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Argentina

$404+ Cheap flights from Ontario (ONT) to Argentina

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EZE
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
1 adult, Economy
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Cheap flight deals from Ontario to Argentina

Cheapest flights from Ontario to Argentina
Explore the most affordable flight options available from Ontario to Argentina. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.

This Avianca deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:35 pm
ONT
-
EZE
2 stops20h 50m
Avianca
Sat 9/267:10 am
EZE
-
ONT
2 stops18h 35m
Avianca
Deal found 7/29$772
This SmartFares deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:30 pm
ONT
-
EZE
2 stops21h 05m
Avianca
Mon 12/214:55 pm
EZE
-
ONT
2 stops33h 00m
Avianca
Deal found 7/31$790
This Gotogate deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:35 pm
ONT
-
EZE
2 stops21h 45m
Avianca
Wed 10/284:55 pm
EZE
-
ONT
2 stops33h 00m
Avianca
Deal found 7/27$800
This oojo deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:35 pm
ONT
-
EZE
2 stops20h 50m
Avianca
Mon 9/144:50 pm
EZE
-
ONT
2 stops32h 55m
Avianca
Deal found 7/28$804
This FlightHub deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:35 pm
ONT
-
EZE
2 stops20h 50m
Avianca
Mon 10/264:55 pm
EZE
-
ONT
2 stops33h 00m
Avianca
Deal found 7/30$806
This FlightHub deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:35 pm
ONT
-
EZE
2 stops20h 50m
Avianca
Mon 9/72:30 am
EZE
-
ONT
2 stops23h 15m
Avianca
Deal found 7/31$815
This Justfly.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:35 pm
ONT
-
EZE
2 stops21h 45m
Avianca
Wed 8/264:50 pm
EZE
-
ONT
2 stops32h 55m
Avianca
Deal found 7/29$816
This FlightHub deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:35 pm
ONT
-
EZE
2 stops26h 05m
Avianca
Wed 10/214:50 pm
EZE
-
ONT
2 stops32h 55m
Avianca
Deal found 7/28$826
This Avianca deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:35 pm
ONT
-
EZE
2 stops21h 45m
Avianca
Fri 8/282:30 am
EZE
-
ONT
2 stops23h 15m
Avianca
Deal found 7/29$844
This Avianca deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:35 pm
ONT
-
EZE
2 stops26h 05m
Avianca
Fri 9/181:35 am
EZE
-
ONT
2 stops24h 10m
Avianca
Deal found 7/29$853
This Avianca deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:35 pm
ONT
-
EZE
2 stops20h 50m
Avianca
Mon 8/244:50 pm
EZE
-
ONT
2 stops32h 55m
Avianca
Deal found 7/30$854
This Expedia deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:35 pm
ONT
-
EZE
2 stops21h 45m
Avianca
Mon 8/314:50 pm
EZE
-
ONT
2 stops32h 55m
Avianca
Deal found 7/27$855

Find flight deals from Ontario to Argentina

Keep the following information in mind while searching for Ontario to Argentina flight deals. Data was last updated August 1, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$772
(Avianca)

One-way from

$404
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$797
Provider with most accurate pricing for Los Angeles Los Angeles-Buenos Aires (BUE) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles Los Angeles-Buenos Aires (BUE) flights.
Search Deals
From Ontario to Argentina
Search Deals
One-way flight from Ontario to Argentina
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($92 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Argentina 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, Cheapflights users made 2,558,603 searches. Data last updated August 1, 2026.
Use the filters below to find and compare flights from Ontario to Argentina that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Mon 9/7

6:00 am-8:00 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Mon 9/14

9:00 pm-12:50 pm

2 stops19h 50m

$1,160

OntarioMendoza

ONT - MDZ

ONTMDZ

Ontario

Fri 9/4

9:36 pm-11:06 am

3 stops33h 30m

Mendoza El Plumerillo

Fri 10/16

3:40 pm-11:05 pm

3 stops35h 25m

$1,163

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 9/6

6:00 am-8:00 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Mon 9/14

9:00 pm-2:01 pm

2 stops21h 01m

$1,190

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Mon 9/28

6:00 am-8:00 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Sun 10/4

9:00 pm-5:36 pm

2 stops24h 36m

$1,190

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sat 9/12

1:56 pm-8:00 am

2 stops62h 04m

Buenos Aires Ministro Pistarini

Sat 9/19

9:00 pm-9:59 pm

1 stop28h 59m

$1,225

OntarioMendoza

ONT - MDZ

ONTMDZ

Ontario

Fri 8/28

9:36 pm-6:25 am

3 stops28h 49m

Mendoza El Plumerillo

Mon 10/5

12:25 am-11:05 pm

3 stops26h 40m

$1,246

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Mon 10/5

6:00 am-8:00 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Mon 10/19

9:00 pm-8:58 pm

2 stops27h 58m

$1,269

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 8/25

9:15 am-8:00 am

1 stop18h 45m

Buenos Aires Ministro Pistarini

Mon 9/7

9:00 pm-2:01 pm

2 stops21h 01m

$1,273

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 10/15

6:00 am-8:00 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Thu 10/22

9:00 pm-9:59 pm

1 stop28h 59m

$1,278

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Fri 8/21

7:13 pm-8:00 am

2 stops32h 47m

Buenos Aires Ministro Pistarini

Mon 9/7

9:00 pm-8:01 pm

2 stops27h 01m

$1,324

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 26 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Argentina

Have a flexible travel schedule? Discover the best time to fly to Argentina from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Argentina

No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Argentina. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Argentina?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Argentina.

  • How long is the flight from Ontario to Argentina?

    There are many flights that can get you from Ontario to Argentina in 22h. Fly via United Airlines or LATAM Airlines to get the fastest option. Ontario and Argentina are separated by a distance of 6096 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Ontario to Argentina that include hotel bookings?

    Yes. In addition to deals on Ontario to Argentina flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Argentina?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Argentina.

  • Can I find deals for business class flights from Ontario to Argentina?

    Yes. Cheapflights offers flight deals from Ontario to Argentina by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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