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$103+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YYZ
Apr 16 — Apr 231
Thu 4/16
Thu 4/23
1 adult, Economy
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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 March 17, 2026.

This Vliegwinkel deal was found by Cheapflights users on 3/16. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:40 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Mon 4/139:25 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 3/16$217
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
Fri 4/176:00 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Mon 4/209:25 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 3/16$222
This Trip.com deal was found by Cheapflights users on 3/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:40 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Sat 4/1111:30 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 3/16$223
This Trip.com deal was found by Cheapflights users on 3/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:40 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Mon 4/209:25 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 3/16$226
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
Fri 4/176:00 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Tue 4/219:25 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 3/16$227
This Trip.com deal was found by Cheapflights users on 3/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:40 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Wed 4/159:25 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 3/16$228
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/1511:40 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Tue 4/219:25 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 3/16$229
This FlightHub deal was found by Cheapflights users on 3/16. 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.
Thu 4/911:40 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Thu 4/169:25 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 3/16$230
This Mytrip deal was found by Cheapflights users on 3/16. 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.
Thu 4/1612:55 pm
DCA
-
YTZ
1 stop5h 27m
Air Canada
Tue 4/217:55 am
YTZ
-
DCA
1 stop4h 06m
Air Canada
Deal found 3/16$238
This Mytrip deal was found by Cheapflights users on 3/16. 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.
Fri 4/312:55 pm
DCA
-
YTZ
1 stop5h 27m
Air Canada
Tue 4/77:55 am
YTZ
-
DCA
1 stop4h 06m
Air Canada
Deal found 3/16$247
This Mytrip deal was found by Cheapflights users on 3/16. 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.
Thu 4/166:00 am
DCA
-
YYZ
1 stop5h 38m
Air Canada
Tue 4/216:20 pm
YYZ
-
DCA
Nonstop1h 33m
Air Canada
Deal found 3/16$250
This Mytrip deal was found by Cheapflights users on 3/16. 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.
Thu 4/3012:55 pm
DCA
-
YTZ
1 stop5h 27m
Air Canada
Thu 5/77:50 am
YTZ
-
DCA
1 stop4h 11m
Air Canada
Deal found 3/16$252

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 March 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$217
(Vliegwinkel)

One-way from

$103
(FlightHub)

Popular in

March

Cheapest in

June

Average price

$324

Good round-trip deal

$228 or less

Good one-way deal

$112 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Toronto (YTO) flights.
Search Deals
From Washington, D.C. (WAS) to Ontario
Search Deals
One-way flight from Washington, D.C. (WAS) to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Ontario.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Ontario.
Search Deals

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 March 17, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 5/8

4:05 pm-5:35 pm

Nonstop1h 30m

Toronto Island

Tue 5/12

9:15 am-10:46 am

Nonstop1h 31m

$283

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 5/4

11:30 am-1:00 pm

Nonstop1h 30m

Toronto Island

Thu 5/7

9:15 am-10:46 am

Nonstop1h 31m

$291

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Tue 4/7

11:00 am-3:52 pm

1 stop4h 52m

Toronto Island

Sun 4/12

7:55 am-12:01 pm

1 stop4h 06m

$292

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 5/4

9:45 am-3:52 pm

1 stop6h 07m

Toronto Island

Thu 5/7

8:30 am-3:03 pm

1 stop6h 33m

$317

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Mon 5/4

6:00 am-1:17 pm

2 stops7h 17m

Toronto Island

Wed 5/6

7:50 am-12:01 pm

1 stop4h 11m

$319

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Tue 4/28

11:00 am-3:52 pm

1 stop4h 52m

Toronto Island

Tue 5/5

7:50 am-12:01 pm

1 stop4h 11m

$322

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 6/1

4:05 pm-5:35 pm

Nonstop1h 30m

Toronto Island

Wed 6/3

1:50 pm-3:21 pm

Nonstop1h 31m

$323
Quickest round-trip

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 4/23

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Mon 4/27

9:25 am-10:54 am

Nonstop1h 29m

$323

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Tue 5/5

12:45 pm-6:22 pm

1 stop5h 37m

Toronto Island

Thu 5/14

7:50 am-12:01 pm

1 stop4h 11m

$323

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 4/23

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Sun 4/26

3:45 pm-5:14 pm

Nonstop1h 29m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/16

Showing 1-10 of 60 resultsSorted by cheapest first
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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, September is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $105). Flying from Washington, D.C. to Region of Ontario in February is currently the most expensive (average of $179). 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 March 17, 2026.

It’s optimal to fly from Washington, D.C. to Region of Ontario at noon. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight in the morning.

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 November 25, 2025.

Travelers seeking maximum savings on their Washington, D.C. to Region of Ontario flight should consider departing on Sunday mornings when fares are most often at their lowest. Sunday 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 March 17, 2026.

The most flights from WAS to CAON are scheduled on a Monday (30 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (28 on average).

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

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 March 17, 2026.
Peruse reviews from past customers who have flown with Porter Airlines,Air Transat, andUnited 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.
Porter Airlines
8.0
Very good
424 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
424 reviews
Porter Airlines
8.0
Very good
424 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Transat
7.7
Good
521 reviews
Porter Airlines
8.0
Very good
424 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
United Airlines
7.4
Good
9,431 reviews
Porter Airlines
8.0
Very good
424 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
American Airlines
7.1
Good
11,468 reviews
Porter Airlines
8.0
Very good
424 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Canada
7.1
Good
10,811 reviews
Porter Airlines
8.0
Very good
424 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

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 30m. Porter Airlines provides one of the quickest options available for as low as $283. 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 Air Transat, with prices starting from $80 and $95, respectively.

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

    The most popular flight routes from Washington, D.C. to Region of Ontario are Washington, D.C. Reagan-National - Toronto Pearson Intl, Washington, D.C. Dulles Intl - Toronto Pearson Intl and Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl.

  • 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 (77%), Copa Airlines (72%), Republic Airways( 72%).

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

    On average you can expect to pay $1,239 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is $123 while the most popular route, (Washington, D.C. Reagan-National - Toronto Pearson Intl) is currently priced at $271.

  • 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, September is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $105). Flying from Washington, D.C. to Region of Ontario in February is currently the most expensive (average of $179). 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

Browse thousands of different options on Cheapflights for your next trip

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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 March 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$54Average$361FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$108Average$404FlexibilityNo cancel feeOn-time69%
DeltaCheapest$138Average$306FlexibilityNo cancel feeOn-timeN/A
Air TransatCheapest$176Average$245FlexibilityNo cancel feeOn-time50%
Air CanadaCheapest$185Average$383FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$263Average$366FlexibilityNo cancel feeOn-time71%
WestJetCheapest$349Average$532FlexibilityNo cancel feeOn-time60%

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