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Washington, D.C.

$127+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — WAS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This SmartFares deal was found by Cheapflights users on 12/14. 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.
Wed 12/318:55 amYTZ - IAD
Nonstop1h 29mAir Transat
Sun 1/46:30 pmIAD - YTZ
Nonstop1h 30mAir Transat
Deal found 12/14$256
This American Airlines deal was found by Cheapflights users on 12/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:19 pmYYZ - DCA
Nonstop1h 45mAmerican Airlines
Fri 1/91:44 pmDCA - YYZ
1 stop9h 15mAmerican Airlines
Deal found 12/17$267
This Trip.com deal was found by Cheapflights users on 12/15. 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.
Wed 12/318:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Sat 1/36:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 12/15$281
This Air Canada deal was found by Cheapflights users on 12/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:55 pmYYZ - IAD
Nonstop1h 31mAir Canada
Tue 1/204:30 pmIAD - YYZ
Nonstop1h 33mAir Canada
Deal found 12/16$289
This Mytrip deal was found by Cheapflights users on 12/16. 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 12/318:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 1/46:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 12/16$292
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:45 amYUL - IAD
1 stop3h 39mPorter Airlines
Wed 1/711:35 amIAD - YUL
1 stop6h 10mPorter Airlines
Deal found 12/14$298
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:45 pmYYZ - DCA
1 stop5h 14mUnited Airlines
Fri 1/910:30 amDCA - YYZ
1 stop5h 32mUnited Airlines
Deal found 12/17$306
This Trip.com deal was found by Cheapflights users on 12/15. 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.
Mon 12/226:45 amYUL - IAD
1 stop3h 39mPorter Airlines
Mon 1/511:35 amIAD - YUL
1 stop4h 55mPorter Airlines
Deal found 12/15$307
This Trip.com deal was found by Cheapflights users on 12/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:45 amYUL - IAD
1 stop3h 39mPorter Airlines
Tue 12/306:30 pmIAD - YUL
1 stop4h 15mPorter Airlines
Deal found 12/14$308
This Air Canada deal was found by Cheapflights users on 12/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:55 pmYYZ - IAD
Nonstop1h 31mAir Canada
Thu 1/294:30 pmIAD - YYZ
Nonstop1h 33mAir Canada
Deal found 12/16$310
This FlightHub deal was found by Cheapflights users on 12/15. 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.
Tue 12/308:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 1/46:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 12/15$311
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:45 amYUL - IAD
1 stop3h 39mPorter Airlines
Wed 1/711:35 amIAD - YUL
1 stop6h 10mPorter Airlines
Deal found 12/14$311

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$199
(Mytrip)

One-way from

$127
(SmartFares)

Popular in

June

Cheapest in

October

Average price

$270

Good round-trip deal

$203 or less

Good one-way deal

$126 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. 8% potential increase in price ($23 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 December 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 December 18, 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

Sun 2/1

8:50 am-10:22 am

Nonstop1h 32m

Washington, D.C. Dulles Intl

Sat 2/28

1:50 pm-3:20 pm

Nonstop1h 30m

$199

TorontoWashington, D.C.

YYZ - DCA

YYZDCA

Toronto Pearson Intl

Fri 2/6

5:15 pm-7:14 pm

Nonstop1h 59m

Washington, D.C. Reagan-National

Tue 2/10

10:12 am-11:59 am

Nonstop1h 47m

$201

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Thu 1/15

10:30 am-3:31 pm

1 stop5h 01m

Washington, D.C. Reagan-National

Mon 1/19

12:55 pm-6:13 pm

1 stop5h 18m

$208

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Thu 1/15

10:30 am-3:31 pm

1 stop5h 01m

Washington, D.C. Reagan-National

Tue 1/20

12:55 pm-6:13 pm

1 stop5h 18m

$208

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Wed 1/28

10:30 am-3:33 pm

1 stop5h 03m

Washington, D.C. Reagan-National

Sun 2/1

12:55 pm-6:13 pm

1 stop5h 18m

$208

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Fri 1/30

8:30 am-3:33 pm

1 stop7h 03m

Washington, D.C. Reagan-National

Fri 2/6

12:55 pm-6:10 pm

1 stop5h 15m

$208

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 2/6

2:45 pm-4:30 pm

Nonstop1h 45m

Washington, D.C. Dulles Intl

Mon 2/9

5:16 pm-6:57 pm

Nonstop1h 41m

$209

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 1/15

2:15 pm-3:46 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 1/18

9:00 am-10:29 am

Nonstop1h 29m

$210

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Wed 1/28

10:30 am-3:33 pm

1 stop5h 03m

Washington, D.C. Reagan-National

Sat 1/31

4:15 pm-9:35 pm

1 stop5h 20m

$212

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 1/19

8:50 am-10:19 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 2/9

11:40 am-1:10 pm

Nonstop1h 30m

$214

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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, April is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of $73). Flying from Region of Ontario to Washington, D.C. in January is currently the most expensive (average of $182). 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 December 18, 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 4% 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. Monday evenings 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 December 18, 2025.

The most flights from CAON to WAS are scheduled on a Monday (28 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (12 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, American Airlines, and Air Canada can get you from Region of Ontario to Washington, D.C. in just under 1h 32m. Your travel time can differ by up to 3h 29m. 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 $89. However, be on the lookout for offers from United 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. Reagan-National, Toronto Pearson Intl - Washington, D.C. Dulles Intl 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 United Airlines (80%), Jazz (75%) and Air Canada (75%).

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

    On average you can expect to pay $732 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. Reagan-National) is currently priced at $219.

  • 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 $73). Flying from Region of Ontario to Washington, D.C. in January is currently the most expensive (average of $182). 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
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Bowie
Largo
McLean
Clinton
Cordova

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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 Reagan-National flights
Pearson Intl to Dulles Intl flights
Toronto Island to Dulles Intl flights
Pierre Elliott Trudeau Intl to Dulles Intl flights
Vancouver Intl to Dulles Intl flights
Pierre Elliott Trudeau Intl to Reagan-National flights
Ottawa to Dulles Intl flights
Vancouver Intl to Reagan-National flights
Toronto Island to Reagan-National flights
Ottawa to Reagan-National flights
Calgary to Dulles Intl flights
Calgary to Reagan-National flights
Edmonton to Dulles Intl flights
Halifax to Dulles Intl flights
Halifax to Reagan-National flights
Winnipeg to Reagan-National flights
Edmonton to Reagan-National flights
Winnipeg to Dulles Intl flights
Saskatoon to Reagan-National flights
Québec City to Dulles Intl flights
Québec City to Reagan-National flights
London to Reagan-National flights
Kelowna to Reagan-National flights
Kelowna to Dulles Intl flights
London to Dulles Intl flights
Moncton to Dulles Intl flights
St. John's to Dulles Intl flights
Victoria to Dulles Intl flights
Whitehorse to Dulles Intl flights
Fort McMurray to Reagan-National flights
St. John's to Reagan-National flights
Victoria to Reagan-National 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$133Average$334FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$158Average$341FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$174Average$317FlexibilityNo cancel feeOn-time52%
American AirlinesCheapest$213Average$340FlexibilityNo cancel feeOn-time71%
DeltaCheapest$222Average$393FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$260Average$334FlexibilityNo cancel feeOn-time60%

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