HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Argentina

$340+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EZE
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Argentina with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$872
(Cheapflightsfares)

One-way from

$340
(Priceline)

Popular in

December

Cheapest in

September

Average price

$838
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. 6% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

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 May 1, 2025.

This Priceline deal was found by Cheapflights users on 4/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1411:25 pmONT - EZE
2 stops20h 45mAvianca
Mon 10/271:45 amEZE - ONT
2 stops24h 15mAvianca
Deal found 4/30$862
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/226:00 amONT - EZE
1 stop22h 00mUnited Airlines
Wed 8/69:00 pmEZE - ONT
2 stops29h 52mUnited Airlines
Deal found 4/29$1,025
This United deal was found by Cheapflights users on 4/29. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/136:00 amONT - EZE
3 stops42h 50mMultiple Airlines
Fri 8/19:00 pmEZE - ONT
2 stops29h 52mMultiple Airlines
Deal found 4/29$1,390

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 May 1, 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

Thu 6/12

11:25 pm-12:10 am

2 stops20h 45m

Buenos Aires Ministro Pistarini

Mon 8/4

1:40 am-9:55 pm

2 stops24h 15m

$872

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 7/22

6:00 am-8:00 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Tue 8/5

9:00 pm-10:52 pm

2 stops29h 52m

$1,025

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Fri 6/13

6:00 am-4:50 am

3 stops42h 50m

Buenos Aires Ministro Pistarini

Fri 8/1

9:00 pm-10:52 pm

2 stops29h 52m

$1,390

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Mon 5/5

12:07 pm-9:45 am

1 stop17h 38m

Buenos Aires Ministro Pistarini

Sun 5/18

8:10 pm-11:08 am

1 stop18h 58m

$1,838

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 6/12

12:59 am-7:25 am

2 stops26h 26m

Buenos Aires Ministro Pistarini

Fri 8/1

8:50 pm-12:00 pm

2 stops19h 10m

$1,860

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 7/10

11:25 pm-5:35 am

3 stops26h 10m

$340

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Wed 5/28

1:09 am-3:25 am

3 stops22h 16m

$550

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sat 6/7

7:05 am-12:55 am

2 stops37h 50m

$638

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Wed 6/4

5:10 am-2:30 pm

3 stops29h 20m

$651

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Fri 6/27

5:05 am-8:00 am

2 stops46h 55m

$665

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 12 results
1
2

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, April is the cheapest month in which you can book a flight from Ontario to Argentina (average of $795). Flying from Ontario to Argentina in December is currently the most expensive (average of $1,260). 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 May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Argentina as you normally would.

Rainfall in Argentina by month

Plan your trip to Argentina by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Argentina ranges from 2.0 - 3.9 inches per month. January is typically the wettest month, when rainfall can reach 3.9 in. June is typically the driest time to visit Argentina when rainfall is around 2.0 in.

Temperature in Argentina by month

Plan your trip to Argentina by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Argentina, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 51.8 F).

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 May 1, 2025.
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Copa Airlines
7.5
Good
1,415 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,252 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Ontario to Argentina one-way?

    The cheapest airlines for a one-way flight from Ontario to Argentina are Avianca ($340), United Airlines ($638), and Delta ($644).

  • 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, April is the cheapest month in which you can book a flight from Ontario to Argentina (average of $795). Flying from Ontario to Argentina in December is currently the most expensive (average of $1,260). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Argentina

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Lima flights
Los Angeles to Jose Maria Cordova Intl flights
Los Angeles to Guarulhos Intl flights
Los Angeles to Bogotá flights
San Francisco to Lima flights
San Francisco to Jose Maria Cordova Intl flights
San Francisco to Ministro Pistarini flights
Los Angeles to Ministro Pistarini flights
Los Angeles to Viracopos flights
Los Angeles to Rio de Janeiro–Galeão Intl flights
San Francisco to Guarulhos Intl flights
Los Angeles to Cartagena flights
Los Angeles to Jorge Newbery flights
Ontario to Jose Maria Cordova Intl flights
Los Angeles to Congonhas flights
Los Angeles to Santiago flights
Los Angeles to Quito flights
San Francisco to Jorge Newbery flights
San Francisco to Rio de Janeiro–Galeão Intl flights
Ontario to Lima flights
San Francisco to Viracopos flights
San Francisco to Bogotá flights
Los Angeles to Santos Dumont flights
Ontario to Bogotá flights
Los Angeles to Cuzco flights
Las Vegas to Viracopos flights
Los Angeles to Recife flights
Las Vegas to Guarulhos Intl flights
San Francisco to Quito flights
Los Angeles to Guayaquil flights
Los Angeles to Cali flights
San Francisco to Santos Dumont flights
Ontario to Guarulhos Intl flights
Burbank to Jose Maria Cordova Intl flights
Los Angeles to Georgetown flights
San Francisco to Cuzco flights
San Francisco to Congonhas flights
Ontario to Ministro Pistarini flights
San Francisco to Cartagena flights
Las Vegas to Congonhas flights
Ontario to Cartagena flights
San Diego to Jose Maria Cordova Intl flights
San Diego to Lima flights
Ontario to Rio de Janeiro–Galeão Intl flights
San Francisco to Santiago flights
Santa Ana to Jose Maria Cordova Intl flights
Las Vegas to Lima flights
Las Vegas to Jose Maria Cordova Intl flights
San Francisco to Guayaquil flights
Los Angeles to Asuncion flights

Top airline flying from Ontario to Argentina

Discover the top airline that operate flights from Ontario to Argentina. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,133Average$1,659FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.