Cheap flights from Buenos Aires to Los Angeles from $628

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 9/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Buenos Aires to Los Angeles

Cheap round-trip flights

United Airlines Logo
11:55 pm - 9:21 pmEZE-ONT
26h 26m1 stop
United Airlines Logo
6:02 am - 9:20 amONT-EZE
22h 18m1 stop
$1,109United Airlines
Find Deal
Wed, Jan 21 - Wed, Feb 4
United Airlines Logo
10:05 pm - 9:21 pmEZE-ONT
28h 16m1 stop
United Airlines Logo
6:00 am - 7:20 amONT-EZE
20h 20m2 stops
$1,117United Airlines
Find Deal
Wed, Jan 21 - Wed, Feb 4
Avianca Logo
1:40 am - 9:55 pmEZE-ONT
24h 15m2 stops
Avianca Logo
11:25 pm - 12:10 amONT-EZE
20h 45m2 stops
$1,194Avianca
Find Deal
Mon, Sep 15 - Thu, Oct 23
Avianca Logo
1:40 am - 9:55 pmEZE-ONT
24h 15m2 stops
Avianca Logo
11:25 pm - 5:35 amONT-EZE
26h 10m3 stops
$1,202Avianca
Find Deal
Mon, Sep 15 - Thu, Oct 23
Avianca Logo
1:40 am - 9:55 pmEZE-ONT
24h 15m2 stops
Avianca Logo
11:25 pm - 12:10 amONT-EZE
20h 45m2 stops
$1,228Avianca
Find Deal
Wed, Aug 27 - Thu, Sep 4
Avianca Logo
1:40 am - 9:55 pmEZE-ONT
24h 15m2 stops
Avianca Logo
11:25 pm - 1:25 amONT-EZE
22h 00m3 stops
$1,229Avianca
Find Deal
Wed, Aug 27 - Thu, Sep 4
Avianca Logo
1:40 am - 9:55 pmEZE-ONT
24h 15m2 stops
Avianca Logo
11:25 pm - 5:45 amONT-EZE
26h 20m2 stops
$1,238Avianca
Find Deal
Mon, Sep 8 - Tue, Sep 16
 Logo
3:55 am - 11:13 pmEZE-ONT
23h 18m3 stops
 Logo
1:09 am - 3:45 amONT-EZE
22h 36m3 stops
$1,499
Find Deal
Tue, Oct 14 - Mon, Oct 27
Delta Logo
8:10 pm - 10:26 amEZE-ONT
18h 16m1 stop
Delta Logo
11:36 am - 9:00 amONT-EZE
17h 24m1 stop
$1,550Delta
Find Deal
Thu, Oct 9 - Sun, Oct 26
Delta Logo
8:10 pm - 10:26 amEZE-ONT
18h 16m1 stop
Delta Logo
11:36 am - 9:00 amONT-EZE
17h 24m1 stop
$1,569Delta
Find Deal
Thu, Oct 9 - Sun, Oct 26

United Airlines flights from Buenos Aires to Ontario

Our best United Airlines deals on Buenos Aires to Ontario flight tickets
United Airlines
Jan 21
EZE11:55 pmBuenos Aires Ministro Pistarini
26h 26m
1 stop
ONT9:21 pmOntario
Feb 4
ONT6:02 amOntario
22h 18m
1 stop
EZE9:20 amBuenos Aires Ministro Pistarini
United Airlines
Jan 21
EZE10:05 pmBuenos Aires Ministro Pistarini
28h 16m
1 stop
ONT9:21 pmOntario
Feb 4
ONT6:00 amOntario
20h 20m
2 stops
EZE7:20 amBuenos Aires Ministro Pistarini
United Airlines
Dec 10
EZE10:05 pmBuenos Aires Ministro Pistarini
19h 12m
2 stops
ONT12:17 pmOntario
Jan 13
ONT6:02 amOntario
20h 18m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini

Avianca flights from Buenos Aires to Ontario

Our best Avianca deals on Buenos Aires to Ontario flight tickets
Avianca
Sep 15
EZE1:40 amBuenos Aires Ministro Pistarini
24h 15m
2 stops
ONT9:55 pmOntario
Oct 23
ONT11:25 pmOntario
20h 45m
2 stops
EZE12:10 amBuenos Aires Ministro Pistarini
Avianca
Sep 15
EZE1:40 amBuenos Aires Ministro Pistarini
24h 15m
2 stops
ONT9:55 pmOntario
Oct 23
ONT11:25 pmOntario
26h 10m
3 stops
EZE5:35 amBuenos Aires Ministro Pistarini
Avianca
Aug 27
EZE1:40 amBuenos Aires Ministro Pistarini
24h 15m
2 stops
ONT9:55 pmOntario
Sep 4
ONT11:25 pmOntario
20h 45m
2 stops
EZE12:10 amBuenos Aires Ministro Pistarini

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 July 31, 2025.
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

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Wed 1/21

11:55 pm-9:21 pm

1 stop26h 26m

Ontario

Wed 2/4

6:02 am-9:20 am

1 stop22h 18m

$1,109

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Wed 1/21

10:05 pm-9:21 pm

1 stop28h 16m

Ontario

Wed 2/4

6:00 am-7:20 am

2 stops20h 20m

$1,117

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Mon 9/15

1:40 am-9:55 pm

2 stops24h 15m

Ontario

Thu 10/23

11:25 pm-12:10 am

2 stops20h 45m

$1,194

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Mon 9/15

1:40 am-9:55 pm

2 stops24h 15m

Ontario

Thu 10/23

11:25 pm-5:35 am

3 stops26h 10m

$1,202

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Wed 8/27

1:40 am-9:55 pm

2 stops24h 15m

Ontario

Thu 9/4

11:25 pm-12:10 am

2 stops20h 45m

$1,228

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Wed 8/27

1:40 am-9:55 pm

2 stops24h 15m

Ontario

Thu 9/4

11:25 pm-1:25 am

3 stops22h 00m

$1,229

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Mon 9/8

1:40 am-9:55 pm

2 stops24h 15m

Ontario

Tue 9/16

11:25 pm-5:45 am

2 stops26h 20m

$1,238

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Tue 10/14

3:55 am-11:13 pm

3 stops23h 18m

Ontario

Mon 10/27

1:09 am-3:45 am

3 stops22h 36m

$1,499

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Thu 10/9

8:10 pm-10:26 am

1 stop18h 16m

Ontario

Sun 10/26

11:36 am-9:00 am

1 stop17h 24m

$1,550

Buenos AiresOntario

EZE - ONT

EZEONT

Buenos Aires Ministro Pistarini

Thu 10/9

8:10 pm-10:26 am

1 stop18h 16m

Ontario

Sun 10/26

11:36 am-9:00 am

1 stop17h 24m

$1,569

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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

What airlines fly to Ontario?

LATAM Airlines, American Airlines and United Airlines 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 38% 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

Best Price Found

$628

Fastest flight time

18h 16m

Direct flights

None

Airports in Ontario

1 airport
The best one-way flight to Ontario from Buenos Aires in the past 72 hours is $628. The best round-trip flight deal from Buenos Aires to Ontario found on momondo in the last 72 hours is $1,109.
The fastest flight from Buenos Aires to Ontario takes 18h 16m
There are no direct flights from Buenos Aires to Ontario. Popular non-direct route for this connection is Buenos Aires Ministro Pistarini Airport - Ontario Airport.
There is 1 airport near Ontario: Ontario (ONT)

  • 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 16m.

  • 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.


An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/5
Tue 8/12

Find better results for your trip to the United States