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Cheap flights from Ottawa to Washington, D.C. Dulles Intl Airport from C$ 261

YOW — IAD
1 Nov — 8 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to Dulles Intl

Mon 2/1112:15 p.m. -
1 stop5h 28m
Sun 8/1111:20 a.m. -
1 stop4h 49m
Deal found 28/9C$ 451
Fri 4/1212:15 p.m. -
1 stop5h 28m
Sun 6/1211:20 a.m. -
1 stop4h 49m
Deal found 29/9C$ 463
Fri 23/1010:40 a.m. -
1 stop4h 30m
Sun 25/1011:20 a.m. -
1 stop4h 49m
Deal found 29/9C$ 467
Sun 1/1112:15 p.m. -
1 stop5h 28m
Sat 21/1111:20 a.m. -
1 stop4h 49m
Deal found 1/10C$ 468
Fri 20/1112:15 p.m. -
1 stop5h 28m
Sun 22/1111:20 a.m. -
1 stop6h 54m
Deal found 30/9C$ 471
Thu 22/1010:40 a.m. -
1 stop4h 30m
Mon 26/1011:20 a.m. -
1 stop4h 49m
Deal found 28/9C$ 473
Mon 9/1112:15 p.m. -
1 stop5h 28m
Wed 11/1111:20 a.m. -
1 stop4h 49m
Deal found 1/10C$ 476
Wed 18/1110:05 a.m. -
1 stop5h 40m
Mon 30/115:20 p.m. -
1 stop4h 32m
Deal found 1/10C$ 481
Fri 13/1112:15 p.m. -
1 stop5h 28m
Fri 20/1111:20 a.m. -
1 stop4h 49m
Deal found 29/9C$ 483
Wed 2/122:00 p.m. -
1 stop6h 10m
Thu 3/125:20 p.m. -
1 stop4h 32m
Deal found 28/9C$ 506
Wed 21/107:30 p.m. -
Nonstop1h 44m
Sat 24/108:15 a.m. -
Nonstop1h 41m
Deal found 30/9C$ 514

Find flight deals from Ottawa to Dulles Intl

Round-trip from

C$ 451

One-way from

C$ 261

Popular in

September

Cheapest in

January

Average price

C$ 567

Good round-trip deal

C$ 712 or less

Good one-way deal

C$ 408 or less
Porter Airlines
  • Porter Airlines
  • 2/11-8/11
  • 2 total stops
  • 10h 17m total
  • Ottawa to Washington, D.C.
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Porter Airlines
  • Porter Airlines
  • 15/11-31/12
  • 1 total stop
  • 5h 28m total
  • Ottawa to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (C$ 235 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease (C$ 43 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Price to beat on a round-trip flight from Ottawa to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Ottawa to Washington, D.C. Dulles Intl.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Ottawa to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Wed 4/11

7:05 a.m.-8:11 p.m.

1 stop13h 06m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 285

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Fri 30/10

2:00 p.m.-3:53 p.m.

Nonstop1h 53m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 295
Quickest round-trip

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Fri 23/10

6:00 a.m.-7:43 a.m.

Nonstop1h 43m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 295

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Wed 2/12

2:00 p.m.-3:53 p.m.

Nonstop1h 53m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 295

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Fri 13/11

9:45 a.m.-11:48 a.m.

Nonstop2h 03m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 308

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Thu 3/12

9:45 a.m.-11:48 a.m.

Nonstop2h 03m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 308

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Fri 23/10

10:40 a.m.-3:10 p.m.

1 stop4h 30m

Washington, D.C. Dulles Intl

Sun 25/10

11:20 a.m.-4:09 p.m.

1 stop4h 49m

C$ 511

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Wed 2/12

2:00 p.m.-3:53 p.m.

Nonstop1h 53m

Washington, D.C. Dulles Intl

Thu 3/12

1:19 p.m.-3:07 p.m.

Nonstop1h 48m

C$ 515

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Sat 17/10

7:30 p.m.-9:14 p.m.

Nonstop1h 44m

Washington, D.C. Dulles Intl

Sat 7/11

1:19 p.m.-3:07 p.m.

Nonstop1h 48m

C$ 515

OttawaWashington, D.C.

YOW Ottawa - IAD Washington, D.C. Dulles Intl

YOWIAD

Ottawa

Wed 11/11

2:00 p.m.-3:53 p.m.

Nonstop1h 53m

Washington, D.C. Dulles Intl

Sun 15/11

5:20 p.m.-9:52 p.m.

1 stop4h 32m

C$ 540

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/9

Showing 1-10 of 16 resultsSorted by cheapest first
1
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Best time to book a flight from Ottawa to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Ottawa with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Ottawa to Washington, D.C. Dulles Intl Airport

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

Currently, January is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. Dulles Intl Airport (average of C$ 436). Flying from Ottawa to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of C$ 931). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YOW to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ottawa to Washington, D.C. Dulles Intl Airport as you normally would.

How much does it cost to fly round-trip from Ottawa to Washington, D.C. Dulles Intl Airport?

Airfare is typical for this route at the moment.

Ottawa to Washington, D.C. Dulles Intl Airport flights typically cost between C$ 444 and C$ 711 in November.
The cheapest round-trip price found within the last 5 days was C$ 451 on Porter Airlines (2 Nov-8 Nov).

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Porter Airlines,United Airlines, andAir Canada from Ottawa to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
467 reviews
Check prices

Food

7.6

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
Porter Airlines
8.0
Very good
467 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Food

7.6

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
United Airlines
7.4
Good
10,275 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Food

7.6

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
Air Canada
7.1
Good
11,711 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Food

7.6

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Related info for your journey

  • What airport do you fly from for flights from Ottawa to Washington, D.C. Dulles Intl?

    Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from Ottawa; the airport handles an average of 7 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Ottawa airport to Washington, D.C. Dulles Intl. It is only a 10.6 km journey to Ottawa (YOW) from Ottawa’s city centre.

  • How long is the flight from Ottawa to Washington, D.C. Dulles Intl Airport?

    Departing from Ottawa to Washington, D.C. Dulles Intl Airport will take you 1h 53m. There are 723 km between Ottawa and Washington, D.C. Dulles Intl Airport. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ottawa to Washington, D.C. Dulles Intl Airport round-trip?

    According to our current data, Porter Airlines (C$ 325), United Airlines (C$ 370), and Air Canada (C$ 500) offers the cheapest pricing from Ottawa to Washington, D.C. Dulles Intl Airport. These flights start at 46% lower than the current average price 3 months from now.

  • What are the most reliable airlines from Ottawa to Washington, D.C. Dulles Intl Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ottawa to Washington, D.C. Dulles Intl Airport on time: Avianca (92%), Republic Airways (89%), Air Canada (80%).

  • What are the cheapest flights from Ottawa to Washington, D.C. Dulles Intl Airport?

    Looking at all options, your cheapest flight can be booked for C$ 269. While the most popular route (Ottawa - Washington, D.C. Dulles Intl) can be booked for C$ 483 on average, our data indicates C$ 735 when flying from Ottawa to Washington, D.C. Dulles Intl Airport.

  • Can I find deals for flights from Ottawa to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Ottawa to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Dulles Intl.

  • Can I find deals for business class flights from Ottawa to Dulles Intl?

    Yes. Cheapflights offers flight deals from Ottawa to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. Dulles Intl Airport (average of C$ 436). Flying from Ottawa to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of C$ 931). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Winchester
Alexandria
Hanover
Oxon Hill
Gaithersburg
Chantilly
Reston
Herndon
Ellicott City
Arlington
Fredericksburg
Ashburn
Rockville

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Ottawa to Dulles Intl

AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 325AverageC$ 426FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 370AverageC$ 588FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 500AverageC$ 673FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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How does Cheapflights help users find flights from Ottawa to Dulles Intl?

Cheapflights makes it easy to find Ottawa to Dulles Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights helps you find that perfect flight to Dulles Intl from Ottawa 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 Ottawa to Dulles Intl with no change fees?

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

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

Yes! Start tracking prices for Ottawa to Dulles Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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