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Cheap flights from Buenos Aires to Los Angeles from $441

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buenos Aires to Los Angeles departing on 6/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Buenos Aires to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Avianca Logo
7:10 am - 9:45 pm
EZE
-
ONT
18h 35m
2 stops
Avianca Logo
11:35 pm - 1:20 am
ONT
-
EZE
21h 45m
2 stops
$812Avianca
Tue, May 26 - Thu, Jun 11
Avianca Logo
2:30 am - 9:45 pm
EZE
-
ONT
23h 15m
2 stops
Avianca Logo
11:35 pm - 1:20 am
ONT
-
EZE
21h 45m
2 stops
$831Avianca
Mon, Aug 10 - Tue, Aug 18
Avianca Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
Avianca Logo
11:35 pm - 5:40 am
ONT
-
EZE
26h 05m
2 stops
$860Avianca
Fri, Aug 14 - Sat, Aug 29
Avianca Logo
2:30 am - 9:45 pm
EZE
-
ONT
23h 15m
2 stops
Avianca Logo
11:35 pm - 3:40 pm
ONT
-
EZE
36h 05m
2 stops
$884Avianca
Wed, May 13 - Sat, May 30
Avianca Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
Avianca Logo
11:35 pm - 3:40 pm
ONT
-
EZE
36h 05m
2 stops
$904Avianca
Wed, May 20 - Tue, Jun 2
Multiple Airlines Logo
7:10 am - 9:45 pm
EZE
-
ONT
18h 35m
2 stops
Multiple Airlines Logo
9:36 pm - 3:00 am
ONT
-
EZE
25h 24m
3 stops
$939Multiple Airlines
Thu, Jun 4 - Mon, Jun 8
Avianca Logo
7:10 am - 9:45 pm
EZE
-
ONT
18h 35m
2 stops
Avianca Logo
11:35 pm - 5:40 am
ONT
-
EZE
26h 05m
2 stops
$949Avianca
Thu, Apr 30 - Tue, May 5
Avianca Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
Avianca Logo
11:35 pm - 1:20 am
ONT
-
EZE
21h 45m
2 stops
$951Avianca
Wed, Apr 22 - Thu, Apr 30
Avianca Logo
4:50 pm - 9:45 pm
EZE
-
ONT
32h 55m
2 stops
Avianca Logo
11:35 pm - 3:40 pm
ONT
-
EZE
36h 05m
2 stops
$953Avianca
Mon, May 18 - Sat, May 30
Avianca Logo
2:30 am - 9:45 pm
EZE
-
ONT
23h 15m
2 stops
Avianca Logo
11:35 pm - 5:40 am
ONT
-
EZE
26h 05m
2 stops
$969Avianca
Fri, May 29 - Sat, Aug 29

Avianca flights from Buenos Aires to Ontario

Our best Avianca deals on Buenos Aires to Ontario flight tickets
Avianca
May 26
EZE7:10 amBuenos Aires Ministro Pistarini
18h 35m
2 stops
ONT9:45 pmOntario
Jun 11
ONT11:35 pmOntario
21h 45m
2 stops
EZE1:20 amBuenos Aires Ministro Pistarini
$812
Avianca
Aug 10
EZE2:30 amBuenos Aires Ministro Pistarini
23h 15m
2 stops
ONT9:45 pmOntario
Aug 18
ONT11:35 pmOntario
21h 45m
2 stops
EZE1:20 amBuenos Aires Ministro Pistarini
$831
Avianca
Aug 14
EZE4:50 pmBuenos Aires Ministro Pistarini
32h 55m
2 stops
ONT9:45 pmOntario
Aug 29
ONT11:35 pmOntario
26h 05m
2 stops
EZE5:40 amBuenos Aires Ministro Pistarini
$860

United Airlines flights from Buenos Aires to Ontario

Our best United Airlines deals on Buenos Aires to Ontario flight tickets
United Airlines
Mar 24
EZE9:05 pmBuenos Aires Ministro Pistarini
19h 13m
2 stops
ONT12:18 pmOntario
Apr 23
ONT6:05 amOntario
21h 55m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
$1,765
United Airlines
Mar 18
EZE9:05 pmBuenos Aires Ministro Pistarini
19h 13m
2 stops
ONT12:18 pmOntario
Apr 7
ONT6:00 amOntario
22h 00m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
$1,768
United Airlines
Mar 18
EZE9:05 pmBuenos Aires Ministro Pistarini
19h 13m
2 stops
ONT12:18 pmOntario
Apr 6
ONT6:05 amOntario
21h 55m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
$1,772

momondo Fare Finder

 
Customize your flight search to find flights from Buenos Aires to Ontario 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, momondo users made 832,500 searches. Data last updated March 11, 2026.
Use the filters below to find and compare flights from Buenos Aires to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Tue 5/26

7:10 am-9:45 pm

2 stops18h 35m

Ontario

Thu 6/11

11:35 pm-1:20 am

2 stops21h 45m

$812

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Mon 8/10

2:30 am-9:45 pm

2 stops23h 15m

Ontario

Tue 8/18

11:35 pm-1:20 am

2 stops21h 45m

$831

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Fri 8/14

4:50 pm-9:45 pm

2 stops32h 55m

Ontario

Sat 8/29

11:35 pm-5:40 am

2 stops26h 05m

$860

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Wed 5/13

2:30 am-9:45 pm

2 stops23h 15m

Ontario

Sat 5/30

11:35 pm-3:40 pm

2 stops36h 05m

$884

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Wed 5/20

4:50 pm-9:45 pm

2 stops32h 55m

Ontario

Tue 6/2

11:35 pm-3:40 pm

2 stops36h 05m

$904

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Thu 6/4

7:10 am-9:45 pm

2 stops18h 35m

Ontario

Mon 6/8

9:36 pm-3:00 am

3 stops25h 24m

$939

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Thu 4/30

7:10 am-9:45 pm

2 stops18h 35m

Ontario

Tue 5/5

11:35 pm-5:40 am

2 stops26h 05m

$949

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Wed 4/22

4:50 pm-9:45 pm

2 stops32h 55m

Ontario

Thu 4/30

11:35 pm-1:20 am

2 stops21h 45m

$951

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Mon 5/18

4:50 pm-9:45 pm

2 stops32h 55m

Ontario

Sat 5/30

11:35 pm-3:40 pm

2 stops36h 05m

$953

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Fri 5/29

2:30 am-9:45 pm

2 stops23h 15m

Ontario

Sat 8/29

11:35 pm-5:40 am

2 stops26h 05m

$969

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

How to get the cheapest flight ticket from Buenos Aires to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Buenos Aires to Ontario?

Avianca and United Airlines are the most popular carriers operating from Buenos Aires to Ontario

What airlines fly to Ontario?

LATAM Airlines, American Airlines and Delta are the top three most popular airlines that fly to Ontario from Buenos Aires according to our data. LATAM Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 6 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When to book flights from Buenos Aires to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Buenos Aires to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Buenos Aires to Ontario (BUE to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Buenos Aires to Ontario

Fastest flight time

18h 35m

Direct flights

None
The fastest flight from Buenos Aires to Ontario takes 18h 35m
There are no direct flights from Buenos Aires to Ontario. There are no popular flight routes from Buenos Aires to Ontario.
Search flight deals

  • How far is Buenos Aires to Ontario by plane?

    Buenos Aires and Ontario are 6094.6 mi apart from one another. By plane, this route typically takes 18h 35m.

  • When did momondo last update prices for flights from Buenos Aires to Ontario Airport?

    Prices for flights from Buenos Aires to Ontario Airport refresh daily.

  • How old do you have to be to fly from Buenos Aires to Ontario Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Buenos Aires to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Buenos Aires to Ontario?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Buenos Aires to Ontario. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Buenos Aires to Ontario with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Ontario from Buenos Aires with this policy.

How can momondo help me find flights from Buenos Aires to Ontario?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Buenos Aires to Ontario.

I’m not ready to book a flight from Buenos Aires to Ontario right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Buenos Aires to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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