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Cheap flights from Washington, D.C. Dulles Intl Airport to Ottawa from C$ 124

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 1/2. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YOW
26 Jan — 2 Feb1
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 27 December 2025.

Mon 29/123:50 p.m.IAD - YOW
2 stops25h 23mMultiple Airlines
Thu 1/18:55 p.m.YOW - IAD
1 stop13h 24mMultiple Airlines
Deal found 26/12C$ 1,029
Sat 27/1210:15 p.m.IAD - YOW
1 stop18h 58mMultiple Airlines
Wed 31/124:20 p.m.YOW - IAD
2 stops19h 18mMultiple Airlines
Deal found 25/12C$ 1,065
Sat 27/1211:40 a.m.IAD - YOW
1 stop5h 49mPorter Airlines
Wed 31/123:40 p.m.YOW - IAD
1 stop25h 34mPorter Airlines
Deal found 25/12C$ 1,457
Sat 27/126:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Fri 2/112:10 p.m.YOW - IAD
1 stop22h 09mPorter Airlines
Deal found 26/12C$ 1,690
Mon 29/125:10 p.m.IAD - YOW
Nonstop1h 42mUnited Airlines
Thu 1/12:15 p.m.YOW - IAD
Nonstop1h 58mUnited Airlines
Deal found 26/12C$ 1,714
Mon 29/1210:08 p.m.IAD - YOW
Nonstop1h 46mAir Canada
Thu 1/110:50 a.m.YOW - IAD
1 stop5h 34mAir Canada
Deal found 26/12C$ 1,727
Sat 27/1212:43 p.m.IAD - YOW
Nonstop1h 44mAir Canada
Wed 31/129:45 a.m.YOW - IAD
Nonstop2h 02mAir Canada
Deal found 25/12C$ 1,844
Sat 27/126:00 a.m.IAD - YOW
2 stops18h 42mWestJet
Wed 31/125:40 a.m.YOW - IAD
2 stops11h 58mWestJet
Deal found 25/12C$ 1,859
Mon 29/124:29 p.m.IAD - YOW
3 stops24h 22mAmerican Airlines
Thu 1/19:15 a.m.YOW - IAD
3 stops28h 12mAmerican Airlines
Deal found 26/12C$ 1,881

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 27 December 2025.

Round-trip from

C$ 331

One-way from

C$ 124

Popular in

May

Cheapest in

April

Average price

C$ 576

Good one-way deal

C$ 223 or less
Porter Airlines
  • Porter Airlines
  • 8/2-15/2
  • 2 total stops
  • 8h 28m total
  • Washington, D.C. to Ottawa
Search Deals
1/2
  • 1/2
  • 1 total stop
  • 27h 45m total
  • Washington, D.C. to Ottawa
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Ottawa.
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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 27 December 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

Sun 8/2

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

1 stop3h 24m

Ottawa

Sun 15/2

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

1 stop5h 04m

C$ 331

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 9/4

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

1 stop5h 49m

Ottawa

Sun 12/4

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

1 stop3h 54m

C$ 334

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 18/1

8:49 a.m.-5:13 p.m.

1 stop8h 24m

Ottawa

Wed 21/1

3:55 p.m.-4:28 p.m.

2 stops24h 33m

C$ 402

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 18/1

9:45 a.m.-2:03 p.m.

1 stop4h 18m

Ottawa

Wed 21/1

10:20 a.m.-3:46 p.m.

1 stop5h 26m

C$ 417

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 9/1

11:35 a.m.-3:04 p.m.

1 stop3h 29m

Ottawa

Sun 11/1

4:20 p.m.-2:18 p.m.

2 stops21h 58m

C$ 440

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 30/1

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

Nonstop1h 44m

Ottawa

Sun 1/2

7:27 p.m.-9:25 p.m.

Nonstop1h 58m

C$ 492

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 9/2

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

Nonstop1h 44m

Ottawa

Wed 11/2

2:15 p.m.-4:13 p.m.

Nonstop1h 58m

C$ 492

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 24/1

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

Nonstop1h 44m

Ottawa

Sun 25/1

7:27 p.m.-9:25 p.m.

Nonstop1h 58m

C$ 492

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 19/2

10:13 p.m.-11:54 p.m.

Nonstop1h 41m

Ottawa

Mon 23/2

9:45 a.m.-11:44 a.m.

Nonstop1h 59m

C$ 492

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 9/4

10:07 p.m.-11:54 p.m.

Nonstop1h 47m

Ottawa

Sun 12/4

6:00 a.m.-7:50 a.m.

Nonstop1h 50m

C$ 492

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/12

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, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ottawa (average of C$ 153). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in August is currently the most expensive (average of C$ 349). 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 27 December 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 and Air Canada can get you from Washington, D.C. Dulles Intl Airport to Ottawa in just under 3h 24m. Your travel time can differ by up to 58m. 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 (85%), United Airlines (74%) or Air Canada (72%) 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$ 421 for a flight from Washington, D.C. Dulles Intl Airport to Ottawa. The cheapest flight overall is C$ 222 while the most popular route, (Washington, D.C. Dulles Intl - Ottawa) is currently priced at C$ 331.

  • 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, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ottawa (average of C$ 153). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in August is currently the most expensive (average of C$ 349). 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
Pembroke
Wakefield

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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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