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Cheap flights from Washington, D.C. Dulles Intl Airport to Ottawa from C$ 199

IAD — YOW
25 Sep — 2 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

Fri 16/103:50 p.m. -
1 stop5h 52m
Sun 18/1010:40 a.m. -
1 stop4h 30m
Deal found 21/8C$ 431
Thu 15/103:50 p.m. -
1 stop5h 52m
Fri 16/1010:40 a.m. -
1 stop4h 30m
Deal found 24/8C$ 435
Fri 25/93:50 p.m. -
1 stop4h 12m
Fri 2/1010:40 a.m. -
1 stop4h 30m
Deal found 25/8C$ 438
Thu 1/1011:25 a.m. -
1 stop6h 27m
Sun 4/1010:40 a.m. -
1 stop4h 30m
Deal found 25/8C$ 439
Fri 16/103:50 p.m. -
1 stop5h 52m
Mon 19/1010:40 a.m. -
1 stop4h 30m
Deal found 22/8C$ 444
Thu 8/103:50 p.m. -
1 stop5h 52m
Sun 11/1010:40 a.m. -
1 stop4h 30m
Deal found 23/8C$ 450
Fri 25/93:50 p.m. -
1 stop4h 12m
Sun 27/910:40 a.m. -
1 stop4h 30m
Deal found 23/8C$ 454
Fri 2/103:50 p.m. -
1 stop5h 52m
Sun 4/1010:40 a.m. -
1 stop4h 30m
Deal found 23/8C$ 457
Sat 3/1011:25 a.m. -
1 stop7h 42m
Mon 12/1010:40 a.m. -
1 stop4h 30m
Deal found 24/8C$ 464
Tue 24/1111:20 a.m. -
1 stop13h 24m
Sun 29/115:30 a.m. -
1 stop12h 13m
Deal found 25/8C$ 467
Tue 6/1011:25 a.m. -
1 stop6h 27m
Tue 13/1011:15 a.m. -
1 stop3h 45m
Deal found 22/8C$ 479

Find flight deals from Dulles Intl to Ottawa

Round-trip from

C$ 431

One-way from

C$ 199

Popular in

September

Cheapest in

December

Average price

C$ 681

Good round-trip deal

C$ 758 or less
Porter Airlines
  • Porter Airlines
  • 16/10-18/10
  • 2 total stops
  • 10h 22m total
  • Washington, D.C. to Ottawa
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Porter Airlines
  • Porter Airlines
  • 13/9
  • 1 total stop
  • 6h 27m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 89 potential increase over avg. RT price).
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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 August 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

Tue 29/9

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

Nonstop1h 44m

Ottawa

Thu 1/10

2:52 p.m.-4:35 p.m.

Nonstop1h 43m

C$ 594

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Thu 29/10

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

Nonstop1h 48m

Ottawa

Mon 2/11

12:15 p.m.-4:33 p.m.

1 stop4h 18m

C$ 608

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Tue 29/9

11:25 a.m.-5:52 p.m.

1 stop6h 27m

Ottawa

Thu 1/10

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

1 stop4h 30m

C$ 608

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Sat 26/9

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

Nonstop1h 42m

Ottawa

Tue 29/9

2:52 p.m.-4:35 p.m.

Nonstop1h 43m

C$ 608

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Fri 25/9

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

Nonstop1h 44m

Ottawa

Wed 30/9

12:15 p.m.-4:38 p.m.

1 stop4h 23m

C$ 608
Quickest round-trip

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Fri 18/9

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

Nonstop1h 41m

Ottawa

Fri 25/9

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

Nonstop1h 43m

C$ 608

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Fri 9/10

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

Nonstop1h 41m

Ottawa

Sun 11/10

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

Nonstop1h 43m

C$ 608

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Thu 22/10

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

Nonstop1h 42m

Ottawa

Mon 26/10

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

Nonstop1h 53m

C$ 608

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Wed 16/9

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

Nonstop1h 44m

Ottawa

Wed 23/9

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

Nonstop1h 43m

C$ 608

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Fri 9/10

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

Nonstop1h 41m

Ottawa

Sun 11/10

12:15 p.m.-4:41 p.m.

1 stop4h 26m

C$ 616

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/8

Showing 1-10 of 23 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$ 496). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in September is currently the most expensive (average of C$ 1,063). 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 79% on the flight price compared to flying in the afternoon, 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$ 640 and C$ 924 in October.
The cheapest round-trip price found within the last 5 days was C$ 431 on Porter Airlines (16 Oct-18 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?

    United Airlines can get you from Washington, D.C. Dulles Intl Airport to Ottawa in just under 1h 44m. Your travel time will be generally consistent. Airlines will cover a distance of 723 km. Generally, flights for this route are direct.

  • 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 (76%), United Airlines (75%) or Air Canada (74%) 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$ 1,169 for a flight from Washington, D.C. Dulles Intl Airport to Ottawa. The cheapest flight overall is C$ 631 while the most popular route, (Washington, D.C. Dulles Intl - Ottawa) is currently priced at C$ 435.

  • 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$ 496). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in September is currently the most expensive (average of C$ 1,063). 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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