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Cheap flights from Ontario to Buenos Aires from $344

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 6/21. 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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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.
Multiple Airlines Logo
12:55 am - 10:00 am
ONT
-
EZE
29h 05m
3 stops
Multiple Airlines Logo
2:30 am - 9:45 pm
EZE
-
ONT
23h 15m
2 stops
$906Multiple Airlines
Tue, May 26 - Wed, Jun 24
Multiple Airlines Logo
12:55 am - 10:00 am
ONT
-
EZE
29h 05m
3 stops
Multiple Airlines Logo
7:10 am - 9:45 pm
EZE
-
ONT
18h 35m
2 stops
$943Multiple Airlines
Sun, May 17 - Tue, Jun 2
Multiple Airlines Logo
9:36 pm - 10:00 am
ONT
-
EZE
32h 24m
3 stops
Multiple Airlines Logo
2:30 am - 9:45 pm
EZE
-
ONT
23h 15m
2 stops
$971Multiple Airlines
Tue, Aug 25 - Wed, Sep 2
Multiple Airlines Logo
12:55 am - 10:00 am
ONT
-
EZE
29h 05m
3 stops
Multiple Airlines Logo
9:15 pm - 11:05 pm
EZE
-
ONT
29h 50m
3 stops
$972Multiple Airlines
Sun, May 31 - Wed, Jun 10
Multiple Airlines Logo
12:55 am - 3:40 pm
ONT
-
EZE
34h 45m
3 stops
Multiple Airlines Logo
2:30 am - 9:45 pm
EZE
-
ONT
23h 15m
2 stops
$979Multiple Airlines
Thu, May 21 - Wed, May 27
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
$980Multiple Airlines
Mon, Jun 1 - Mon, Jun 8
Multiple Airlines Logo
9:36 pm - 10:00 am
ONT
-
EZE
32h 24m
3 stops
Multiple Airlines Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
$987Multiple Airlines
Sun, Sep 6 - Fri, Sep 18
Multiple Airlines Logo
9:36 pm - 9:16 am
ONT
-
EZE
31h 40m
3 stops
Multiple Airlines Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
$1,004Multiple Airlines
Thu, Aug 20 - Wed, Sep 16
Multiple Airlines Logo
12:55 am - 10:00 am
ONT
-
EZE
29h 05m
3 stops
Multiple Airlines Logo
6:10 am - 9:45 pm
EZE
-
ONT
19h 35m
3 stops
$1,067Multiple Airlines
Tue, May 26 - Thu, Jun 25
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
$1,071Avianca
Tue, Aug 18 - Mon, Sep 14

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
Jul 22
ONT11:48 amOntario
27h 02m
2 stops
EZE6:50 pmBuenos Aires Ministro Pistarini
Aug 10
EZE1:10 pmBuenos Aires Ministro Pistarini
25h 54m
2 stops
ONT11:04 amOntario
$1,143
LATAM Airlines
Jun 16
ONT7:05 amOntario
22h 15m
2 stops
EZE9:20 amBuenos Aires Ministro Pistarini
Jun 29
EZE3:55 amBuenos Aires Ministro Pistarini
34h 45m
2 stops
ONT10:40 amOntario
$1,158
LATAM Airlines
Jul 18
ONT11:48 amOntario
27h 02m
2 stops
EZE6:50 pmBuenos Aires Ministro Pistarini
Aug 5
EZE1:10 pmBuenos Aires Ministro Pistarini
25h 28m
2 stops
ONT10:38 amOntario
$1,183

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 18
ONT11:35 pmOntario
25h 25m
3 stops
EZE5:00 amBuenos Aires Ministro Pistarini
Sep 15
EZE7:10 amBuenos Aires Ministro Pistarini
18h 35m
2 stops
ONT9:45 pmOntario
$1,071
Avianca
May 21
ONT11:35 pmOntario
25h 25m
3 stops
EZE5:00 amBuenos Aires Ministro Pistarini
May 25
EZE4:50 pmBuenos Aires Ministro Pistarini
32h 55m
2 stops
ONT9:45 pmOntario
$1,081
Avianca
Jun 4
ONT11:35 pmOntario
21h 45m
2 stops
EZE1:20 amBuenos Aires Ministro Pistarini
Jun 17
EZE2:30 amBuenos Aires Ministro Pistarini
23h 15m
2 stops
ONT9:45 pmOntario
$1,207

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 April 18, 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

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 5/26

12:55 am-10:00 am

3 stops29h 05m

Buenos Aires Ministro Pistarini

Wed 6/24

2:30 am-9:45 pm

2 stops23h 15m

$906
Quickest round-trip

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 5/17

12:55 am-10:00 am

3 stops29h 05m

Buenos Aires Ministro Pistarini

Tue 6/2

7:10 am-9:45 pm

2 stops18h 35m

$943

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 8/25

9:36 pm-10:00 am

3 stops32h 24m

Buenos Aires Ministro Pistarini

Wed 9/2

2:30 am-9:45 pm

2 stops23h 15m

$971

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 5/31

12:55 am-10:00 am

3 stops29h 05m

Buenos Aires Ministro Pistarini

Wed 6/10

9:15 pm-11:05 pm

3 stops29h 50m

$972

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 5/21

12:55 am-3:40 pm

3 stops34h 45m

Buenos Aires Ministro Pistarini

Wed 5/27

2:30 am-9:45 pm

2 stops23h 15m

$979

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Mon 6/1

9:36 pm-5:40 am

3 stops28h 04m

Buenos Aires Ministro Pistarini

Mon 6/8

4:50 pm-9:45 pm

2 stops32h 55m

$980

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 9/6

9:36 pm-10:00 am

3 stops32h 24m

Buenos Aires Ministro Pistarini

Fri 9/18

4:50 pm-9:45 pm

2 stops32h 55m

$987

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 8/20

9:36 pm-9:16 am

3 stops31h 40m

Buenos Aires Ministro Pistarini

Wed 9/16

4:50 pm-9:45 pm

2 stops32h 55m

$1,004

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 5/26

12:55 am-10:00 am

3 stops29h 05m

Buenos Aires Ministro Pistarini

Thu 6/25

6:10 am-9:45 pm

3 stops19h 35m

$1,067

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 8/18

11:35 pm-5:00 am

3 stops25h 25m

Buenos Aires Ministro Pistarini

Mon 9/14

2:30 am-9:45 pm

2 stops23h 15m

$1,071

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

16h 56m

Direct flights

None
The fastest flight from Ontario to Buenos Aires Ministro Pistarini Airport takes 16h 56m
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 16h 56m.

  • 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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