$143 Cheap Flights from Rosario (ROS) to Asuncion (ASU)

View $143 flight on Tue, Aug 26, 2025Opens in a new window

Popular airlines from Rosario (ROS-Rosario - Islas Malvinas Intl.) to Asuncion (ASU-Silvio Pettirossi Intl.)

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Cheap Flights from Rosario to Asuncion (ROS-ASU)

Prices were available within the past 7 days and start at $143 for one-way flights and $286 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aerolineas Argentinas
Fri, Aug 8 - Mon, Aug 11
ROS
Rosario
ASU
Asuncion
$286 Roundtrip, found 1 day ago
$286
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Fri, Aug 8 from Rosario to Asuncion, returning Mon, Aug 11, priced at $286 found 1 day ago
Aerolineas Argentinas
Fri, Aug 8 - Mon, Aug 11
ROS
Rosario
ASU
Asuncion
$318 Roundtrip, found 1 day ago
$318
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Fri, Aug 8 from Rosario to Asuncion, returning Mon, Aug 11, priced at $318 found 1 day ago
Aerolineas Argentinas
Fri, Aug 8 - Mon, Aug 11
ROS
Rosario
ASU
Asuncion
$333 Roundtrip, found 1 day ago
$333
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Fri, Aug 8 from Rosario to Asuncion, returning Mon, Aug 11, priced at $333 found 1 day ago
Aerolineas Argentinas
Tue, Jul 15 - Tue, Jul 22
ROS
Rosario
ASU
Asuncion
$339 Roundtrip, found 3 days ago
$339
Roundtrip
found 3 days ago
Select Aerolineas Argentinas flight, departing Tue, Jul 15 from Rosario to Asuncion, returning Tue, Jul 22, priced at $339 found 3 days ago
Aerolineas Argentinas
Fri, Aug 8 - Mon, Aug 11
ROS
Rosario
ASU
Asuncion
$349 Roundtrip, found 1 day ago
$349
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Fri, Aug 8 from Rosario to Asuncion, returning Mon, Aug 11, priced at $349 found 1 day ago
Aerolineas Argentinas
Fri, Aug 8 - Mon, Aug 11
ROS
Rosario
ASU
Asuncion
$364 Roundtrip, found 1 day ago
$364
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Fri, Aug 8 from Rosario to Asuncion, returning Mon, Aug 11, priced at $364 found 1 day ago
Aerolineas Argentinas
Fri, Aug 8 - Mon, Aug 11
ROS
Rosario
ASU
Asuncion
$374 Roundtrip, found 1 day ago
$374
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Fri, Aug 8 from Rosario to Asuncion, returning Mon, Aug 11, priced at $374 found 1 day ago
Aerolineas Argentinas
Wed, Jul 16 - Tue, Jul 22
ROS
Rosario
ASU
Asuncion
$380 Roundtrip, found 3 days ago
$380
Roundtrip
found 3 days ago
Select Aerolineas Argentinas flight, departing Wed, Jul 16 from Rosario to Asuncion, returning Tue, Jul 22, priced at $380 found 3 days ago
LATAM Airlines Group
Fri, Aug 8 - Mon, Aug 11
ROS
Rosario
ASU
Asuncion
$385 Roundtrip, found 1 day ago
$385
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Fri, Aug 8 from Rosario to Asuncion, returning Mon, Aug 11, priced at $385 found 1 day ago
GOL Linhas Aereas S.A.
Fri, Aug 8 - Mon, Aug 11
ROS
Rosario
ASU
Asuncion
$743 Roundtrip, found 1 day ago
$743
Roundtrip
found 1 day ago
Select GOL Linhas Aereas S.A. flight, departing Fri, Aug 8 from Rosario to Asuncion, returning Mon, Aug 11, priced at $743 found 1 day ago
Flights from Rosario (ROS) to Asuncion (ASU)
Origin airport
Rosario - Islas Malvinas Intl.
Destination airport
Silvio Pettirossi Intl.
Airlines serving
Aerolineas Argentinas, GOL Linhas Aereas S.A., LATAM Airlines Group
Roundtrip price
$285
Distance
565 mi

Rosario to Asuncion Flights

The cheapest times to fly from Rosario to Asuncion

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 Rosario to Asuncion are during the month of August. You can find some of the cheapest flights from Rosario to Asuncion with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rosario to Asuncion

Sunday is one of the best days to book for cheap flights from Rosario to Asuncion: 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 Rosario to Asuncion

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 Rosario to Asuncion in 2025. You can also book with separate airlines for your outbound and return journeys, from $143 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 Rosario to Asuncion 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 Rosario to Asuncion 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 Rosario - Islas Malvinas Intl. Airport (ROS) to Silvio Pettirossi Intl. Airport (ASU) cost?
Discover the latest flight deals from ROS to ASU 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 ROS to ASU?
The cheapest flights from ROS to ASU 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 ROS to ASU?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ROS to ASU. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Rosario - Islas Malvinas Intl. Airport (ROS) to Silvio Pettirossi Intl. Airport (ASU)?
There aren't any daily nonstop flights available from Rosario - Islas Malvinas Intl. Airport (ROS) to Silvio Pettirossi Intl. Airport (ASU). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from ROS to ASU?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary based on various factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Rosario - Islas Malvinas Intl. Airport (ROS) to Silvio Pettirossi Intl. Airport (ASU)?
Choose a flight from Rosario - Islas Malvinas Intl. Airport (ROS) to Silvio Pettirossi Intl. Airport (ASU) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 Rosario - Islas Malvinas Intl. Airport (ROS) to Silvio Pettirossi Intl. Airport (ASU) last-minute?
Holding off until just before your departure to book your flight from ROS to ASU often results in higher prices. While you may come across some last-minute deals, they aren't always guaranteed. Allow some flexibility in your schedule to boost your chances of snagging a bargain.
Is it cheaper to book a ROS to ASU flight and hotel package?
Compared with arranging hotels and flights separately, booking a ROS to ASU flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place will take the hassle out of travel planning. Simply pick your flights and select from our extensive range of hotels, then personalize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Rosario - Islas Malvinas Intl. Airport (ROS) to Silvio Pettirossi Intl. Airport (ASU)?
Typically, you're able to reschedule or cancel your ROS to ASU flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you need more information, visit our Customer Service portal.

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*Available to One Key members.