Ontario

$62+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YYZ
Jan 17 — Jan 241
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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 December 18, 2025.

This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:59 pmDCA - YYZ
Nonstop1h 40mAmerican Airlines
Tue 1/135:15 pmYYZ - DCA
Nonstop1h 59mAmerican Airlines
Deal found 12/15$273
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 12/306:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Wed 1/148:50 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 12/15$298
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Mon 1/58:50 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 12/16$307
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Mon 1/53:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 12/17$311
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:40 amDCA - YYZ
Nonstop1h 37mAir Canada
Wed 1/149:00 pmYYZ - DCA
Nonstop1h 35mAir Canada
Deal found 12/15$316
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 12/315:16 pmIAD - YYZ
Nonstop1h 41mUnited Airlines
Mon 1/56:40 pmYYZ - IAD
1 stop4h 26mUnited Airlines
Deal found 12/17$323
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:40 amIAD - YUL
1 stop5h 35mPorter Airlines
Mon 1/56:45 amYUL - IAD
1 stop3h 34mPorter Airlines
Deal found 12/16$337
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:40 amIAD - YTZ
Nonstop1h 30mMultiple Airlines
Fri 1/28:50 amYTZ - IAD
Nonstop1h 29mMultiple Airlines
Deal found 12/17$338
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Wed 12/318:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 12/15$342
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:00 amIAD - YYZ
Nonstop1h 29mAir Canada
Wed 1/146:55 pmYYZ - IAD
Nonstop1h 31mAir Canada
Deal found 12/15$352
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Fri 1/28:50 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 12/16$358
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:10 pmDCA - YYZ
1 stop7h 54mAir Canada
Tue 1/138:15 amYYZ - DCA
1 stop4h 04mAir Canada
Deal found 12/15$360

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$211
(Kiwi.com)

One-way from

$62
(Kiwi.com)

Popular in

November

Cheapest in

June

Average price

$298

Good round-trip deal

$232 or less

Good one-way deal

$115 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Toronto (YTO) flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Toronto (YTO) flights.
From Washington, D.C. (WAS) to Ontario
One-way flight from Washington, D.C. (WAS) to Ontario
Highest demand for flights based on searches. 7% potential increase in price ($23 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Ontario.
Price to beat on a one-way flight from Washington, D.C. (WAS) to Ontario.

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 December 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Ontario that are best for you.

Fly from

Washington, D.C.

Fly to

Ontario

Route

Depart

Return

Price

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 1/30

11:35 am-1:09 pm

Nonstop1h 34m

Toronto Island

Sun 2/1

8:50 am-10:22 am

Nonstop1h 32m

$211

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sun 1/18

11:35 am-1:09 pm

Nonstop1h 34m

Toronto Island

Thu 1/22

8:50 am-10:19 am

Nonstop1h 29m

$215

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 2/13

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Fri 2/13

3:45 pm-5:14 pm

Nonstop1h 29m

$215

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 4/16

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Mon 4/20

8:55 am-10:24 am

Nonstop1h 29m

$221

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sun 2/1

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Sun 2/8

8:50 am-10:22 am

Nonstop1h 32m

$222

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Sat 1/31

4:15 pm-9:35 pm

1 stop5h 20m

Toronto Island

Sat 2/7

10:45 am-3:33 pm

1 stop4h 48m

$223

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Thu 1/8

6:59 am-8:35 am

Nonstop1h 36m

Toronto Pearson Intl

Mon 1/12

6:10 pm-7:45 pm

Nonstop1h 35m

$225

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 3/13

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Mon 3/16

3:45 pm-5:14 pm

Nonstop1h 29m

$225

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 4/15

6:30 pm-8:00 pm

Nonstop1h 30m

Toronto Island

Sun 4/19

8:55 am-10:24 am

Nonstop1h 29m

$226

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 4/16

6:30 pm-8:00 pm

Nonstop1h 30m

Toronto Island

Fri 4/17

8:55 am-10:24 am

Nonstop1h 29m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 60 results
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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, March is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $94). Flying from Washington, D.C. to Region of Ontario in August is currently the most expensive (average of $171). 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 December 18, 2025.

It’s optimal to fly from Washington, D.C. to Region of Ontario at noon. By choosing this option you can save up to 33% on the cost of your flight, compared to a flight in the evening.

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 December 16, 2024.

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

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 December 18, 2025.

The most flights from WAS to CAON are scheduled on a Monday (29 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (16 on average).

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 December 18, 2025.
Peruse reviews from past customers who have flown with Porter Airlines, Air Transat, and United 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.

Overall

8.0

Crew

8.6

Comfort

7.9

Entertainment

7.0

Food

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Overall

8.0

Crew

8.6

Comfort

7.9

Entertainment

7.0

Food

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Overall

8.0

Crew

8.6

Comfort

7.9

Entertainment

7.0

Food

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Overall

8.0

Crew

8.6

Comfort

7.9

Entertainment

7.0

Food

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Overall

8.0

Crew

8.6

Comfort

7.9

Entertainment

7.0

Food

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Overall

8.0

Crew

8.6

Comfort

7.9

Entertainment

7.0

Food

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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 34m. Porter Airlines provides one of the quickest options available for as low as $211. 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?

    $79 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Porter Airlines and Delta, with prices starting from $80 and $91, respectively.

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

  • 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 (74%), Jazz (73%), United Airlines( 71%).

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

    On average you can expect to pay $579 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is $101 while the most popular route, (Washington, D.C. Dulles Intl - Toronto Pearson Intl) is currently priced at $238.

  • 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, March is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $94). Flying from Washington, D.C. to Region of Ontario in August is currently the most expensive (average of $171). 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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Alternative routes for Washington, D.C. to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$54Average$332FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$127Average$396FlexibilityNo cancel feeOn-time69%
Air TransatCheapest$176Average$245FlexibilityNo cancel feeOn-time50%
Air CanadaCheapest$185Average$387FlexibilityNo cancel feeOn-time67%
DeltaCheapest$255Average$336FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$261Average$375FlexibilityNo cancel feeOn-time71%
WestJetCheapest$349Average$496FlexibilityNo cancel feeOn-time60%

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