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Cheap flights from Washington, D.C. to Ontario from C$ 99

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YYZ
29 nov. — 6 dic.1
1 adult
1 adult, Economy, 0 bags

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 30 octubre 2025.

Round-trip from

C$ 292

One-way from

C$ 99

Popular in

October

Cheapest in

June

Average price

C$ 445

Good round-trip deal

C$ 178 or less

Good one-way deal

C$ 152 or less
Porter Airlines
  • Porter Airlines
  • 4/12-7/12
  • Nonstop
  • 2h 59m total
  • Washington, D.C. to Ontario
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14/1
  • 14/1
  • 1 total stop
  • 16h 43m total
  • Washington, D.C. to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 7 potential savings vs. average RT price).
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Average for round-trip flights in October 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

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 30 octubre 2025.

mié. 19/116:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
dom. 23/118:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 292
jue. 20/1111:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
dom. 23/118:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 293
jue. 4/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
sáb. 6/1211:00 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 295
dom. 7/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
jue. 11/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 299
lun. 24/1111:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
mié. 3/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 300
jue. 27/1111:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
vie. 28/113:45 p.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 304
dom. 23/116:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
vie. 28/113:45 p.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 29/10C$ 306
jue. 20/119:45 a.m.IAD - YTZ
1 stop7h 10mAir Canada
dom. 23/113:30 p.m.YTZ - IAD
1 stop5h 24mAir Canada
Deal found 29/10C$ 307
sáb. 22/111:45 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
vie. 28/113:45 p.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 28/10C$ 311
vie. 12/1212:55 p.m.DCA - YYZ
1 stop6h 31mAir Canada
dom. 14/126:10 p.m.YYZ - DCA
Nonstop1h 35mAir Canada
Deal found 30/10C$ 311
mié. 26/116:00 a.m.DCA - YYZ
1 stop5h 40mAir Canada
vie. 28/115:00 p.m.YYZ - DCA
1 stop4h 56mAir Canada
Deal found 28/10C$ 313
jue. 20/116:00 a.m.DCA - YYZ
1 stop4h 49mAir Canada
dom. 23/116:20 a.m.YYZ - DCA
1 stop4h 06mAir Canada
Deal found 28/10C$ 314

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 30 octubre 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

mar. 25/11

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

Nonstop1h 30m

Toronto Island

vie. 28/11

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

Nonstop1h 29m

C$ 292

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

jue. 20/11

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

Nonstop1h 30m

Toronto Island

dom. 23/11

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

Nonstop1h 29m

C$ 299

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

jue. 4/12

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

Nonstop1h 30m

Toronto Island

dom. 7/12

7:00 a.m.-8:24 p.m.

2 stops13h 24m

C$ 339

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

jue. 11/12

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

Nonstop1h 30m

Toronto Island

dom. 14/12

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

Nonstop1h 29m

C$ 339

BaltimoreToronto

BWI - YYZ

BWIYYZ

Baltimore/Washington

lun. 8/12

10:40 a.m.-12:11 a.m.

1 stop13h 31m

Toronto Pearson Intl

mié. 10/12

5:15 p.m.-7:42 a.m.

1 stop14h 27m

C$ 345

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

mié. 10/12

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

Nonstop1h 30m

Toronto Island

mar. 16/12

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

Nonstop1h 29m

C$ 346

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

vie. 12/12

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

Nonstop1h 30m

Toronto Island

mié. 17/12

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

Nonstop1h 29m

C$ 346

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

jue. 11/12

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

Nonstop1h 30m

Toronto Island

mar. 16/12

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

Nonstop1h 29m

C$ 346

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

dom. 7/12

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

Nonstop1h 30m

Toronto Island

mié. 17/12

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

Nonstop1h 29m

C$ 346

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

mar. 25/11

9:05 a.m.-1:43 p.m.

1 stop4h 38m

Toronto Pearson Intl

mar. 25/11

4:30 p.m.-6:05 p.m.

Nonstop1h 35m

C$ 349

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/10

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$ 127). Flying from Washington, D.C. to Region of Ontario in August is currently the most expensive (average of C$ 239). 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 30 octubre 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 28% 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 Sunday evenings 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.

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 30 octubre 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
384 reviews
Check prices

Food

7.6

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.0

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
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews
Check prices

Food

7.6

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.0

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
10,383 reviews
Porter Airlines
8.0
Very good
384 reviews
Check prices

Food

7.6

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.0

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 30m. Airlines will cover a distance of 546 km. All flights are typically direct.

  • 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$ 141. Porter Airlines flights start at C$ 149 while deals on American Airlines start at C$ 149 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. Reagan-National - Toronto Pearson Intl. You may also consider Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl or Washington, D.C. Reagan-National - 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: Republic Airways (93%), United Airlines (93%), Air Canada( 92%).

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

    On average you can expect to pay C$ 306 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is C$ 151 while the most popular route, (Washington, D.C. Reagan-National - Toronto Pearson Intl) is currently priced at C$ 344.

  • 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$ 127). Flying from Washington, D.C. to Region of Ontario in August is currently the most expensive (average of C$ 239). 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.
Reagan-National to Pearson Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
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Dulles Intl to Toronto Island flights
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Dulles Intl to Québec City flights
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Reagan-National to Regina flights
Dulles Intl to Victoria flights
Dulles Intl to London flights
Dulles Intl to Charlottetown flights
Dulles Intl to Hamilton flights
Dulles Intl to Deer Lake flights
Dulles Intl to Sault Ste Marie flights
Dulles Intl to Thunder Bay 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 30 octubre 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 178AverageC$ 467FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 184AverageC$ 490FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 246AverageC$ 452FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 462AverageC$ 640FlexibilityNo 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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