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

View $56 flight on Fri, Oct 17, 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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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 $125 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aerolineas Argentinas
Mon, May 4 - Fri, May 8
AEP
Buenos Aires
PSS
Posadas
$125 Roundtrip, found 3 days ago
$125
Roundtrip
found 3 days ago
Select Aerolineas Argentinas flight, departing Mon, May 4 from Buenos Aires to Posadas, returning Fri, May 8, priced at $125 found 3 days ago
Aerolineas Argentinas
Mon, May 4 - Fri, May 8
AEP
Buenos Aires
PSS
Posadas
$131 Roundtrip, found 3 days ago
$131
Roundtrip
found 3 days ago
Select Aerolineas Argentinas flight, departing Mon, May 4 from Buenos Aires to Posadas, returning Fri, May 8, priced at $131 found 3 days ago
Aerolineas Argentinas
Thu, Feb 12 - Wed, Feb 18
AEP
Buenos Aires
PSS
Posadas
$137 Roundtrip, found 6 days ago
$137
Roundtrip
found 6 days ago
Select Aerolineas Argentinas flight, departing Thu, Feb 12 from Buenos Aires to Posadas, returning Wed, Feb 18, priced at $137 found 6 days ago
Aerolineas Argentinas
Fri, Oct 24 - Tue, Nov 4
AEP
Buenos Aires
PSS
Posadas
$139 Roundtrip, found 23 hours ago
$139
Roundtrip
found 23 hours ago
Select Aerolineas Argentinas flight, departing Fri, Oct 24 from Buenos Aires to Posadas, returning Tue, Nov 4, priced at $139 found 23 hours ago
Aerolineas Argentinas
Fri, Nov 28 - Thu, Dec 18
AEP
Buenos Aires
PSS
Posadas
$144 Roundtrip, found 4 days ago
$144
Roundtrip
found 4 days ago
Select Aerolineas Argentinas flight, departing Fri, Nov 28 from Buenos Aires to Posadas, returning Thu, Dec 18, priced at $144 found 4 days ago
Aerolineas Argentinas
Fri, Oct 24 - Thu, Nov 6
AEP
Buenos Aires
PSS
Posadas
$150 Roundtrip, found 23 hours ago
$150
Roundtrip
found 23 hours ago
Select Aerolineas Argentinas flight, departing Fri, Oct 24 from Buenos Aires to Posadas, returning Thu, Nov 6, priced at $150 found 23 hours ago
Aerolineas Argentinas
Fri, Oct 31 - Wed, Nov 5
AEP
Buenos Aires
PSS
Posadas
$152 Roundtrip, found 1 day ago
$152
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Fri, Oct 31 from Buenos Aires to Posadas, returning Wed, Nov 5, priced at $152 found 1 day ago
Aerolineas Argentinas
Sun, Sep 21 - Wed, Oct 1
AEP
Buenos Aires
PSS
Posadas
$155 Roundtrip, found 15 hours ago
$155
Roundtrip
found 15 hours ago
Select Aerolineas Argentinas flight, departing Sun, Sep 21 from Buenos Aires to Posadas, returning Wed, Oct 1, priced at $155 found 15 hours ago
Aerolineas Argentinas
Wed, Nov 5 - Thu, Nov 13
AEP
Buenos Aires
PSS
Posadas
$163 Roundtrip, found 1 hour ago
$163
Roundtrip
found 1 hour ago
Select Aerolineas Argentinas flight, departing Wed, Nov 5 from Buenos Aires to Posadas, returning Thu, Nov 13, priced at $163 found 1 hour ago
Aerolineas Argentinas
Fri, Oct 10 - Tue, Oct 14
AEP
Buenos Aires
PSS
Posadas
$163 Roundtrip, found 6 days ago
$163
Roundtrip
found 6 days ago
Select Aerolineas Argentinas flight, departing Fri, Oct 10 from Buenos Aires to Posadas, returning Tue, Oct 14, priced at $163 found 6 days ago

Alternative airports near Posadas

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Libertador General Jose de San Martin PSS. Cheapest and Closest option available. Average driving time to city center is 12 minutes. Flights from $217
PSS
Libertador General Jose de San Martin
CheapestClosest
Average driving time to city center12 min
Flights from $217
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
$125
Distance
515 mi
Average flight time
1 hour 38 mins

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 May. 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?
Get a cheap one-way flight from $56 or cheap return flight from $125 from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS) 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 Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS)?
Flying in May can help you save, as it's the cheapest month for flights between AEP and PSS. You'll usually find the lowest fares during off-peak months.
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 Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS)?
Flybondi and Aerolineas Argentinas are some popular carriers offering competitive fares. Keep in mind that flight prices from Aeroparque Jorge Newbery Airport (AEP) to Libertador General Jose de San Martin Airport (PSS) can change depending on the time of year, demand and how early you book. With Expedia's filter tool, you can easily find an AEP to PSS flight that fits your preferences and budget.
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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