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Cheap flights from Washington, D.C. to Ontario from C$ 119

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YYZ
11 Oct — 18 Oct1
1 adult
1 adult, Economy

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

Keep the following information in mind while searching for Washington, D.C. to Ontario flight deals. Data was last updated 11 September 2025.

Round-trip from

C$ 281

One-way from

C$ 119

Popular in

August

Cheapest in

June

Average price

C$ 385

Good round-trip deal

C$ 211 or less

Good one-way deal

C$ 149 or less
31/10-3/11
  • 31/10-3/11
  • 2 total stops
  • 23h 45m total
  • Washington, D.C. to Ontario
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22/9
  • 22/9
  • 1 total stop
  • 18h 16m total
  • Washington, D.C. to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Ontario.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Ontario.
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Find flight deals from Washington, D.C. to Ontario

Cheapest flights from Washington, D.C. to Ontario
Explore the most affordable flight options available from Washington, D.C. to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Fri 31/109:11 p.m.BWI - YYZ
1 stop17h 09mMultiple Airlines
Mon 3/114:00 p.m.YYZ - BWI
1 stop6h 36mMultiple Airlines
Deal found 9/9C$ 281
Thu 2/1011:35 a.m.IAD - YTZ
Nonstop1h 33mPorter Airlines
Sun 5/108:45 a.m.YTZ - IAD
Nonstop1h 31mPorter Airlines
Deal found 10/9C$ 292
Wed 24/92:25 p.m.IAD - YYZ
Nonstop1h 32mAir Canada
Thu 25/98:10 a.m.YYZ - IAD
Nonstop1h 28mAir Canada
Deal found 9/9C$ 292
Thu 4/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Tue 9/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 11/9C$ 294
Tue 23/94:35 p.m.DCA - YYZ
1 stop6h 39mAir Canada
Fri 26/96:15 a.m.YYZ - DCA
1 stop4h 05mAir Canada
Deal found 9/9C$ 294
Tue 21/1011:19 a.m.BWI - YYZ
1 stop11h 21mMultiple Airlines
Fri 31/105:15 p.m.YYZ - BWI
1 stop16h 06mMultiple Airlines
Deal found 9/9C$ 295
Thu 30/1011:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Thu 6/118:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 11/9C$ 295
Thu 2/108:59 p.m.IAD - YYZ
1 stop24h 22mMultiple Airlines
Mon 6/107:45 a.m.YYZ - IAD
1 stop7h 54mMultiple Airlines
Deal found 9/9C$ 295
Sun 19/1011:35 a.m.IAD - YTZ
Nonstop1h 33mPorter Airlines
Fri 31/103:45 p.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 10/9C$ 297
Mon 6/1010:20 a.m.IAD - YYZ
Nonstop1h 32mAir Canada
Tue 7/104:30 p.m.YYZ - IAD
1 stop4h 35mAir Canada
Deal found 9/9C$ 297
Sat 11/108:17 p.m.BWI - YYZ
1 stop17h 48mMultiple Airlines
Wed 15/106:30 a.m.YYZ - BWI
1 stop8h 18mMultiple Airlines
Deal found 9/9C$ 298
Sun 12/104:20 p.m.IAD - YTZ
Nonstop1h 33mPorter Airlines
Thu 16/108:45 a.m.YTZ - IAD
Nonstop1h 31mPorter Airlines
Deal found 10/9C$ 298

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Ontario 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 11 September 2025.
Use the filters below to find and compare flights from Washington, D.C. to Ontario that are best for you.

Fly from

Washington, D.C.

Fly to

Ontario

Route

Depart

Return

Price

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 16/10

4:20 p.m.-5:53 p.m.

Nonstop1h 33m

Toronto Island

Sun 19/10

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

Nonstop1h 31m

C$ 294

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sat 25/10

9:35 a.m.-2:45 p.m.

1 stop5h 10m

Toronto Island

Sat 1/11

3:30 p.m.-8:54 p.m.

1 stop5h 24m

C$ 294

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 4/12

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

Nonstop1h 30m

Toronto Island

Sun 7/12

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

Nonstop1h 29m

C$ 294

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 31/10

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

Nonstop1h 30m

Toronto Island

Mon 3/11

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

Nonstop1h 29m

C$ 295

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 3/11

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

Nonstop1h 30m

Toronto Island

Wed 5/11

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

Nonstop1h 29m

C$ 295

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 30/10

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

Nonstop1h 30m

Toronto Island

Wed 5/11

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

Nonstop1h 29m

C$ 295

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sun 19/10

11:35 a.m.-1:08 p.m.

Nonstop1h 33m

Toronto Island

Wed 29/10

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

Nonstop1h 29m

C$ 297

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 15/10

4:20 p.m.-5:53 p.m.

Nonstop1h 33m

Toronto Island

Thu 16/10

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

Nonstop1h 31m

C$ 298

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 2/10

11:35 a.m.-1:08 p.m.

Nonstop1h 33m

Toronto Island

Sun 5/10

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

Nonstop1h 31m

C$ 305

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Wed 8/10

11:00 a.m.-12:32 p.m.

Nonstop1h 32m

Toronto Pearson Intl

Wed 15/10

6:10 p.m.-7:44 p.m.

Nonstop1h 34m

C$ 327

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

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

Have a flexible travel schedule? Discover the best time to fly to Ontario 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 Ontario

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of C$ 168). Flying from Washington, D.C. to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 ON?

Find hourly flight availability from Washington, D.C. to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 September 2025.

When flying from Washington, D.C. to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Explore weekly flight availability from Washington, D.C. to Ontario. 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 11 September 2025.

The most flights from WAS to CAON are scheduled on a Wednesday (29 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (22 on average).

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

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated 11 September 2025.
Get a feel of what it's like to fly with Porter Airlines,Air Transat, andAir Canada from Washington, D.C. to Ontario by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Overall

7.9

Entertainment

7.0

Comfort

7.9

Food

7.6

Boarding

8.1

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
363 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Overall

7.9

Entertainment

7.0

Comfort

7.9

Food

7.6

Boarding

8.1

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 Transat
7.7
Good
438 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Overall

7.9

Entertainment

7.0

Comfort

7.9

Food

7.6

Boarding

8.1

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
363 reviews
Check prices

Crew

8.6

Overall

7.9

Entertainment

7.0

Comfort

7.9

Food

7.6

Boarding

8.1

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 Washington, D.C. to Ontario. 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 Washington, D.C. to Region of Ontario?

    Departing from Washington, D.C. to Region of Ontario will take you 1h 33m. Airlines will cover a distance of 546 km. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at C$ 132. Porter Airlines flights start at C$ 136 while deals on Delta start at C$ 143 one-way.

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

    The most popular route from Washington, D.C. to Region of Ontario is Washington, D.C. Dulles Intl - Toronto Pearson Intl. You may also consider Washington, D.C. Reagan-National - Toronto Pearson Intl or Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl.

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

    Before booking your flight to Region of Ontario from Washington, D.C., check out the most reliable airlines to get you to your destination on time: ANA (89%), Air Canada (84%), Copa Airlines( 81%).

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

    On average you can expect to pay C$ 390 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is C$ 135 while the most popular route, (Washington, D.C. Dulles Intl - Toronto Pearson Intl) is currently priced at C$ 309.

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

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

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

    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 Ontario.

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

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

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of C$ 168). Flying from Washington, D.C. to Region of Ontario in July is currently the most expensive (average of C$ 258). 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

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Alternative routes for Washington, D.C. to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Pearson Intl flights
Reagan-National to Pearson Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Dulles Intl to Toronto Island flights
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Reagan-National to Vancouver Intl flights
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Reagan-National to Ottawa flights
Dulles Intl to Québec City flights
Reagan-National to Calgary flights
Reagan-National to Québec City flights
Dulles Intl to Halifax flights
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Reagan-National to Toronto Island flights
Dulles Intl to Winnipeg flights
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Dulles Intl to Charlottetown flights
Dulles Intl to Victoria flights
Reagan-National to Edmonton flights
Reagan-National to Winnipeg flights
Dulles Intl to Sault Ste Marie flights
Reagan-National to Victoria flights
Dulles Intl to Kelowna flights
Dulles Intl to London flights
Reagan-National to Regina flights
Dulles Intl to Regina flights
Dulles Intl to Thunder Bay flights
Dulles Intl to Sydney flights

Top 4 airlines flying from Washington, D.C. to Ontario

Discover the top 4 airlines that operate flights from Washington, D.C. to Ontario. 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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 160AverageC$ 496FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 183AverageC$ 450FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 244AverageC$ 466FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 472AverageC$ 623FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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

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 Ontario from Washington, D.C. today with Cheapflights!

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

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

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Washington, D.C. to Ontario, users can toggle the no change fees filter when performing a flight search.

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

Of course! You can now track prices for flights from Washington, D.C. to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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