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Cheap flights from Washington, D.C. Dulles Intl Airport to Ottawa from C$ 213

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YOW
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 17 September 2025.

Round-trip from

C$ 447

One-way from

C$ 213

Popular in

May

Cheapest in

March

Average price

C$ 696
14/10-16/10
  • 14/10-16/10
  • 2 total stops
  • 17h 13m total
  • Washington, D.C. to Ottawa
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12/10
  • 12/10
  • 1 total stop
  • 8h 02m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Dulles Intl to Ottawa

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 17 September 2025.

Tue 14/104:20 p.m.IAD - YOW
1 stop4h 14mPorter Airlines
Tue 21/1011:00 a.m.YOW - IAD
1 stop4h 06mPorter Airlines
Deal found 16/9C$ 447
Thu 9/1011:35 a.m.IAD - YOW
1 stop4h 59mPorter Airlines
Sat 18/109:35 a.m.YOW - IAD
1 stop5h 31mPorter Airlines
Deal found 14/9C$ 448
Fri 31/1011:40 a.m.IAD - YOW
1 stop3h 24mPorter Airlines
Fri 7/116:50 a.m.YOW - IAD
1 stop3h 34mPorter Airlines
Deal found 16/9C$ 450
Wed 15/104:20 p.m.IAD - YOW
1 stop8h 02mMultiple Airlines
Wed 22/105:55 a.m.YOW - IAD
1 stop9h 11mMultiple Airlines
Deal found 16/9C$ 453
Fri 3/107:14 p.m.IAD - YOW
1 stop21h 43mMultiple Airlines
Mon 6/109:35 a.m.YOW - IAD
1 stop5h 31mMultiple Airlines
Deal found 15/9C$ 455
Fri 24/109:58 p.m.IAD - YOW
1 stop18h 59mMultiple Airlines
Mon 27/101:20 p.m.YOW - IAD
1 stop3h 54mMultiple Airlines
Deal found 15/9C$ 464
Fri 17/106:45 p.m.IAD - YOW
1 stop18h 15mMultiple Airlines
Mon 20/1011:00 a.m.YOW - IAD
1 stop4h 06mMultiple Airlines
Deal found 15/9C$ 465
Sun 19/1011:35 a.m.IAD - YOW
1 stop7h 59mMultiple Airlines
Thu 23/105:55 a.m.YOW - IAD
1 stop9h 11mMultiple Airlines
Deal found 16/9C$ 466
Fri 10/104:20 p.m.IAD - YOW
1 stop4h 14mPorter Airlines
Sun 12/107:00 a.m.YOW - IAD
1 stop3h 16mPorter Airlines
Deal found 15/9C$ 470
Thu 30/109:45 a.m.IAD - YOW
2 stops9h 27mMultiple Airlines
Thu 6/115:40 a.m.YOW - IAD
1 stop14h 46mMultiple Airlines
Deal found 15/9C$ 472
Mon 6/104:20 p.m.IAD - YOW
1 stop20h 39mPorter Airlines
Wed 8/1011:00 a.m.YOW - IAD
1 stop4h 06mPorter Airlines
Deal found 15/9C$ 475
Tue 14/104:20 p.m.IAD - YOW
1 stop8h 02mMultiple Airlines
Fri 17/105:55 a.m.YOW - IAD
1 stop9h 11mMultiple Airlines
Deal found 16/9C$ 476

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 17 September 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 9/10

11:35 a.m.-4:34 p.m.

1 stop4h 59m

Ottawa

Sat 18/10

9:35 a.m.-3:06 p.m.

1 stop5h 31m

C$ 448

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 16/11

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

1 stop3h 24m

Ottawa

Mon 17/11

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

1 stop3h 54m

C$ 477

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Tue 14/10

9:00 a.m.-5:20 p.m.

2 stops32h 20m

Ottawa

Tue 21/10

11:00 a.m.-3:06 p.m.

1 stop4h 06m

C$ 486

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 12/10

11:35 a.m.-4:34 p.m.

1 stop4h 59m

Ottawa

Wed 15/10

3:50 p.m.-3:38 p.m.

2 stops23h 48m

C$ 534

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 17/11

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

1 stop5h 49m

Ottawa

Mon 17/11

9:15 p.m.-5:14 p.m.

1 stop19h 59m

C$ 536

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 16/10

11:35 a.m.-4:34 p.m.

1 stop4h 59m

Ottawa

Thu 23/10

8:35 a.m.-3:06 p.m.

1 stop6h 31m

C$ 565

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 17/10

8:16 a.m.-9:58 a.m.

Nonstop1h 42m

Ottawa

Sun 19/10

7:29 p.m.-9:12 p.m.

Nonstop1h 43m

C$ 583

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 15/10

8:16 a.m.-9:58 a.m.

Nonstop1h 42m

Ottawa

Wed 22/10

7:29 p.m.-9:12 p.m.

Nonstop1h 43m

C$ 583

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 6/11

10:12 p.m.-11:54 p.m.

Nonstop1h 42m

Ottawa

Sun 9/11

2:15 p.m.-4:09 p.m.

Nonstop1h 54m

C$ 583

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 17/10

8:16 a.m.-9:58 a.m.

Nonstop1h 42m

Ottawa

Mon 20/10

7:29 p.m.-9:12 p.m.

Nonstop1h 43m

C$ 583

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/9

Showing 1-10 of 16 results
1
2

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, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ottawa (average of C$ 224). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in December is currently the most expensive (average of C$ 326). 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 17 September 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Ottawa in the afternoon. Doing so could potentially save you 47% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ottawa. Reviews last updated 17 September 2025.
Check out reviews from past customers who have flown with Porter Airlines and Air Canada from Washington, D.C. Dulles Intl Airport to Ottawa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
365 reviews
Check prices

Entertainment

7.0

Food

7.6

Overall

7.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
7.9
Good
365 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Entertainment

7.0

Food

7.6

Overall

7.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,000 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Entertainment

7.0

Food

7.6

Overall

7.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

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 2 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 4h 59m. Your travel time can differ by up to . Airlines will cover a distance of 723 km.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Ottawa round-trip?

    Currently priced at C$ 278, Air Canada will fly you from Washington, D.C. Dulles Intl Airport to Ottawa and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Porter Airlines for as low as C$ 390. Air Canada is currently priced 49% below the average price you’ll pay for this route.

  • 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 (79%), Air Canada (79%) or United Airlines (79%) 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, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ottawa (average of C$ 224). Flying from Washington, D.C. Dulles Intl Airport to Ottawa in December is currently the most expensive (average of C$ 326). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Dulles Intl to Ottawa

Discover the top 2 airlines that operate flights from Dulles Intl to Ottawa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 278AverageC$ 561FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 390AverageC$ 479FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Dulles Intl to Ottawa?

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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