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Argentina

$444+ 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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EZE
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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Find 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 November 6, 2025.

This Mytrip deal was found by Cheapflights users on 11/4. 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.
Thu 11/1310:30 pmONT - EZE
3 stops25h 40mAvianca
Fri 11/214:55 pmEZE - ONT
3 stops33h 00mAvianca
Deal found 11/4$1,071
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Mon 12/156:00 amONT - EZE
1 stop20h 20mUnited Airlines
Thu 12/2511:55 pmEZE - ONT
1 stop26h 57mUnited Airlines
Deal found 11/5$1,113
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Mon 12/226:39 pmONT - EZE
2 stops31h 41mUnited Airlines
Thu 1/2211:55 pmEZE - ONT
2 stops26h 03mUnited Airlines
Deal found 11/6$1,126
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Mon 12/86:00 amONT - EZE
2 stops20h 20mUnited Airlines
Mon 12/1510:05 pmEZE - ONT
2 stops19h 12mUnited Airlines
Deal found 11/6$1,180
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Mon 12/156:00 amONT - EZE
1 stop22h 20mUnited Airlines
Mon 12/2911:55 pmEZE - ONT
1 stop26h 57mUnited Airlines
Deal found 11/5$1,189
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Sat 12/66:00 amONT - EZE
1 stop20h 20mUnited Airlines
Tue 12/2310:05 pmEZE - ONT
2 stops19h 33mUnited Airlines
Deal found 11/5$1,220
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Mon 12/156:00 amONT - EZE
1 stop22h 20mUnited Airlines
Sun 12/2810:05 pmEZE - ONT
1 stop28h 47mUnited Airlines
Deal found 11/5$1,229
This Mytrip deal was found by Cheapflights users on 11/5. 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.
Mon 11/1012:42 amONT - EZE
3 stops24h 38mMultiple Airlines
Wed 11/267:43 pmEZE - ONT
3 stops32h 09mMultiple Airlines
Deal found 11/5$1,232
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Fri 12/56:00 amONT - EZE
1 stop20h 20mUnited Airlines
Fri 12/1210:05 pmEZE - ONT
2 stops19h 13mUnited Airlines
Deal found 11/5$1,260
This Mytrip deal was found by Cheapflights users on 11/5. 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.
Thu 11/2010:30 pmONT - MDZ
3 stops27h 10mMultiple Airlines
Mon 12/89:10 pmMDZ - ONT
3 stops28h 45mMultiple Airlines
Deal found 11/5$1,803

Cheap flight deals from Ontario to Argentina

Keep the following information in mind while searching for Ontario to Argentina flight deals. Data was last updated November 6, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$1,030
(United Airlines)

One-way from

$444
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$835
Provider with most accurate pricing for Los Angeles-Buenos Aires (BUE) flight deals.
Search Deals
Provider most trusted by Cheapflights users for 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. 10% potential increase in price ($106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 November 6, 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

Mon 1/19

6:00 am-7:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Wed 2/4

11:55 pm-5:43 pm

2 stops22h 48m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Mon 5/4

6:00 am-8:00 am

2 stops22h 00m

Buenos Aires Ministro Pistarini

Mon 5/18

9:00 pm-3:18 pm

2 stops22h 18m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 1/20

6:00 am-7:20 am

2 stops20h 20m

Buenos Aires Ministro Pistarini

Thu 1/29

10:05 pm-12:48 pm

2 stops19h 43m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 3/10

7:15 pm-6:20 am

2 stops31h 05m

Buenos Aires Ministro Pistarini

Tue 3/24

9:05 pm-12:43 pm

2 stops19h 38m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 1/22

5:05 am-7:20 am

2 stops21h 15m

Buenos Aires Ministro Pistarini

Tue 2/24

10:05 pm-12:38 pm

2 stops19h 33m

$1,030

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 1/6

6:00 am-7:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Tue 1/13

11:55 pm-9:58 pm

1 stop27h 03m

$1,038

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Wed 1/21

6:00 am-7:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Fri 2/6

10:05 pm-12:47 pm

2 stops19h 42m

$1,070

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 1/1

6:04 am-9:20 am

1 stop22h 16m

Buenos Aires Ministro Pistarini

Sun 1/18

11:55 pm-9:58 pm

1 stop27h 03m

$1,078

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 2/19

6:00 am-7:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Sat 3/7

10:55 pm-9:35 pm

1 stop27h 40m

$1,078

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 12/16

6:00 am-7:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Thu 12/25

11:55 pm-9:52 pm

1 stop26h 57m

$1,113

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 31 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 November 6, 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.

Reviews of airlines servicing Argentina

Get insights into the airlines that provide service to Argentina. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Argentina. Reviews last updated November 6, 2025.
Read through reviews of airlines operating flights from Ontario to Argentina, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,007 reviews

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,007 reviews
United Airlines
7.4
Good
9,007 reviews

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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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