$345 Find Cheap Flights from Ontario to Argentina

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Argentina departing on 6/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flights from Ontario to Argentina (ONT-AR0)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Argentina that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Argentina

Sat, May 31 - Sat, Jun 7
Avianca Logo
11:25 pm - 4:50 amONT-EZE
25h 25m3 stops
Avianca Logo
6:40 am - 9:55 pmEZE-ONT
19h 15m3 stops
$883Avianca
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Thu, Aug 7 - Sun, Aug 17
Avianca Logo
11:25 pm - 12:10 amONT-EZE
20h 45m2 stops
Avianca Logo
5:55 am - 9:55 pmEZE-ONT
20h 00m3 stops
$906Avianca
Find Deal
Tue, Jun 17 - Mon, Jun 23
Avianca Logo
11:25 pm - 1:25 amONT-EZE
22h 00m3 stops
Avianca Logo
1:40 am - 9:55 pmEZE-ONT
24h 15m2 stops
$913Avianca
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Tue, Jun 17 - Tue, Jun 24
Avianca Logo
11:25 pm - 1:25 amONT-EZE
22h 00m3 stops
Avianca Logo
6:50 am - 9:55 pmEZE-ONT
19h 05m2 stops
$958Avianca
Find Deal
Tue, Jun 17 - Mon, Jun 23
Avianca Logo
11:25 pm - 12:10 amONT-EZE
20h 45m2 stops
Avianca Logo
1:40 am - 9:55 pmEZE-ONT
24h 15m2 stops
$978Avianca
Find Deal
Mon, Jul 7 - Wed, Aug 6
United Airlines Logo
6:00 am - 8:00 amONT-EZE
22h 00m1 stop
United Airlines Logo
9:00 pm - 10:52 pmEZE-ONT
29h 52m2 stops
$1,025United Airlines
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Mon, Sep 15 - Wed, Oct 1
United Airlines Logo
6:00 am - 8:00 amONT-EZE
22h 00m2 stops
United Airlines Logo
9:00 pm - 12:32 pmEZE-ONT
19h 32m2 stops
$1,030United Airlines
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Sat, Jun 28 - Sat, Jul 5
 Logo
1:09 am - 3:25 amONT-EZE
22h 16m3 stops
 Logo
1:40 am - 9:55 pmEZE-ONT
24h 15m2 stops
$1,430
Find Deal
Sun, Jun 15 - Mon, Jun 16
 Logo
6:00 am - 8:00 amONT-EZE
22h 00m1 stop
 Logo
1:40 am - 9:55 pmEZE-ONT
24h 15m2 stops
$1,433
Find Deal
Sun, Jun 29 - Sun, Jul 6
Delta Logo
7:05 am - 9:45 amONT-EZE
22h 40m1 stop
Delta Logo
8:10 pm - 7:20 pmEZE-ONT
27h 10m1 stop
$1,694Delta
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KAYAK's insights & trends for Ontario to Argentina flights

Get data-powered insights and trends into flights from Ontario to Argentina to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Ontario to Argentina?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Argentina were found on Avianca ($883) and United Airlines ($1,025).


Good to know

Cheapest flight$345
Flight from Ontario to Buenos Aires

FAQs - booking Argentina flights

  • How does KAYAK find such low prices on flights from Ontario to Argentina?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Argentina.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Argentina?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Argentina is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Argentina?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Ontario to Argentina with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Argentina?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ontario to Argentina up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Argentina?

    The cheapest time of day to fly to Argentina is generally at night, when round-trip flights cost $933 on average. Morning departures are around 10% cheaper than evening flights, on average. The most expensive time of day to fly to Argentina is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,573.

Top airlines flying from Ontario to Argentina

Need help choosing which airline to fly with from Ontario to Argentina? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8731 reviews
7.7Boarding
7.3Comfort
7.1Entertainment
8.1Crew
6.6Food
Airline reviews

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

8.0 ExcellentWilliam Drew, May 2025SFO - HNL
Read more United Airlines reviews

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

The first flight was better in terms of the aircraft.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Seats were comfortable. It’s was so cold and very uncomfortable. I paid 2000 miles for wifi service that was choppy the whole flight. Would like to be reimbursed for my miles Food was so disappointing. Three cold and terrible meals for $3000 round trip. This needs to be better.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Eventless. It was a good flight and good crew. Can’t complaint.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

British Airways staff are very polite and willing to help.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

Worst seats I’ve ever had !!! The seats were very narrow and uncomfortable and misaligned with the seats in front of mine leading to bottom of the seat in front of mine pressing on my legs for 15.5 hours !

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

The flight was quick and to the point. The crew just did their job w/o excessive talking and everything was just perfect.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

Everything you need to know for your flight from Ontario to Argentina

Information on your arrival and departure airports

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