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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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YYZ
Sep 11 — Sep 181
Fri 9/11
Fri 9/18
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 August 12, 2026.

This Kiwi.com deal was found by Cheapflights users on 8/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:25 am -
Nonstop1h 30m
Sat 8/291:40 pm -
Nonstop1h 30m
Deal found 8/9$199
This Flightnetwork deal was found by Cheapflights users on 8/9. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:55 pm -
1 stop5h 25m
Tue 9/228:20 am -
1 stop3h 54m
Deal found 8/9$199
This FlightHub deal was found by Cheapflights users on 8/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:25 am -
Nonstop1h 30m
Fri 10/21:40 pm -
Nonstop1h 30m
Deal found 8/12$200
This Mytrip deal was found by Cheapflights users on 8/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:40 pm -
1 stop5h 40m
Mon 8/318:20 am -
1 stop3h 40m
Deal found 8/12$200
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:25 pm -
Nonstop1h 30m
Tue 9/159:15 am -
Nonstop1h 30m
Deal found 8/9$201
This Mytrip deal was found by Cheapflights users on 8/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:20 pm -
1 stop5h 11m
Sat 9/128:20 am -
1 stop3h 54m
Deal found 8/8$201
This Mytrip deal was found by Cheapflights users on 8/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:40 pm -
Nonstop1h 31m
Sun 9/63:45 pm -
Nonstop1h 23m
Deal found 8/10$202
This Super.com deal was found by Cheapflights users on 8/12. 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.
Sat 9/54:25 pm -
Nonstop1h 30m
Tue 9/89:15 am -
Nonstop1h 30m
Deal found 8/12$204
This Flightnetwork deal was found by Cheapflights users on 8/11. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:40 pm -
Nonstop1h 31m
Thu 9/248:55 pm -
Nonstop1h 39m
Deal found 8/11$204
This Mytrip deal was found by Cheapflights users on 8/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:40 pm -
Nonstop1h 31m
Wed 9/308:00 am -
1 stop4h 14m
Deal found 8/9$205
This Flightnetwork deal was found by Cheapflights users on 8/9. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:55 am -
Nonstop1h 25m
Wed 9/301:55 pm -
Nonstop1h 30m
Deal found 8/9$205
This Cheapflightsfares deal was found by Cheapflights users on 8/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:50 pm -
Nonstop1h 30m
Mon 8/311:40 pm -
Nonstop1h 30m
Deal found 8/10$206

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 August 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$198
(Flightnetwork)

One-way from

$97
(FlightHub)

Popular in

May

Cheapest in

January

Average price

$316

Good round-trip deal

$235 or less

Good one-way deal

$122 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. 1% potential increase in price ($6 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 12, 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

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

DCAYTZ

Washington, D.C. Reagan-National

Thu 9/24

12:55 pm-6:20 pm

1 stop5h 25m

Toronto Island

Sat 9/26

8:20 am-12:14 pm

1 stop3h 54m

$200

Washington, D.C.Toronto

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

DCAYTZ

Washington, D.C. Reagan-National

Tue 10/20

12:40 pm-6:15 pm

1 stop5h 35m

Toronto Island

Wed 10/21

8:20 am-12:00 pm

1 stop3h 40m

$215

Washington, D.C.Toronto

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

DCAYTZ

Washington, D.C. Reagan-National

Tue 8/25

9:40 am-2:21 pm

1 stop4h 41m

Toronto Island

Mon 8/31

8:20 am-12:00 pm

1 stop3h 40m

$218

Washington, D.C.Toronto

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

DCAYTZ

Washington, D.C. Reagan-National

Wed 10/28

11:05 am-3:56 pm

1 stop4h 51m

Toronto Island

Sat 10/31

8:20 am-12:19 pm

1 stop3h 59m

$218

Washington, D.C.Toronto

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

DCAYTZ

Washington, D.C. Reagan-National

Sat 9/12

9:40 am-2:20 pm

1 stop4h 40m

Toronto Island

Tue 9/15

8:20 am-12:14 pm

1 stop3h 54m

$218

Washington, D.C.Toronto

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

DCAYTZ

Washington, D.C. Reagan-National

Tue 9/8

9:40 am-2:20 pm

1 stop4h 40m

Toronto Island

Tue 9/15

8:20 am-12:14 pm

1 stop3h 54m

$218

Washington, D.C.Toronto

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

DCAYTZ

Washington, D.C. Reagan-National

Mon 8/24

9:40 am-2:21 pm

1 stop4h 41m

Toronto Island

Thu 8/27

8:20 am-12:00 pm

1 stop3h 40m

$218

Washington, D.C.Toronto

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

DCAYTZ

Washington, D.C. Reagan-National

Sat 8/29

9:40 am-2:21 pm

1 stop4h 41m

Toronto Island

Mon 8/31

8:20 am-12:00 pm

1 stop3h 40m

$218

Washington, D.C.Toronto

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

DCAYTZ

Washington, D.C. Reagan-National

Sun 10/11

9:40 am-2:20 pm

1 stop4h 40m

Toronto Island

Thu 10/15

8:20 am-12:00 pm

1 stop3h 40m

$234
Quickest round-trip

Washington, D.C.Toronto

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

IADYTZ

Washington, D.C. Dulles Intl

Tue 8/25

3:50 pm-5:20 pm

Nonstop1h 30m

Toronto Island

Wed 8/26

9:15 am-10:45 am

Nonstop1h 30m

$236

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

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, January is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $312). Flying from Washington, D.C. to Region of Ontario in July is currently the most expensive (average of $369). 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 August 12, 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 31% on the cost of your flight, compared to a flight in the morning.

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 August 12, 2026.

The most flights from WAS to CAON are scheduled on a Monday (35 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 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 $288 and $430 in September.
The cheapest round-trip price found within the last 5 days was $204 on Air Canada (Sep 8-Sep 24).

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 Tuesday 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 August 12, 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
456 reviews

Food

7.5

Entertainment

6.9

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

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
456 reviews
Porter Airlines
8.0
Very good
456 reviews

Food

7.5

Entertainment

6.9

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

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 Transat
7.8
Good
572 reviews
Porter Airlines
8.0
Very good
456 reviews

Food

7.5

Entertainment

6.9

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

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
United Airlines
7.4
Good
10,111 reviews
Porter Airlines
8.0
Very good
456 reviews

Food

7.5

Entertainment

6.9

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

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
American Airlines
7.1
Good
11,913 reviews
Porter Airlines
8.0
Very good
456 reviews

Food

7.5

Entertainment

6.9

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

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
11,465 reviews
Porter Airlines
8.0
Very good
456 reviews

Food

7.5

Entertainment

6.9

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

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

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 30m. Air Canada provides one of the quickest options available for as low as $236. 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 $89 and $106, 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 - Montreal Pierre Elliott Trudeau 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 (79%), United Airlines (76%), Copa Airlines( 71%).

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

    On average you can expect to pay $1,745 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is $96 while the most popular route, (Washington, D.C. Reagan-National - Toronto Pearson Intl) is currently priced at $224.

  • 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 $312). Flying from Washington, D.C. to Region of Ontario in July is currently the most expensive (average of $369). 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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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 August 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$54Average$337FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$96Average$387FlexibilityNo cancel feeOn-time67%
DeltaCheapest$106Average$379FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$139Average$462FlexibilityNo cancel feeOn-time69%
Air TransatCheapest$245Average$342FlexibilityNo cancel feeOn-time50%
American AirlinesCheapest$268Average$372FlexibilityNo cancel feeOn-time71%
WestJetCheapest$516Average$681FlexibilityNo cancel feeOn-time60%

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