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Washington, D.C.

$124+ Cheap flights from Ontario to Washington, D.C. (WAS)

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — WAS
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Ontario to Washington, D.C.

Keep the following information in mind while searching for Ontario to Washington, D.C. flight deals. Data was last updated September 15, 2025.

Round-trip from

$185
(SmartFares)

One-way from

$124
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$236

Good round-trip deal

$193 or less

Good one-way deal

$126 or less
From Ontario to Washington, D.C. (WAS)
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One-way flight from Ontario to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 6% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Ontario to Washington, D.C. (WAS).
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Price to beat on a one-way flight from Ontario to Washington, D.C. (WAS).
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Find flight deals from Ontario to Washington, D.C.

Cheapest flights from Ontario to Washington, D.C.
Explore the most affordable flight options available from Ontario to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This SmartFares deal was found by Cheapflights users on 9/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:45 amYTZ - IAD
Nonstop1h 31mPorter Airlines
Mon 10/2011:35 amIAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 9/14$185
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Tue 11/411:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 9/13$189
This SmartFares deal was found by Cheapflights users on 9/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/238:45 amYTZ - IAD
Nonstop1h 31mPorter Airlines
Sun 10/2611:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 9/13$190
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/41:35 pmYTZ - IAD
Nonstop1h 31mPorter Airlines
Sun 10/511:35 amIAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 9/13$192
This Trip.com deal was found by Cheapflights users on 9/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:15 amYYZ - DCA
1 stop4h 04mAir Canada
Tue 11/46:50 pmDCA - YYZ
Nonstop1h 37mAir Canada
Deal found 9/13$195
This SmartFares deal was found by Cheapflights users on 9/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/151:35 pmYTZ - IAD
Nonstop1h 31mPorter Airlines
Fri 10/244:20 pmIAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 9/12$195
This Trip.com deal was found by Cheapflights users on 9/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:30 amYYZ - DCA
1 stop5h 38mAir Canada
Sat 10/116:50 pmDCA - YYZ
Nonstop1h 32mAir Canada
Deal found 9/13$196
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/288:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Mon 11/311:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 9/13$197
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Sun 10/128:45 amYTZ - IAD
Nonstop1h 31mPorter Airlines
Sun 10/1911:35 amIAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 9/14$198
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/238:45 amYTZ - IAD
Nonstop1h 31mPorter Airlines
Wed 11/511:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 9/13$199
This FlightHub deal was found by Cheapflights users on 9/14. 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.
Sat 10/251:35 pmYTZ - IAD
Nonstop1h 31mPorter Airlines
Sun 10/2611:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 9/14$200
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 11/238:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Tue 12/211:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 9/13$201

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Washington, D.C. 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 September 15, 2025.
Use the filters below to find and compare flights from Ontario to Washington, D.C. that are best for you.

Fly from

Ontario

Fly to

Washington, D.C.

Route

Depart

Return

Price

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 10/18

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 10/19

11:35 am-1:08 pm

Nonstop1h 33m

$185

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 11/27

8:55 am-10:24 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Wed 12/3

11:40 am-1:10 pm

Nonstop1h 30m

$192

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 10/4

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 10/5

11:35 am-1:08 pm

Nonstop1h 33m

$193

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 10/25

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 10/26

6:30 pm-8:00 pm

Nonstop1h 30m

$194

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 10/25

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Mon 10/27

6:30 pm-8:00 pm

Nonstop1h 30m

$194

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 10/21

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Fri 10/24

4:20 pm-5:53 pm

Nonstop1h 33m

$194

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 10/17

8:45 am-10:16 am

Nonstop1h 31m

Washington, D.C. Dulles Intl

Tue 10/21

4:20 pm-5:53 pm

Nonstop1h 33m

$194

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 10/15

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Thu 10/16

11:35 am-1:08 pm

Nonstop1h 33m

$195

TorontoWashington, D.C.

YYZ - DCA

YYZDCA

Toronto Pearson Intl

Tue 12/9

10:58 am-12:40 pm

Nonstop1h 42m

Washington, D.C. Reagan-National

Wed 12/10

2:54 pm-4:35 pm

Nonstop1h 41m

$217

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 10/28

6:55 pm-8:29 pm

Nonstop1h 34m

Washington, D.C. Dulles Intl

Sun 11/9

4:25 pm-5:58 pm

Nonstop1h 33m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Ontario 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 Ontario to Washington, D.C.

What is the cheapest month to book a flight from Region of Ontario to Washington, D.C.?

Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of $292). Flying from Region of Ontario to Washington, D.C. in April is currently the most expensive (average of $337). 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 ON to WAS?

Find hourly flight availability from Ontario to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Washington, D.C. as you normally would.

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

Explore weekly flight availability from Ontario to Washington, D.C.. 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 September 15, 2025.

The most flights from CAON to WAS are scheduled on a Thursday (28 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (22 on average).

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

Related info for your journey

Find useful and relevant information for your journey from Ontario to Washington, D.C.. 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 Region of Ontario to Washington, D.C.?

    Porter Airlines, Air Canada, and American Airlines can get you from Region of Ontario to Washington, D.C. in just under 1h 31m. Your travel time will be generally consistent. Airlines will cover a distance of 339 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines to fly from Region of Ontario to Washington, D.C. one-way?

    The cheapest airline one-way is Porter Airlines, with whom users have recently found tickets for as low as $124. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from Region of Ontario to Washington, D.C. for a low price.

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

    Most travelers choose Toronto Pearson Intl - Washington, D.C. Dulles Intl, Toronto Pearson Intl - Washington, D.C. Reagan-National or Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl when deciding on the best route from Region of Ontario to Washington, D.C..

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

    The top 3 most reliable airlines when flying from Region of Ontario to Washington, D.C. are Republic Airways (86%), Air Canada (83%) and Copa Airlines (80%).

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

    On average you can expect to pay $495 for a flight from Region of Ontario to Washington, D.C.. The cheapest flight overall is $134 while the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl) is currently priced at $198.

  • Can I find deals for flights from Ontario to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Ontario to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Washington, D.C..

  • Can I find deals for business class flights from Ontario to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Ontario to Washington, D.C. 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 Region of Ontario to Washington, D.C.?

    Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of $292). Flying from Region of Ontario to Washington, D.C. in April is currently the most expensive (average of $337). 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

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Woodbridge
Alexandria
Arlington
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
Dundalk
National Harbor

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Dulles Intl flights
Pearson Intl to Reagan-National flights
Pierre Elliott Trudeau Intl to Dulles Intl flights
Pierre Elliott Trudeau Intl to Reagan-National flights
Toronto Island to Dulles Intl flights
Vancouver Intl to Dulles Intl flights
Ottawa to Dulles Intl flights
Vancouver Intl to Reagan-National flights
Ottawa to Reagan-National flights
Calgary to Dulles Intl flights
Calgary to Reagan-National flights
Toronto Island to Reagan-National flights
Winnipeg to Dulles Intl flights
Halifax to Dulles Intl flights
Halifax to Reagan-National flights
Edmonton to Dulles Intl flights
Edmonton to Reagan-National flights
Winnipeg to Reagan-National flights
Kelowna to Dulles Intl flights
Québec City to Dulles Intl flights
St. John's to Dulles Intl flights
Québec City to Reagan-National flights
Victoria to Dulles Intl flights
Victoria to Reagan-National flights
Moncton to Dulles Intl flights
St. John's to Reagan-National flights
Kelowna to Reagan-National flights
London to Reagan-National flights
Saskatoon to Reagan-National flights
Fort McMurray to Reagan-National flights
London to Dulles Intl flights
Whitehorse to Dulles Intl flights

Top 6 airlines flying from Ontario to Washington, D.C.

Discover the top 6 airlines that operate flights from Ontario to Washington, D.C.. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$158Average$363FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$174Average$322FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$184Average$333FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$213Average$349FlexibilityNo cancel feeOn-time71%
DeltaCheapest$221Average$368FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$290Average$361FlexibilityNo cancel feeOn-time60%

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