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Cheap flights from Washington, D.C. Dulles Intl Airport to Ottawa from C$ 184

IAD — YOW
8 Oct — 15 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

Thu 1/103:50 p.m. -
1 stop8h 30m
Mon 5/107:15 a.m. -
1 stop12h 54m
Deal found 3/9C$ 448
Fri 25/93:50 p.m. -
1 stop21h 02m
Mon 28/96:55 a.m. -
1 stop8h 15m
Deal found 3/9C$ 452
Thu 1/103:50 p.m. -
1 stop5h 52m
Thu 8/1010:40 a.m. -
1 stop4h 30m
Deal found 3/9C$ 464
Fri 2/103:50 p.m. -
1 stop5h 52m
Fri 9/1010:40 a.m. -
1 stop4h 30m
Deal found 4/9C$ 466
Mon 28/911:25 a.m. -
1 stop6h 27m
Mon 5/1010:40 a.m. -
1 stop4h 30m
Deal found 5/9C$ 467
Sun 18/103:50 p.m. -
1 stop8h 30m
Sat 24/106:25 p.m. -
1 stop16h 13m
Deal found 3/9C$ 469
Sat 26/911:25 a.m. -
1 stop7h 42m
Sun 27/96:25 p.m. -
1 stop16h 20m
Deal found 5/9C$ 473
Thu 5/1111:20 a.m. -
1 stop13h 24m
Sun 8/115:30 a.m. -
1 stop12h 13m
Deal found 3/9C$ 475
Thu 15/103:50 p.m. -
1 stop5h 52m
Sat 17/102:35 p.m. -
1 stop4h 25m
Deal found 7/9C$ 480
Thu 12/1111:20 a.m. -
1 stop13h 24m
Mon 16/115:30 a.m. -
1 stop12h 13m
Deal found 3/9C$ 482
Thu 12/1111:20 a.m. -
1 stop4h 49m
Sun 15/1112:15 p.m. -
1 stop5h 28m
Deal found 4/9C$ 484

Find flight deals from Dulles Intl to Ottawa

Round-trip from

C$ 448

One-way from

C$ 184

Popular in

February

Cheapest in

December

Average price

C$ 885

Good round-trip deal

C$ 1,566 or less
1/10-5/10
  • 1/10-5/10
  • 2 total stops
  • 21h 24m total
  • Washington, D.C. to Ottawa
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Porter Airlines
  • Porter Airlines
  • 25/9-31/12
  • 1 total stop
  • 21h 02m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 43 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 25/9

3:50 p.m.-12:52 p.m.

1 stop21h 02m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 184

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Wed 14/10

5:20 p.m.-12:49 p.m.

1 stop19h 29m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 191

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Fri 2/10

3:50 p.m.-8:02 p.m.

1 stop4h 12m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 199

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Sun 15/11

11:20 a.m.-12:44 a.m.

1 stop13h 24m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 205

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.-8:02 p.m.

1 stop4h 12m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 207

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Mon 19/10

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$ 216

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Fri 25/9

6:36 p.m.-2:33 p.m.

2 stops19h 57m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 274

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Wed 14/10

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$ 303
Quickest round-trip

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Tue 13/10

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$ 303

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Fri 2/10

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$ 314

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Showing 1-10 of 21 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$ 495). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in February is currently the most expensive (average of C$ 1,044). 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$ 605 and C$ 1,096 in October.
The cheapest round-trip price found within the last 5 days was C$ 448 on Multiple Airlines (1 Oct-5 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 8 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 and United Airlines can get you from Washington, D.C. Dulles Intl Airport to Ottawa in just under 4h. Your travel time can differ by up to 12m. 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%), United Airlines (77%) or Republic Airways (77%) 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$ 1,566 for a flight from Washington, D.C. Dulles Intl Airport to Ottawa. The cheapest flight overall is C$ 1,566 while the most popular route, (Washington, D.C. Dulles Intl - Ottawa) is currently priced at C$ 467.

  • 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$ 495). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in February is currently the most expensive (average of C$ 1,044). 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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