Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Washington, D.C. to Ontario from C$ 123

WAS — YYZ
24 Oct — 31 Oct1
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

Sat 17/1011:25 a.m. -
Nonstop1h 30m
Fri 23/108:30 a.m. -
1 stop6h 27m
Deal found 19/9C$ 273
Mon 19/1011:25 a.m. -
Nonstop1h 30m
Sun 1/119:10 a.m. -
Nonstop1h 28m
Deal found 20/9C$ 278
Thu 22/106:59 a.m. -
Nonstop1h 36m
Mon 26/108:05 a.m. -
1 stop4h 14m
Deal found 21/9C$ 278
Tue 20/1011:25 a.m. -
Nonstop1h 30m
Tue 3/119:10 a.m. -
Nonstop1h 28m
Deal found 22/9C$ 279
Tue 3/119:55 a.m. -
Nonstop1h 27m
Tue 10/116:40 p.m. -
Nonstop1h 30m
Deal found 19/9C$ 279
Thu 5/116:59 a.m. -
Nonstop1h 33m
Thu 12/117:20 a.m. -
Nonstop1h 38m
Deal found 21/9C$ 280
Sat 17/1011:25 a.m. -
Nonstop1h 30m
Thu 22/109:15 a.m. -
Nonstop1h 30m
Deal found 19/9C$ 282
Sat 7/119:40 a.m. -
Nonstop1h 33m
Sun 8/117:20 a.m. -
Nonstop1h 38m
Deal found 22/9C$ 282
Sat 17/109:55 a.m. -
Nonstop1h 25m
Fri 23/106:55 p.m. -
Nonstop1h 30m
Deal found 19/9C$ 282
Thu 5/1111:20 a.m. -
Nonstop1h 32m
Sun 8/119:10 a.m. -
Nonstop1h 28m
Deal found 22/9C$ 283
Fri 13/118:45 p.m. -
Nonstop1h 33m
Sun 15/117:20 a.m. -
Nonstop1h 38m
Deal found 22/9C$ 283
Fri 27/1111:20 a.m. -
Nonstop1h 32m
Mon 7/124:15 p.m. -
Nonstop1h 28m
Deal found 20/9C$ 285

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

Round-trip from

C$ 273

One-way from

C$ 123

Popular in

May

Cheapest in

January

Average price

C$ 413

Good round-trip deal

C$ 287 or less

Good one-way deal

C$ 138 or less
Air Canada
  • Air Canada
  • 17/10-23/10
  • 1 total stop
  • 7h 57m total
  • Washington, D.C. to Ontario
Search Deals
Porter Airlines
  • Porter Airlines
  • 24/10-31/12
  • Nonstop
  • 1h 30m total
  • Washington, D.C. to Ontario
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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

 
Use the filters below to find and compare flights from Washington, D.C. to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Toronto

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

IADYTZ

Washington, D.C. Dulles Intl

Fri 30/10

5:20 p.m.-6:57 p.m.

Nonstop1h 37m

Toronto Island

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 128

Washington, D.C.Toronto

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

IADYYZ

Washington, D.C. Dulles Intl

Wed 25/11

12:39 p.m.-2:25 p.m.

Nonstop1h 46m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 128

Washington, D.C.Toronto

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

DCAYYZ

Washington, D.C. Reagan-National

Wed 25/11

8:45 p.m.-10:18 p.m.

Nonstop1h 33m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 128

Washington, D.C.Toronto

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

IADYYZ

Washington, D.C. Dulles Intl

Sun 11/10

12:43 p.m.-2:19 p.m.

Nonstop1h 36m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 128
Quickest round-trip

Washington, D.C.Toronto

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

IADYTZ

Washington, D.C. Dulles Intl

Sat 7/11

11:20 a.m.-12:52 p.m.

Nonstop1h 32m

Toronto Island

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 137

Washington, D.C.Toronto

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

IADYTZ

Washington, D.C. Dulles Intl

Fri 30/10

11:20 a.m.-12:52 p.m.

Nonstop1h 32m

Toronto Island

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 137

Washington, D.C.Toronto

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

DCAYYZ

Washington, D.C. Reagan-National

Fri 13/11

5:02 p.m.-10:51 p.m.

1 stop5h 49m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 142

Washington, D.C.Toronto

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

DCAYYZ

Washington, D.C. Reagan-National

Fri 20/11

11:13 a.m.-5:14 p.m.

1 stop6h 01m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 142

Washington, D.C.Toronto

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

DCAYYZ

Washington, D.C. Reagan-National

Tue 13/10

10:30 a.m.-5:56 p.m.

1 stop7h 26m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 142

Washington, D.C.Toronto

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

IADYYZ

Washington, D.C. Dulles Intl

Fri 20/11

12:35 p.m.-5:14 p.m.

1 stop4h 39m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 142

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/9

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

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

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$ 437). Flying from Washington, D.C. to Region of Ontario in July is currently the most expensive (average of C$ 520). 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?

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 in the afternoon, which can drop the price by up to 73% versus a flight at noon.

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

The most flights from WAS to CAON are scheduled on a Wednesday (33 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 on average).

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

Airfare is below average for this route at the moment.
Washington, D.C. to Region of Ontario flights typically cost between C$ 397 and C$ 663 in October.
The cheapest round-trip price found within the last 5 days was C$ 278 on Air Canada (22 Oct-26 Oct).

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

The price you pay for your flight from Washington, D.C. to Region of Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

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

Reviews of airlines servicing Ontario

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
463 reviews
Check prices

Crew

8.6

Entertainment

6.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Porter Airlines
8.0
Very good
463 reviews
Porter Airlines
8.0
Very good
463 reviews
Check prices

Crew

8.6

Entertainment

6.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Air Canada
7.1
Good
11,676 reviews
Porter Airlines
8.0
Very good
463 reviews
Check prices

Crew

8.6

Entertainment

6.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

Related info for your journey

  • 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 35m. Airlines will cover a distance of 557 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$ 113. United Airlines flights start at C$ 125 while deals on Air Canada start at C$ 132 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. Dulles Intl - Toronto Pearson 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 (77%), Copa Airlines (71%), Republic Airways( 71%).

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

    On average you can expect to pay C$ 480 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. Reagan-National - Toronto Pearson Intl) is currently priced at C$ 310.

  • 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$ 437). Flying from Washington, D.C. to Region of Ontario in July is currently the most expensive (average of C$ 520). 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

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

AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 179AverageC$ 581FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapestC$ 231AverageC$ 562FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Porter AirlinesCheapestC$ 288AverageC$ 414FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 303AverageC$ 519FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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.

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.