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Cheap flights from Ontario to Buenos Aires from $414

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 4/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Avianca Logo
11:35 pm - 5:00 am
ONT
-
EZE
25h 25m
3 stops
Avianca Logo
2:30 am - 9:45 pm
EZE
-
ONT
23h 15m
2 stops
$944Avianca
Thu, May 7 - Wed, May 13
Avianca Logo
11:35 pm - 5:00 am
ONT
-
EZE
25h 25m
3 stops
Avianca Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
$947Avianca
Tue, May 5 - Fri, May 8
Multiple Airlines Logo
12:27 am - 3:45 am
ONT
-
EZE
23h 18m
3 stops
Multiple Airlines Logo
9:15 pm - 10:37 pm
EZE
-
ONT
29h 22m
3 stops
$1,007Multiple Airlines
Sat, Mar 14 - Wed, Mar 25
Multiple Airlines Logo
12:27 am - 10:20 am
ONT
-
EZE
29h 53m
3 stops
Multiple Airlines Logo
2:43 pm - 10:37 pm
EZE
-
ONT
35h 54m
3 stops
$1,011Multiple Airlines
Tue, Mar 17 - Mon, Mar 23
Avianca Logo
11:35 pm - 1:20 am
ONT
-
EZE
21h 45m
2 stops
Avianca Logo
2:30 am - 9:45 pm
EZE
-
ONT
23h 15m
2 stops
$1,038Avianca
Thu, Jun 4 - Mon, Jun 15
Multiple Airlines Logo
9:36 pm - 5:40 am
ONT
-
EZE
28h 04m
3 stops
Multiple Airlines Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
$1,043Multiple Airlines
Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
6:05 am - 8:00 am
ONT
-
EZE
21h 55m
1 stop
United Airlines Logo
9:00 pm - 8:36 pm
EZE
-
ONT
27h 36m
2 stops
$1,051United Airlines
Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
6:05 am - 8:00 am
ONT
-
EZE
21h 55m
1 stop
United Airlines Logo
9:00 pm - 9:58 pm
EZE
-
ONT
28h 58m
1 stop
$1,059United Airlines
Wed, Apr 22 - Wed, Apr 29
Delta Logo
10:00 pm - 9:45 am
ONT
-
EZE
31h 45m
1 stop
Delta Logo
8:10 pm - 6:15 pm
EZE
-
ONT
26h 05m
1 stop
$1,061Delta
Sun, May 24 - Wed, Jul 29
Avianca Logo
11:35 pm - 5:00 am
ONT
-
EZE
25h 25m
3 stops
Avianca Logo
6:10 am - 9:45 pm
EZE
-
ONT
19h 35m
3 stops
$1,077Avianca
Thu, May 14 - Thu, May 21

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
Apr 22
ONT6:05 amOntario
21h 55m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Apr 29
EZE9:00 pmBuenos Aires Ministro Pistarini
27h 36m
2 stops
ONT8:36 pmOntario
$1,051
United Airlines
Apr 22
ONT6:05 amOntario
21h 55m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Apr 29
EZE9:00 pmBuenos Aires Ministro Pistarini
28h 58m
1 stop
ONT9:58 pmOntario
$1,059
United Airlines
May 22
ONT5:45 amOntario
22h 15m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Jun 1
EZE9:00 pmBuenos Aires Ministro Pistarini
19h 12m
2 stops
ONT12:12 pmOntario
$1,091

LATAM Airlines flights from Ontario to Buenos Aires Ministro Pistarini Airport

Our best LATAM Airlines deals on Ontario to Buenos Aires Ministro Pistarini Airport flight tickets
LATAM Airlines
May 4
ONT12:49 pmOntario
16h 56m
1 stop
EZE9:45 amBuenos Aires Ministro Pistarini
May 12
EZE8:10 pmBuenos Aires Ministro Pistarini
18h 47m
1 stop
ONT10:57 amOntario
$1,100
LATAM Airlines
May 3
ONT10:15 pmOntario
31h 30m
1 stop
EZE9:45 amBuenos Aires Ministro Pistarini
May 10
EZE8:10 pmBuenos Aires Ministro Pistarini
18h 47m
1 stop
ONT10:57 amOntario
$1,103
LATAM Airlines
May 3
ONT10:15 pmOntario
31h 30m
1 stop
EZE9:45 amBuenos Aires Ministro Pistarini
May 10
EZE1:10 pmBuenos Aires Ministro Pistarini
25h 47m
2 stops
ONT10:57 amOntario
$1,107

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 March 4, 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

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 5/7

11:35 pm-5:00 am

3 stops25h 25m

Buenos Aires Ministro Pistarini

Wed 5/13

2:30 am-9:45 pm

2 stops23h 15m

$944

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 5/5

11:35 pm-5:00 am

3 stops25h 25m

Buenos Aires Ministro Pistarini

Fri 5/8

4:50 pm-9:45 pm

2 stops32h 55m

$947

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sat 3/14

12:27 am-3:45 am

3 stops23h 18m

Buenos Aires Ministro Pistarini

Wed 3/25

9:15 pm-10:37 pm

3 stops29h 22m

$1,007

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 3/17

12:27 am-10:20 am

3 stops29h 53m

Buenos Aires Ministro Pistarini

Mon 3/23

2:43 pm-10:37 pm

3 stops35h 54m

$1,011

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 6/4

11:35 pm-1:20 am

2 stops21h 45m

Buenos Aires Ministro Pistarini

Mon 6/15

2:30 am-9:45 pm

2 stops23h 15m

$1,038

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Wed 4/22

9:36 pm-5:40 am

3 stops28h 04m

Buenos Aires Ministro Pistarini

Wed 4/29

4:50 pm-9:45 pm

2 stops32h 55m

$1,043

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Wed 4/22

6:05 am-8:00 am

1 stop21h 55m

Buenos Aires Ministro Pistarini

Wed 4/29

9:00 pm-8:36 pm

2 stops27h 36m

$1,051

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Wed 4/22

6:05 am-8:00 am

1 stop21h 55m

Buenos Aires Ministro Pistarini

Wed 4/29

9:00 pm-9:58 pm

1 stop28h 58m

$1,059

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 5/24

10:00 pm-9:45 am

1 stop31h 45m

Buenos Aires Ministro Pistarini

Wed 7/29

8:10 pm-6:15 pm

1 stop26h 05m

$1,061

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 5/14

11:35 pm-5:00 am

3 stops25h 25m

Buenos Aires Ministro Pistarini

Thu 5/21

6:10 am-9:45 pm

3 stops19h 35m

$1,077

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 36% 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

20h 00m

Direct flights

None
The fastest flight from Ontario to Buenos Aires Ministro Pistarini Airport takes 20h 00m
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

  • 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 20h 00m.

  • 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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