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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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YOW
6 Dec — 13 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 6 November 2025.

Round-trip from

C$ 420

One-way from

C$ 182

Popular in

May

Cheapest in

April

Average price

C$ 484
10/12-14/12
  • 10/12-14/12
  • 3 total stops
  • 43h 07m total
  • Washington, D.C. to Ottawa
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11/1
  • 11/1
  • 1 total stop
  • 8h 25m total
  • Washington, D.C. to Ottawa
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Highest demand for flights based on searches. 2% potential increase in price (C$ 25 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 30 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 6 November 2025.

Wed 10/129:00 a.m.IAD - YOW
2 stops32h 13mMultiple Airlines
Sun 14/129:30 a.m.YOW - IAD
1 stop10h 54mMultiple Airlines
Deal found 6/11C$ 420
Wed 3/1211:40 a.m.IAD - YOW
1 stop5h 49mPorter Airlines
Fri 5/126:50 a.m.YOW - IAD
1 stop3h 34mPorter Airlines
Deal found 6/11C$ 450
Sat 20/1211:40 a.m.IAD - YOW
1 stop5h 49mPorter Airlines
Sun 4/11:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 6/11C$ 457
Fri 28/1111:40 a.m.IAD - YOW
1 stop3h 24mPorter Airlines
Mon 1/121:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 5/11C$ 460
Wed 3/1211:40 a.m.IAD - YOW
1 stop5h 49mPorter Airlines
Wed 10/126:50 a.m.YOW - IAD
1 stop3h 34mPorter Airlines
Deal found 5/11C$ 461
Thu 4/126:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Mon 8/121:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 6/11C$ 463
Thu 4/125:45 a.m.IAD - YOW
2 stops35h 40mMultiple Airlines
Thu 11/1212:10 p.m.YOW - IAD
1 stop5h 04mMultiple Airlines
Deal found 5/11C$ 481
Tue 23/1211:40 a.m.IAD - YOW
1 stop5h 49mPorter Airlines
Mon 29/128:40 a.m.YOW - IAD
1 stop8h 34mPorter Airlines
Deal found 6/11C$ 484
Fri 19/1211:40 a.m.IAD - YOW
1 stop3h 24mPorter Airlines
Mon 22/126:50 a.m.YOW - IAD
1 stop3h 34mPorter Airlines
Deal found 5/11C$ 492
Sun 21/1211:40 a.m.IAD - YOW
1 stop5h 49mPorter Airlines
Sun 28/1212:10 p.m.YOW - IAD
1 stop5h 04mPorter Airlines
Deal found 6/11C$ 494

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 6 November 2025.
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

Dulles Intl

Fly to

Ottawa

Route

Depart

Return

Price

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 26/2

11:40 a.m.-5:29 p.m.

1 stop5h 49m

Ottawa

Sun 1/3

12:10 p.m.-5:14 p.m.

1 stop5h 04m

C$ 480

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 4/12

5:45 a.m.-5:25 p.m.

2 stops35h 40m

Ottawa

Thu 11/12

12:10 p.m.-5:14 p.m.

1 stop5h 04m

C$ 481

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 3/12

6:30 p.m.-10:29 p.m.

1 stop3h 59m

Ottawa

Wed 10/12

6:50 a.m.-10:24 a.m.

1 stop3h 34m

C$ 509

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 26/12

11:40 a.m.-5:29 p.m.

1 stop5h 49m

Ottawa

Sat 3/1

1:20 p.m.-5:14 p.m.

1 stop3h 54m

C$ 523

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 28/11

6:30 p.m.-10:29 p.m.

1 stop3h 59m

Ottawa

Mon 1/12

12:10 p.m.-5:14 p.m.

1 stop5h 04m

C$ 584

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 28/11

6:30 p.m.-10:29 p.m.

1 stop3h 59m

Ottawa

Mon 1/12

7:15 p.m.-2:29 p.m.

2 stops19h 14m

C$ 597

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 3/12

6:30 p.m.-10:29 p.m.

1 stop3h 59m

Ottawa

Wed 10/12

2:17 p.m.-4:11 p.m.

Nonstop1h 54m

C$ 597

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 7/12

11:40 a.m.-5:29 p.m.

1 stop5h 49m

Ottawa

Wed 10/12

4:15 p.m.-11:23 a.m.

3 stops19h 08m

C$ 598

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 18/12

6:30 p.m.-10:29 p.m.

1 stop3h 59m

Ottawa

Mon 29/12

12:10 p.m.-5:14 p.m.

1 stop5h 04m

C$ 612

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 19/12

11:40 a.m.-5:29 p.m.

1 stop5h 49m

Ottawa

Mon 29/12

1:20 p.m.-5:14 p.m.

1 stop3h 54m

C$ 612

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 23 results
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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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ottawa (average of C$ 159). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in August is currently the most expensive (average of C$ 360). 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 6 November 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Ottawa at noon. Doing so could potentially save you 83% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 7 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 can get you from Washington, D.C. Dulles Intl Airport to Ottawa in just under 5h 49m. Your travel time can differ by up to . Airlines will cover a distance of 723 km.

  • 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 (83%), Air Canada (81%) or United Airlines (81%) 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ottawa (average of C$ 159). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in August is currently the most expensive (average of C$ 360). 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
Smiths Falls
Perth
Prescott
Pembroke
Wakefield

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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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