HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington, D.C.

$98+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — WAS
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Washington, D.C. with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 November 3, 2025.

This SmartFares deal was found by Cheapflights users on 10/31. 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 12/58:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Mon 12/811:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/31$188
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/273:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Tue 12/26:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 11/1$189
This Trip.com deal was found by Cheapflights users on 11/2. 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.
Thu 12/48:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 12/711:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 11/2$190
This SmartFares deal was found by Cheapflights users on 10/31. 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.
Sat 11/2211:00 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Tue 12/26:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/31$191
This Trip.com deal was found by Cheapflights users on 11/1. 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.
Fri 12/53:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Sat 12/131:45 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 11/1$192
This SmartFares deal was found by Cheapflights users on 11/1. 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.
Sat 12/611:00 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Sat 12/131:45 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 11/1$193
This Mytrip deal was found by Cheapflights users on 11/1. 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 11/2211:00 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 11/236:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 11/1$200
This SmartFares deal was found by Cheapflights users on 11/1. 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 11/203:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 11/236:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 11/1$201
This SmartFares deal was found by Cheapflights users on 11/2. 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 11/208:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Thu 11/2711:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 11/2$204
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 12/23:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Tue 12/96:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 11/2$205
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/213:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 11/236:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 11/1$206
This Trip.com deal was found by Cheapflights users on 11/2. 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.
Thu 12/47:20 amYYZ - DCA
Nonstop1h 35mAir Canada
Sun 12/76:00 amDCA - YYZ
1 stop4h 49mAir Canada
Deal found 11/2$210

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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$187
(SmartFares)

One-way from

$98
(Mytrip)

Popular in

June

Cheapest in

April

Average price

$244

Good round-trip deal

$191 or less

Good one-way deal

$183 or less
Provider with most accurate pricing for Toronto (YTO)-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto (YTO)-Washington, D.C. (WAS) flights.
Search Deals
From Ontario to Washington, D.C. (WAS)
Search Deals
One-way flight from Ontario to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($18 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 November 2025
Search Deals
Price to beat on a round-trip flight from Ontario to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Ontario to Washington, D.C. (WAS).
Search Deals

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 November 3, 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

Thu 12/4

3:45 pm-5:14 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 12/7

11:40 am-1:10 pm

Nonstop1h 30m

$189

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 2/23

8:55 am-10:24 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Fri 2/27

6:30 pm-8:00 pm

Nonstop1h 30m

$190

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 11/22

11:00 am-12:29 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 12/2

6:30 pm-8:00 pm

Nonstop1h 30m

$191

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 11/20

8:55 am-10:24 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 12/2

6:30 pm-8:00 pm

Nonstop1h 30m

$207

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 11/17

3:45 pm-5:14 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 11/23

6:30 pm-8:00 pm

Nonstop1h 30m

$207

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 11/20

8:55 am-10:24 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 11/23

11:40 am-1:10 pm

Nonstop1h 30m

$207

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 11/17

3:45 pm-5:14 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 11/25

6:30 pm-8:00 pm

Nonstop1h 30m

$207

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 11/15

11:00 am-12:29 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sat 12/6

1:45 pm-3:15 pm

Nonstop1h 30m

$210

TorontoWashington, D.C.

YYZ - DCA

YYZDCA

Toronto Pearson Intl

Wed 12/17

6:10 pm-7:45 pm

Nonstop1h 35m

Washington, D.C. Reagan-National

Wed 12/24

6:00 am-11:40 am

1 stop5h 40m

$212

TorontoWashington, D.C.

YYZ - DCA

YYZDCA

Toronto Pearson Intl

Thu 12/11

7:20 am-8:55 am

Nonstop1h 35m

Washington, D.C. Reagan-National

Sat 12/13

6:59 am-8:35 am

Nonstop1h 36m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 60 results
1
2
3
...
6

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, April is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of $70). Flying from Region of Ontario to Washington, D.C. in January is currently the most expensive (average of $187). 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 November 3, 2025.

It’s typically best to fly out from Region of Ontario to Washington, D.C. in the morning. Doing so could potentially save you 5% on the flight price compared to flying at noon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Ontario to Washington, D.C.. Price data was last updated on December 16, 2024.

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

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 November 3, 2025.

The most flights from CAON to WAS are scheduled on a Thursday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (23 on average).

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 Delta can get you from Region of Ontario to Washington, D.C. in just under 1h 29m. Your travel time can differ by up to 4h 10m. Airlines will cover a distance of 339 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $128. However, be on the lookout for offers from American Airlines and Air Canada, 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 Toronto Island - 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 Avianca (94%), Republic Airways (93%) and Copa Airlines (92%).

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

    On average you can expect to pay $509 for a flight from Region of Ontario to Washington, D.C.. The cheapest flight overall is $142 while the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl) is currently priced at $229.

  • 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, April is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of $70). Flying from Region of Ontario to Washington, D.C. in January is currently the most expensive (average of $187). 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
Alexandria
Woodbridge
Tysons
Arlington
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Owings Mills
Linthicum Heights
Manassas
Largo
Oxon Hill
Laurel
Towson
National Harbor
Waldorf
Bowie

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.

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
Toronto Island to Dulles Intl flights
Pierre Elliott Trudeau Intl to Dulles Intl flights
Pierre Elliott Trudeau Intl to Reagan-National flights
Vancouver Intl to Dulles Intl flights
Vancouver Intl to Reagan-National flights
Edmonton to Dulles Intl flights
Ottawa to Dulles Intl flights
Edmonton to Reagan-National flights
Ottawa to Reagan-National flights
Calgary to Dulles Intl flights
Calgary to Reagan-National flights
Winnipeg to Dulles Intl flights
Winnipeg to Reagan-National flights
Toronto Island to Reagan-National flights
Halifax to Dulles Intl flights
Halifax to Reagan-National flights
Québec City to Dulles Intl flights
Moncton to Dulles Intl flights
Saskatoon to Reagan-National flights
Québec City to Reagan-National flights
Victoria to Reagan-National flights
Whitehorse to Dulles Intl flights
Victoria to Dulles Intl flights
St. John's to Dulles Intl flights
St. John's to Reagan-National flights
Kelowna to Dulles Intl flights
Fort McMurray to Reagan-National flights
Kelowna to Reagan-National flights
London to Reagan-National flights
London 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$133Average$333FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$158Average$366FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$174Average$321FlexibilityNo cancel feeOn-time52%
American AirlinesCheapest$213Average$340FlexibilityNo cancel feeOn-time71%
DeltaCheapest$222Average$393FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$290Average$369FlexibilityNo cancel feeOn-time60%

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.