$523 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 8/26. 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.
1 adult
1 adult, Economy

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Flight Deals

Book Cheap Ontario to Argentina Plane Tickets

 
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

Tue, Oct 28 - Tue, Nov 11
United Airlines Logo
6:05 am - 6:20 amONT-EZE
20h 15m1 stop
United Airlines Logo
10:05 pm - 12:31 pmEZE-ONT
19h 26m2 stops
$1,030United Airlines
Find Deal
Sun, Nov 9 - Wed, Nov 19
United Airlines Logo
1:29 pm - 7:20 amONT-EZE
36h 51m2 stops
United Airlines Logo
10:05 pm - 12:37 pmEZE-ONT
19h 32m2 stops
$1,048United Airlines
Find Deal
Sat, Oct 25 - Mon, Nov 3
United Airlines Logo
9:36 am - 8:20 amONT-EZE
18h 44m2 stops
United Airlines Logo
10:05 pm - 12:31 pmEZE-ONT
19h 26m2 stops
$1,070United Airlines
Find Deal
Tue, Oct 28 - Tue, Nov 11
Avianca Logo
11:30 pm - 1:35 amONT-EZE
22h 05m2 stops
Avianca Logo
5:50 am - 8:55 pmEZE-ONT
20h 05m3 stops
$1,136Avianca
Find Deal
Tue, Oct 28 - Tue, Nov 11
Avianca Logo
11:30 pm - 4:40 amONT-EZE
25h 10m3 stops
Avianca Logo
5:50 am - 8:55 pmEZE-ONT
20h 05m3 stops
$1,144Avianca
Find Deal
Fri, Nov 14 - Mon, Dec 1
LATAM Airlines Logo
10:59 pm - 2:55 pmONT-EZE
34h 56m2 stops
LATAM Airlines Logo
11:00 am - 11:24 amEZE-ONT
29h 24m2 stops
$1,240LATAM Airlines
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Thu, Jan 15 - Sat, Jan 31
American Airlines Logo
10:57 am - 8:30 amONT-EZE
16h 33m1 stop
American Airlines Logo
11:59 pm - 5:53 pmEZE-ONT
22h 54m2 stops
$1,260American Airlines
Find Deal
Sun, Nov 9 - Tue, Nov 18
LATAM Airlines Logo
10:59 pm - 6:20 amONT-EZE
26h 21m2 stops
LATAM Airlines Logo
4:05 am - 11:24 amEZE-ONT
36h 19m2 stops
$1,276LATAM Airlines
Find Deal
Wed, Feb 4 - Fri, Feb 20
American Airlines Logo
10:57 am - 8:20 amONT-EZE
16h 23m1 stop
American Airlines Logo
10:25 pm - 9:31 amEZE-ONT
16h 06m1 stop
$1,298American Airlines
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Thu, Dec 4 - Fri, Dec 19
Delta Logo
10:59 pm - 12:00 pmONT-MDZ
32h 01m2 stops
Delta Logo
7:00 pm - 7:38 pmMDZ-ONT
29h 38m2 stops
$19,971Delta
Find Deal
Booking Insights

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 United Airlines ($1,030) and Avianca ($1,136).

Good to know

Cheapest flight$523
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.

Reviews of the top airline 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 8925 reviews
8.1Crew
7.1Entertainment
7.3Comfort
6.6Food
7.7Boarding
Airline reviews

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

10.0 ExcellentWendy, Aug 2025SFO - YYC
Read more United Airlines reviews

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Boarded plane and then delayed 1.5 hours while on the plane

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

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

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