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Cheap flights from Ontario to Buenos Aires from $463

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 4/19. 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
0 bags

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Find the cheapest flights from Ontario to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 9:20 am
ONT
-
EZE
22h 20m1 stop
United Airlines Logo
10:55 pm - 6:07 pm
EZE
-
ONT
23h 12m1 stop
$1,026United Airlines
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
5:00 am - 7:20 am
ONT
-
EZE
21h 20m2 stops
United Airlines Logo
9:05 pm - 12:49 pm
EZE
-
ONT
19h 44m2 stops
$1,030United Airlines
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
6:00 am - 7:20 am
ONT
-
EZE
20h 20m1 stop
United Airlines Logo
9:05 pm - 10:36 pm
EZE
-
ONT
29h 31m1 stop
$1,038United Airlines
Mon, Feb 23 - Wed, Mar 11
United Airlines Logo
1:45 pm - 7:20 am
ONT
-
EZE
36h 35m2 stops
United Airlines Logo
9:00 pm - 10:11 pm
EZE
-
ONT
29h 11m1 stop
$1,042United Airlines
Sun, Feb 15 - Mon, Apr 13
United Airlines Logo
5:10 am - 8:00 am
ONT
-
EZE
46h 50m2 stops
United Airlines Logo
9:00 pm - 12:20 pm
EZE
-
ONT
19h 20m2 stops
$1,049United Airlines
Sun, Apr 12 - Mon, Apr 20
Delta Logo
12:41 pm - 9:00 am
ONT
-
EZE
15h 19m1 stop
Delta Logo
11:55 pm - 12:02 pm
EZE
-
ONT
17h 07m1 stop
$1,058Delta
Sun, Feb 1 - Mon, Feb 16
United Airlines Logo
5:10 am - 8:00 am
ONT
-
EZE
46h 50m2 stops
United Airlines Logo
9:00 pm - 10:11 pm
EZE
-
ONT
29h 11m1 stop
$1,061United Airlines
Sun, Apr 12 - Mon, Apr 20
United Airlines Logo
6:00 am - 6:20 am
ONT
-
EZE
20h 20m1 stop
United Airlines Logo
10:55 pm - 6:07 pm
EZE
-
ONT
23h 12m1 stop
$1,066United Airlines
Sun, Mar 8 - Mon, Mar 16
United Airlines Logo
6:00 am - 7:20 am
ONT
-
EZE
20h 20m1 stop
United Airlines Logo
11:55 pm - 8:50 pm
EZE
-
ONT
25h 55m2 stops
$1,070United Airlines
Thu, Feb 12 - Sat, Feb 28
United Airlines Logo
6:00 am - 7:20 am
ONT
-
EZE
20h 20m1 stop
United Airlines Logo
11:55 pm - 9:59 pm
EZE
-
ONT
27h 04m1 stop
$1,078United Airlines
Thu, Feb 12 - Sat, Feb 28

Delta flights from Ontario to Buenos Aires Ministro Pistarini Airport

Our best Delta deals on Ontario to Buenos Aires Ministro Pistarini Airport flight tickets
Delta
Feb 1
ONT12:41 pmOntario
15h 19m
1 stop
EZE9:00 amBuenos Aires Ministro Pistarini
Feb 16
EZE11:55 pmBuenos Aires Ministro Pistarini
17h 07m
1 stop
ONT12:02 pmOntario
$1,058
Find similar
Delta
Jan 23
ONT12:41 pmOntario
15h 19m
1 stop
EZE9:00 amBuenos Aires Ministro Pistarini
Jan 30
EZE8:55 pmBuenos Aires Ministro Pistarini
19h 36m
1 stop
ONT11:31 amOntario
$1,256
Find similar
Delta
Jan 23
ONT6:00 amOntario
22h 00m
2 stops
EZE9:00 amBuenos Aires Ministro Pistarini
Jan 30
EZE8:55 pmBuenos Aires Ministro Pistarini
19h 36m
1 stop
ONT11:31 amOntario
$1,260
Find similar

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
Mar 2
ONT6:00 amOntario
22h 20m
1 stop
EZE9:20 amBuenos Aires Ministro Pistarini
Mar 9
EZE10:55 pmBuenos Aires Ministro Pistarini
23h 12m
1 stop
ONT6:07 pmOntario
$1,026
Find similar
United Airlines
Mar 2
ONT5:00 amOntario
21h 20m
2 stops
EZE7:20 amBuenos Aires Ministro Pistarini
Mar 9
EZE9:05 pmBuenos Aires Ministro Pistarini
19h 44m
2 stops
ONT12:49 pmOntario
$1,030
Find similar
United Airlines
Feb 23
ONT6:00 amOntario
20h 20m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Mar 11
EZE9:05 pmBuenos Aires Ministro Pistarini
29h 31m
1 stop
ONT10:36 pmOntario
$1,038
Find similar

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 December 11, 2025.
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

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Mon 3/2

6:00 am-9:20 am

1 stop22h 20m

Buenos Aires Ministro Pistarini

Mon 3/9

10:55 pm-6:07 pm

1 stop23h 12m

$1,026

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Mon 3/2

5:00 am-7:20 am

2 stops21h 20m

Buenos Aires Ministro Pistarini

Mon 3/9

9:05 pm-12:49 pm

2 stops19h 44m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Mon 2/23

6:00 am-7:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Wed 3/11

9:05 pm-10:36 pm

1 stop29h 31m

$1,038

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 2/15

1:45 pm-7:20 am

2 stops36h 35m

Buenos Aires Ministro Pistarini

Mon 4/13

9:00 pm-10:11 pm

1 stop29h 11m

$1,042

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 4/12

5:10 am-8:00 am

2 stops46h 50m

Buenos Aires Ministro Pistarini

Mon 4/20

9:00 pm-12:20 pm

2 stops19h 20m

$1,049

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 2/1

12:41 pm-9:00 am

1 stop15h 19m

Buenos Aires Ministro Pistarini

Mon 2/16

11:55 pm-12:02 pm

1 stop17h 07m

$1,058

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 4/12

5:10 am-8:00 am

2 stops46h 50m

Buenos Aires Ministro Pistarini

Mon 4/20

9:00 pm-10:11 pm

1 stop29h 11m

$1,061

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 3/8

6:00 am-6:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Mon 3/16

10:55 pm-6:07 pm

1 stop23h 12m

$1,066

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 2/12

6:00 am-7:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Sat 2/28

11:55 pm-8:50 pm

2 stops25h 55m

$1,070

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 2/12

6:00 am-7:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Sat 2/28

11:55 pm-9:59 pm

1 stop27h 04m

$1,078

Flights are sorted by cheapest round-trip flights 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

What is the cheapest day to depart on your flight to Buenos Aires Ministro Pistarini Airport?

Our data shows that Tuesday is the least expensive day to fly to Buenos Aires Ministro Pistarini Airport. Tickets to fly out on this day can be as low as $895. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires Ministro Pistarini Airport on Friday is $1,031.

What is the cheapest time of day to depart on your flight to Buenos Aires Ministro Pistarini Airport?

According to our data, the cheapest time of day to fly to Buenos Aires Ministro Pistarini Airport is in the afternoon. momondo users have found flights departing from Ontario to Buenos Aires Ministro Pistarini Airport in the afternoon for as low as $918. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $989 on average. Flights to Buenos Aires Ministro Pistarini Airport from Ontario at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

16h 50m

Direct flights

None
The fastest flight from Ontario to Buenos Aires Ministro Pistarini Airport takes 16h 50m
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.
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  • 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 16h 50m.

  • 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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