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$89+ Cheap flights from Washington, D.C. (WAS) to Ontario

WAS — YYZ
Dec 10 — Dec 171
Thu 12/10
Thu 12/17
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Ontario

Cheapest flights from Washington, D.C. to Ontario

Thu 12/312:55 pm -
1 stop5h 24m
Mon 12/78:20 am -
1 stop3h 59m
Deal found 11/9$231
Tue 12/1511:20 am -
Nonstop1h 30m
Tue 1/59:10 am -
Nonstop1h 32m
Deal found 11/9$241
Tue 11/2411:20 am -
Nonstop1h 30m
Tue 12/159:10 am -
Nonstop1h 30m
Deal found 11/9$242
Mon 12/149:55 am -
Nonstop1h 27m
Mon 12/146:40 pm -
Nonstop1h 30m
Deal found 11/9$242
Tue 12/111:20 am -
Nonstop1h 30m
Thu 12/39:10 am -
Nonstop1h 30m
Deal found 11/9$243
Tue 11/2411:20 am -
Nonstop1h 30m
Tue 12/19:10 am -
Nonstop1h 30m
Deal found 11/9$246
Thu 12/311:20 am -
Nonstop1h 30m
Mon 12/74:15 pm -
Nonstop1h 30m
Deal found 11/9$247
Sat 11/216:55 pm -
Nonstop1h 33m
Sun 11/227:10 am -
1 stop5h 09m
Deal found 11/6$247
Mon 12/146:00 am -
1 stop5h 51m
Mon 12/145:30 pm -
1 stop4h 29m
Deal found 11/9$247
Fri 12/46:25 pm -
Nonstop1h 30m
Sun 12/69:10 am -
Nonstop1h 30m
Deal found 11/9$248
Fri 12/46:25 pm -
Nonstop1h 30m
Fri 12/119:10 am -
Nonstop1h 30m
Deal found 11/7$251
Thu 12/311:20 am -
Nonstop1h 30m
Sun 12/64:15 pm -
Nonstop1h 30m
Deal found 11/8$252

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$231
(Gotogate)

One-way from

$89
(Trip.com)

Popular in

May

Cheapest in

January

Average price

$296

Good round-trip deal

$202 or less

Good one-way deal

$97 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Toronto (YTO) flights.
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From Washington, D.C. (WAS) to Ontario
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One-way flight from Washington, D.C. (WAS) to Ontario
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Highest demand for flights based on searches. 3% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in November 2026
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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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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
Quickest round-trip

Washington, D.C.Toronto

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

IADYTZ

Washington, D.C. Dulles Intl

Thu 12/10

11:20 am-12:50 pm

Nonstop1h 30m

Toronto Island

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$104

Washington, D.C.Toronto

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

IADYTZ

Washington, D.C. Dulles Intl

Thu 11/19

11:20 am-12:50 pm

Nonstop1h 30m

Toronto Island

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$104

Washington, D.C.Toronto

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

IADYTZ

Washington, D.C. Dulles Intl

Sat 12/12

11:20 am-12:50 pm

Nonstop1h 30m

Toronto Island

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$107

Washington, D.C.Toronto

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

IADYTZ

Washington, D.C. Dulles Intl

Fri 12/18

11:20 am-12:50 pm

Nonstop1h 30m

Toronto Island

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$112

Washington, D.C.Toronto

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

IADYTZ

Washington, D.C. Dulles Intl

Mon 11/30

11:20 am-12:50 pm

Nonstop1h 30m

Toronto Island

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$112

Washington, D.C.Toronto

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

IADYTZ

Washington, D.C. Dulles Intl

Tue 1/5

11:20 am-12:52 pm

Nonstop1h 32m

Toronto Island

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$118

Washington, D.C.Toronto

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

IADYTZ

Washington, D.C. Dulles Intl

Sat 5/8

11:15 am-12:45 pm

Nonstop1h 30m

Toronto Island

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$122

Washington, D.C.Toronto

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

DCAYTZ

Washington, D.C. Reagan-National

Sun 11/22

12:55 pm-6:19 pm

1 stop5h 24m

Toronto Island

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$129

Washington, D.C.Toronto

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

DCAYTZ

Washington, D.C. Reagan-National

Wed 12/9

11:05 am-3:51 pm

1 stop4h 46m

Toronto Island

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$131

Washington, D.C.Toronto

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

DCAYTZ

Washington, D.C. Reagan-National

Tue 12/15

11:05 am-5:51 pm

1 stop6h 46m

Toronto Island

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$132

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 60 resultsSorted by cheapest first
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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, December is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $309). Flying from Washington, D.C. to Region of Ontario in July is currently the most expensive (average of $370). 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?

It’s optimal to fly from Washington, D.C. to Region of Ontario in the afternoon. By choosing this option you can save up to 28% on the cost of your flight, compared to 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 Monday (30 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (26 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 $270 and $385 in December.
The cheapest round-trip price found within the last 5 days was $242 on Air Canada (Dec 14-Dec 14).

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. to Region of Ontario, you should look to book at least 61 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 Wednesday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Ontario

Peruse reviews from past customers who have flown with Porter Airlines,Air Transat, andUnited Airlines from Washington, D.C. to Ontario to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
468 reviews

Crew

8.6

Comfort

8.0

Food

7.6

Boarding

8.2

Overall

8.0

Entertainment

6.9

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
468 reviews
Porter Airlines
8.0
Very good
468 reviews

Crew

8.6

Comfort

8.0

Food

7.6

Boarding

8.2

Overall

8.0

Entertainment

6.9

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 Transat
7.7
Good
585 reviews
Porter Airlines
8.0
Very good
468 reviews

Crew

8.6

Comfort

8.0

Food

7.6

Boarding

8.2

Overall

8.0

Entertainment

6.9

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
United Airlines
7.3
Good
10,476 reviews
Porter Airlines
8.0
Very good
468 reviews

Crew

8.6

Comfort

8.0

Food

7.6

Boarding

8.2

Overall

8.0

Entertainment

6.9

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
11,876 reviews
Porter Airlines
8.0
Very good
468 reviews

Crew

8.6

Comfort

8.0

Food

7.6

Boarding

8.2

Overall

8.0

Entertainment

6.9

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
American Airlines
7.0
Good
12,226 reviews
Porter Airlines
8.0
Very good
468 reviews

Crew

8.6

Comfort

8.0

Food

7.6

Boarding

8.2

Overall

8.0

Entertainment

6.9

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?

    A quick flight from Washington, D.C. to Region of Ontario can take about 1h 32m. Air Canada provides one of the quickest options available for as low as $306. The distance from Washington, D.C. to Region of Ontario is about 339 mi. 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?

    $83 is the cheapest one-way deal found within the past few days, from Porter Airlines. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from $88 and $96, respectively.

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

    The most popular flight routes from Washington, D.C. to Region of Ontario are Washington, D.C. Dulles Intl - Toronto Pearson Intl, Washington, D.C. Reagan-National - Toronto Pearson Intl and 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: Avianca (85%), ANA (84%), Copa Airlines( 83%).

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

    On average you can expect to pay $966 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is $88 while the most popular route, (Washington, D.C. Dulles Intl - Toronto Pearson Intl) is currently priced at $259.

  • 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, December is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $309). Flying from Washington, D.C. to Region of Ontario in July is currently the most expensive (average of $370). 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 7 airlines flying from Washington, D.C. to Ontario

AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$96Average$377FlexibilityNo cancel feeOn-time67%
DeltaCheapest$106Average$417FlexibilityNo cancel feeOn-timeN/A
Porter AirlinesCheapest$128Average$331FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$139Average$497FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$263Average$364FlexibilityNo cancel feeOn-time71%
Air TransatCheapest$276Average$527FlexibilityNo cancel feeOn-time50%
WestJetCheapest$496Average$689FlexibilityNo cancel feeOn-time60%

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