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฿8,583+ 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 1/9. 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
5 Sep — 12 Sep1
1 adult
1 adult, Economy, 0 bags

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 6 August 2026.

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PDX Portland

IADPDX

Washington, D.C. Dulles Intl

Sat 26/9

17:30-20:10

Nonstop5h 40m

Portland

Fri 2/10

08:25-16:27

Nonstop5h 02m

฿15,145
Fastest return journey

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PDX Portland

IADPDX

Washington, D.C. Dulles Intl

Tue 20/10

17:30-20:10

Nonstop5h 40m

Portland

Tue 27/10

08:30-16:22

Nonstop4h 52m

฿15,808

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PDX Portland

IADPDX

Washington, D.C. Dulles Intl

Thu 10/9

17:33-20:10

Nonstop5h 37m

Portland

Sat 12/9

08:25-16:26

Nonstop5h 01m

฿15,808

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PDX Portland

IADPDX

Washington, D.C. Dulles Intl

Mon 21/9

17:33-20:10

Nonstop5h 37m

Portland

Mon 28/9

08:25-16:27

Nonstop5h 02m

฿15,808

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PDX Portland

IADPDX

Washington, D.C. Dulles Intl

Wed 9/9

17:33-20:10

Nonstop5h 37m

Portland

Sat 12/9

08:25-16:26

Nonstop5h 01m

฿15,808

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PDX Portland

IADPDX

Washington, D.C. Dulles Intl

Mon 21/9

17:33-20:10

Nonstop5h 37m

Portland

Sat 26/9

08:25-16:27

Nonstop5h 02m

฿15,808

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PDX Portland

IADPDX

Washington, D.C. Dulles Intl

Mon 28/9

17:30-20:10

Nonstop5h 40m

Portland

Fri 2/10

08:25-16:27

Nonstop5h 02m

฿17,134

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PDX Portland

IADPDX

Washington, D.C. Dulles Intl

Wed 26/8

17:33-20:10

Nonstop5h 37m

Portland

Sun 30/8

08:25-16:26

Nonstop5h 01m

฿17,830

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PDX Portland

IADPDX

Washington, D.C. Dulles Intl

Wed 2/9

17:33-20:10

Nonstop5h 37m

Portland

Sat 5/9

08:25-16:26

Nonstop5h 01m

฿18,791

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PDX Portland

IADPDX

Washington, D.C. Dulles Intl

Tue 15/9

17:33-20:10

Nonstop5h 37m

Portland

Tue 29/9

08:25-16:27

Nonstop5h 02m

฿18,791

Flights are sorted by cheapest return flights first.

Deals found on 5/8

Showing 1-10 of 23 resultsSorted by cheapest first
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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.

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 Korean Air and เตอร์กิชแอร์ไลน์ 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
1,222 reviews
Check prices

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Walter,Jul 2026

LAX - BKK

It was all good! The crew was amazing and attentive seats were comfortable and we got to our destination right on time! A great experience overall!
Korean Air
8.4
Very Good
1,222 reviews
Korean Air
8.4
Very Good
1,222 reviews
Check prices

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Walter,Jul 2026

LAX - BKK

It was all good! The crew was amazing and attentive seats were comfortable and we got to our destination right on time! A great experience overall!
เตอร์กิชแอร์ไลน์
7.4
Good
4,468 reviews
Korean Air
8.4
Very Good
1,222 reviews
Check prices

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Walter,Jul 2026

LAX - BKK

It was all good! The crew was amazing and attentive seats were comfortable and we got to our destination right on time! A great experience overall!

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 6 August 2026.

  • 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 Madrid.

  • 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 ฿14,408. If you're looking for a direct round-trip flight from Washington, D.C. Dulles Intl Airport, you can expect to pay around ฿16,464.

  • 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, January is worth consideration as prices are at their lowest, on average. In terms of the number of daily non-stop flights, January offers travelers the most options.

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