HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$81+ Cheap flights from Reagan-National (DCA) 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — YYZ
mai 4 — mai 111
dim. 5/4
dim. 5/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to Ontario 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.

Cheap flight deals from Reagan-National to Ontario

Keep the following information in mind while searching for Reagan-National to Ontario flight deals. Data was last updated avril 29, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$212
(American Airlines)

One-way from

$81
(American Airlines)

Popular in

August

Cheapest in

March

Average price

$286

Good round-trip deal

$274 or less

Good one-way deal

$109 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. Reagan-National to Ontario
Search Deals
One-way flight from Washington, D.C. Reagan-National to Ontario
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Reagan-National to Ontario.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Reagan-National to Ontario.
Search Deals

Find flight deals from Reagan-National to Ontario

Cheapest flights from Reagan-National to Ontario
Explore the most affordable flight options available from Reagan-National to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on avril 29, 2025.

This American Airlines deal was found by Cheapflights users on 4/28. 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.
mar. 6/310:00 amDCA - YYZ
Nonstop1h 55mAmerican Airlines
mar. 6/35:29 pmYYZ - DCA
Nonstop1h 40mAmerican Airlines
Deal found 4/28$212
This Air Canada deal was found by Cheapflights users on 4/28. 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.
mer. 6/256:59 amDCA - YYZ
Nonstop1h 34mAir Canada
mer. 6/2511:00 amYYZ - DCA
1 stop4h 48mAir Canada
Deal found 4/28$216
This Air Canada deal was found by Cheapflights users on 4/28. 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.
mar. 6/1012:55 pmDCA - YTZ
1 stop5h 42mAir Canada
mar. 6/173:25 pmYTZ - DCA
1 stop6h 28mAir Canada
Deal found 4/28$216
This United Airlines deal was found by Cheapflights users on 4/29. 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.
mar. 6/39:40 amDCA - YYZ
1 stop4h 07mUnited Airlines
mar. 6/34:30 pmYYZ - DCA
Nonstop1h 33mUnited Airlines
Deal found 4/29$225
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/171:40 pmDCA - YYZ
1 stop4h 19mDelta
ven. 6/206:49 pmYYZ - DCA
1 stop4h 10mDelta
Deal found 4/28$237
This United deal was found by Cheapflights users on 4/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 6/46:59 amDCA - YYZ
Nonstop1h 33mMultiple Airlines
lun. 6/912:30 amYYZ - DCA
1 stop11h 31mMultiple Airlines
Deal found 4/28$273
This Booking.com deal was found by Cheapflights users on 4/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 5/299:40 amDCA - YUL
Nonstop1h 48mAir Canada
lun. 6/28:30 amYUL - DCA
Nonstop1h 49mAir Canada
Deal found 4/28$275
This Trip.com deal was found by Cheapflights users on 4/28. 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.
sam. 5/245:10 pmDCA - YYZ
1 stop5h 48mWestJet
dim. 5/2512:15 pmYYZ - DCA
1 stop5h 12mWestJet
Deal found 4/28$302
This United Airlines deal was found by Cheapflights users on 4/29. 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.
dim. 6/19:40 amDCA - YUL
Nonstop1h 48mUnited Airlines
mer. 6/48:30 amYUL - DCA
Nonstop1h 49mUnited Airlines
Deal found 4/29$314
This United deal was found by Cheapflights users on 4/27. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 5/259:40 amDCA - YUL
Nonstop1h 48mMultiple Airlines
jeu. 5/298:15 amYUL - DCA
1 stop3h 46mMultiple Airlines
Deal found 4/27$320
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/86:00 amDCA - YUL
1 stop5h 41mDelta
ven. 7/115:00 pmYUL - DCA
1 stop5h 59mDelta
Deal found 4/28$342
This Kissandfly.com deal was found by Cheapflights users on 4/28. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 5/242:54 pmDCA - YYZ
Nonstop1h 50mBritish Airways
dim. 5/2511:05 amYYZ - DCA
Nonstop1h 35mBritish Airways
Deal found 4/28$368

Cheapflights Fare Finder

Customize your flight search to find flights from Reagan-National 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 avril 29, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Ontario that are best for you.

Fly from

Reagan-National

Fly to

Ontario

Route

Depart

Return

Price

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

mar. 6/3

10:00 am-11:55 am

Nonstop1h 55m

Toronto Pearson Intl

mer. 6/4

11:05 am-12:40 pm

Nonstop1h 35m

$212

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

mer. 6/25

6:59 am-8:33 am

Nonstop1h 34m

Toronto Pearson Intl

mer. 6/25

11:00 am-3:48 pm

1 stop4h 48m

$216

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

mar. 6/10

12:55 pm-6:37 pm

1 stop5h 42m

Toronto Island

mar. 6/17

3:25 pm-9:53 pm

1 stop6h 28m

$216

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

mar. 6/3

9:40 am-1:47 pm

1 stop4h 07m

Toronto Pearson Intl

mar. 6/3

4:30 pm-6:03 pm

Nonstop1h 33m

$225

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

mar. 6/17

1:40 pm-5:59 pm

1 stop4h 19m

Toronto Pearson Intl

mer. 6/18

6:14 pm-11:33 pm

1 stop5h 19m

$237

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

sam. 5/24

8:40 pm-10:13 pm

Nonstop1h 33m

Toronto Pearson Intl

lun. 5/26

7:20 am-8:53 am

Nonstop1h 33m

$266

Washington, D.C.Montreal

DCA - YUL

DCAYUL

Washington, D.C. Reagan-National

jeu. 5/29

9:40 am-11:28 am

Nonstop1h 48m

Montreal Pierre Elliott Trudeau Intl

lun. 6/2

8:30 am-10:19 am

Nonstop1h 49m

$275

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

sam. 5/24

5:10 pm-10:58 pm

1 stop5h 48m

Toronto Pearson Intl

dim. 5/25

12:15 pm-5:27 pm

1 stop5h 12m

$302

Washington, D.C.Montreal

DCA - YUL

DCAYUL

Washington, D.C. Reagan-National

dim. 6/1

4:35 pm-6:25 pm

Nonstop1h 50m

Montreal Pierre Elliott Trudeau Intl

mar. 6/3

8:00 pm-9:53 pm

Nonstop1h 53m

$314

Washington, D.C.Montreal

DCA - YUL

DCAYUL

Washington, D.C. Reagan-National

dim. 5/25

9:40 am-11:28 am

Nonstop1h 48m

Montreal Pierre Elliott Trudeau Intl

jeu. 5/29

8:15 am-12:01 pm

1 stop3h 46m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 50 results
1
2
3
...
5

Best time to book a flight from Reagan-National to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Reagan-National 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. Reagan-National Airport to Ontario

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Region of Ontario (average of $243). Flying from Washington, D.C. Reagan-National Airport to Region of Ontario in July is currently the most expensive (average of $359). 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 DCA to ON?

Find hourly flight availability from Reagan-National 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 avril 29, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to Region of Ontario as you normally would.

Weekly flight availability from Washington, D.C. Reagan-National Airport to Region of Ontario

Explore weekly flight availability from Reagan-National 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 avril 29, 2025.

The most flights from DCA to CAON are scheduled on a Monday (10 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 avril 29, 2025.
Peruse reviews from past customers who have flown with Porter Airlines, Delta and United Airlines from Washington, D.C. to Ontario to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
285 reviews

Crew

8.8

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Porter Airlines
8.0
Very good
285 reviews
Porter Airlines
8.0
Very good
285 reviews

Crew

8.8

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Delta
8.0
Very good
7,929 reviews
Porter Airlines
8.0
Very good
285 reviews

Crew

8.8

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
United Airlines
7.4
Good
8,696 reviews
Porter Airlines
8.0
Very good
285 reviews

Crew

8.8

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
8.0
Very good
285 reviews

Crew

8.8

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
WestJet
7.2
Good
2,826 reviews
Porter Airlines
8.0
Very good
285 reviews

Crew

8.8

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Region of Ontario one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $81. However, be on the lookout for offers from United Airlines and Air Canada, as they are both options that can get you from Washington, D.C. Reagan-National Airport to Region of Ontario for a low price.

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

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

  • What are the most reliable airlines from Washington, D.C. Reagan-National Airport to Region of Ontario?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Reagan-National Airport to Region of Ontario on time: American Airlines (75%), PSA Airlines (75%), Air Canada (68%).

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

    Looking for the cheapest flight from Washington, D.C. Reagan-National Airport to Region of Ontario? While on average our users pay $794, our data indicates the cheapest price to be $71. The most popular route (Washington, D.C. Reagan-National - Toronto Pearson Intl), is priced around $217.

  • Can I find deals for flights from Reagan-National to Ontario that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Ontario.

  • Can I find deals for business class flights from Reagan-National to Ontario?

    Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Region of Ontario (average of $243). Flying from Washington, D.C. Reagan-National Airport to Region of Ontario in July is currently the most expensive (average of $359). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Vancouver Intl flights
Dulles Intl to Pearson Intl flights
Reagan-National to Pearson Intl flights
Dulles Intl to Calgary flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Dulles Intl to Toronto Island flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Baltimore to Vancouver Intl flights
Baltimore to Pearson Intl flights
Reagan-National to Vancouver Intl flights
Reagan-National to Calgary flights
Baltimore to Calgary flights
Baltimore to Pierre Elliott Trudeau Intl flights
Reagan-National to Toronto Island flights
Dulles Intl to Halifax flights
Dulles Intl to Ottawa flights
Reagan-National to Halifax flights
Dulles Intl to Abbotsford flights
Dulles Intl to Québec City flights
Baltimore to Toronto Island flights
Reagan-National to Québec City flights
Baltimore to Halifax flights
Baltimore to Edmonton flights
Dulles Intl to Edmonton flights
Reagan-National to Ottawa flights
Reagan-National to Edmonton flights
Dulles Intl to Winnipeg flights
Dulles Intl to St. John's flights
Baltimore to Québec City flights
Baltimore to Ottawa flights
Reagan-National to St. John's flights
Baltimore to Winnipeg flights
Baltimore to St. John's flights
Reagan-National to Winnipeg flights
Dulles Intl to Charlottetown flights
Baltimore to Abbotsford flights
Dulles Intl to Victoria flights
Dulles Intl to Kelowna flights
Dulles Intl to Moncton flights
Reagan-National to Saskatoon flights
Dulles Intl to Hamilton flights
Baltimore to Saskatoon flights
Dulles Intl to Saskatoon flights
Reagan-National to Charlottetown flights
Baltimore to Kelowna flights
Reagan-National to Kelowna flights
Dulles Intl to Thunder Bay flights
Dulles Intl to St John flights
Reagan-National to Victoria flights
Baltimore to Victoria flights

Top 4 airlines flying from Reagan-National to Ontario

Discover the top 4 airlines that operate flights from Reagan-National 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 avril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$103Average$388FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$116Average$355FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$127Average$401FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$145Average$344FlexibilityNo cancel feeOn-time71%

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.