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Cheap flights from Washington, D.C. Dulles Intl Airport to Ottawa from C$ 182

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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YOW
19 May — 26 May1
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
Explore the most affordable flight options available from Dulles Intl to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 April 2026.

Sun 31/55:30 p.m.
IAD
-
YOW
1 stop21h 45m
Multiple Airlines
Thu 4/67:00 a.m.
YOW
-
IAD
2 stops11h 42m
Multiple Airlines
Deal found 18/4C$ 441
Fri 5/66:22 p.m.
IAD
-
YOW
1 stop20h 53m
Multiple Airlines
Mon 8/611:00 a.m.
YOW
-
IAD
1 stop4h 21m
Multiple Airlines
Deal found 17/4C$ 449
Mon 25/54:05 p.m.
IAD
-
YOW
1 stop3h 59m
Porter Airlines
Wed 27/511:00 a.m.
YOW
-
IAD
1 stop4h 21m
Porter Airlines
Deal found 15/4C$ 467
Mon 25/54:05 p.m.
IAD
-
YOW
1 stop3h 59m
Porter Airlines
Thu 28/511:00 a.m.
YOW
-
IAD
1 stop4h 21m
Porter Airlines
Deal found 19/4C$ 468
Sun 24/54:05 p.m.
IAD
-
YOW
1 stop5h 39m
Porter Airlines
Wed 27/511:00 a.m.
YOW
-
IAD
1 stop4h 21m
Porter Airlines
Deal found 14/4C$ 471
Fri 8/54:05 p.m.
IAD
-
YOW
1 stop3h 59m
Porter Airlines
Mon 11/511:00 a.m.
YOW
-
IAD
1 stop4h 21m
Porter Airlines
Deal found 16/4C$ 472
Wed 6/54:05 p.m.
IAD
-
YOW
1 stop3h 59m
Porter Airlines
Thu 7/511:00 a.m.
YOW
-
IAD
1 stop4h 21m
Porter Airlines
Deal found 14/4C$ 478
Wed 13/54:05 p.m.
IAD
-
YOW
1 stop3h 59m
Porter Airlines
Wed 20/511:00 a.m.
YOW
-
IAD
1 stop4h 21m
Porter Airlines
Deal found 15/4C$ 482
Mon 25/511:30 a.m.
IAD
-
YOW
1 stop6h 24m
Multiple Airlines
Wed 27/57:00 a.m.
YOW
-
IAD
2 stops11h 42m
Multiple Airlines
Deal found 15/4C$ 487

Find flight deals from Dulles Intl to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 19 April 2026.

Round-trip from

C$ 441

One-way from

C$ 182

Popular in

February

Cheapest in

December

Average price

C$ 717
31/5-4/6
  • 31/5-4/6
  • 3 total stops
  • 33h 27m total
  • Washington, D.C. to Ottawa
Search Deals
10/7
  • 10/7
  • 2 total stops
  • 29h 58m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 19 April 2026.
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 - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 24/7

3:30 p.m.-9:35 p.m.

1 stop6h 05m

Ottawa

Mon 27/7

7:30 p.m.-9:13 p.m.

Nonstop1h 43m

C$ 600

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 24/7

4:00 p.m.-9:44 p.m.

1 stop5h 44m

Ottawa

Mon 27/7

11:00 a.m.-3:16 p.m.

1 stop4h 16m

C$ 601

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 22/6

5:42 p.m.-10:05 p.m.

1 stop4h 23m

Ottawa

Fri 26/6

6:00 a.m.-7:44 a.m.

Nonstop1h 44m

C$ 613

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 24/5

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

Nonstop1h 44m

Ottawa

Wed 27/5

6:00 a.m.-7:44 a.m.

Nonstop1h 44m

C$ 613

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 23/5

10:15 p.m.-1:59 p.m.

1 stop15h 44m

Ottawa

Thu 28/5

6:00 a.m.-7:44 a.m.

Nonstop1h 44m

C$ 626

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 25/5

12:35 p.m.-4:38 p.m.

1 stop4h 03m

Ottawa

Wed 27/5

10:00 a.m.-11:43 a.m.

Nonstop1h 43m

C$ 626

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 25/5

6:10 a.m.-1:59 p.m.

1 stop7h 49m

Ottawa

Thu 28/5

6:00 a.m.-7:44 a.m.

Nonstop1h 44m

C$ 626

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 27/5

6:10 a.m.-5:07 p.m.

1 stop10h 57m

Ottawa

Thu 28/5

6:00 a.m.-7:44 a.m.

Nonstop1h 44m

C$ 626

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 6/5

12:38 p.m.-2:22 p.m.

Nonstop1h 44m

Ottawa

Thu 7/5

2:40 p.m.-4:30 p.m.

Nonstop1h 50m

C$ 628

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 21/5

8:18 a.m.-10:03 a.m.

Nonstop1h 45m

Ottawa

Sun 24/5

6:25 a.m.-7:02 p.m.

1 stop12h 37m

C$ 634

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/4

Showing 1-10 of 24 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
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.

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$ 490). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in February is currently the most expensive (average of C$ 960). 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?

Find hourly flight availability from Dulles Intl to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 April 2026.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Ottawa at noon. Doing so could potentially save you 85% 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?

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 and Porter Airlines can get you from Washington, D.C. Dulles Intl Airport to Ottawa in just under 5h 44m. Your travel time can differ by up to 21m. 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 Republic Airways (88%), Air Canada (77%) or United Airlines (73%) as they are the most reliable in getting you off to your destination on time.

  • 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$ 490). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in February is currently the most expensive (average of C$ 960). 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
Brockville
Perth
Wakefield
Pembroke
Smiths Falls

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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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