HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Argentina

$329+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EZE
Aug 13 — Aug 201
Thu 8/13
Thu 8/20
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

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 July 14, 2026.

This Avianca deal was found by Cheapflights users on 7/9. 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 stops20h 50m
Avianca
Tue 8/187:10 am
EZE
-
ONT
2 stops18h 35m
Avianca
Deal found 7/9$772
This Avianca deal was found by Cheapflights users on 7/9. 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 9/1211:35 pm
ONT
-
EZE
2 stops20h 50m
Avianca
Tue 9/157:10 am
EZE
-
ONT
2 stops18h 35m
Avianca
Deal found 7/9$781
This SmartFares deal was found by Cheapflights users on 7/11. 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.
Thu 10/2211:35 pm
ONT
-
EZE
2 stops36h 05m
Avianca
Wed 10/284:55 pm
EZE
-
ONT
2 stops33h 00m
Avianca
Deal found 7/11$794
This oojo deal was found by Cheapflights users on 7/12. 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.
Sat 9/1911:35 pm
ONT
-
EZE
2 stops36h 05m
Avianca
Fri 9/251:35 am
EZE
-
ONT
2 stops24h 10m
Avianca
Deal found 7/12$798
This Mytrip deal was found by Cheapflights users on 7/13. 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.
Tue 10/69:36 pm
ONT
-
EZE
3 stops29h 09m
Multiple Airlines
Mon 10/262:40 am
EZE
-
ONT
2 stops23h 15m
Multiple Airlines
Deal found 7/13$801
This oojo deal was found by Cheapflights users on 7/11. 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 8/1111:35 pm
ONT
-
EZE
2 stops21h 45m
Avianca
Wed 8/191:35 am
EZE
-
ONT
2 stops24h 10m
Avianca
Deal found 7/11$802
This Gotogate deal was found by Cheapflights users on 7/10. 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.
Tue 9/111:35 pm
ONT
-
EZE
2 stops21h 45m
Avianca
Wed 9/302:30 am
EZE
-
ONT
2 stops23h 15m
Avianca
Deal found 7/10$805
This FlightHub deal was found by Cheapflights users on 7/11. 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 10/2011:35 pm
ONT
-
EZE
2 stops21h 45m
Avianca
Wed 11/112:40 am
EZE
-
ONT
2 stops23h 15m
Avianca
Deal found 7/11$806
This Gotogate deal was found by Cheapflights users on 7/11. 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.
Thu 9/1011:35 pm
ONT
-
EZE
2 stops20h 50m
Avianca
Wed 9/164:50 pm
EZE
-
ONT
2 stops32h 55m
Avianca
Deal found 7/11$810
This Justfly.com deal was found by Cheapflights users on 7/9. 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 7/2111:35 pm
ONT
-
EZE
2 stops21h 45m
Avianca
Mon 9/214:50 pm
EZE
-
ONT
2 stops32h 55m
Avianca
Deal found 7/9$816
This Avianca deal was found by Cheapflights users on 7/9. 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 stops36h 05m
Avianca
Mon 8/247:10 am
EZE
-
ONT
2 stops42h 35m
Avianca
Deal found 7/9$844
This Mytrip deal was found by Cheapflights users on 7/11. 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.
Wed 9/3012:55 am
ONT
-
MDZ
3 stops25h 25m
Multiple Airlines
Wed 10/73:40 pm
MDZ
-
ONT
3 stops34h 05m
Multiple Airlines
Deal found 7/11$1,243

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 July 14, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$772
(Avianca)

One-way from

$329
(Mytrip)

Popular in

December

Cheapest in

October

Average price

$976
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. 9% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 14, 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 8/17

6:00 am-8:00 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Mon 8/24

9:00 pm-12:50 pm

2 stops19h 50m

$1,110

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Wed 8/26

9:01 am-8:00 am

2 stops18h 59m

Buenos Aires Ministro Pistarini

Mon 9/21

9:00 pm-2:01 pm

2 stops21h 01m

$1,110

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 8/6

5:45 am-8:00 am

1 stop22h 15m

Buenos Aires Ministro Pistarini

Wed 8/12

9:00 pm-12:50 pm

2 stops19h 50m

$1,150

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Thu 8/6

5:45 am-8:00 am

1 stop22h 15m

Buenos Aires Ministro Pistarini

Mon 8/10

9:00 pm-8:53 pm

2 stops27h 53m

$1,150

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 7/26

1:50 pm-8:00 am

2 stops38h 10m

Buenos Aires Ministro Pistarini

Wed 8/5

9:00 pm-10:37 pm

2 stops29h 37m

$1,172
Quickest round-trip

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Tue 1/5

6:00 am-7:20 am

1 stop20h 20m

Buenos Aires Ministro Pistarini

Tue 1/19

10:05 pm-12:20 pm

2 stops19h 15m

$1,190

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sun 10/18

6:00 am-8:00 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Sun 11/15

11:55 pm-3:23 pm

2 stops20h 28m

$1,220

OntarioMendoza

ONT - MDZ

ONTMDZ

Ontario

Wed 9/30

12:55 am-6:20 am

3 stops25h 25m

Mendoza El Plumerillo

Wed 10/7

3:40 pm-9:45 pm

3 stops34h 05m

$1,243

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Fri 8/28

6:00 am-8:00 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Sat 9/12

9:00 pm-9:59 pm

1 stop28h 59m

$1,280

OntarioBuenos Aires

ONT - EZE

ONTEZE

Ontario

Sat 8/22

8:00 am-8:00 am

2 stops20h 00m

Buenos Aires Ministro Pistarini

Sat 9/12

9:00 pm-9:59 pm

1 stop28h 59m

$1,284

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 29 resultsSorted by cheapest first
1
2
3

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 18h 59m. 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

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.

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.