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Argentina

$426+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EZE
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This Priceline deal was found by Cheapflights users on 12/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/910:30 pmONT - EZE
2 stops26h 20mAvianca
Tue 12/166:15 amEZE - ONT
3 stops19h 40mAvianca
Deal found 12/2$1,273
This United Airlines deal was found by Cheapflights users on 12/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:04 amONT - EZE
1 stop20h 16mUnited Airlines
Mon 1/1210:05 pmEZE - ONT
2 stops19h 42mUnited Airlines
Deal found 12/4$1,285
This Cheapflightsfares deal was found by Cheapflights users on 12/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/710:30 pmONT - EZE
2 stops21h 05mAvianca
Mon 12/82:40 amEZE - ONT
2 stops23h 15mAvianca
Deal found 12/4$1,325
This United Airlines deal was found by Cheapflights users on 12/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:00 amONT - EZE
1 stop20h 20mUnited Airlines
Wed 1/2110:05 pmEZE - ONT
2 stops19h 42mUnited Airlines
Deal found 12/2$1,384
This Priceline deal was found by Cheapflights users on 12/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/310:25 pmONT - MDZ
2 stops51h 15mLATAM Airlines
Fri 12/267:50 amMDZ - ONT
2 stops20h 33mLATAM Airlines
Deal found 12/3$2,841
This Mytrip deal was found by Cheapflights users on 12/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:30 pmONT - MDZ
3 stops28h 30mMultiple Airlines
Sat 1/39:00 pmMDZ - ONT
3 stops28h 55mMultiple Airlines
Deal found 12/4$2,978
This business-class.com deal was found by Cheapflights users on 12/2. 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 business-class.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:30 pmONT - MDZ
2 stops20h 44mMultiple Airlines
Sat 1/31:27 amMDZ - ONT
2 stops24h 28mMultiple Airlines
Deal found 12/2$7,028

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 December 4, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$1,030
(United Airlines)

One-way from

$426
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,299
Provider with most accurate pricing for Los Angeles-Buenos Aires (BUE) flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Buenos Aires (BUE) flights.
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From Ontario to Argentina
Search Deals
One-way flight from Ontario to Argentina
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($91 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 4, 2025.
Use the filters below to find and compare flights from Ontario to Argentina that are best for you.

Fly from

Ontario

Fly to

Argentina

Route

Depart

Return

Price

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 2/3

8:00 am-9:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Mon 2/23

10:05 pm-12:38 pm

2 stops19h 33m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 3/3

6:00 am-7:20 am

2 stops20h 20m

Buenos Aires Ministro Pistarini

Wed 3/18

9:05 pm-12:48 pm

2 stops19h 43m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 3/10

6:00 am-8:20 am

1 stop22h 20m

Buenos Aires Ministro Pistarini

Tue 3/17

9:05 pm-12:48 pm

2 stops19h 43m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Mon 1/26

6:00 am-7:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Thu 2/26

10:05 pm-12:38 pm

2 stops19h 33m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 2/19

6:00 am-7:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Thu 2/26

10:05 pm-12:38 pm

2 stops19h 33m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 3/17

6:00 am-8:20 am

1 stop22h 20m

Buenos Aires Ministro Pistarini

Tue 3/24

9:05 pm-12:18 pm

2 stops19h 13m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 1/22

6:00 am-7:20 am

2 stops20h 20m

Buenos Aires Ministro Pistarini

Mon 2/2

10:05 pm-12:47 pm

2 stops19h 42m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 2/3

8:00 am-9:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Tue 2/24

10:05 pm-12:38 pm

2 stops19h 33m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Mon 3/23

5:15 am-8:20 am

2 stops23h 05m

Buenos Aires Ministro Pistarini

Tue 3/31

9:00 pm-12:20 pm

2 stops19h 20m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Wed 1/21

5:05 am-7:20 am

2 stops21h 15m

Buenos Aires Ministro Pistarini

Thu 1/29

11:55 pm-10:53 pm

2 stops27h 58m

$1,030

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 25 results
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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

What is the cheapest month to book a flight from Ontario to Argentina?

Currently, May is the cheapest month in which you can book a flight from Ontario to Argentina (average of $269). Flying from Ontario to Argentina in June is currently the most expensive (average of $770). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to AR?

Find hourly flight availability from Ontario to Argentina. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

One of the essential ways to save on airfare from Ontario to Argentina is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 69% on airfare.

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 20h 20m. Fly via United Airlines to get the fastest option. Ontario and Argentina are separated by a distance of 6096 mi.

  • 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.

  • What is the cheapest month to book a flight from Ontario to Argentina?

    Currently, May is the cheapest month in which you can book a flight from Ontario to Argentina (average of $269). Flying from Ontario to Argentina in June is currently the most expensive (average of $770). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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