headsets with noise cancelling support
ANA
8.4
Very Good
1,017 reviews
ANA
8.4
Very Good
1,017 reviews
Check prices

Boarding

8.6

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

Mario,Nov 2025

HND - BKK

Option to use Bluetooth headphones when connecting to in flight entertainment system. I want to use my own headsets with noise cancelling support
Korean Air
8.4
Very Good
1,180 reviews
ANA
8.4
Very Good
1,017 reviews
Check prices

Boarding

8.6

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

Mario,Nov 2025

HND - BKK

Option to use Bluetooth headphones when connecting to in flight entertainment system. I want to use my own headsets with noise cancelling support
Emirates
8.1
Very Good
3,430 reviews
ANA
8.4
Very Good
1,017 reviews
Check prices

Boarding

8.6

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

Mario,Nov 2025

HND - BKK

Option to use Bluetooth headphones when connecting to in flight entertainment system. I want to use my own headsets with noise cancelling support
Qatar Airways
7.4
Good
3,676 reviews
ANA
8.4
Very Good
1,017 reviews
Check prices

Boarding

8.6

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

Mario,Nov 2025

HND - BKK

Option to use Bluetooth headphones when connecting to in flight entertainment system. I want to use my own headsets with noise cancelling support
United Airlines
7.4
Good
9,066 reviews
ANA
8.4
Very Good
1,017 reviews
Check prices

Boarding

8.6

Crew

8.7

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

Mario,Nov 2025

HND - BKK

Option to use Bluetooth headphones when connecting to in flight entertainment system. I want to use my own headsets with noise cancelling support

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 16 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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Why should you use Cheapflights to find cheap flight tickets to Dulles Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Dulles Intl.

Can Cheapflights find flights to Dulles Intl with no change fees?

Need flexible booking options for your flight to Dulles Intl ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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