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Cheap flights from Washington, D.C. to Ontario from C$ 96

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 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YYZ
14 Jan — 21 Jan1
1 adult
1 adult, Economy, 0 bags

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

Enter your travel dates to find the best prices.

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 15 December 2025.

Wed 31/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Wed 14/18:50 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 12/12C$ 319
Tue 30/126:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Mon 5/18:50 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 15/12C$ 324
Sat 27/1211:40 a.m.IAD - YTZ
Nonstop1h 30mMultiple Airlines
Sat 17/17:00 a.m.YTZ - IAD
2 stops13h 18mMultiple Airlines
Deal found 13/12C$ 348
Sat 27/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Tue 30/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 13/12C$ 380
Sat 27/126:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Wed 31/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 13/12C$ 383
Sat 27/1211:40 a.m.IAD - YUL
1 stop3h 40mPorter Airlines
Tue 30/126:45 a.m.YUL - IAD
1 stop3h 39mPorter Airlines
Deal found 13/12C$ 384
Tue 30/126:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Wed 31/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 14/12C$ 384
Tue 30/126:30 p.m.IAD - YUL
1 stop4h 15mPorter Airlines
Wed 31/126:45 a.m.YUL - IAD
1 stop3h 39mPorter Airlines
Deal found 14/12C$ 392
Wed 31/129:00 a.m.IAD - YYZ
Nonstop1h 29mAir Canada
Wed 14/12:15 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Deal found 12/12C$ 394
Sat 27/126:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Mon 29/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 13/12C$ 427
Tue 30/129:40 a.m.DCA - YYZ
Nonstop1h 37mAir Canada
Wed 14/19:00 p.m.YYZ - DCA
Nonstop1h 35mAir Canada
Deal found 15/12C$ 435
Tue 30/126:50 p.m.DCA - YYZ
Nonstop1h 37mAir Canada
Tue 13/18:15 a.m.YYZ - DCA
1 stop4h 04mAir Canada
Deal found 15/12C$ 442

Find 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 15 December 2025.

Round-trip from

C$ 273

One-way from

C$ 96

Popular in

November

Cheapest in

June

Average price

C$ 410

Good round-trip deal

C$ 252 or less

Good one-way deal

C$ 173 or less
28/1-4/2
  • 28/1-4/2
  • 2 total stops
  • 37h 49m total
  • Washington, D.C. to Ontario
Search Deals
21/1
  • 21/1
  • 1 total stop
  • 10h 20m total
  • Washington, D.C. to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Ontario.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Ontario.
Search Deals

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 15 December 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 29/1

11:35 a.m.-1:09 p.m.

Nonstop1h 34m

Toronto Island

Sun 1/2

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

Nonstop1h 32m

C$ 295

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 26/2

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

Nonstop1h 30m

Toronto Island

Sun 1/3

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

Nonstop1h 29m

C$ 296

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sun 4/1

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

Nonstop1h 30m

Toronto Island

Mon 5/1

8:50 a.m.-10:19 a.m.

Nonstop1h 29m

C$ 296

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 8/1

9:45 a.m.-2:55 p.m.

1 stop5h 10m

Toronto Island

Mon 12/1

8:50 a.m.-10:19 a.m.

Nonstop1h 29m

C$ 300

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 11/3

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

Nonstop1h 30m

Toronto Island

Mon 16/3

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

Nonstop1h 29m

C$ 302

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 28/1

11:35 a.m.-1:09 p.m.

Nonstop1h 34m

Toronto Island

Wed 4/2

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

Nonstop1h 32m

C$ 304

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 22/1

11:35 a.m.-1:09 p.m.

Nonstop1h 34m

Toronto Island

Sun 25/1

8:50 a.m.-10:19 a.m.

Nonstop1h 29m

C$ 306

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 18/2

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

Nonstop1h 30m

Toronto Island

Wed 4/3

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

Nonstop1h 29m

C$ 310

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Thu 8/1

12:55 p.m.-6:13 p.m.

1 stop5h 18m

Toronto Island

Mon 12/1

5:30 p.m.-9:56 p.m.

1 stop4h 26m

C$ 313

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 23/1

11:35 a.m.-1:09 p.m.

Nonstop1h 34m

Toronto Island

Sun 25/1

8:50 a.m.-10:19 a.m.

Nonstop1h 29m

C$ 319

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/12

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, March is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of C$ 129). Flying from Washington, D.C. to Region of Ontario in August is currently the most expensive (average of C$ 235). 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 15 December 2025.

When flying from Washington, D.C. to Region of Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 25% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Ontario. Price data was last updated on 16 December 2024.

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

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 15 December 2025.

The most flights from WAS to CAON are scheduled on a Tuesday (29 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (16 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 15 December 2025.
Get a feel of what it's like to fly with Porter Airlines and Air 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
8.0
Very good
399 reviews
Check prices

Boarding

8.2

Food

7.6

Comfort

7.9

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
8.0
Very good
399 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Boarding

8.2

Food

7.6

Comfort

7.9

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,525 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Boarding

8.2

Food

7.6

Comfort

7.9

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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 34m. 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 Porter Airlines, which is currently one of the cheapest options available, starting at C$ 91. Air Canada flights start at C$ 122 while deals on United Airlines start at C$ 148 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: Jazz (85%), United Airlines (79%), Air Canada( 79%).

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

    On average you can expect to pay C$ 443 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is C$ 210 while the most popular route, (Washington, D.C. Dulles Intl - Toronto Pearson Intl) is currently priced at C$ 354.

  • 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, March is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of C$ 129). Flying from Washington, D.C. to Region of Ontario in August is currently the most expensive (average of C$ 235). 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

Browse thousands of different options on Cheapflights for your next trip

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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
Reagan-National to Pierre Elliott Trudeau Intl flights
Dulles Intl to Vancouver Intl flights
Dulles Intl to Toronto Island flights
Reagan-National to Vancouver Intl flights
Dulles Intl to Calgary flights
Reagan-National to Calgary flights
Dulles Intl to Ottawa flights
Dulles Intl to Québec City flights
Dulles Intl to Winnipeg flights
Reagan-National to Toronto Island flights
Reagan-National to Québec City flights
Reagan-National to Ottawa flights
Reagan-National to Winnipeg flights
Dulles Intl to Halifax flights
Dulles Intl to Edmonton flights
Dulles Intl to Abbotsford flights
Reagan-National to Edmonton flights
Dulles Intl to Kelowna flights
Dulles Intl to London flights
Reagan-National to Victoria flights
Dulles Intl to Victoria flights
Dulles Intl to Regina flights
Dulles Intl to Charlottetown flights
Dulles Intl to Sault Ste Marie flights
Reagan-National to Regina flights
Reagan-National to Nanaimo 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 15 December 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 182AverageC$ 507FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 243AverageC$ 418FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 290AverageC$ 477FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 456AverageC$ 631FlexibilityNo 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 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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