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฿5,626+ 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 6/3. 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
18 Jan — 25 Jan1
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 19 December 2025.

Fri 6/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Thu 12/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 17/12฿9,964
Sun 8/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Sat 14/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 16/12฿10,310
Tue 7/417:45IAD - PDX
Nonstop5h 46mUnited Airlines
Fri 17/408:00PDX - IAD
Nonstop5h 12mUnited Airlines
Deal found 16/12฿10,624
Tue 7/417:45IAD - PDX
Nonstop5h 46mUnited Airlines
Sun 12/408:00PDX - IAD
Nonstop5h 12mUnited Airlines
Deal found 17/12฿11,756
Sun 15/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Wed 18/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 18/12฿12,039
Tue 17/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Tue 24/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 17/12฿12,510
Fri 6/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Mon 9/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 17/12฿13,107
Thu 19/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Sat 28/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 16/12฿13,767
Sat 7/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Sat 14/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 19/12฿14,553
Thu 23/417:45IAD - PDX
Nonstop5h 46mUnited Airlines
Sun 26/408:00PDX - IAD
Nonstop5h 12mUnited Airlines
Deal found 18/12฿14,930
Thu 5/317:45IAD - PDX
Nonstop5h 55mUnited Airlines
Mon 9/323:10PDX - IAD
Nonstop4h 53mUnited Airlines
Deal found 18/12฿14,993

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 19 December 2025.

Fly to

Suvarnabhumi

Route

Depart

Return

Price

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Sun 8/3

17:45-20:40

Nonstop5h 55m

Portland

Sat 14/3

23:10-07:03

Nonstop4h 53m

฿10,310

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Fri 1/5

17:55-20:41

Nonstop5h 46m

Portland

Thu 7/5

08:05-16:17

Nonstop5h 12m

฿10,624

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Tue 7/4

17:45-20:31

Nonstop5h 46m

Portland

Fri 17/4

08:00-16:12

Nonstop5h 12m

฿10,624

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Tue 7/4

17:45-20:31

Nonstop5h 46m

Portland

Sun 12/4

08:00-16:12

Nonstop5h 12m

฿11,756

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

฿12,510

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

฿12,510

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

฿13,107

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Sat 21/3

17:45-20:40

Nonstop5h 55m

Portland

Sat 28/3

23:10-07:03

Nonstop4h 53m

฿13,767

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Thu 19/3

17:45-20:40

Nonstop5h 55m

Portland

Sat 28/3

23:10-07:03

Nonstop4h 53m

฿13,767

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

฿13,767

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Showing 1-10 of 18 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 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
1,186 reviews
Check prices

Crew

8.7

Comfort

8.3

Overall

8.4

Boarding

8.5

Entertainment

8.2

Food

8.1

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
1,186 reviews
Korean Air
8.4
Very Good
1,186 reviews
Check prices

Crew

8.7

Comfort

8.3

Overall

8.4

Boarding

8.5

Entertainment

8.2

Food

8.1

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.
เตอร์กิชแอร์ไลน์
7.3
Good
4,103 reviews
Korean Air
8.4
Very Good
1,186 reviews
Check prices

Crew

8.7

Comfort

8.3

Overall

8.4

Boarding

8.5

Entertainment

8.2

Food

8.1

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.

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 19 December 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 Mexico City.

  • 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 ฿10,825. If you're looking for a direct round-trip flight from Washington, D.C. Dulles Intl Airport, you can expect to pay around ฿19,066.

  • 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, June 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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