$56 Cheap Flights from Buenos Aires (AEP) to Posadas (PSS)

View $56 flight on Thu, Jun 26, 2025Opens in a new window

Popular airlines from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)

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Find available prices by choosing your travel dates.

Cheap Flights from Buenos Aires to Posadas (AEP-PSS)

Prices were available within the past 7 days and start at $56 for one-way flights and $112 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aerolineas Argentinas
Mon, Feb 9 - Sun, Feb 15
AEP
Buenos Aires
PSS
Posadas
$112 Roundtrip, found 3 days ago
$112
Roundtrip
found 3 days ago
Select Aerolineas Argentinas flight, departing Mon, Feb 9 from Buenos Aires to Posadas, returning Sun, Feb 15, priced at $112 found 3 days ago
Aerolineas Argentinas
Tue, Aug 26 - Fri, Sep 12
AEP
Buenos Aires
PSS
Posadas
$119 Roundtrip, found 1 day ago
$119
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Tue, Aug 26 from Buenos Aires to Posadas, returning Fri, Sep 12, priced at $119 found 1 day ago
Aerolineas Argentinas
Fri, May 23 - Mon, May 26
AEP
Buenos Aires
PSS
Posadas
$124 Roundtrip, found 2 days ago
$124
Roundtrip
found 2 days ago
Select Aerolineas Argentinas flight, departing Fri, May 23 from Buenos Aires to Posadas, returning Mon, May 26, priced at $124 found 2 days ago
Aerolineas Argentinas
Sat, May 31 - Fri, Jun 6
AEP
Buenos Aires
PSS
Posadas
$126 Roundtrip, found 18 hours ago
$126
Roundtrip
found 18 hours ago
Select Aerolineas Argentinas flight, departing Sat, May 31 from Buenos Aires to Posadas, returning Fri, Jun 6, priced at $126 found 18 hours ago
Aerolineas Argentinas
Tue, Aug 5 - Sun, Aug 24
AEP
Buenos Aires
PSS
Posadas
$126 Roundtrip, found 1 day ago
$126
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Tue, Aug 5 from Buenos Aires to Posadas, returning Sun, Aug 24, priced at $126 found 1 day ago
Aerolineas Argentinas
Sat, May 31 - Fri, Jun 6
AEP
Buenos Aires
PSS
Posadas
$131 Roundtrip, found 18 hours ago
$131
Roundtrip
found 18 hours ago
Select Aerolineas Argentinas flight, departing Sat, May 31 from Buenos Aires to Posadas, returning Fri, Jun 6, priced at $131 found 18 hours ago
Aerolineas Argentinas
Thu, Jun 26 - Sat, Jun 28
AEP
Buenos Aires
PSS
Posadas
$136 Roundtrip, found 9 hours ago
$136
Roundtrip
found 9 hours ago
Select Aerolineas Argentinas flight, departing Thu, Jun 26 from Buenos Aires to Posadas, returning Sat, Jun 28, priced at $136 found 9 hours ago
Aerolineas Argentinas
Mon, May 19 - Tue, Aug 19
AEP
Buenos Aires
PSS
Posadas
$136 Roundtrip, found 1 day ago
$136
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Mon, May 19 from Buenos Aires to Posadas, returning Tue, Aug 19, priced at $136 found 1 day ago
Aerolineas Argentinas
Sat, Jul 12 - Wed, Jul 30
AEP
Buenos Aires
PSS
Posadas
$137 Roundtrip, found 1 day ago
$137
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Sat, Jul 12 from Buenos Aires to Posadas, returning Wed, Jul 30, priced at $137 found 1 day ago
Aerolineas Argentinas
Sun, May 25 - Mon, May 26
AEP
Buenos Aires
PSS
Posadas
$142 Roundtrip, found 3 days ago
$142
Roundtrip
found 3 days ago
Select Aerolineas Argentinas flight, departing Sun, May 25 from Buenos Aires to Posadas, returning Mon, May 26, priced at $142 found 3 days ago
Flights from Buenos Aires (AEP) to Posadas (PSS)
Origin airport
Aeroparque Jorge Newbery
Destination airport
Libertador General Jose de San Martin
Airlines serving
Aerolineas Argentinas
Roundtrip price
$112
Distance
515 mi

Buenos Aires to Posadas Flights

The cheapest times to fly from Buenos Aires to Posadas

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 Buenos Aires to Posadas are during the month of February. You can find some of the cheapest flights from Buenos Aires to Posadas with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Buenos Aires to Posadas

Sunday is one of the best days to book for cheap flights from Buenos Aires to Posadas: 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 Buenos Aires to Posadas

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 Buenos Aires to Posadas in 2025. You can also book with separate airlines for your outbound and return journeys, from $56 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 Buenos Aires to Posadas 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 Buenos Aires to Posadas 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 Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS) cost?
You can score cheap return fares from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS) starting from $112. Reserve your seat and be on your way. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Aerolineas Argentinas flight leaving AEP on May 19 2025 and touching down at PSS. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from AEP to PSS?
The cheapest flights from AEP to PSS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS)?
Jump on a nonstop flight with Aerolineas Argentinas and go straight from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS).
What is the cheapest airline that flies from AEP to PSS?
With fares starting at $56 for a one-way journey from AEP to PSS, Aerolineas Argentinas is currently the cheapest airline for this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from AEP on June 5 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS)?
When flying out of Aeroparque Jorge Newbery Airport (AEP), you can take your pick from an average of 2 daily direct flights to Libertador General Jose de San Martin Airport (PSS).
What are the most popular departure times for flights from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS)?
More passengers fly between AEP and PSS at 8 AM than at any other time. Looking for a quieter experience? Travel outside of rush hours and you’re likely to save on your fare as well.
What day of the week has the most flights from AEP to PSS?
If you travel on a Thursday, you’ll get the largest range of options for flights from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS).
What is the earliest flight from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS)?
Aeroparque Jorge Newbery Airport (AEP)’s earliest flight to Libertador General Jose de San Martin Airport (PSS) departs at approximately 6:45AM UTC-3. With a travel time of 1h 40m, you’ll arrive at around 8:25AM UTC-3.
How long does it take to fly from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS)?
It takes about 1 hour and 39 minutes to cover the 520 mi from AEP to PSS.
What airline has the least delays from AEP to PSS?
Flybondi has the strongest track record for on-time direct flights from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS), with an on-time score of 84%. Use the Expedia App to view your flight status before you leave and get immediate updates about any changes.
What is the best time to fly from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS)?
To avoid possible delays on the Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**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.
What airports do you fly into for Posadas from Aeroparque Jorge Newbery Airport (AEP)?
Compare your flight options from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS). This is the only airport in Posadas you can land at if you’re taking a direct flight.
Is it cheaper to buy a plane ticket from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS) last-minute?
Booking your ticket from AEP to PSS shortly before your journey is generally more expensive. However, if you’re flexible with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book an AEP to PSS flight and hotel package?
You can save money by booking an AEP to PSS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one place. Once you’ve selected your ideal accommodations and flights, consider adding extras including activities, tours and car rentals.
Can I cancel or change the date of my flight from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS)?
Usually, it’s possible to cancel or reschedule your AEP to PSS flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find more information on our Customer Service portal.

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