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฿5,146+ Direct flights from Washington, D.C. Dulles Intl Airport

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 7/3. 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
24 Dec — 31 Dec1
1 adult
1 adult, Economy, 0 bags

Direct flights from Dulles Intl

Enter your travel dates to find the best prices.

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 24 November 2025.

Wed 20/517:30IAD - PDX
Nonstop5h 55mUnited Airlines
Sun 24/508:15PDX - IAD
Nonstop4h 48mUnited Airlines
Deal found 23/11฿13,075
Sat 7/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Sat 14/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 21/11฿13,204
Fri 6/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Mon 9/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 22/11฿13,495
Fri 20/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Fri 27/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 22/11฿14,110
Wed 25/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Wed 1/408:00PDX - IAD
Nonstop5h 12mUnited Airlines
Deal found 20/11฿14,175
Wed 25/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Sun 29/308:00PDX - IAD
Nonstop5h 12mUnited Airlines
Deal found 22/11฿14,466
Tue 17/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Sat 21/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 22/11฿15,308
Thu 12/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Sun 15/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 21/11฿15,793
Wed 24/1217:50IAD - PDX
Nonstop5h 58mUnited Airlines
Thu 1/122:52PDX - IAD
Nonstop4h 58mUnited Airlines
Deal found 21/11฿15,987
Wed 31/1217:50IAD - PDX
Nonstop5h 58mUnited Airlines
Thu 1/122:52PDX - IAD
Nonstop4h 58mUnited Airlines
Deal found 22/11฿17,379
Sun 21/1217:50IAD - PDX
Nonstop5h 58mUnited Airlines
Thu 25/1222:52PDX - IAD
Nonstop4h 58mUnited Airlines
Deal found 22/11฿17,638

Find direct flights from Dulles Intl within your budget

 
Use the slider to find direct flights from Dulles Intl within your budget. Price data is based on user searches made on Cheapflights. Over the past seven days, Cheapflights users made 17,341 searches. This data was last updated on 24 November 2025.

Fly to

Suvarnabhumi

Route

Depart

Return

Price

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Sat 7/3

17:45-20:40

Nonstop5h 55m

Portland

Sat 14/3

23:10-07:03

Nonstop4h 53m

฿13,204

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Tue 17/3

17:45-20:40

Nonstop5h 55m

Portland

Tue 24/3

23:10-07:03

Nonstop4h 53m

฿13,204

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Fri 6/3

17:45-20:40

Nonstop5h 55m

Portland

Mon 9/3

23:10-07:03

Nonstop4h 53m

฿13,495

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Wed 25/3

17:45-20:40

Nonstop5h 55m

Portland

Wed 1/4

08:00-16:12

Nonstop5h 12m

฿14,175

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Wed 25/3

17:45-20:40

Nonstop5h 55m

Portland

Sun 29/3

08:00-16:12

Nonstop5h 12m

฿14,466

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Wed 20/5

17:30-20:25

Nonstop5h 55m

Portland

Sun 24/5

08:15-16:03

Nonstop4h 48m

฿16,311

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Wed 31/12

17:50-20:48

Nonstop5h 58m

Portland

Thu 1/1

22:52-06:50

Nonstop4h 58m

฿17,379

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Sun 21/12

17:50-20:48

Nonstop5h 58m

Portland

Thu 25/12

22:52-06:50

Nonstop4h 58m

฿17,638

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Sat 7/3

17:45-20:40

Nonstop5h 55m

฿5,146

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Tue 17/3

17:45-20:40

Nonstop5h 55m

฿5,146

Flights are sorted by cheapest return flights first.

Deals found on 22/11

Showing 1-10 of 13 results
1
2

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.

Reviews of airlines flying direct to Dulles Intl

Get insights into the airlines that provide direct flights 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 an airline for your flight from Dulles Intl. Reviews last updated Cheapflights.
See what other customers who have flown with Qatar Airways 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.
Qatar Airways
7.4
Good
3,665 reviews
Check prices

Entertainment

7.4

Crew

7.9

Food

7.3

Comfort

7.4

Boarding

7.5

Overall

7.4

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Qatar Airways
7.4
Good
3,665 reviews
Qatar Airways
7.4
Good
3,665 reviews
Check prices

Entertainment

7.4

Crew

7.9

Food

7.3

Comfort

7.4

Boarding

7.5

Overall

7.4

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable

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 24 November 2025.

  • Where can you fly direct from Washington, D.C. Dulles Intl Airport?

    Currently, the most popular direct flight destination from Washington, D.C. Dulles Intl Airport is Columbus Airport.

  • How much are direct flights from Washington, D.C. Dulles Intl Airport?

    On average, a one-way direct flight from Washington, D.C. Dulles Intl Airport will cost users approximately ฿11,145. If you're looking for a direct round-trip flight from Washington, D.C. Dulles Intl Airport, you can expect to pay around ฿16,309.

  • What is the best time of year to fly direct from Washington, D.C. Dulles Intl Airport?

    If you're seeking the lowest price on a direct flight from Washington, D.C. Dulles Intl Airport, July is worth consideration as prices are at their lowest, on average. In terms of the number of daily non-stop flights, September offers travelers the most options.

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