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Washington, D.C.

$131+ 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — WAS
Jul 23 — Jul 301
Thu 7/23
Thu 7/30
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 June 23, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 6/21. 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.
Thu 7/238:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Sun 7/263:55 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 6/21$205
This Cheapflightsfares deal was found by Cheapflights users on 6/18. 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.
Fri 7/171:40 pm
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Tue 7/2111:05 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 6/18$206
This SmartFares deal was found by Cheapflights users on 6/22. 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 7/168:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Sun 7/193:55 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 6/22$207
This Super.com deal was found by Cheapflights users on 6/20. 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 7/111:40 pm
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Sun 7/123:55 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 6/20$208
This Cheapflightsfares deal was found by Cheapflights users on 6/20. 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.
Fri 7/108:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Sun 7/123:55 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 6/20$209
This iWofly deal was found by Cheapflights users on 6/22. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:40 pm
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Thu 8/133:50 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 6/22$210
This Cheapflightsfares deal was found by Cheapflights users on 6/19. 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.
Wed 7/88:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Wed 7/83:55 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 6/19$211
This Cheapflightsfares deal was found by Cheapflights users on 6/18. 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.
Fri 7/38:55 am
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Sun 7/511:05 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 6/18$214
This FlightHub deal was found by Cheapflights users on 6/18. 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.
Thu 7/91:40 pm
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Sun 7/123:55 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 6/18$215
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Tue 10/65:27 pm
YYZ
-
IAD
1 stop5h 25m
United Airlines
Wed 10/78:28 am
IAD
-
YYZ
Nonstop1h 36m
United Airlines
Deal found 6/18$216
This Air Canada deal was found by Cheapflights users on 6/21. 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.
Fri 7/247:20 am
YYZ
-
DCA
Nonstop1h 32m
Air Canada
Mon 7/276:59 am
DCA
-
YYZ
Nonstop1h 36m
Air Canada
Deal found 6/21$243
This Air Canada deal was found by Cheapflights users on 6/20. 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.
Fri 7/241:55 pm
YYZ
-
IAD
Nonstop1h 29m
Air Canada
Sun 7/269:55 am
IAD
-
YYZ
Nonstop1h 26m
Air Canada
Deal found 6/20$243

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 June 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$205
(Cheapflightsfares)

One-way from

$131
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$283

Good round-trip deal

$196 or less

Good one-way deal

$142 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. 11% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 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 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 June 23, 2026.
Use the filters below to find and compare flights from Ontario to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 7/16

8:55 am-10:25 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Tue 7/28

3:55 pm-5:25 pm

Nonstop1h 30m

$234

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 7/12

8:55 am-10:25 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sun 8/2

3:50 pm-5:20 pm

Nonstop1h 30m

$236

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 7/16

1:40 pm-3:11 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Tue 8/4

3:50 pm-5:20 pm

Nonstop1h 30m

$236

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 7/3

1:40 pm-3:11 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Mon 7/6

11:05 am-12:35 pm

Nonstop1h 30m

$243

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Thu 8/27

8:20 am-12:00 pm

1 stop3h 40m

Washington, D.C. Reagan-National

Tue 9/1

9:40 am-2:21 pm

1 stop4h 41m

$248

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Tue 8/25

4:30 pm-9:48 pm

1 stop5h 18m

Washington, D.C. Reagan-National

Fri 8/28

6:00 am-11:51 am

1 stop5h 51m

$252

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 7/24

8:55 am-10:25 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sun 7/26

11:05 am-12:35 pm

Nonstop1h 30m

$259

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 7/17

1:40 pm-3:11 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 7/19

3:55 pm-5:25 pm

Nonstop1h 30m

$259

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 7/22

8:55 am-10:25 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sun 7/26

11:05 am-12:35 pm

Nonstop1h 30m

$259

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Fri 7/17

8:20 am-12:00 pm

1 stop3h 40m

Washington, D.C. Reagan-National

Tue 7/21

6:00 am-11:51 am

1 stop5h 51m

$262

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/18

Showing 1-10 of 60 resultsSorted by cheapest first
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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, January is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of $78). Flying from Region of Ontario to Washington, D.C. in February is currently the most expensive (average of $563). 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 June 23, 2026.

It’s typically best to fly out from Region of Ontario to Washington, D.C. in the afternoon. Doing so could potentially save you 34% on the flight price compared to flying at noon, which is usually more expensive.

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 June 23, 2026.

The most flights from CAON to WAS are scheduled on a Monday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (26 on average).

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

How far ahead should I book a flight from Region of Ontario to Washington, D.C.?

Booking 57 days in advance of your planned departure date is, on average, the best time to get cheap flights from Region of Ontario to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 June 20, 2026.

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

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.?

    United Airlines, Porter Airlines, and Air Canada can get you from Region of Ontario to Washington, D.C. in just under 1h 30m. Your travel time can differ by up to 3h 55m. 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 $101. However, be on the lookout for offers from Air Canada and American 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 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 (92%), Copa Airlines (91%) and Republic Airways (91%).

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

    On average you can expect to pay $335 for a flight from Region of Ontario to Washington, D.C.. The cheapest flight overall is $149 while the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl) is currently priced at $290.

  • 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, January is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of $78). Flying from Region of Ontario to Washington, D.C. in February is currently the most expensive (average of $563). 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
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Laurel
Hanover
Falls Church
Waldorf
Silver Spring
Largo
Clinton
Hunt Valley

Browse thousands of different options on Cheapflights for your next trip

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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 June 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$133Average$367FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$181Average$370FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$189Average$326FlexibilityNo cancel feeOn-time52%
American AirlinesCheapest$245Average$322FlexibilityNo cancel feeOn-time71%
DeltaCheapest$389Average$559FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$498Average$622FlexibilityNo cancel feeOn-time60%

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