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Cheap flights from Washington, D.C. Dulles Intl Airport to Ottawa from C$ 187

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 25/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YOW
4 Apr — 11 Apr1
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 5 March 2026.

Sat 18/41:45 p.m.
IAD
-
YOW
1 stop3h 44m
Porter Airlines
Sat 25/48:40 a.m.
YOW
-
IAD
1 stop4h 19m
Porter Airlines
Deal found 4/3C$ 390
Sun 12/42:24 p.m.
IAD
-
YOW
1 stop9h 34m
Multiple Airlines
Tue 14/47:00 a.m.
YOW
-
IAD
2 stops17h 36m
Multiple Airlines
Deal found 4/3C$ 403
Mon 27/411:40 a.m.
IAD
-
YOW
1 stop5h 04m
Porter Airlines
Wed 29/46:45 a.m.
YOW
-
IAD
1 stop4h 09m
Porter Airlines
Deal found 1/3C$ 406
Wed 15/411:40 a.m.
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Tue 21/47:00 a.m.
YOW
-
IAD
1 stop3h 54m
Porter Airlines
Deal found 3/3C$ 407
Wed 22/411:40 a.m.
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Sat 25/48:40 a.m.
YOW
-
IAD
1 stop4h 19m
Porter Airlines
Deal found 1/3C$ 409
Sat 18/41:45 p.m.
IAD
-
YOW
1 stop3h 44m
Porter Airlines
Tue 21/47:00 a.m.
YOW
-
IAD
1 stop3h 54m
Porter Airlines
Deal found 1/3C$ 411
Wed 15/411:40 a.m.
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Wed 22/46:45 a.m.
YOW
-
IAD
1 stop4h 09m
Porter Airlines
Deal found 3/3C$ 413
Wed 15/411:40 a.m.
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Sat 25/48:40 a.m.
YOW
-
IAD
1 stop4h 19m
Porter Airlines
Deal found 3/3C$ 418
Thu 16/411:40 a.m.
IAD
-
YOW
1 stop5h 24m
Porter Airlines
Sun 19/412:10 p.m.
YOW
-
IAD
1 stop5h 04m
Porter Airlines
Deal found 5/3C$ 420
Wed 22/411:40 a.m.
IAD
-
YOW
1 stop5h 49m
Porter Airlines
Sun 26/412:10 p.m.
YOW
-
IAD
1 stop5h 04m
Porter Airlines
Deal found 2/3C$ 422
Mon 30/311:40 a.m.
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Mon 6/46:45 a.m.
YOW
-
IAD
1 stop4h 09m
Porter Airlines
Deal found 1/3C$ 425
Fri 17/46:00 p.m.
IAD
-
YOW
1 stop4h 29m
Porter Airlines
Fri 24/41:15 p.m.
YOW
-
IAD
1 stop3h 59m
Porter Airlines
Deal found 3/3C$ 428

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 5 March 2026.

Round-trip from

C$ 390

One-way from

C$ 187

Popular in

September

Cheapest in

April

Average price

C$ 443
Porter Airlines
  • Porter Airlines
  • 18/4-25/4
  • 2 total stops
  • 8h 03m total
  • Washington, D.C. to Ottawa
Search Deals
Porter Airlines
  • Porter Airlines
  • 7/4
  • 1 total stop
  • 3h 24m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 200 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 5 March 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

Tue 7/4

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

Nonstop1h 44m

Ottawa

Sun 12/4

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

Nonstop1h 50m

C$ 584

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 16/4

8:20 a.m.-1:59 p.m.

1 stop5h 39m

Ottawa

Sun 19/4

10:00 a.m.-11:50 a.m.

Nonstop1h 50m

C$ 596

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 6/6

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

Nonstop1h 45m

Ottawa

Sun 7/6

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

Nonstop1h 43m

C$ 625

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 30/7

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

Nonstop1h 45m

Ottawa

Sun 2/8

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

Nonstop1h 44m

C$ 625
Quickest round-trip

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 27/5

5:06 p.m.-6:48 p.m.

Nonstop1h 42m

Ottawa

Fri 5/6

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

Nonstop1h 43m

C$ 625

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Tue 31/3

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

Nonstop1h 47m

Ottawa

Thu 2/4

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

Nonstop1h 50m

C$ 630

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 18/6

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

Nonstop1h 45m

Ottawa

Mon 22/6

5:50 p.m.-11:19 p.m.

1 stop5h 29m

C$ 630

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Tue 31/3

8:15 a.m.-10:03 a.m.

Nonstop1h 48m

Ottawa

Sat 4/4

2:40 p.m.-4:28 p.m.

Nonstop1h 48m

C$ 630

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Tue 5/5

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

Nonstop1h 47m

Ottawa

Sun 10/5

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

Nonstop1h 50m

C$ 630

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Tue 31/3

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

Nonstop1h 44m

Ottawa

Wed 1/4

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

Nonstop1h 50m

C$ 630

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/2

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
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 December is currently the most expensive (average of C$ 355). 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 5 March 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 81% 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 4 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 Republic Airways (100%), United Airlines (77%) or GoJet (71%) 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, 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 December is currently the most expensive (average of C$ 355). 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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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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