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Cheap flights from Ontario to Rosario from C$ 1,628

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ROS
21 Apr — 28 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Rosario

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Rosario
Explore the most affordable flight options available from Ontario to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 March 2026.

Wed 6/56:45 p.m.
YUL
-
ROS
2 stops34h 20m
Delta
Sun 10/57:35 a.m.
ROS
-
YUL
2 stops29h 00m
Delta
Deal found 16/3C$ 1,628
Sat 19/97:00 a.m.
YUL
-
ROS
2 stops22h 05m
Delta
Wed 23/912:10 p.m.
ROS
-
YUL
2 stops36h 46m
Delta
Deal found 20/3C$ 1,783
Sun 8/116:15 a.m.
YYZ
-
ROS
2 stops26h 55m
LATAM Airlines
Wed 11/117:35 a.m.
ROS
-
YYZ
2 stops18h 26m
LATAM Airlines
Deal found 20/3C$ 1,831
Sun 8/1112:10 p.m.
YYZ
-
ROS
2 stops21h 00m
Delta
Wed 11/1112:10 p.m.
ROS
-
YYZ
2 stops26h 59m
Delta
Deal found 19/3C$ 2,077
Thu 30/48:35 a.m.
YUL
-
ROS
1 stop18h 10m
Copa Airlines
Wed 13/55:09 a.m.
ROS
-
YUL
1 stop20h 31m
Copa Airlines
Deal found 17/3C$ 2,766
Thu 30/411:00 p.m.
YUL
-
ROS
2 stops35h 15m
Multiple Airlines
Wed 13/59:40 p.m.
ROS
-
YUL
2 stops24h 55m
Multiple Airlines
Deal found 17/3C$ 4,080

Find flight deals from Ontario to Rosario

Keep the following information in mind while searching for Ontario to Rosario flight deals. Data was last updated 22 March 2026.

Round-trip from

C$ 1,628
Delta
  • Delta
  • 6/5-10/5
  • 4 total stops
  • 63h 20m total
  • Ontario to Rosario
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Rosario 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 629,999 searches. Data last updated 22 March 2026.
Use the filters below to find and compare flights from Ontario to Rosario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealRosario

YUL - ROS

YULROS

Montreal Pierre Elliott Trudeau Intl

Wed 6/5

6:45 p.m.-6:05 a.m.

2 stops34h 20m

Rosario Fisherton

Sun 10/5

7:35 a.m.-11:35 a.m.

2 stops29h 00m

C$ 1,628
Quickest round-trip

MontrealRosario

YUL - ROS

YULROS

Montreal Pierre Elliott Trudeau Intl

Thu 30/4

8:35 a.m.-3:45 a.m.

1 stop18h 10m

Rosario Fisherton

Wed 13/5

5:09 a.m.-12:40 a.m.

1 stop20h 31m

C$ 2,766

MontrealRosario

YUL - ROS

YULROS

Montreal Pierre Elliott Trudeau Intl

Thu 30/4

11:00 p.m.-11:15 a.m.

2 stops35h 15m

Rosario Fisherton

Wed 13/5

9:40 p.m.-9:35 p.m.

2 stops24h 55m

C$ 4,080

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/3

Sorted by cheapest first

Best time to book a flight from Ontario to Rosario

Have a flexible travel schedule? Discover the best time to fly to Rosario 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 Rosario
No data available for this route at this time. Please check back soon.

Related info for your journey

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

  • What airport do you fly into for flights to Rosario from Ontario?

    For a flight from Ontario to Rosario, you will be flying into Fisherton. Rosario Fisherton (ROS) is just 10.7 km from the centre of the city.

  • How long is the flight from Region of Ontario to Rosario?

    Airlines like Delta and Copa Airlines fly from Region of Ontario to Rosario in about 18h 10m. The time it takes to get you to your destination can typically vary by up to 16h 10m. Airlines will cover a distance of 8805 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Ontario to Rosario that include hotel bookings?

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

  • How can I find direct flights from Ontario to Rosario?

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

  • Can I find deals for business class flights from Ontario to Rosario?

    Yes. Cheapflights offers flight deals from Ontario to Rosario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Cheapflights makes it easy to find Ontario to Rosario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Rosario?

Cheapflights simply makes it quick and affordable to book flights from Ontario to Rosario by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ontario to Rosario with no change fees?

Yes, we can. To see specific flights from Ontario to Rosario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Ontario to Rosario become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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