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Cheap flights from Ontario to Buenos Aires from C$ 349

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BUE
6 Apr — 13 Apr1
1 adult

Cheap flight deals from Ontario to Buenos Aires

Keep the following information in mind while searching for Ontario to Buenos Aires flight deals. Data was last updated 1 April 2025.

Round-trip from

C$ 1,071

One-way from

C$ 349

Popular in

December

Cheapest in

September

Average price

C$ 1,239
United Airlines
  • United Airlines
  • 1/7-20/8
  • 4 total stops
  • 75h 06m total
  • Ontario to Buenos Aires
Avianca
  • Avianca
  • 7/4
  • 1 total stop
  • 14h 55m total
  • Ontario to Buenos Aires
Highest demand for flights based on searches. 3% potential increase in price (C$ 71 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease (C$ 28 potential savings vs. average RT price).
Average for round-trip flights in April 2025

Find flight deals from Ontario to Buenos Aires

Cheapest flights from Ontario to Buenos Aires
Explore the most affordable flight options available from Ontario to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 April 2025.

Tue 1/75:50 p.m.YOW - EZE
2 stops37h 10mUnited Airlines
Wed 20/89:00 p.m.EZE - YOW
2 stops37h 56mUnited Airlines
Deal found 31/3C$ 1,071
Tue 2/99:45 a.m.YUL - EZE
2 stops45h 15mUnited Airlines
Wed 24/99:00 p.m.EZE - YUL
2 stops45h 54mUnited Airlines
Deal found 30/3C$ 1,076
Wed 29/109:00 a.m.YYZ - EZE
1 stop14h 15mAvianca
Tue 11/111:45 a.m.EZE - YYZ
1 stop21h 45mAvianca
Deal found 31/3C$ 1,076
Wed 29/108:15 a.m.YYZ - AEP
2 stops18h 50mMultiple Airlines
Wed 12/113:40 p.m.AEP - YYZ
2 stops21h 35mMultiple Airlines
Deal found 31/3C$ 1,084
Sun 1/611:11 a.m.YUL - AEP
2 stops26h 29mLATAM Airlines
Fri 6/65:00 p.m.AEP - YUL
2 stops21h 41mLATAM Airlines
Deal found 31/3C$ 1,085
Mon 12/511:25 p.m.YUL - EZE
1 stop14h 55mAvianca
Tue 27/51:40 a.m.EZE - YUL
1 stop21h 25mAvianca
Deal found 31/3C$ 1,085
Fri 30/55:25 p.m.YTZ - EZE
2 stops20h 05mAir Canada
Mon 9/64:35 p.m.EZE - YTZ
2 stops26h 15mAir Canada
Deal found 31/3C$ 1,087
Thu 9/109:00 a.m.YYZ - EZE
1 stop14h 55mCopa Airlines
Thu 23/1010:05 a.m.EZE - YYZ
1 stop16h 08mCopa Airlines
Deal found 30/3C$ 1,087
Sun 1/67:00 a.m.YUL - EZE
2 stops21h 55mLATAM Airlines
Fri 6/612:58 p.m.EZE - YUL
2 stops25h 43mLATAM Airlines
Deal found 31/3C$ 1,091
Tue 27/510:15 p.m.YYZ - EZE
1 stop15h 15mAir Canada
Mon 9/64:35 p.m.EZE - YYZ
2 stops31h 39mAir Canada
Deal found 31/3C$ 1,097
Tue 1/710:45 p.m.YUL - EZE
1 stop14h 45mAir Canada
Wed 6/84:35 p.m.EZE - YUL
1 stop14h 40mAir Canada
Deal found 30/3C$ 1,101
Wed 1/108:41 a.m.YUL - EZE
1 stop15h 14mCopa Airlines
Wed 15/102:13 a.m.EZE - YUL
1 stop23h 27mCopa Airlines
Deal found 30/3C$ 1,102

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Buenos Aires 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 1 April 2025.
Use the filters below to find and compare flights from Ontario to Buenos Aires that are best for you.

Fly from

Ontario

Fly to

Buenos Aires

Route

Depart

Return

Price

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Tue 1/7

5:50 p.m.-8:00 a.m.

2 stops37h 10m

Buenos Aires Ministro Pistarini

Wed 20/8

9:00 p.m.-9:56 a.m.

2 stops37h 56m

C$ 1,071

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 2/9

9:45 a.m.-8:00 a.m.

2 stops45h 15m

Buenos Aires Ministro Pistarini

Wed 24/9

9:00 p.m.-5:54 p.m.

2 stops45h 54m

C$ 1,076

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Wed 14/5

11:50 p.m.-12:10 a.m.

1 stop23h 20m

Buenos Aires Ministro Pistarini

Thu 29/5

4:45 p.m.-7:15 a.m.

1 stop15h 30m

C$ 1,081

MontrealBuenos Aires

YUL - AEP

YULAEP

Montreal Pierre Elliott Trudeau Intl

Sun 1/6

11:11 a.m.-2:40 p.m.

2 stops26h 29m

Buenos Aires Jorge Newbery

Fri 6/6

5:00 p.m.-1:41 p.m.

2 stops21h 41m

C$ 1,085

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 12/5

11:25 p.m.-3:20 p.m.

1 stop14h 55m

Buenos Aires Ministro Pistarini

Tue 27/5

1:40 a.m.-10:05 p.m.

1 stop21h 25m

C$ 1,085

TorontoBuenos Aires

YTZ - EZE

YTZEZE

Toronto Island

Fri 30/5

5:25 p.m.-2:30 p.m.

2 stops20h 05m

Buenos Aires Ministro Pistarini

Mon 9/6

4:35 p.m.-5:50 p.m.

2 stops26h 15m

C$ 1,087

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Sun 1/6

7:00 a.m.-5:55 a.m.

2 stops21h 55m

Buenos Aires Ministro Pistarini

Fri 6/6

12:58 p.m.-1:41 p.m.

2 stops25h 43m

C$ 1,091

TorontoBuenos Aires

YYZ - AEP

YYZAEP

Toronto Pearson Intl

Wed 7/5

9:05 a.m.-5:40 a.m.

1 stop19h 35m

Buenos Aires Jorge Newbery

Mon 2/6

5:45 a.m.-1:13 a.m.

2 stops20h 28m

C$ 1,092

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Mon 5/5

11:20 p.m.-2:30 p.m.

2 stops38h 10m

Buenos Aires Ministro Pistarini

Mon 12/5

4:35 p.m.-12:39 p.m.

2 stops21h 04m

C$ 1,094

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 1/7

10:45 p.m.-2:30 p.m.

1 stop14h 45m

Buenos Aires Ministro Pistarini

Wed 6/8

4:35 p.m.-6:15 a.m.

1 stop14h 40m

C$ 1,101

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/3

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires 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 Buenos Aires

What is the cheapest month to book a flight from Region of Ontario to Buenos Aires?

Currently, November is the cheapest month in which you can book a flight from Region of Ontario to Buenos Aires (average of C$ 816). Flying from Region of Ontario to Buenos Aires in December is currently the most expensive (average of C$ 1,063). 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 ON to BUE?

Find hourly flight availability from Ontario to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 April 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Buenos Aires as you normally would.

Rainfall in Buenos Aires by month

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

In terms of precipitation, rainfall in Buenos Aires ranges from 50.0 - 100.0 mm per month. January is typically the wettest month, when rainfall can reach 100.0 mm. June is typically the driest time to visit Buenos Aires when rainfall is around 50.0 mm.

Temperature in Buenos Aires by month

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

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. 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 Buenos Aires. Reviews last updated 1 April 2025.
To help decide which airline to fly from Ontario to Buenos Aires, see what other customers have to say about Delta, AeroMexico Connect and Copa Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Comfort

8.0

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very good

Crew

8.5

Comfort

8.0

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Comfort

8.0

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Comfort

8.0

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Comfort

8.0

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Comfort

8.0

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Ontario to Buenos Aires. 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 Region of Ontario to Buenos Aires one-way?

    For one-way options, check prices for Avianca. According to our data, you can fly for as low as C$ 349. Users have also found prices from C$ 511 and C$ 522 on Copa Airlines and Air Canada, respectively.

  • What are the most popular routes from Region of Ontario to Buenos Aires?

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

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

  • How can I find direct flights from Ontario to Buenos Aires?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Buenos Aires 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 Region of Ontario to Buenos Aires?

    Currently, November is the cheapest month in which you can book a flight from Region of Ontario to Buenos Aires (average of C$ 816). Flying from Region of Ontario to Buenos Aires in December is currently the most expensive (average of C$ 1,063). 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.

Top 8 airlines flying from Ontario to Buenos Aires

Discover the top 8 airlines that operate flights from Ontario to Buenos Aires. 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 629,999 searches. Data last updated 1 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapestC$ 581AverageC$ 1,263FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
ArajetCheapestC$ 648AverageC$ 909FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
LATAM AirlinesCheapestC$ 797AverageC$ 1,353FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
American AirlinesCheapestC$ 1,026AverageC$ 1,413FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
AviancaCheapestC$ 1,056AverageC$ 1,323FlexibilityNo cancel feeOn-time71%
Search Avianca flights
Air CanadaCheapestC$ 1,060AverageC$ 1,374FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 1,073AverageC$ 1,177FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 1,101AverageC$ 1,525FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Ontario to Buenos Aires?

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

Cheapflights helps you find that perfect flight to Buenos Aires from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Buenos Aires flexibly with Cheapflights today.

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

Yes! Start tracking prices for Ontario to Buenos Aires flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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