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$87+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — YYZ
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$189
(Mytrip)

One-way from

$87
(lol.travel)

Popular in

February

Cheapest in

April

Average price

$265

Good round-trip deal

$288 or less

Good one-way deal

$126 or less
From Washington, D.C. Reagan-National to Ontario
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One-way flight from Washington, D.C. Reagan-National to Ontario
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Highest demand for flights based on searches. 2% potential increase in price ($5 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Washington, D.C. Reagan-National to Ontario.
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Price to beat on a one-way flight from Washington, D.C. Reagan-National to Ontario.
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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 June 12, 2025.

This Gotogate deal was found by Cheapflights users on 6/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/196:40 pmDCA - YYZ
Nonstop1h 34mAir Canada
Mon 7/216:10 pmYYZ - DCA
Nonstop1h 32mAir Canada
Deal found 6/12$188
This Air Canada deal was found by Cheapflights users on 6/11. 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 7/246:00 amDCA - YTZ
1 stop5h 46mAir Canada
Sat 7/263:25 pmYTZ - DCA
1 stop6h 23mAir Canada
Deal found 6/11$202
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 6/266:00 amDCA - YYZ
1 stop3h 49mAmerican Airlines
Thu 7/37:35 amYYZ - DCA
1 stop3h 58mAmerican Airlines
Deal found 6/11$223
This Delta deal was found by Cheapflights users on 6/11. 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.
Sat 7/199:39 amDCA - YYZ
1 stop5h 06mDelta
Sat 7/266:04 amYYZ - DCA
1 stop4h 10mDelta
Deal found 6/11$234
This Flightnetwork deal was found by Cheapflights users on 6/12. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/278:40 pmDCA - YUL
1 stop5h 11mAir Canada
Sun 8/38:15 amYUL - DCA
1 stop3h 48mAir Canada
Deal found 6/12$260
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/229:05 amDCA - YYZ
1 stop4h 42mUnited Airlines
Tue 7/225:15 pmYYZ - DCA
1 stop5h 27mUnited Airlines
Deal found 6/11$276
This Gotogate deal was found by Cheapflights users on 6/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2512:55 pmDCA - YOW
Nonstop1h 32mAir Canada
Fri 8/110:25 amYOW - DCA
Nonstop1h 38mAir Canada
Deal found 6/10$299
This Delta deal was found by Cheapflights users on 6/10. 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.
Sat 6/2112:10 pmDCA - YUL
2 stops11h 03mDelta
Wed 6/257:00 amYUL - DCA
1 stop10h 20mDelta
Deal found 6/10$307
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 7/2510:20 pmDCA - YUL
1 stop11h 30mAmerican Airlines
Sun 7/277:14 amYUL - DCA
1 stop5h 41mAmerican Airlines
Deal found 6/11$329
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 7/118:30 amDCA - YUL
1 stop8h 56mUnited Airlines
Wed 7/1611:23 amYUL - DCA
1 stop5h 05mUnited Airlines
Deal found 6/10$342
This United deal was found by Cheapflights users on 6/11. 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.
Wed 8/276:00 amDCA - YUL
Nonstop1h 45mMultiple Airlines
Wed 9/38:15 amYUL - DCA
1 stop3h 53mMultiple Airlines
Deal found 6/11$361
This Booking.com deal was found by Cheapflights users on 6/11. 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.
Sat 7/2611:00 amDCA - YQT
1 stop4h 43mAir Canada
Sat 8/211:10 amYQT - DCA
1 stop6h 52mAir Canada
Deal found 6/11$423

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 June 12, 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

Sat 7/19

6:40 pm-8:14 pm

Nonstop1h 34m

Toronto Pearson Intl

Mon 7/21

6:10 pm-7:42 pm

Nonstop1h 32m

$188

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Thu 7/24

6:00 am-11:46 am

1 stop5h 46m

Toronto Island

Sat 7/26

3:25 pm-9:48 pm

1 stop6h 23m

$202

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Thu 6/26

6:00 am-9:49 am

1 stop3h 49m

Toronto Pearson Intl

Thu 7/3

7:35 am-11:33 am

1 stop3h 58m

$223

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Sat 7/19

9:39 am-2:45 pm

1 stop5h 06m

Toronto Pearson Intl

Thu 7/24

6:04 am-10:14 am

1 stop4h 10m

$234

Washington, D.C.Montreal

DCA - YUL

DCAYUL

Washington, D.C. Reagan-National

Sun 7/27

8:40 pm-1:51 am

1 stop5h 11m

Montreal Pierre Elliott Trudeau Intl

Sun 8/3

8:15 am-12:03 pm

1 stop3h 48m

$260

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Tue 7/22

9:05 am-1:47 pm

1 stop4h 42m

Toronto Pearson Intl

Tue 7/22

5:15 pm-10:42 pm

1 stop5h 27m

$276

Washington, D.C.Montreal

DCA - YUL

DCAYUL

Washington, D.C. Reagan-National

Tue 6/24

6:00 am-11:39 am

1 stop5h 39m

Montreal Pierre Elliott Trudeau Intl

Wed 6/25

12:47 pm-6:59 pm

1 stop6h 12m

$297

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 7/25

12:55 pm-2:27 pm

Nonstop1h 32m

Ottawa

Fri 8/1

10:25 am-12:03 pm

Nonstop1h 38m

$299

Washington, D.C.Montreal

DCA - YUL

DCAYUL

Washington, D.C. Reagan-National

Fri 7/11

7:00 am-1:09 pm

1 stop6h 09m

Montreal Pierre Elliott Trudeau Intl

Tue 7/15

6:15 am-11:59 am

1 stop5h 44m

$342

Washington, D.C.Montreal

DCA - YUL

DCAYUL

Washington, D.C. Reagan-National

Fri 7/25

10:20 pm-9:50 am

1 stop11h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 7/27

7:47 am-9:29 pm

1 stop13h 42m

$356

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 46 results
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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 $353). 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 June 12, 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 June 12, 2025.

The most flights from DCA to CAON are scheduled on a Monday (10 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (6 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 June 12, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines and American 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.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,531 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 Air Canada, with whom users have recently found tickets for as low as $87. However, be on the lookout for offers from Delta and American Airlines, 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: United Airlines (81%), Air Canada (80%), Jazz (80%).

  • 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 $1,867, our data indicates the cheapest price to be $91. The most popular route (Washington, D.C. Reagan-National - Toronto Pearson Intl), is priced around $197.

  • 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 $353). 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.

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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 Pearson Intl flights
Reagan-National to Pearson Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Dulles Intl to Vancouver Intl flights
Dulles Intl to Calgary flights
Dulles Intl to Toronto Island flights
Baltimore to Pearson Intl flights
Baltimore to Vancouver Intl flights
Reagan-National to Vancouver Intl flights
Baltimore to Calgary flights
Reagan-National to Calgary flights
Baltimore to Pierre Elliott Trudeau Intl flights
Baltimore to Toronto Island flights
Dulles Intl to Québec City flights
Reagan-National to Toronto Island flights
Dulles Intl to Ottawa flights
Reagan-National to Ottawa flights
Dulles Intl to Halifax flights
Reagan-National to Québec City flights
Reagan-National to Halifax flights
Dulles Intl to Edmonton flights
Dulles Intl to Abbotsford flights
Baltimore to Halifax flights
Baltimore to Québec City flights
Reagan-National to Edmonton flights
Dulles Intl to Winnipeg flights
Baltimore to Edmonton flights
Baltimore to Ottawa flights
Dulles Intl to Hamilton flights
Dulles Intl to Saskatoon flights
Baltimore to Winnipeg flights
Dulles Intl to St. John's flights
Baltimore to Abbotsford flights
Baltimore to Saskatoon flights
Reagan-National to Charlottetown flights
Reagan-National to Saskatoon flights
Dulles Intl to Charlottetown flights
Reagan-National to St. John's flights
Reagan-National to Winnipeg flights
Dulles Intl to Victoria flights
Baltimore to St. John's flights
Dulles Intl to Kamloops flights
Dulles Intl to Deer Lake flights
Dulles Intl to Kelowna flights
Dulles Intl to Sault Ste Marie flights
Reagan-National to Abbotsford flights
Reagan-National to Kelowna flights
Baltimore to Charlottetown flights
Baltimore to Kelowna 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$103Average$399FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$115Average$361FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$127Average$387FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$144Average$346FlexibilityNo cancel feeOn-time71%

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