$334 Cheap Flights from Los Angeles (LAX) to Rosario (ROS)

View $334 flight on Mon, Nov 17, 2025Opens in a new window

Popular airlines from Los Angeles Intl. (LAX) to Rosario (ROS-Rosario - Islas Malvinas Intl.)

Cheap Flights from Los Angeles to Rosario (LAX-ROS)

Prices were available within the past 7 days and start at $334 for one-way flights and $752 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Jan 11 - Thu, Mar 12
LAX
Los Angeles
ROS
Rosario
$752 Roundtrip, found 18 hours ago
$752
Roundtrip
found 18 hours ago
Select United flight, departing Sun, Jan 11 from Los Angeles to Rosario, returning Thu, Mar 12, priced at $752 found 18 hours ago
United
Sun, Jan 11 - Wed, Mar 11
LAX
Los Angeles
ROS
Rosario
$757 Roundtrip, found 18 hours ago
$757
Roundtrip
found 18 hours ago
Select United flight, departing Sun, Jan 11 from Los Angeles to Rosario, returning Wed, Mar 11, priced at $757 found 18 hours ago
United
Thu, Apr 23 - Tue, May 5
LAX
Los Angeles
ROS
Rosario
$777 Roundtrip, found 4 days ago
$777
Roundtrip
found 4 days ago
Select United flight, departing Thu, Apr 23 from Los Angeles to Rosario, returning Tue, May 5, priced at $777 found 4 days ago
United
Thu, Apr 23 - Wed, May 6
LAX
Los Angeles
ROS
Rosario
$782 Roundtrip, found 4 days ago
$782
Roundtrip
found 4 days ago
Select United flight, departing Thu, Apr 23 from Los Angeles to Rosario, returning Wed, May 6, priced at $782 found 4 days ago
United
Thu, Apr 23 - Mon, May 4
LAX
Los Angeles
ROS
Rosario
$802 Roundtrip, found 4 days ago
$802
Roundtrip
found 4 days ago
Select United flight, departing Thu, Apr 23 from Los Angeles to Rosario, returning Mon, May 4, priced at $802 found 4 days ago
United
Mon, Feb 9 - Sun, Mar 1
LAX
Los Angeles
ROS
Rosario
$852 Roundtrip, found 4 days ago
$852
Roundtrip
found 4 days ago
Select United flight, departing Mon, Feb 9 from Los Angeles to Rosario, returning Sun, Mar 1, priced at $852 found 4 days ago
American Airlines
Mon, Jan 12 - Thu, Mar 12
LAX
Los Angeles
ROS
Rosario
$860 Roundtrip, found 18 hours ago
$860
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Mon, Jan 12 from Los Angeles to Rosario, returning Thu, Mar 12, priced at $860 found 18 hours ago
LATAM Airlines Group
Sat, Jan 3 - Wed, Jan 21
LAX
Los Angeles
ROS
Rosario
$906 Roundtrip, found 1 day ago
$906
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Sat, Jan 3 from Los Angeles to Rosario, returning Wed, Jan 21, priced at $906 found 1 day ago
Copa
Mon, Jan 12 - Thu, Mar 12
LAX
Los Angeles
ROS
Rosario
$947 Roundtrip, found 18 hours ago
$947
Roundtrip
found 18 hours ago
Select Copa flight, departing Mon, Jan 12 from Los Angeles to Rosario, returning Thu, Mar 12, priced at $947 found 18 hours ago
GOL Linhas Aereas S.A.
Thu, Mar 5 - Mon, Mar 16
LAX
Los Angeles
ROS
Rosario
$1,200 Roundtrip, found 4 days ago
$1,200
Roundtrip
found 4 days ago
Select GOL Linhas Aereas S.A. flight, departing Thu, Mar 5 from Los Angeles to Rosario, returning Mon, Mar 16, priced at $1,200 found 4 days ago
Flights from Los Angeles (LAX) to Rosario (ROS)
Origin airport
Los Angeles Intl.
Destination airport
Rosario - Islas Malvinas Intl.
Airlines serving
American Airlines, Copa, GOL Linhas Aereas S.A., LATAM Airlines Group
Roundtrip price
$751
Distance
5942 mi

Los Angeles to Rosario Flights

The cheapest times to fly from Los Angeles to Rosario

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Los Angeles to Rosario are during the month of January. You can find some of the cheapest flights from Los Angeles to Rosario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Los Angeles to Rosario

Sunday is one of the best days to book for cheap flights from Los Angeles to Rosario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Los Angeles to Rosario

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Los Angeles to Rosario in 2025. You can also book with separate airlines for your outbound and return journeys, from $334 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Los Angeles to Rosario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Los Angeles to Rosario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Los Angeles Intl. Airport (LAX) to Rosario - Islas Malvinas Intl. Airport (ROS) cost?
Lock in a cheap one-way flight from $334 or cheap return flight from $752 from Los Angeles Intl. Airport (LAX) to Rosario - Islas Malvinas Intl. Airport (ROS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Los Angeles Intl. Airport (LAX) to Rosario - Islas Malvinas Intl. Airport (ROS)?
The cheapest month to fly from LAX to ROS is January, when demand is low. Off-peak season is often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Los Angeles Intl. Airport (LAX) to Rosario - Islas Malvinas Intl. Airport (ROS)?
To find the cheapest airline flying from LAX to ROS, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Los Angeles Intl. Airport (LAX) to Rosario - Islas Malvinas Intl. Airport (ROS)?
Direct flights from Los Angeles Intl. Airport (LAX) to Rosario - Islas Malvinas Intl. Airport (ROS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from LAX to ROS?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change depending on a range of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles Intl. Airport (LAX) to Rosario - Islas Malvinas Intl. Airport (ROS)?
To arrive at Rosario - Islas Malvinas Intl. Airport (ROS) without delays, select a flight that leaves from Los Angeles Intl. Airport (LAX) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles Intl. Airport (LAX) to Rosario - Islas Malvinas Intl. Airport (ROS) last-minute?
Booking your ticket from LAX to ROS just before your trip is generally more expensive. But if there's some wiggle room with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book a LAX to ROS flight and hotel package?
You'll typically save money by securing a LAX to ROS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've chosen your ideal flights and accommodations, you can add extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Los Angeles Intl. Airport (LAX) to Rosario - Islas Malvinas Intl. Airport (ROS)?
Typically, you can reschedule or cancel your LAX to ROS flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you want further details, head to our Customer Service portal.

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*Available to One Key members.