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Cheap flights from Washington, D.C. Dulles Intl Airport to Ottawa from C$ 204

IAD — YOW
22 Oct — 29 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to Ottawa

Enter your travel dates to find the best prices.

Cheapest flights from Dulles Intl to Ottawa

Tue 13/105:20 p.m. -
1 stop15h 57m
Wed 14/102:50 p.m. -
1 stop4h 10m
Deal found 22/9C$ 398
Tue 3/116:07 p.m. -
1 stop23h 13m
Tue 10/117:05 a.m. -
1 stop13h 06m
Deal found 18/9C$ 414
Sat 31/1011:20 a.m. -
1 stop4h 49m
Mon 2/1112:15 p.m. -
1 stop5h 28m
Deal found 19/9C$ 461
Tue 20/1011:25 a.m. -
1 stop24h 02m
Tue 27/107:05 a.m. -
1 stop13h 06m
Deal found 22/9C$ 468
Thu 29/1011:20 a.m. -
1 stop4h 49m
Mon 2/1112:15 p.m. -
1 stop5h 28m
Deal found 18/9C$ 480
Wed 4/1111:20 a.m. -
1 stop25h 54m
Wed 11/117:05 a.m. -
1 stop13h 06m
Deal found 20/9C$ 490
Thu 15/103:50 p.m. -
1 stop4h 12m
Mon 19/107:15 a.m. -
2 stops33h 58m
Deal found 22/9C$ 496
Mon 2/1111:20 a.m. -
1 stop6h 54m
Mon 9/1112:15 p.m. -
1 stop5h 28m
Deal found 21/9C$ 497
Fri 16/1011:25 a.m. -
1 stop6h 27m
Mon 19/107:15 a.m. -
2 stops33h 58m
Deal found 22/9C$ 499
Sun 22/115:20 p.m. -
1 stop4h 32m
Wed 25/1110:05 a.m. -
1 stop5h 40m
Deal found 20/9C$ 503

Find flight deals from Dulles Intl to Ottawa

Round-trip from

C$ 398

One-way from

C$ 204

Popular in

February

Cheapest in

December

Average price

C$ 707

Good round-trip deal

C$ 1,592 or less
Air Canada
  • Air Canada
  • 13/10-14/10
  • 2 total stops
  • 20h 07m total
  • Washington, D.C. to Ottawa
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Porter Airlines
  • Porter Airlines
  • 16/10-31/12
  • 1 total stop
  • 5h 52m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 49 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 45 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Ottawa.
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Fri 16/10

3:50 p.m.-9:42 p.m.

1 stop5h 52m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 204

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Sun 1/11

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

1 stop4h 49m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 216

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Wed 4/11

6:07 p.m.-5:58 p.m.

2 stops23h 51m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 240

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Wed 4/11

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

Nonstop1h 48m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 247

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Sat 3/10

12:35 p.m.-2:17 p.m.

Nonstop1h 42m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 247
Quickest round-trip

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Sun 11/10

8:15 a.m.-9:56 a.m.

Nonstop1h 41m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 247

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Thu 3/12

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

Nonstop1h 48m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 247

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Thu 8/10

12:35 p.m.-2:17 p.m.

Nonstop1h 42m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 247

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Mon 5/10

10:10 p.m.-11:54 p.m.

Nonstop1h 44m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 247

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Sun 1/11

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

Nonstop1h 48m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 256

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/9

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Dulles Intl to Ottawa

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

Cheapflights Insights

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

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

Currently, December is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ottawa (average of C$ 503). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in February is currently the most expensive (average of C$ 1,061). 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 IAD to YOW?

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Ottawa at noon. Doing so could potentially save you 82% on the flight price compared to flying in the morning, which is usually more expensive.

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

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Ottawa flights typically cost between C$ 613 and C$ 963 in October.
The cheapest round-trip price found within the last 5 days was C$ 398 on Air Canada (13 Oct-14 Oct).

Related info for your journey

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

    Most people fly into Ottawa (YOW) if they book a flight to Ottawa from Washington, D.C. Dulles Intl. On average, Ottawa has 9 inbound flights from Washington, D.C. Dulles Intl per day from 0 airlines. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.

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

    Porter Airlines, Air Canada, and United Airlines can get you from Washington, D.C. Dulles Intl Airport to Ottawa in just under 1h 44m. Your travel time can differ by up to 4h 43m. Airlines will cover a distance of 723 km. Both multi-stop and direct flights can be found to your destination and back.

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. Dulles Intl Airport to Ottawa consider choosing GoJet (78%), Air Canada (77%) or United Airlines (75%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay C$ 1,592 for a flight from Washington, D.C. Dulles Intl Airport to Ottawa. The cheapest flight overall is C$ 1,592 while the most popular route, (Washington, D.C. Dulles Intl - Ottawa) is currently priced at C$ 490.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Ottawa 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 Washington, D.C. Dulles Intl Airport to Ottawa?

    Currently, December is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ottawa (average of C$ 503). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in February is currently the most expensive (average of C$ 1,061). 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 Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Prescott
Brockville
Wakefield
Pembroke
Smiths Falls

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When you search for this flight from Dulles Intl to Ottawa, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Dulles Intl to Ottawa flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on Dulles Intl to Ottawa flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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