Find flights
Deals
When to book
FAQs

Cheap flights from Ontario to Washington, D.C. from C$ 181

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 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — WAS
8 Sep — 15 Sep1
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 9 August 2026.

Thu 27/86:25 p.m. -
Nonstop1h 32m
Mon 31/86:59 a.m. -
Nonstop1h 36m
Deal found 8/8C$ 276
Fri 4/910:30 a.m. -
1 stop4h 25m
Tue 8/99:45 a.m. -
1 stop4h 48m
Deal found 7/8C$ 276
Thu 27/88:20 a.m. -
1 stop3h 40m
Mon 31/812:40 p.m. -
1 stop5h 40m
Deal found 9/8C$ 276
Thu 20/87:10 a.m. -
1 stop4h 50m
Mon 24/811:00 a.m. -
Nonstop1h 27m
Deal found 6/8C$ 277
Sat 22/89:15 a.m. -
Nonstop1h 30m
Tue 25/811:25 a.m. -
Nonstop1h 30m
Deal found 8/8C$ 277
Thu 27/81:55 p.m. -
Nonstop1h 29m
Sun 30/89:45 a.m. -
1 stop6h 40m
Deal found 9/8C$ 277
Thu 20/84:40 p.m. -
Nonstop1h 32m
Sun 23/86:59 a.m. -
Nonstop1h 36m
Deal found 6/8C$ 279
Thu 20/810:45 a.m. -
1 stop4h 16m
Mon 24/85:20 p.m. -
Nonstop1h 36m
Deal found 6/8C$ 279
Thu 20/81:55 p.m. -
Nonstop1h 29m
Mon 24/84:20 p.m. -
Nonstop1h 30m
Deal found 6/8C$ 279
Thu 20/810:45 a.m. -
1 stop4h 16m
Sun 23/811:25 a.m. -
Nonstop1h 30m
Deal found 6/8C$ 280
Mon 31/88:20 a.m. -
1 stop3h 40m
Wed 2/912:40 p.m. -
1 stop5h 40m
Deal found 8/8C$ 280
Sat 19/93:15 p.m. -
Nonstop1h 23m
Sat 26/99:45 a.m. -
1 stop4h 35m
Deal found 4/8C$ 281

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 9 August 2026.

Round-trip from

C$ 276

One-way from

C$ 181

Popular in

March

Cheapest in

October

Average price

C$ 372

Good round-trip deal

C$ 267 or less

Good one-way deal

C$ 215 or less
Air Canada
  • Air Canada
  • 27/8-31/8
  • Nonstop
  • 3h 08m total
  • Ontario to Washington, D.C.
Search Deals
Air Canada
  • Air Canada
  • 13/9
  • Nonstop
  • 1h 35m total
  • Ontario to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 9 August 2026.
Use the filters below to find and compare flights from Ontario to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoWashington, D.C.

YTZ Toronto Island - DCA Washington, D.C. Reagan-National

YTZDCA

Toronto Island

Thu 10/9

8:20 a.m.-12:14 p.m.

1 stop3h 54m

Washington, D.C. Reagan-National

Thu 17/9

12:55 p.m.-6:20 p.m.

1 stop5h 25m

C$ 280

TorontoWashington, D.C.

YTZ Toronto Island - DCA Washington, D.C. Reagan-National

YTZDCA

Toronto Island

Wed 2/9

8:20 a.m.-12:00 p.m.

1 stop3h 40m

Washington, D.C. Reagan-National

Sat 5/9

4:20 p.m.-9:31 p.m.

1 stop5h 11m

C$ 286

TorontoWashington, D.C.

YTZ Toronto Island - DCA Washington, D.C. Reagan-National

YTZDCA

Toronto Island

Tue 25/8

9:30 a.m.-3:38 p.m.

1 stop6h 08m

Washington, D.C. Reagan-National

Thu 27/8

6:00 a.m.-11:51 a.m.

1 stop5h 51m

C$ 290

TorontoWashington, D.C.

YTZ Toronto Island - DCA Washington, D.C. Reagan-National

YTZDCA

Toronto Island

Thu 20/8

8:20 a.m.-12:00 p.m.

1 stop3h 40m

Washington, D.C. Reagan-National

Sun 23/8

6:00 a.m.-1:15 p.m.

2 stops7h 15m

C$ 298
Quickest round-trip

TorontoWashington, D.C.

YTZ Toronto Island - IAD Washington, D.C. Dulles Intl

YTZIAD

Toronto Island

Fri 28/8

9:15 a.m.-10:45 a.m.

Nonstop1h 30m

Washington, D.C. Dulles Intl

Tue 1/9

3:50 p.m.-5:20 p.m.

Nonstop1h 30m

C$ 311

TorontoWashington, D.C.

YTZ Toronto Island - DCA Washington, D.C. Reagan-National

YTZDCA

Toronto Island

Sat 29/8

8:20 a.m.-12:00 p.m.

1 stop3h 40m

Washington, D.C. Reagan-National

Tue 1/9

12:40 p.m.-6:20 p.m.

1 stop5h 40m

C$ 311

TorontoWashington, D.C.

YTZ Toronto Island - DCA Washington, D.C. Reagan-National

YTZDCA

Toronto Island

Wed 26/8

8:20 a.m.-12:00 p.m.

1 stop3h 40m

Washington, D.C. Reagan-National

Sun 30/8

6:00 a.m.-1:15 p.m.

2 stops7h 15m

C$ 315

TorontoWashington, D.C.

YTZ Toronto Island - DCA Washington, D.C. Reagan-National

YTZDCA

Toronto Island

Sat 29/8

8:20 a.m.-12:00 p.m.

1 stop3h 40m

Washington, D.C. Reagan-National

Wed 2/9

9:40 a.m.-6:20 p.m.

2 stops8h 40m

C$ 315

TorontoWashington, D.C.

YYZ Toronto Pearson Intl - DCA Washington, D.C. Reagan-National

YYZDCA

Toronto Pearson Intl

Fri 11/9

6:00 a.m.-10:17 a.m.

1 stop4h 17m

Washington, D.C. Reagan-National

Sun 13/9

7:25 p.m.-10:59 p.m.

1 stop3h 34m

C$ 330

TorontoWashington, D.C.

YYZ Toronto Pearson Intl - IAD Washington, D.C. Dulles Intl

YYZIAD

Toronto Pearson Intl

Fri 21/8

7:00 a.m.-11:52 a.m.

1 stop4h 52m

Washington, D.C. Dulles Intl

Sun 23/8

8:28 a.m.-10:04 a.m.

Nonstop1h 36m

C$ 330

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/8

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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, October is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of C$ 369). Flying from Region of Ontario to Washington, D.C. in December is currently the most expensive (average of C$ 460). 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 9 August 2026.

It’s typically best to fly out from Region of Ontario to Washington, D.C. in the afternoon. Doing so could potentially save you 28% on the flight price compared to flying at noon, which is usually more expensive.

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 9 August 2026.

The most flights from CAON to WAS are scheduled on a Monday (32 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (17 on average).

How much does it cost to fly round-trip from Region of Ontario to Washington, D.C.?

Airfare is below average for this route at the moment.
Region of Ontario to Washington, D.C. flights typically cost between C$ 333 and C$ 619 in August.
The cheapest round-trip price found within the last 5 days was C$ 276 on Air Canada (27 Aug-31 Aug).

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

Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from Region of Ontario to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 8 August 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.

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 30m. 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 Porter Airlines, which is currently one of the cheapest options available, starting at C$ 155. United Airlines flights start at C$ 192 while deals on Air Canada start at C$ 196 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 Toronto Island - 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: Republic Airways (81%), Copa Airlines (80%), United Airlines( 79%).

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

    On average you can expect to pay C$ 2,069 for a flight from Region of Ontario to Washington, D.C.. The cheapest flight overall is C$ 194 while the most popular route, (Toronto Pearson Intl - Washington, D.C. Reagan-National) is currently priced at C$ 293.

  • 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, October is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of C$ 369). Flying from Region of Ontario to Washington, D.C. in December is currently the most expensive (average of C$ 460). 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
Alexandria
Hanover
Oxon Hill
Gaithersburg
Reston
Herndon
Ellicott City
Arlington
Fredericksburg
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 9 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 113AverageC$ 502FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapestC$ 229AverageC$ 464FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Porter AirlinesCheapestC$ 233AverageC$ 357FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 251AverageC$ 640FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 300AverageC$ 602FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
DeltaCheapestC$ 353AverageC$ 628FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 647AverageC$ 796FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.