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Cheap flights from Ontario to Rosario from C$ 1,278

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 16/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ROS
6 Jun — 13 Jun1
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 7 May 2026.

Fri 16/108:35 a.m.
YUL
-
ROS
1 stop18h 12m
Copa Airlines
Sat 24/105:09 a.m.
ROS
-
YUL
1 stop20h 31m
Copa Airlines
Deal found 5/5C$ 1,278
Sat 28/117:35 a.m.
YUL
-
ROS
1 stop18h 18m
Copa Airlines
Sat 27/25:20 a.m.
ROS
-
YUL
1 stop20h 23m
Copa Airlines
Deal found 3/5C$ 1,290
Fri 16/107:00 a.m.
YUL
-
ROS
2 stops27h 15m
Multiple Airlines
Sat 24/108:20 p.m.
ROS
-
YUL
2 stops29h 00m
Multiple Airlines
Deal found 5/5C$ 1,358
Sat 24/106:10 p.m.
YYZ
-
ROS
2 stops40h 00m
Delta
Wed 28/107:35 a.m.
ROS
-
YYZ
2 stops34h 16m
Delta
Deal found 3/5C$ 1,508
Sat 28/112:10 p.m.
YUL
-
ROS
3 stops29h 35m
Multiple Airlines
Sat 27/29:10 a.m.
ROS
-
YUL
3 stops35h 23m
Multiple Airlines
Deal found 3/5C$ 1,624
Tue 4/812:15 p.m.
YYZ
-
ROS
2 stops22h 25m
Multiple Airlines
Sun 16/87:35 a.m.
ROS
-
YYZ
2 stops60h 00m
Multiple Airlines
Deal found 2/5C$ 1,750
Sun 16/87:00 a.m.
YUL
-
ROS
2 stops46h 05m
Delta
Wed 19/87:35 a.m.
ROS
-
YUL
2 stops29h 04m
Delta
Deal found 3/5C$ 2,311
Thu 29/107:00 a.m.
YUL
-
ROS
2 stops27h 10m
Delta
Mon 2/1112:10 p.m.
ROS
-
YUL
2 stops37h 41m
Delta
Deal found 5/5C$ 2,551

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 7 May 2026.

Round-trip from

C$ 1,278
Copa Airlines
  • Copa Airlines
  • 16/10-24/10
  • 2 total stops
  • 38h 43m 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 7 May 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
Quickest round-trip

MontrealRosario

YUL - ROS

YULROS

Montreal Pierre Elliott Trudeau Intl

Fri 16/10

8:35 a.m.-3:47 a.m.

1 stop18h 12m

Rosario Fisherton

Sat 24/10

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

1 stop20h 31m

C$ 1,278

MontrealRosario

YUL - ROS

YULROS

Montreal Pierre Elliott Trudeau Intl

Fri 16/10

7:00 a.m.-11:15 a.m.

2 stops27h 15m

Rosario Fisherton

Sat 24/10

8:20 p.m.-12:20 a.m.

2 stops29h 00m

C$ 1,358

TorontoRosario

YYZ - ROS

YYZROS

Toronto Pearson Intl

Sat 24/10

6:10 p.m.-11:10 a.m.

2 stops40h 00m

Rosario Fisherton

Wed 28/10

7:35 a.m.-4:51 p.m.

2 stops34h 16m

C$ 1,508

TorontoRosario

YYZ - ROS

YYZROS

Toronto Pearson Intl

Tue 4/8

12:15 p.m.-11:40 a.m.

2 stops22h 25m

Rosario Fisherton

Sun 16/8

7:35 a.m.-6:35 p.m.

2 stops60h 00m

C$ 1,750

MontrealRosario

YUL - ROS

YULROS

Montreal Pierre Elliott Trudeau Intl

Sun 16/8

7:00 a.m.-6:05 a.m.

2 stops46h 05m

Rosario Fisherton

Wed 19/8

7:35 a.m.-11:39 a.m.

2 stops29h 04m

C$ 2,311

MontrealRosario

YUL - ROS

YULROS

Montreal Pierre Elliott Trudeau Intl

Thu 29/10

7:00 a.m.-11:10 a.m.

2 stops27h 10m

Rosario Fisherton

Mon 2/11

12:10 p.m.-11:51 p.m.

2 stops37h 41m

C$ 2,551

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/5

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 Copa Airlines and Delta fly from Region of Ontario to Rosario in about 18h 12m. The time it takes to get you to your destination can typically vary by up to 21h 48m. 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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