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Find cheap flights from Ontario to Buenos Aires from $338

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 Buenos Aires departing on 5/7. 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
0 bags
Sat 4/27
Sat 5/4

Search hundreds of travel sites at once for deals on flights to Buenos Aires

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Buenos Aires, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Buenos Aires, as well as popular online travel agencies
In the last 7 days travelers have searched 46,342,885 times on KAYAK, and here is why:

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Cheap flight deals from Ontario to Buenos Aires

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Buenos Aires 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 and deals for you by selecting your travel dates.
Choose your dates
11:30 pm - 4:35 amONT-EZE
25h 05m3 stops
1:40 am - 10:00 pmEZE-ONT
24h 20m2 stops
$788Avianca
Find Deal
Tue, May 7 - Wed, May 22
11:30 pm - 12:05 amONT-EZE
20h 35m2 stops
1:40 am - 10:00 pmEZE-ONT
24h 20m2 stops
$794Avianca
Find Deal
Tue, May 7 - Wed, May 22
11:30 pm - 4:35 amONT-EZE
25h 05m3 stops
6:40 am - 10:00 pmEZE-ONT
19h 20m2 stops
$807Avianca
Find Deal
Tue, May 7 - Mon, May 27
11:30 pm - 12:05 amONT-EZE
20h 35m2 stops
6:40 am - 10:00 pmEZE-ONT
19h 20m2 stops
$813Avianca
Find Deal
Tue, May 7 - Mon, May 27
11:30 pm - 4:35 amONT-EZE
25h 05m3 stops
1:40 am - 10:00 pmEZE-ONT
24h 20m2 stops
$817Avianca
Find Deal
Tue, May 7 - Sun, May 26
5:15 am - 8:00 amONT-EZE
46h 45m2 stops
9:00 pm - 8:48 pmEZE-ONT
27h 48m2 stops
$1,022United Airlines
Find Deal
Sun, May 19 - Thu, May 30
10:42 am - 8:00 amONT-EZE
41h 18m2 stops
9:00 pm - 8:48 pmEZE-ONT
27h 48m2 stops
$1,023United Airlines
Find Deal
Tue, May 21 - Thu, May 30
11:30 pm - 7:40 amONT-EZE
28h 10m2 stops
1:40 am - 10:00 pmEZE-ONT
24h 20m3 stops
$1,164
Find Deal
Tue, Apr 16 - Sun, Apr 21
12:58 am - 7:40 amONT-EZE
26h 42m3 stops
1:40 am - 10:00 pmEZE-ONT
24h 20m3 stops
$1,313
Find Deal
Mon, Apr 15 - Sun, Apr 21
11:59 pm - 7:05 amONT-EZE
27h 06m2 stops
8:50 pm - 10:00 pmEZE-ONT
29h 10m2 stops
$1,355American Airlines
Find Deal
Fri, Sep 13 - Thu, Oct 3

Flights from Ontario to Buenos Aires - Travel Insights & Trends

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

What is the cheapest month to fly from Ontario to Buenos Aires Ministro Pistarini Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Buenos Aires Ministro Pistarini Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Ontario to Buenos Aires Ministro Pistarini Airport is September, where tickets cost $856 on average. On the other hand, the most expensive months are December and February, where the average cost of tickets is $1,555 and $1,157 respectively.

How far in advance should I book a flight from Ontario to Buenos Aires Ministro Pistarini Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Buenos Aires Ministro Pistarini Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Ontario to Buenos Aires Ministro Pistarini Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 80 days before departure.

Which airlines provide the cheapest flights from Ontario to Buenos Aires?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Ontario to Buenos Aires were found on Avianca ($788) and United Airlines ($1,022). Avianca proposed the cheapest one-way flight at $338.

How long does a flight from Ontario to Buenos Aires take?

There are no direct flights from Ontario to Buenos Aires. The quickest journey takes 17h 18m.

Good to know

Low season

February

High season

December

Cheapest flight

$338
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Ontario to Buenos Aires

When to book flights from Ontario to Buenos Aires

Are your dates flexible? Find out the best times to travel from Ontario to Buenos Aires based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ontario to Buenos Aires flights

  • What is the cheapest flight from Ontario to Buenos Aires Ministro Pistarini Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Buenos Aires Ministro Pistarini Airport was $338 for a one-way ticket and $788 for a round-trip.

  • Do I need a passport to fly between Ontario and Buenos Aires?

    A passport is required to fly from Ontario to Buenos Aires.

  • Which aircraft models fly most regularly from Ontario to Buenos Aires?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Buenos Aires?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Ontario and Buenos Aires, with Star Alliance being the most commonly used for this route.

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

    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 Buenos Aires.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buenos Aires from Ontario 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 Buenos Aires?

    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 to Buenos Aires with an airline and back to Ontario with another airline. Booking your flights between Ontario and EZE can sometimes prove cheaper using this method.

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

    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 to Buenos Aires from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Ontario to Buenos Aires

Need help choosing which airline to fly with from Ontario to Buenos Aires? 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 KAYAK reviews.
7.3
American AirlinesOverall score based on 15181 reviews
72comfort
66food
73overall
80crew
71entertainment
76boarding
Airline reviews

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

Read more about American Airlines

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

You cancelled my flight by email then made it very difficult to get in contact with you. Then put me in a flight with a long layover in Mexico returning to the wrong airport in uk. Mind blowing my stressful. I missed see my grand dad because of you.

Apart from the delay due to unforeseen circumstances. The leg from sjc to dfw was fine. It was the leg from dfw to orf that we encountered issues mainly due to the flight attendant crew not being friendly. We had two small children and we needed some assistance to warm up milk so the baby would sleep. The crew just didn’t get it and made things very difficult. One made a remark that the baby’s dirty diaper smell was a “gift” to the plane in a rude way. Normally I’d brush that off as a funny comment if the rest of the trip the attendants were helpful or understanding of the difficulty we faced. But that wasn’t the case. We were met with rudeness on the second leg. Whereas on the first leg the crew were so nice and helpful.

This was not the BA business class it used to be. Mediocre food, attendants seemed stretched thin. All the little luxuries that used to make BA business fun were missing. Flight delayed and the explanation given was they forgot to pick up crew - I hope I misheard! Transfer in LHR “sticky” - we thought we had way too much time at 3hours but it was needed. Next time will try different route.

Flight From PHX to CVG was on time, very professional staff

The food at Admirals Club was really great Pijamas were a nice feature The flight attendant was very nice and great attitude The aa.com does not work well specially internet service Overall a very good flight .

Flight was delayed and missed connecting flight. Did not give warning about delay until we showed up at the airport. Not good.

The usual wait at Columbus once you land to get to an open gate (20 minutes) and then the usual 30 minutes for your luggage to appear.

Nothing, flight was supposed to leave at 758 am. My flight didn’t leave until 430 pm. Spent the whole day at the airport.

Book cheap flights from Ontario to Buenos Aires

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Buenos Aires found on KAYAK in the last 72 hours.
5/7Tue
3 stopsAvianca
25h 05mONT-EZE
$338
8/31Sat
3 stopsAvianca
25h 05mONT-EZE
$340
8/31Sat
2 stopsAvianca
20h 35mONT-EZE
$342
5/7Tue
2 stopsAvianca
20h 35mONT-EZE
$344
5/11Sat
2 stops
23h 35mONT-EZE
$356
5/20Mon
3 stops
23h 35mONT-EZE
$372
8/28Wed
1 stopDelta
16h 15mONT-EZE
$710
8/30Fri
1 stopDelta
30h 01mONT-EZE
$716
8/31Sat
1 stopSWISS
21h 58mONT-EZE
$718
4/13Sat
2 stopsAmerican Airlines
20h 04mONT-EZE
$3,187

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Last minute flights from Ontario to Buenos Aires

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ontario to Buenos Aires that are departing in the next 10 days.
4/2Tue
multi-stopAvianca
25h 05mONT-EZE
4/16Tue
multi-stopAvianca
20h 00mEZE-ONT
$1,190
4/2Tue
multi-stopAvianca
25h 05mONT-EZE
4/16Tue
multi-stopAvianca
19h 20mEZE-ONT
$1,374
4/2Tue
multi-stopAvianca
25h 05mONT-EZE
4/16Tue
multi-stopAvianca
20h 00mEZE-ONT
$1,452
4/2Tue
multi-stopAvianca
20h 35mONT-EZE
4/16Tue
multi-stopAvianca
19h 20mEZE-ONT
$1,650
4/2Tue
multi-stopAvianca
25h 05mONT-EZE
4/16Tue
multi-stopAvianca
19h 20mEZE-ONT
$1,664
3/29Fri
multi-stopUnited Airlines
22h 20mONT-EZE
4/22Mon
multi-stopUnited Airlines
19h 40mEZE-ONT
$1,818
3/31Sun
multi-stopAvianca
20h 35mONT-EZE
4/2Tue
multi-stopAvianca
20h 00mEZE-ONT
$1,913
3/29Fri
multi-stopUnited Airlines
22h 20mONT-EZE
4/11Thu
multi-stopUnited Airlines
19h 40mEZE-ONT
$1,943
4/1Mon
multi-stopUnited Airlines
17h 15mONT-EZE
4/3Wed
multi-stopUnited Airlines
19h 40mEZE-ONT
$2,068
4/2Tue
multi-stopUnited Airlines
17h 15mONT-EZE
4/16Tue
multi-stopUnited Airlines
19h 40mEZE-ONT
$2,123

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Ontario - Buenos Aires Flights

Departure:

Ontario (ONT)United States

Destination:

Buenos Aires (EZE)Argentina

Return flight deals:

Buenos Aires - Ontario

Cabin classes: