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$97+ Cheap flights from Washington, D.C. (WAS) to Ontario

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 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YYZ
Jul 11 — Jul 181
Sat 7/11
Sat 7/18
1 adult, Economy
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Cheap 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 June 11, 2026.

This Super.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/93:55 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Thu 7/168:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/8$206
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:05 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Tue 7/148:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/7$208
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/94:00 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Mon 7/138:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/7$209
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/294:00 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Tue 6/301:45 pm
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Deal found 6/8$210
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:00 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Sun 7/128:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/7$211
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:25 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Fri 8/281:40 pm
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/8$212
This Justfly.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/73:50 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Sat 8/151:40 pm
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/8$213
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2211:05 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Wed 7/298:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/8$214
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/233:50 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Wed 8/261:40 pm
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/8$215
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:50 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Thu 8/271:40 pm
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/8$216
This Kissandfly.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/163:55 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Mon 7/201:40 pm
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Deal found 6/6$217
This Super.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/93:55 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Mon 7/208:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Deal found 6/9$219

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 June 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$206
(Super.com)

One-way from

$97
(Super.com)

Popular in

May

Cheapest in

January

Average price

$280

Good round-trip deal

$239 or less

Good one-way deal

$103 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Toronto (YTO) flights.
Search Deals
From Washington, D.C. (WAS) to Ontario
Search Deals
One-way flight from Washington, D.C. (WAS) to Ontario
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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

 
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 2,558,603 searches. Data last updated June 11, 2026.
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 - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 7/11

5:15 pm-7:02 pm

Nonstop1h 47m

Toronto Pearson Intl

Sat 7/25

7:43 pm-9:26 pm

Nonstop1h 43m

$308

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Mon 7/6

12:40 pm-6:20 pm

1 stop5h 40m

Toronto Island

Mon 7/13

8:20 am-12:00 pm

1 stop3h 40m

$309

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Wed 8/5

12:40 pm-6:20 pm

1 stop5h 40m

Toronto Island

Mon 8/10

8:20 am-12:00 pm

1 stop3h 40m

$309

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Mon 6/29

12:29 pm-5:24 pm

1 stop4h 55m

Toronto Pearson Intl

Sat 7/11

6:10 am-11:28 am

1 stop5h 18m

$333

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Tue 7/14

7:10 pm-11:59 pm

1 stop4h 49m

Toronto Pearson Intl

Thu 7/16

11:00 am-3:52 pm

1 stop4h 52m

$333

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 7/4

6:00 am-1:34 pm

1 stop7h 34m

Toronto Pearson Intl

Thu 7/16

6:14 pm-11:13 pm

1 stop4h 59m

$333

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Mon 7/13

12:40 pm-6:20 pm

1 stop5h 40m

Toronto Island

Thu 7/16

8:20 am-12:00 pm

1 stop3h 40m

$349

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Thu 8/20

12:40 pm-6:20 pm

1 stop5h 40m

Toronto Island

Mon 8/24

8:20 am-12:00 pm

1 stop3h 40m

$365

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Fri 8/7

12:40 pm-6:20 pm

1 stop5h 40m

Toronto Island

Mon 8/10

8:20 am-12:00 pm

1 stop3h 40m

$367

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Tue 7/28

9:40 am-2:21 pm

1 stop4h 41m

Toronto Island

Tue 8/4

8:20 am-12:00 pm

1 stop3h 40m

$369

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

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
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, June is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $264). Flying from Washington, D.C. to Region of Ontario in February is currently the most expensive (average of $904). 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 June 11, 2026.

It’s optimal to fly from Washington, D.C. to Region of Ontario at noon. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight in the evening.

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 June 11, 2026.

The most flights from WAS to CAON are scheduled on a Monday (33 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 on average).

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

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 78 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?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Ontario. Price data was last updated on November 25, 2025.

Travelers seeking maximum savings on their Washington, D.C. to Region of Ontario flight should consider departing on Friday 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

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 June 11, 2026.
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
438 reviews

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Overall

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Porter Airlines
8.0
Very good
438 reviews
Porter Airlines
8.0
Very good
438 reviews

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Overall

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Transat
7.8
Good
555 reviews
Porter Airlines
8.0
Very good
438 reviews

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Overall

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
United Airlines
7.4
Good
9,808 reviews
Porter Airlines
8.0
Very good
438 reviews

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Overall

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
American Airlines
7.1
Good
11,641 reviews
Porter Airlines
8.0
Very good
438 reviews

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Overall

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Canada
7.1
Good
11,159 reviews
Porter Airlines
8.0
Very good
438 reviews

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Overall

8.0

Food

7.6

Crew

8.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.

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?

    A quick flight from Washington, D.C. to Region of Ontario can take about 1h 47m. United Airlines provides one of the quickest options available for as low as $308. The distance from Washington, D.C. to Region of Ontario is about 346 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?

    $80 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Porter Airlines and Air Transat, with prices starting from $80 and $95, 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. Reagan-National - Toronto Pearson Intl, Washington, D.C. Dulles Intl - 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: ANA (95%), Copa Airlines (86%), Republic Airways( 86%).

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

    On average you can expect to pay $1,300 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is $123 while the most popular route, (Washington, D.C. Reagan-National - Toronto Pearson Intl) is currently priced at $295.

  • 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, June is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $264). Flying from Washington, D.C. to Region of Ontario in February is currently the most expensive (average of $904). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from Washington, D.C. to Ontario

Discover the top 7 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 2,558,603 searches. Data last updated June 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$54Average$339FlexibilityNo cancel feeOn-time52%
DeltaCheapest$106Average$335FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$139Average$457FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$187Average$400FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$211Average$263FlexibilityNo cancel feeOn-time50%
American AirlinesCheapest$271Average$374FlexibilityNo cancel feeOn-time71%
WestJetCheapest$495Average$681FlexibilityNo cancel feeOn-time60%

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