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Cheap flights from Ontario to Buenos Aires from $470

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Buenos Aires departing on 8/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
Avianca Logo
11:35 pm - 12:25 am
ONT
-
EZE
20h 50m
2 stops
Avianca Logo
7:10 am - 9:45 pm
EZE
-
ONT
18h 35m
2 stops
$772Avianca
Thu, Aug 27 - Tue, Sep 29
Avianca Logo
11:35 pm - 12:25 am
ONT
-
EZE
20h 50m
2 stops
Avianca Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
$798Avianca
Tue, Sep 1 - Mon, Sep 14
Avianca Logo
11:35 pm - 12:25 am
ONT
-
EZE
20h 50m
2 stops
Avianca Logo
7:10 am - 9:45 pm
EZE
-
ONT
18h 35m
2 stops
$800Avianca
Tue, Aug 11 - Tue, Aug 18
Avianca Logo
11:35 pm - 3:40 pm
ONT
-
EZE
36h 05m
2 stops
Avianca Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
$802Avianca
Thu, Sep 10 - Fri, Sep 25
Avianca Logo
11:35 pm - 12:25 am
ONT
-
EZE
44h 50m
2 stops
Avianca Logo
7:10 am - 9:45 pm
EZE
-
ONT
18h 35m
2 stops
$806Avianca
Tue, Sep 1 - Tue, Sep 15
Avianca Logo
11:35 pm - 1:20 am
ONT
-
EZE
21h 45m
2 stops
Avianca Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
$816Avianca
Tue, Aug 11 - Wed, Aug 26
Avianca Logo
10:30 pm - 1:35 am
ONT
-
EZE
22h 05m
2 stops
Avianca Logo
4:55 pm - 8:55 pm
EZE
-
ONT
33h 00m
2 stops
$826Avianca
Tue, Jan 12 - Fri, Jan 22
Avianca Logo
11:30 pm - 3:50 pm
ONT
-
EZE
36h 20m
2 stops
Avianca Logo
7:30 am - 8:55 pm
EZE
-
ONT
18h 25m
2 stops
$829Avianca
Tue, Oct 27 - Tue, Nov 3
Avianca Logo
11:35 pm - 12:25 am
ONT
-
EZE
20h 50m
2 stops
Avianca Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
$844Avianca
Tue, Aug 11 - Fri, Sep 4
Avianca Logo
11:35 pm - 5:40 am
ONT
-
EZE
26h 05m
2 stops
Avianca Logo
2:30 am - 9:45 pm
EZE
-
ONT
23h 15m
2 stops
$845Avianca
Thu, Aug 13 - Wed, Aug 19

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Avianca flights from Ontario to Buenos Aires Ministro Pistarini Airport

Our best Avianca deals on Ontario to Buenos Aires Ministro Pistarini Airport flight tickets
Avianca
Aug 27
ONT11:35 pmOntario
20h 50m
2 stops
EZE12:25 amBuenos Aires Ministro Pistarini
Sep 29
EZE7:10 amBuenos Aires Ministro Pistarini
18h 35m
2 stops
ONT9:45 pmOntario
$772
Avianca
Sep 1
ONT11:35 pmOntario
20h 50m
2 stops
EZE12:25 amBuenos Aires Ministro Pistarini
Sep 14
EZE4:50 pmBuenos Aires Ministro Pistarini
32h 55m
2 stops
ONT9:45 pmOntario
$798
Avianca
Aug 11
ONT11:35 pmOntario
20h 50m
2 stops
EZE12:25 amBuenos Aires Ministro Pistarini
Aug 18
EZE7:10 amBuenos Aires Ministro Pistarini
18h 35m
2 stops
ONT9:45 pmOntario
$800

United Airlines flights from Ontario to Buenos Aires Ministro Pistarini Airport

Our best United Airlines deals on Ontario to Buenos Aires Ministro Pistarini Airport flight tickets
United Airlines
Jul 29
ONT5:45 amOntario
22h 15m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Aug 12
EZE9:00 pmBuenos Aires Ministro Pistarini
19h 50m
2 stops
ONT12:50 pmOntario
$1,282
United Airlines
Jul 29
ONT5:45 amOntario
22h 15m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Aug 12
EZE9:00 pmBuenos Aires Ministro Pistarini
28h 59m
1 stop
ONT9:59 pmOntario
$1,291
United Airlines
Jul 29
ONT5:45 amOntario
22h 15m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Aug 16
EZE9:00 pmBuenos Aires Ministro Pistarini
28h 59m
1 stop
ONT9:59 pmOntario
$1,321

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Buenos Aires Ministro Pistarini Airport 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, momondo users made 832,500 searches. Data last updated July 24, 2026.
Use the filters below to find and compare flights from Ontario to Buenos Aires Ministro Pistarini Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 8/27

11:35 pm-12:25 am

2 stops20h 50m

Buenos Aires Ministro Pistarini

Tue 9/29

7:10 am-9:45 pm

2 stops18h 35m

$772

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 9/1

11:35 pm-12:25 am

2 stops20h 50m

Buenos Aires Ministro Pistarini

Mon 9/14

4:50 pm-9:45 pm

2 stops32h 55m

$798

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 8/11

11:35 pm-12:25 am

2 stops20h 50m

Buenos Aires Ministro Pistarini

Tue 8/18

7:10 am-9:45 pm

2 stops18h 35m

$800

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 9/10

11:35 pm-3:40 pm

2 stops36h 05m

Buenos Aires Ministro Pistarini

Fri 9/25

4:50 pm-9:45 pm

2 stops32h 55m

$802

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 9/1

11:35 pm-12:25 am

2 stops44h 50m

Buenos Aires Ministro Pistarini

Tue 9/15

7:10 am-9:45 pm

2 stops18h 35m

$806

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 8/11

11:35 pm-1:20 am

2 stops21h 45m

Buenos Aires Ministro Pistarini

Wed 8/26

4:50 pm-9:45 pm

2 stops32h 55m

$816

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 1/12

10:30 pm-1:35 am

2 stops22h 05m

Buenos Aires Ministro Pistarini

Fri 1/22

4:55 pm-8:55 pm

2 stops33h 00m

$826

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 10/27

11:30 pm-3:50 pm

2 stops36h 20m

Buenos Aires Ministro Pistarini

Tue 11/3

7:30 am-8:55 pm

2 stops18h 25m

$829

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 8/11

11:35 pm-12:25 am

2 stops20h 50m

Buenos Aires Ministro Pistarini

Fri 9/4

4:50 pm-9:45 pm

2 stops32h 55m

$844

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 8/13

11:35 pm-5:40 am

2 stops26h 05m

Buenos Aires Ministro Pistarini

Wed 8/19

2:30 am-9:45 pm

2 stops23h 15m

$845

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Ontario to Buenos Aires Ministro Pistarini Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Ontario to Buenos Aires Ministro Pistarini Airport flights?

You could potentially save up to 14% on your flight if you consider stops on a Ontario to Buenos Aires Ministro Pistarini Airport flight.

When to book flights from Ontario to Buenos Aires Ministro Pistarini Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Buenos Aires Ministro Pistarini Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Buenos Aires Ministro Pistarini Airport (ONT to EZE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Buenos Aires Ministro Pistarini Airport

Fastest flight time

18h 59m

Direct flights

None
The fastest flight from Ontario to Buenos Aires Ministro Pistarini Airport takes 18h 59m
There are no direct flights from Ontario to Buenos Aires Ministro Pistarini Airport. There are no popular flight routes from Ontario to Buenos Aires Ministro Pistarini Airport.
Search flight deals

Frequently asked questions about flying from Ontario to Buenos Aires Ministro Pistarini Airport

  • How far is Ontario to Buenos Aires Ministro Pistarini by plane?

    The straight-line distance from Ontario to Buenos Aires Ministro Pistarini is 6098.3 mi. In terms of flight time, this usually takes a little over 18h 59m.

  • When did momondo last update prices for flights from Ontario Airport to Buenos Aires Ministro Pistarini Airport?

    Prices for flights from Ontario Airport to Buenos Aires Ministro Pistarini Airport are updated daily.

  • How old do you have to be to fly from Ontario Airport to Buenos Aires Ministro Pistarini Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Buenos Aires Ministro Pistarini Airport.

  • What documentation or ID do you need to fly to Buenos Aires Ministro Pistarini Airport?

    The travel and health documents required for your trip to Buenos Aires Ministro Pistarini Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buenos Aires Ministro Pistarini Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Buenos Aires?

Finding the right flight to Buenos Aires from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Buenos Aires quick and easy, saving you time and money.

Can I find flights from Ontario to Buenos Aires with flexible booking policies on momondo?

momondo does allow users to show only those flights to Buenos Aires from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Buenos Aires?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Buenos Aires from Ontario.

I’m not ready to book a flight from Ontario to Buenos Aires right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Buenos Aires from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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