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Cheap flights from Ontario to Washington, D.C. from C$ 171

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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — WAS
20 Feb — 27 Feb1
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 21 January 2026.

Thu 5/34:30 p.m.
YYZ
-
DCA
Nonstop1h 35m
Air Canada
Thu 12/39:40 a.m.
DCA
-
YYZ
Nonstop1h 37m
Air Canada
Deal found 19/1C$ 271
Sat 21/33:00 p.m.
YYZ
-
IAD
1 stop5h 54m
Air Canada
Sat 4/49:55 a.m.
IAD
-
YYZ
1 stop6h 44m
Air Canada
Deal found 20/1C$ 271
Sat 14/26:15 a.m.
YYZ
-
DCA
1 stop4h 06m
Air Canada
Sun 15/212:55 p.m.
DCA
-
YYZ
1 stop6h 31m
Air Canada
Deal found 19/1C$ 272
Wed 4/28:15 a.m.
YYZ
-
DCA
1 stop4h 04m
Air Canada
Wed 11/26:59 a.m.
DCA
-
YYZ
Nonstop1h 36m
Air Canada
Deal found 19/1C$ 275
Wed 4/24:10 p.m.
YYZ
-
IAD
1 stop5h 15m
Air Canada
Wed 11/29:00 a.m.
IAD
-
YYZ
Nonstop1h 28m
Air Canada
Deal found 19/1C$ 275
Sun 8/37:20 a.m.
YYZ
-
DCA
Nonstop1h 35m
Air Canada
Sun 8/38:40 p.m.
DCA
-
YYZ
Nonstop1h 37m
Air Canada
Deal found 20/1C$ 278
Thu 12/28:50 a.m.
YTZ
-
IAD
Nonstop1h 32m
Porter Airlines
Sun 15/26:30 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 20/1C$ 278
Thu 5/38:55 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Wed 18/311:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 19/1C$ 283
Sat 7/311:00 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Sat 14/31:45 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 21/1C$ 285
Sat 14/211:05 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Sat 21/21:50 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 21/1C$ 286
Mon 18/56:25 p.m.
YYZ
-
DCA
Nonstop1h 33m
Air Canada
Sat 23/56:55 p.m.
DCA
-
YYZ
Nonstop1h 32m
Air Canada
Deal found 19/1C$ 288
Wed 25/27:10 a.m.
YYZ
-
IAD
1 stop26h 15m
Multiple Airlines
Mon 2/38:15 a.m.
IAD
-
YYZ
1 stop30h 05m
Multiple Airlines
Deal found 20/1C$ 288

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 21 January 2026.

Round-trip from

C$ 271

One-way from

C$ 171

Popular in

June

Cheapest in

October

Average price

C$ 383

Good round-trip deal

C$ 297 or less

Good one-way deal

C$ 190 or less
Air Canada
  • Air Canada
  • 21/3-4/4
  • 2 total stops
  • 13h 59m total
  • Ontario to Washington, D.C.
Search Deals
Air Canada
  • Air Canada
  • 9/2
  • Nonstop
  • 1h 35m 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 January 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 21 January 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.

YTZ - IAD

YTZIAD

Toronto Island

Thu 12/2

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

Nonstop1h 32m

Washington, D.C. Dulles Intl

Sun 15/2

6:30 p.m.-8:00 p.m.

Nonstop1h 30m

C$ 278

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 7/3

11:00 a.m.-12:29 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sat 14/3

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

Nonstop1h 30m

C$ 285

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

Sun 22/2

6:30 p.m.-8:00 p.m.

Nonstop1h 30m

C$ 289

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 14/2

11:05 a.m.-12:34 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 15/2

6:30 p.m.-8:00 p.m.

Nonstop1h 30m

C$ 290

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 8/3

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

Nonstop1h 29m

Washington, D.C. Dulles Intl

Thu 12/3

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

Nonstop1h 30m

C$ 292

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 22/5

1:50 p.m.-3:21 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Mon 25/5

11:30 a.m.-1:01 p.m.

Nonstop1h 31m

C$ 292

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 1/5

8:45 a.m.-10:16 a.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Thu 7/5

4:10 p.m.-5:43 p.m.

Nonstop1h 33m

C$ 292

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 27/3

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

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 30/3

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

Nonstop1h 30m

C$ 292

TorontoWashington, D.C.

YYZ - DCA

YYZDCA

Toronto Pearson Intl

Fri 13/3

6:10 p.m.-7:45 p.m.

Nonstop1h 35m

Washington, D.C. Reagan-National

Mon 16/3

6:50 p.m.-8:27 p.m.

Nonstop1h 37m

C$ 297

TorontoWashington, D.C.

YYZ - DCA

YYZDCA

Toronto Pearson Intl

Sat 14/2

9:00 p.m.-10:35 p.m.

Nonstop1h 35m

Washington, D.C. Reagan-National

Sat 21/2

6:59 a.m.-8:35 a.m.

Nonstop1h 36m

C$ 297

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/1

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$ 101). Flying from Region of Ontario to Washington, D.C. in January is currently the most expensive (average of C$ 227). 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 21 January 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 17 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. Saturday evenings 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 21 January 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. All flights are typically direct.

  • 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$ 106. Porter Airlines flights start at C$ 121 while deals on Air Canada start at C$ 178 one-way.

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

    While some choose either Toronto Pearson Intl - Washington, D.C. Dulles Intl or Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl, Toronto Pearson Intl - Washington, D.C. Reagan-National 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 (68%), Republic Airways( 68%).

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

    On average you can expect to pay C$ 1,253 for a flight from Region of Ontario to Washington, D.C.. The cheapest flight overall is C$ 105 while the most popular route, (Toronto Pearson Intl - Washington, D.C. Reagan-National) is currently priced at C$ 308.

  • 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$ 101). Flying from Region of Ontario to Washington, D.C. in January is currently the most expensive (average of C$ 227). 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

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Alternative routes for Ontario to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Reagan-National flights
Pearson Intl to Dulles Intl flights
Pierre Elliott Trudeau Intl to Dulles Intl flights
Pierre Elliott Trudeau Intl to Reagan-National flights
Toronto Island to Dulles Intl flights
Vancouver Intl to Dulles Intl flights
Ottawa to Dulles Intl flights
Ottawa to Reagan-National flights
Vancouver Intl to Reagan-National flights
Calgary to Dulles Intl flights
Toronto Island to Reagan-National flights
Calgary to Reagan-National flights
Edmonton to Dulles Intl flights
Kelowna to Dulles Intl flights
Winnipeg to Dulles Intl flights
Kelowna to Reagan-National flights
Edmonton to Reagan-National flights
Winnipeg to Reagan-National flights
Victoria to Dulles Intl flights
Victoria to Reagan-National flights
Québec City to Reagan-National flights
Québec City to Dulles Intl flights
Halifax to Reagan-National flights
Halifax to Dulles Intl flights
St. John's to Dulles Intl flights
St. John's to Reagan-National flights
London to Reagan-National flights
Saskatoon to Reagan-National flights
Regina to Dulles Intl flights
Fort McMurray to Reagan-National flights
Kamloops to Dulles Intl flights
Fredericton to Dulles Intl flights
London to Dulles Intl flights
Thunder Bay to Dulles Intl flights
Regina to Reagan-National flights
Penticton to Dulles Intl flights
Hamilton to Reagan-National flights

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 21 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 185AverageC$ 319FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 196AverageC$ 425FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapestC$ 200AverageC$ 338FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 202AverageC$ 589FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 210AverageC$ 412FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
DeltaCheapestC$ 307AverageC$ 375FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 384AverageC$ 749FlexibilityNo 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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