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฿4,135+ Cheap flights from Washington, D.C. Dulles Intl Airport

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
IAD — BKK
13 Jul — 20 Jul1
1 adult

What to know about flights from Dulles Intl

Discover essential information about flights departing from Dulles Intl, including flight schedules, destinations, airlines operating at the Dulles Intl airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 8 July 2025.

Good round-trip deal

฿8,757 or less

Good one-way deal

฿9,783 or less
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl.
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Find flights from Dulles Intl

Cheapest flights from Dulles Intl
Explore the most affordable flight options available from Dulles Intl. Find the lowest fares based on data from user searches, with prices last updated on 8 July 2025.

Tue 21/1023:00IAD - HKT
1 stop31h 45mAir China
Thu 30/1018:25HKT - IAD
1 stop36h 05mAir China
Deal found 6/7฿26,862
Wed 15/1012:15IAD - CNX
2 stops36h 00mMultiple Airlines
Mon 17/1119:45CNX - IAD
2 stops25h 25mMultiple Airlines
Deal found 8/7฿29,890
Thu 24/712:20IAD - BKK
1 stop29h 15mUnited Airlines
Thu 28/809:35BKK - IAD
2 stops33h 33mUnited Airlines
Deal found 7/7฿30,280
Sun 27/717:23IAD - BKK
2 stops44h 42mKorean Air
Sat 30/802:35BKK - IAD
2 stops31h 46mKorean Air
Deal found 7/7฿30,345
Sun 24/818:50IAD - BKK
2 stops41h 35mเดลต้า
Wed 17/909:50BKK - IAD
2 stops24h 49mเดลต้า
Deal found 6/7฿30,476
Thu 16/1012:15IAD - BKK
1 stop29h 20mANA
Wed 22/1009:35BKK - IAD
2 stops39h 16mANA
Deal found 6/7฿30,541
Mon 20/1019:50IAD - CNX
2 stops39h 05mKorean Air
Tue 28/1000:15CNX - IAD
2 stops34h 02mKorean Air
Deal found 7/7฿30,606
Sun 19/1022:05IAD - BKK
1 stop22h 15mเอทิฮัดแอร์เวย์
Tue 28/1020:50BKK - IAD
1 stop31h 15mเอทิฮัดแอร์เวย์
Deal found 7/7฿30,606
Sun 2/1111:00IAD - HKT
1 stop33h 10mAir India
Sat 8/1118:10HKT - IAD
1 stop24h 40mAir India
Deal found 6/7฿30,606
Sat 18/1021:40IAD - BKK
1 stop30h 45mเตอร์กิชแอร์ไลน์
Fri 31/1005:50BKK - IAD
1 stop25h 25mเตอร์กิชแอร์ไลน์
Deal found 7/7฿30,671
Thu 4/1211:05IAD - HKT
2 stops46h 05mMultiple Airlines
Tue 16/1221:50HKT - IAD
2 stops47h 20mMultiple Airlines
Deal found 7/7฿30,997
Mon 6/1008:30IAD - BKK
2 stops28h 25mMultiple Airlines
Tue 21/1007:00BKK - IAD
2 stops24h 55mMultiple Airlines
Deal found 6/7฿31,648

Find flights from Dulles Intl within your budget

Find flights departing from Dulles Intl that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 8 July 2025. In the last 7 days, Cheapflights users made a total of 17,341 searches

Fly to

Suvarnabhumi

Route

Depart

Return

Price

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Tue 21/10

23:00-17:45

1 stop31h 45m

Phuket City

Thu 30/10

18:25-19:30

1 stop36h 05m

฿26,862

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Wed 15/10

12:15-11:15

2 stops36h 00m

Chiang Mai

Mon 17/11

19:45-09:10

2 stops25h 25m

฿29,890

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 24/7

12:20-04:35

1 stop29h 15m

Bangkok Suvarnabhumi

Thu 28/8

09:35-08:08

2 stops33h 33m

฿30,280

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 27/7

17:23-01:05

2 stops44h 42m

Bangkok Suvarnabhumi

Sun 31/8

09:50-23:21

2 stops24h 31m

฿30,345

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 24/8

18:50-23:25

2 stops41h 35m

Bangkok Suvarnabhumi

Wed 17/9

09:50-23:39

2 stops24h 49m

฿30,476

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 16/10

12:15-04:35

1 stop29h 20m

Bangkok Suvarnabhumi

Wed 22/10

09:35-13:51

2 stops39h 16m

฿30,541

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 19/10

22:05-07:20

1 stop22h 15m

Bangkok Suvarnabhumi

Tue 28/10

20:50-17:05

1 stop31h 15m

฿30,606

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Sun 2/11

11:00-08:10

1 stop33h 10m

Phuket City

Sat 8/11

18:10-06:50

1 stop24h 40m

฿30,606

Washington, D.C.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Mon 20/10

15:00-21:55

2 stops43h 55m

Chiang Mai

Sun 26/10

00:15-23:17

2 stops34h 02m

฿30,606

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 25/8

21:40-05:15

1 stop20h 35m

Bangkok Suvarnabhumi

Thu 30/10

10:10-20:15

1 stop45h 05m

฿30,736

Flights are sorted by cheapest return flights first.

Deals found on 7/7

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Best time to book a flight from Dulles Intl

Have a flexible travel schedule? Discover the best time to fly from 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.

Travel insights for flights from Dulles Intl

Get recent, data-driven insights about flights from Dulles Intl including ideal travel times, pricing trends, and more.

When is the best time to book a flight from Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a return flight from Dulles Intl to Suvarnabhumi. Price data was last updated on 27 June 2025.

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport?

Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport (average of ฿20,447). Flying from Washington, D.C. Dulles Intl Airport in June will prove the most costly (average of ฿36,108). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Washington, D.C. Dulles Intl Airport?

Many airlines operate round-trip flights from Washington, D.C. Dulles Intl Airport: Qatar Airways, เจ็ตบลู, เตอร์กิชแอร์ไลน์. These airlines fly to the following popular destinations: Bangkok.

เอทิฮัดแอร์เวย์
เอทิฮัดแอร์เวย์
From ฿1,030
Qatar Airways
Qatar Airways
From ฿1,105
Emirates
Emirates
From ฿1,161
เจ็ตบลู
เจ็ตบลู
From ฿948

What are popular destinations to fly to from Washington, D.C. Dulles Intl Airport?

If you’re flying from Washington, D.C. Dulles Intl Airport, these routes are more frequently taken by airlines Chicago (370 flights per day), London (356 flights per day) and San Francisco (270 flights per day).

Atlanta Hartsfield-Jackson
Atlanta Hartsfield-Jackson
From ฿778
Mexico City Benito Juarez
Mexico City Benito Juarez
From ฿300
Detroit
Detroit
From ฿246

What is the cheapest place to fly to from Washington, D.C. Dulles Intl Airport?

The cheapest city to fly to from Washington, D.C. Dulles Intl Airport is Detroit, with prices starting at ฿8,008. Explore other affordable destinations below.

Detroit
Detroit
From ฿246
Mexico City Benito Juarez
Mexico City Benito Juarez
From ฿300
Tampa
Tampa
From ฿363

Airline reviews for flights from Dulles Intl

Get insights into the airlines that provide service from 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 airline for your flight from Dulles Intl. In the last 7 days, Cheapflights users made a total of 17,341 searches.
See what other customers who have flown with Korean Air, ANA, andเดลต้า from Washington, D.C. Dulles Intl Airport have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,104 reviews
Check prices

Entertainment

8.2

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very Good
1,104 reviews
Korean Air
8.4
Very Good
1,104 reviews
Check prices

Entertainment

8.2

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
ANA
8.4
Very Good
896 reviews
Korean Air
8.4
Very Good
1,104 reviews
Check prices

Entertainment

8.2

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
เดลต้า
8.0
Very Good
7,962 reviews
Korean Air
8.4
Very Good
1,104 reviews
Check prices

Entertainment

8.2

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Qatar Airways
7.4
Good
3,590 reviews
Korean Air
8.4
Very Good
1,104 reviews
Check prices

Entertainment

8.2

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
เอทิฮัดแอร์เวย์
7.4
Good
1,221 reviews
Korean Air
8.4
Very Good
1,104 reviews
Check prices

Entertainment

8.2

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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Alternate flight departure points to Dulles Intl

Consider leaving from one of these other departure points that are located a short distance from Dulles Intl. Flight origins were last updated on 8 July 2025.
Flights from Reagan-National

Related info for your journey

Access useful and relevant information related to your journey from Dulles Intl. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 8 July 2025.

  • What are the most popular destinations to fly to from Washington, D.C. Dulles Intl Airport?

    The most selected flight destinations from Washington, D.C. Dulles Intl Airport for the current month are Cairo, Athens, Bengaluru. While Mumbai, Cairo, Ahmedabad are the top choices made by travellers year-round.

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to anywhere?

    Users have flown out of Washington, D.C. Dulles Intl Airport for as low as ฿8,008 to Detroit Metropolitan Wayne County Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿29,989 to fly from Washington, D.C. Dulles Intl Airport.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to anywhere?

    According to our data, users have found PLAY, เจ็ตบลู, and เตอร์กิชแอร์ไลน์ to have the cheapest round-trip prices from Washington, D.C. Dulles Intl Airport. Some of the destinations and prices are as follows: PLAY flights from Washington, D.C. Dulles Intl Airport to Reykjavik Keflavik Intl (฿11,494). เจ็ตบลู flights from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi (฿30,852). เตอร์กิชแอร์ไลน์ flights from Washington, D.C. Dulles Intl Airport to Bangkok Suvarnabhumi (฿32,062).

  • What is the cheapest first class flight from Washington, D.C. Dulles Intl Airport?

    If you’re looking to fly first-class from Washington, D.C. Dulles Intl Airport to anywhere, put Seoul on your list as prices start at ฿532,263 for this destination.

  • What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport?

    At the present moment the cheapest month to fly from Washington, D.C. Dulles Intl Airport is currently May; with June being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from Washington, D.C. Dulles Intl Airport?

    Here are some of the cheapest flight destinations from Washington, D.C. Dulles Intl Airport:
    Fly from Washington, D.C. to Bangkok from ฿26,796

  • How does Cheapflights help users find flights from Dulles Intl?

    Cheapflights helps you search for flights from Dulles Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

    Cheapflights helps you find that perfect flight from Dulles Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

  • Can Cheapflights find flights from Dulles Intl with no change fees?

    Yes! Cheapflights helps users easily find flights from Dulles Intl with no change fees.

  • Can Cheapflights notify me if prices for flights from Dulles Intl become cheaper?

    Yes, Cheapflights offers price alerts on flights from Dulles Intl so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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Cheapflights helps you search for flights from Dulles Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights helps you find that perfect flight from Dulles Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Dulles Intl with no change fees.

Can Cheapflights notify me if prices for flights from Dulles Intl become cheaper?

Yes, Cheapflights offers price alerts on flights from Dulles Intl so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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