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Cheap flights from Washington, D.C. to Ottawa from C$ 133

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. to Ottawa are usually found in January or April, booked 72 days in advance, depart on a Tuesday or Saturday and return on a Friday

Cheap flight deals from Washington, D.C. to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 March 2025.

Round-trip from

C$ 311

One-way from

C$ 133

Popular in

March

Cheapest in

January

Average price

C$ 682

Good round-trip deal

C$ 488 or less
Porter Airlines
  • Porter Airlines
  • 24/4-29/4
  • 2 total stops
  • 10h 13m total
  • Washington, D.C. to Ottawa
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Porter Airlines
  • Porter Airlines
  • 12/5
  • 1 total stop
  • 4h 58m total
  • Washington, D.C. to Ottawa
Search Deals
High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease (C$ 19 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Ottawa.
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Find flight deals from Washington, D.C. to Ottawa

Cheapest flights from Washington, D.C. to Ottawa
Explore the most affordable flight options available from Washington, D.C. to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 March 2025.

Thu 24/47:00 a.m.IAD - YOW
1 stop4h 14mPorter Airlines
Tue 29/47:00 a.m.YOW - IAD
1 stop5h 59mPorter Airlines
Deal found 24/3C$ 311
Thu 17/412:55 p.m.DCA - YOW
Nonstop1h 32mAir Canada
Sun 20/410:25 a.m.YOW - DCA
Nonstop1h 36mAir Canada
Deal found 24/3C$ 371
Thu 17/42:40 p.m.IAD - YOW
1 stop4h 39mAir Canada
Sun 20/49:50 a.m.YOW - IAD
Nonstop1h 43mAir Canada
Deal found 24/3C$ 387
Sun 1/611:35 a.m.IAD - YOW
1 stop4h 58mMultiple Airlines
Fri 6/65:55 a.m.YOW - IAD
1 stop9h 11mMultiple Airlines
Deal found 24/3C$ 431
Mon 14/45:45 a.m.BWI - YOW
2 stops42h 32mMultiple Airlines
Mon 21/44:25 p.m.YOW - BWI
2 stops16h 34mMultiple Airlines
Deal found 23/3C$ 480
Sat 12/47:00 a.m.DCA - YOW
1 stop15h 05mMultiple Airlines
Mon 14/410:25 a.m.YOW - DCA
Nonstop1h 36mMultiple Airlines
Deal found 24/3C$ 579
Thu 17/48:17 a.m.IAD - YOW
Nonstop1h 41mUnited Airlines
Sun 20/49:50 a.m.YOW - IAD
Nonstop1h 43mUnited Airlines
Deal found 24/3C$ 656
Thu 17/46:59 a.m.DCA - YOW
1 stop6h 25mUnited Airlines
Sun 20/46:05 a.m.YOW - DCA
1 stop6h 31mUnited Airlines
Deal found 24/3C$ 695
Wed 9/48:45 a.m.DCA - YOW
2 stops15h 24mDelta
Wed 16/45:55 a.m.YOW - DCA
2 stops12h 47mDelta
Deal found 24/3C$ 877
Mon 18/86:45 p.m.IAD - YOW
2 stops21h 35mWestJet
Thu 28/87:15 p.m.YOW - IAD
1 stop22h 39mWestJet
Deal found 24/3C$ 946
Wed 9/46:00 a.m.BWI - YOW
2 stops18h 09mWestJet
Wed 16/45:55 a.m.YOW - BWI
2 stops14h 05mWestJet
Deal found 24/3C$ 1,195
Thu 19/69:17 a.m.BWI - YOW
2 stops15h 05mDelta
Wed 25/65:55 a.m.YOW - BWI
2 stops9h 57mDelta
Deal found 24/3C$ 1,208

Cheapflights Fare Finder

Customize your flight search to find flights from Washington, D.C. 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 March 2025.
Use the filters below to find and compare flights from Washington, D.C. to Ottawa that are best for you.

Fly from

Washington, D.C.

Fly to

Ottawa

Route

Depart

Return

Price

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 24/4

7:00 a.m.-11:14 a.m.

1 stop4h 14m

Ottawa

Tue 29/4

7:00 a.m.-12:59 p.m.

1 stop5h 59m

C$ 311

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 1/6

11:35 a.m.-4:33 p.m.

1 stop4h 58m

Ottawa

Fri 6/6

5:55 a.m.-3:06 p.m.

1 stop9h 11m

C$ 431

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Mon 14/4

5:45 a.m.-12:17 a.m.

2 stops42h 32m

Ottawa

Mon 21/4

4:25 p.m.-8:59 a.m.

2 stops16h 34m

C$ 480

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 17/4

12:55 p.m.-2:27 p.m.

Nonstop1h 32m

Ottawa

Sun 20/4

10:25 a.m.-12:01 p.m.

Nonstop1h 36m

C$ 494

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 17/4

2:40 p.m.-7:19 p.m.

1 stop4h 39m

Ottawa

Sun 20/4

9:50 a.m.-11:33 a.m.

Nonstop1h 43m

C$ 510

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 17/4

8:17 a.m.-9:58 a.m.

Nonstop1h 41m

Ottawa

Sun 20/4

9:50 a.m.-11:33 a.m.

Nonstop1h 43m

C$ 656

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 11/4

7:18 p.m.-10:05 p.m.

1 stop26h 47m

Ottawa

Sun 13/4

10:25 a.m.-12:01 p.m.

Nonstop1h 36m

C$ 659

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 17/4

6:59 a.m.-1:24 p.m.

1 stop6h 25m

Ottawa

Sun 20/4

6:05 a.m.-12:36 p.m.

1 stop6h 31m

C$ 695

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Wed 9/4

8:45 a.m.-12:09 a.m.

2 stops15h 24m

Ottawa

Wed 16/4

5:55 a.m.-6:42 p.m.

2 stops12h 47m

C$ 877

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 18/8

6:45 p.m.-4:20 p.m.

2 stops21h 35m

Ottawa

Thu 28/8

5:15 p.m.-5:54 p.m.

2 stops24h 39m

C$ 946

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/3

Showing 1-10 of 28 results
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Best time to book a flight from Washington, D.C. to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Washington, D.C. 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. to Ottawa

How far ahead should I book a flight from Washington, D.C. to Ottawa?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Ottawa. Price data was last updated on 21 March 2025.

The best time to book flights from Washington, D.C. to Ottawa is 72 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. to Ottawa?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 224). Flying from Washington, D.C. 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 WAS to YOW?

Find hourly flight availability from Washington, D.C. 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 March 2025.

When flying from Washington, D.C. to Ottawa, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 61% versus a flight in the afternoon.

Weekly flight availability from Washington, D.C. to Ottawa

Explore weekly flight availability from Washington, D.C. to Ottawa. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 25 March 2025.

The most flights from WAS to YOW are scheduled on a Monday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Ottawa by month

Plan your trip to Ottawa by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ottawa ranges from 50.0 - 93.0 mm per month. June is typically the wettest month, when rainfall can reach 93.0 mm. February is typically the driest time to visit Ottawa when rainfall is around 50.0 mm.

Temperature in Ottawa by month

Plan your trip to Ottawa by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ottawa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -10.0 C).

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 25 March 2025.
Get a feel of what it's like to fly with Delta, Porter Airlines and United Airlines from Washington, D.C. to Ottawa by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,890 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Porter Airlines
7.9
Good
275 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
WestJet
7.2
Good
2,785 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
8,952 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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.?

    Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly into when you book flights from Washington, D.C. to Ottawa. 2 airlines have flights to Ottawa from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Ottawa should not be difficult; the airport handles an average of 8 inbound flights from Washington, D.C. per day.

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

    Our cheapest airline available from Washington, D.C. to Ottawa is Porter Airlines. Our recent data shows that you can find tickets from as low as C$ 311 on this airline. Additional options worth looking into are Air Canada and United Airlines, starting at C$ 486 and C$ 656 round-trip. Porter Airlines is 43% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. to Ottawa one-way?

    One-way options have recently been found by users for as low as C$ 133 on Porter Airlines. Other airlines that offer cheap prices include Air Canada from C$ 235 and WestJet from C$ 278 one-way.

  • What are the most popular routes from Washington, D.C. to Ottawa?

    The most popular route from Washington, D.C. to Ottawa is Washington, D.C. Dulles Intl - Ottawa. You may also consider Washington, D.C. Reagan-National - Ottawa or Baltimore/Washington - Ottawa.

  • What are the most reliable airlines from Washington, D.C. to Ottawa?

    Consider GoJet (76%), Air Canada (76%) or United Airlines (76%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. to Ottawa.

  • What are the cheapest flights from Washington, D.C. to Ottawa?

    On average you can expect to pay C$ 513 for a flight from Washington, D.C. to Ottawa. The cheapest flight overall is C$ 488 while the most popular route, (Washington, D.C. Dulles Intl - Ottawa) is currently priced at C$ 311.

  • Can I find deals for flights from Washington, D.C. to Ottawa that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Ottawa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Ottawa.

  • Can I find deals for business class flights from Washington, D.C. to Ottawa?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Ottawa?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 224). Flying from Washington, D.C. 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 Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Gatineau
Perth
Smiths Falls
Prescott
Brockville
Wakefield
Lanark

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Washington, D.C. to Ottawa

Discover the top 2 airlines that operate flights from Washington, D.C. 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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 232AverageC$ 515FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 406AverageC$ 504FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Washington, D.C. to Ottawa?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington, D.C. to Ottawa. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Ottawa?

Cheapflights simply makes it quick and affordable to book flights from Washington, D.C. to Ottawa by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Washington, D.C. to Ottawa with no change fees?

Yes! Cheapflights helps users easily find flights from Washington, D.C. to Ottawa with no change fees.

Can Cheapflights notify me if prices for flights from Washington, D.C. to Ottawa become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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