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Cheap flights from Ontario to Washington, D.C. from C$ 169

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 19/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — WAS
5 Mar — 12 Mar1
1 adult
1 adult, Economy, 0 bags

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

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Washington, D.C.
Explore the most affordable flight options available from Ontario to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 February 2026.

Wed 1/47:10 a.m.
YYZ
-
DCA
1 stop4h 51m
Air Canada
Wed 8/46:00 a.m.
DCA
-
YYZ
1 stop5h 34m
Air Canada
Deal found 2/2C$ 270
Sat 11/45:30 p.m.
YYZ
-
IAD
1 stop3h 48m
Air Canada
Mon 13/412:40 p.m.
IAD
-
YYZ
1 stop4h 48m
Air Canada
Deal found 2/2C$ 270
Fri 3/48:15 a.m.
YYZ
-
DCA
1 stop3h 46m
Air Canada
Sun 5/412:55 p.m.
DCA
-
YYZ
1 stop6h 20m
Air Canada
Deal found 31/1C$ 276
Thu 26/28:50 a.m.
YTZ
-
IAD
Nonstop1h 32m
Porter Airlines
Mon 2/311:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 2/2C$ 277
Thu 26/28:15 a.m.
YYZ
-
DCA
1 stop4h 04m
Air Canada
Sun 1/312:55 p.m.
DCA
-
YYZ
1 stop7h 51m
Air Canada
Deal found 2/2C$ 284
Fri 20/33:45 p.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Mon 23/311:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/2C$ 285
Thu 5/38:55 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Thu 12/311:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/2C$ 287
Sun 22/112:15 p.m.
YYZ
-
IAD
Nonstop1h 31m
Air Canada
Sat 28/114:30 p.m.
IAD
-
YYZ
Nonstop1h 33m
Air Canada
Deal found 2/2C$ 288
Thu 5/37:10 a.m.
YYZ
-
DCA
1 stop5h 09m
Air Canada
Sun 15/312:55 p.m.
DCA
-
YYZ
1 stop6h 31m
Air Canada
Deal found 2/2C$ 290
Wed 18/38:55 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Wed 25/311:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/2C$ 290
Fri 10/42:05 p.m.
YYZ
-
IAD
Nonstop1h 34m
Air Canada
Tue 14/48:15 a.m.
IAD
-
YYZ
1 stop4h 52m
Air Canada
Deal found 2/2C$ 290
Sat 28/24:30 p.m.
YYZ
-
DCA
Nonstop1h 35m
Air Canada
Sat 28/28:40 p.m.
DCA
-
YYZ
Nonstop1h 35m
Air Canada
Deal found 2/2C$ 291

Find flight deals from Ontario to Washington, D.C.

Keep the following information in mind while searching for Ontario to Washington, D.C. flight deals. Data was last updated 3 February 2026.

Round-trip from

C$ 270

One-way from

C$ 169

Popular in

June

Cheapest in

October

Average price

C$ 348

Good round-trip deal

C$ 279 or less

Good one-way deal

C$ 193 or less
Air Canada
  • Air Canada
  • 1/4-8/4
  • 2 total stops
  • 10h 25m total
  • Ontario to Washington, D.C.
Search Deals
Porter Airlines
  • Porter Airlines
  • 16/3
  • Nonstop
  • 1h 29m total
  • Ontario to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Ontario to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Ontario to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Washington, D.C. 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 3 February 2026.
Use the filters below to find and compare flights from Ontario to Washington, D.C. that are best for you.

Fly from

Ontario

Fly to

Washington, D.C.

Route

Depart

Return

Price

TorontoWashington, D.C.

YYZ - DCA

YYZDCA

Toronto Pearson Intl

Fri 3/4

8:15 a.m.-12:01 p.m.

1 stop3h 46m

Washington, D.C. Reagan-National

Sun 5/4

12:55 p.m.-7:15 p.m.

1 stop6h 20m

C$ 276

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 26/2

8:50 a.m.-10:22 a.m.

Nonstop1h 32m

Washington, D.C. Dulles Intl

Mon 2/3

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

C$ 279

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 5/3

8:55 a.m.-10:24 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Thu 12/3

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

C$ 287

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 8/4

8:55 a.m.-10:24 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Fri 10/4

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

C$ 290

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 20/3

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sat 4/4

1:45 p.m.-3:15 p.m.

Nonstop1h 30m

C$ 294

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Thu 26/2

9:30 a.m.-3:31 p.m.

1 stop6h 01m

Washington, D.C. Reagan-National

Mon 2/3

12:55 p.m.-6:10 p.m.

1 stop5h 15m

C$ 296

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 10/4

8:55 a.m.-10:24 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 12/4

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

C$ 296

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 20/2

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 23/2

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

C$ 298

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Fri 20/3

10:45 a.m.-3:31 p.m.

1 stop4h 46m

Washington, D.C. Reagan-National

Sun 22/3

12:55 p.m.-6:10 p.m.

1 stop5h 15m

C$ 299

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 19/4

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Wed 22/4

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

C$ 303

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/2

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Washington, D.C.

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

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

Currently, April is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of C$ 100). Flying from Region of Ontario to Washington, D.C. in September is currently the most expensive (average of C$ 216). 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 ON to WAS?

Find hourly flight availability from Ontario to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 February 2026.

It’s typically best to fly out from Region of Ontario to Washington, D.C. in the morning. Doing so could potentially save you 21% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Region of Ontario to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Washington, D.C.. Price data was last updated on 31 January 2026.

Travelers seeking maximum savings on their Region of Ontario to Washington, D.C. flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Region of Ontario to Washington, D.C.

Explore weekly flight availability from Ontario to Washington, D.C.. 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 3 February 2026.

The most flights from CAON to WAS are scheduled on a Monday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (23 on average).

Related info for your journey

Find useful and relevant information for your journey from Ontario to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Region of Ontario to Washington, D.C.?

    Departing from Region of Ontario to Washington, D.C. will take you 1h 32m. The distance between Region of Ontario and Washington, D.C. is about 546 km. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Air Transat, which is currently one of the cheapest options available, starting at C$ 105. Porter Airlines flights start at C$ 120 while deals on Air Canada start at C$ 176 one-way.

  • What are the most popular routes from Region of Ontario to Washington, D.C.?

    While some choose either Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Reagan-National or Toronto Pearson Intl - Washington, D.C. Reagan-National, Toronto Pearson Intl - Washington, D.C. Dulles Intl is the most popular route from Region of Ontario to Washington, D.C..

  • What are the most reliable airlines from Region of Ontario to Washington, D.C.?

    Before booking your flight to Washington, D.C. from Region of Ontario, check out the most reliable airlines to get you to your destination on time: Avianca (68%), Copa Airlines (67%), Republic Airways( 67%).

  • What are the cheapest flights from Region of Ontario to Washington, D.C.?

    On average you can expect to pay C$ 1,551 for a flight from Region of Ontario to Washington, D.C.. The cheapest flight overall is C$ 104 while the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl) is currently priced at C$ 352.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Washington, D.C. 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 Region of Ontario to Washington, D.C.?

    Currently, April is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of C$ 100). Flying from Region of Ontario to Washington, D.C. in September is currently the most expensive (average of C$ 216). 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
Silver Spring
Hanover
Fairfax
Reston
Ellicott City
Oxon Hill
Gaithersburg
Arlington
Herndon
Manassas
Fredericksburg
Alexandria
Rockville

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from Ontario to Washington, D.C.

Discover the top 7 airlines that operate flights from Ontario to Washington, D.C.. 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 3 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 183AverageC$ 315FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 193AverageC$ 435FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapestC$ 198AverageC$ 323FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 200AverageC$ 582FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 207AverageC$ 407FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
DeltaCheapestC$ 303AverageC$ 392FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 379AverageC$ 742FlexibilityNo cancel feeOn-time60%
Search WestJet 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 Ontario to Washington, D.C.?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Washington, D.C. from Ontario today with Cheapflights!

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario to Washington, D.C. for you. Better yet — we are completely free to use.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Washington, D.C. flexibly with Cheapflights today.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington, D.C. from Ontario today and book when prices fit your budget.

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