$670 Cheap Flights from Las Vegas (LAS) to Rosario (ROS)

View $670 flight on Sun, Jun 8, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Las Vegas to Rosario (LAS-ROS)

Prices were available within the past 7 days and start at $670 for one-way flights and $997 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Jun 5 - Mon, Jun 16
LAS
Las Vegas
ROS
Rosario
$997 Roundtrip, found 10 hours ago
$997
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Jun 5 from Las Vegas to Rosario, returning Mon, Jun 16, priced at $997 found 10 hours ago
United
Thu, Jun 5 - Mon, Jun 16
LAS
Las Vegas
ROS
Rosario
$1,008 Roundtrip, found 10 hours ago
$1,008
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Jun 5 from Las Vegas to Rosario, returning Mon, Jun 16, priced at $1,008 found 10 hours ago
United
Thu, Jun 5 - Mon, Jun 16
LAS
Las Vegas
ROS
Rosario
$1,012 Roundtrip, found 10 hours ago
$1,012
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Jun 5 from Las Vegas to Rosario, returning Mon, Jun 16, priced at $1,012 found 10 hours ago
Alaska Airlines
Wed, Jul 23 - Wed, Aug 13
LAS
Las Vegas
ROS
Rosario
$1,043 Roundtrip, found 2 days ago
$1,043
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Jul 23 from Las Vegas to Rosario, returning Wed, Aug 13, priced at $1,043 found 2 days ago
United
Thu, Jun 5 - Mon, Jun 16
LAS
Las Vegas
ROS
Rosario
$1,048 Roundtrip, found 10 hours ago
$1,048
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Jun 5 from Las Vegas to Rosario, returning Mon, Jun 16, priced at $1,048 found 10 hours ago
LATAM Airlines Group
Wed, Jul 23 - Wed, Aug 13
LAS
Las Vegas
ROS
Rosario
$1,049 Roundtrip, found 2 days ago
$1,049
Roundtrip
found 2 days ago
Select LATAM Airlines Group flight, departing Wed, Jul 23 from Las Vegas to Rosario, returning Wed, Aug 13, priced at $1,049 found 2 days ago
Delta
Wed, Jul 23 - Wed, Aug 13
LAS
Las Vegas
ROS
Rosario
$1,056 Roundtrip, found 2 days ago
$1,056
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jul 23 from Las Vegas to Rosario, returning Wed, Aug 13, priced at $1,056 found 2 days ago
Delta
Wed, Jul 23 - Wed, Aug 13
LAS
Las Vegas
ROS
Rosario
$1,062 Roundtrip, found 2 days ago
$1,062
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jul 23 from Las Vegas to Rosario, returning Wed, Aug 13, priced at $1,062 found 2 days ago
United
Thu, Jun 5 - Mon, Jun 16
LAS
Las Vegas
ROS
Rosario
$1,068 Roundtrip, found 10 hours ago
$1,068
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Jun 5 from Las Vegas to Rosario, returning Mon, Jun 16, priced at $1,068 found 10 hours ago
Copa
Thu, Jun 5 - Mon, Jun 16
LAS
Las Vegas
ROS
Rosario
$1,102 Roundtrip, found 10 hours ago
$1,102
Roundtrip
found 10 hours ago
Select Copa flight, departing Thu, Jun 5 from Las Vegas to Rosario, returning Mon, Jun 16, priced at $1,102 found 10 hours ago

Frequently asked questions

How much does a flight from Harry Reid Intl. Airport (LAS) to Rosario - Islas Malvinas Intl. Airport (ROS) cost?
Discover the latest flight deals from LAS to ROS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from LAS to ROS?
The cheapest flights from LAS to ROS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from LAS to ROS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from LAS to ROS. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Harry Reid Intl. Airport (LAS) to Rosario - Islas Malvinas Intl. Airport (ROS)?
Direct flights from Harry Reid Intl. Airport (LAS) to Rosario - Islas Malvinas Intl. Airport (ROS) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from LAS to ROS?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change depending on various factors, such as the time of year 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 Harry Reid Intl. Airport (LAS) to Rosario - Islas Malvinas Intl. Airport (ROS)?
To avoid possible delays on the Harry Reid Intl. Airport (LAS) to Rosario - Islas Malvinas Intl. Airport (ROS) route, travel before 3 PM. Later flights are 22% more likely to be canceled.**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 Harry Reid Intl. Airport (LAS) to Rosario - Islas Malvinas Intl. Airport (ROS) last-minute?
Last-minute bookings from LAS to ROS are typically more expensive. For the lowest prices, start searching for flights well in advance. That said, if you can play around with your travel dates, it’s possible to score a cheap fare just before your departure.
Is it cheaper to book a LAS to ROS flight and hotel package?
Compared with arranging hotels and flights separately, booking a LAS to ROS flight and hotel package with Expedia could result in significant savings. What’s more, having everything in one place will take the stress out of travel planning. Simply secure your flights and select from our extensive range of hotels, then customize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Harry Reid Intl. Airport (LAS) to Rosario - Islas Malvinas Intl. Airport (ROS)?
In most cases, you’re able to reschedule or cancel your LAS to ROS flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline’s fees and policies on flight changes, or if you’d like further details, head to our Customer Service portal.
*Available to One Key members.