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Cheap flights from Washington, D.C. Dulles Intl Airport to Ottawa from C$ 167

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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YOW
24 Nov — 1 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 25 October 2025.

Round-trip from

C$ 416

One-way from

C$ 167

Popular in

May

Cheapest in

April

Average price

C$ 671

Good one-way deal

C$ 954 or less
Porter Airlines
  • Porter Airlines
  • 26/1-29/1
  • 2 total stops
  • 11h 45m total
  • Washington, D.C. to Ottawa
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6/2
  • 6/2
  • 1 total stop
  • 8h 21m total
  • Washington, D.C. to Ottawa
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Highest demand for flights based on searches. 3% potential increase in price (C$ 27 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 October 2025
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Ottawa.
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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 25 October 2025.

Thu 20/116:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Sun 23/111:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 24/10C$ 450
Fri 21/1111:40 a.m.IAD - YOW
1 stop3h 24mPorter Airlines
Fri 28/116:50 a.m.YOW - IAD
1 stop3h 34mPorter Airlines
Deal found 24/10C$ 452
Mon 8/1211:40 a.m.IAD - YOW
1 stop5h 49mPorter Airlines
Mon 15/121:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 24/10C$ 454
Fri 28/1111:40 a.m.IAD - YOW
1 stop3h 24mPorter Airlines
Sun 7/121:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 23/10C$ 457
Sun 7/129:21 a.m.IAD - YOW
2 stops39h 04mMultiple Airlines
Sun 14/129:30 a.m.YOW - IAD
1 stop10h 54mMultiple Airlines
Deal found 23/10C$ 461
Sun 7/126:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Sun 14/121:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 23/10C$ 462
Fri 28/1111:40 a.m.IAD - YOW
1 stop3h 24mPorter Airlines
Tue 9/1212:10 p.m.YOW - IAD
1 stop5h 04mPorter Airlines
Deal found 23/10C$ 468
Thu 20/116:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Thu 27/1112:10 p.m.YOW - IAD
1 stop5h 04mPorter Airlines
Deal found 23/10C$ 479
Mon 8/126:30 p.m.IAD - YOW
1 stop3h 59mMultiple Airlines
Mon 15/124:15 p.m.YOW - IAD
2 stops46h 14mMultiple Airlines
Deal found 24/10C$ 488
Wed 24/126:05 a.m.IAD - YOW
2 stops35h 20mMultiple Airlines
Sun 28/121:20 p.m.YOW - IAD
1 stop3h 54mMultiple Airlines
Deal found 24/10C$ 493
Wed 3/1211:40 a.m.IAD - YOW
1 stop5h 49mMultiple Airlines
Mon 8/124:15 p.m.YOW - IAD
2 stops22h 14mMultiple Airlines
Deal found 24/10C$ 502
Fri 28/116:30 p.m.IAD - YOW
1 stop3h 59mMultiple Airlines
Tue 9/124:15 p.m.YOW - IAD
2 stops22h 14mMultiple Airlines
Deal found 23/10C$ 503

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 25 October 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

Tue 16/12

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

1 stop3h 59m

Ottawa

Wed 17/12

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

1 stop3h 34m

C$ 457

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

Mon 8/12

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

1 stop3h 34m

C$ 457

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 17/11

11:40 a.m.-3:04 p.m.

1 stop3h 24m

Ottawa

Wed 19/11

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

1 stop3h 34m

C$ 457

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 16/11

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

1 stop3h 59m

Ottawa

Sat 22/11

8:40 a.m.-12:29 p.m.

1 stop3h 49m

C$ 457

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 3/12

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

1 stop5h 49m

Ottawa

Mon 8/12

4:15 p.m.-2:29 p.m.

2 stops22h 14m

C$ 502

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 5/12

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

1 stop3h 59m

Ottawa

Sun 7/12

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

1 stop3h 54m

C$ 535

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 19/11

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

1 stop5h 49m

Ottawa

Fri 21/11

3:05 p.m.-7:45 a.m.

2 stops16h 40m

C$ 549

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 13/11

6:30 p.m.-7:59 a.m.

1 stop13h 29m

Ottawa

Tue 18/11

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

1 stop5h 04m

C$ 565

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 13/11

8:22 p.m.-10:29 p.m.

3 stops26h 07m

Ottawa

Tue 18/11

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

1 stop5h 04m

C$ 576

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 16/11

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

1 stop3h 59m

Ottawa

Sat 22/11

7:30 p.m.-9:22 p.m.

Nonstop1h 52m

C$ 579

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/10

Showing 1-10 of 21 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$ 158). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in August is currently the most expensive (average of C$ 357). 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 25 October 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 2 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 3h 59m. 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 GoJet (80%), Air Canada (80%) or United Airlines (80%) 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$ 3,456 for a flight from Washington, D.C. Dulles Intl Airport to Ottawa. The cheapest flight overall is C$ 235 while the most popular route, (Washington, D.C. Dulles Intl - Ottawa) is currently priced at C$ 416.

  • 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$ 158). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in August is currently the most expensive (average of C$ 357). 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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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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