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CA $178 Cheap Flights from Buenos Aires (AEP) to Posadas (PSS)

View CA $178 flight on Thu, Sep 3, 2026Opens 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 (AEP) to Posadas (PSS)

Prices were available within the past 7 days and start at CA $178 for one-way flights and CA $356 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aerolineas Argentinas
Sat, Nov 21 - Sat, Nov 28
AEP
Buenos Aires
PSS
Posadas
CA $356 Roundtrip, found 2 days ago
CA $356
Roundtrip
found 2 days ago
Select Aerolineas Argentinas flight, departing Sat, Nov 21 from Buenos Aires to Posadas, returning Sat, Nov 28, priced at CA $356 found 2 days ago
Aerolineas Argentinas
Thu, Sep 3 - Mon, Sep 7
AEP
Buenos Aires
PSS
Posadas
CA $382 Roundtrip, found 1 day ago
CA $382
Roundtrip
found 1 day ago
Select Aerolineas Argentinas flight, departing Thu, Sep 3 from Buenos Aires to Posadas, returning Mon, Sep 7, priced at CA $382 found 1 day ago
Aerolineas Argentinas
Sat, Nov 21 - Sat, Nov 28
AEP
Buenos Aires
PSS
Posadas
CA $406 Roundtrip, found 2 days ago
CA $406
Roundtrip
found 2 days ago
Select Aerolineas Argentinas flight, departing Sat, Nov 21 from Buenos Aires to Posadas, returning Sat, Nov 28, priced at CA $406 found 2 days ago

Frequently asked questions

How much does a flight from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) cost?
You can find one-way and return flights from AEP to PSS with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when AEP to PSS ticket fares go up or down.
What is the cheapest month to fly from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
The cheapest months to fly from AEP to PSS are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
Only one airline offers direct flights from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin). Aerolineas Argentinas operates 19 direct flights from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) every week.
What is the cheapest airline that flies from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
Aerolineas Argentinas is one of the cheapest airlines offering nonstop return flights from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin), with tickets starting from around CA$304 for flights that can be booked for departure within the next year. These prices are typically for one adult in economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
To find a cheap flight from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
The best airline to fly with from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) will differ from traveler to traveler. If you like to fly early, Aerolineas Argentinas offers early morning flights. If price is the most important factor, Aerolineas Argentinas typically offers the lowest fares. Aerolineas Argentinas offers the most daily flights from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
You'll find approximately 3 nonstop flights per day from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin). For even more choices, look at flights that include layovers, though there are no connecting flights available on this route.
What is the earliest flight from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
The earliest flight from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) typically departs around 6:45 AM, operated by Aerolineas Argentinas. This is a seasonal service, active only in March. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
You'll find the most flights from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) on Wednesdays, with around 3 flights available. This offers a good selection for your travel plans. Aerolineas Argentinas is a major airline on this route. Flight schedules are consistent throughout the week, so you'll have similar options on other days too.
What are the most popular departure times for flights from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
The most popular departure times for flights from Aeroparque Jorge Newbery (AEP) to Posadas (PSS) are in the early morning, from 6am to 9am. Many travelers prefer this time because it allows for an early start to their day at their destination. Aerolineas Argentinas offers flights during this window.
How long does it take to fly from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
A direct flight from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) typically takes around 1 hour 45 minutes. This route covers a distance of approximately 830 kilometres (516 miles). Keep in mind that actual flight times can vary slightly due to factors like wind patterns and air traffic.
Can you fly business or first class from Buenos Aires (AEP) to Posadas (PSS)?
Select the "Business class" and "First class" filters when looking for Buenos Aires (AEP) to Posadas (PSS) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) flight with Expedia?
It's easy to earn miles on a Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Posadas (PSS) from Buenos Aires (AEP)?
If you're planning to travel to Posadas from Aeroparque Jorge Newbery (AEP), you typically fly into Libertador General Jose de San Martin (PSS) which offers international flights and connections. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) at the last minute?
Typically, booking a last minute flight from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) flight and hotel package?
Securing a Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin)?
If you booked your Buenos Aires (AEP-Aeroparque Jorge Newbery) to Posadas (PSS-Libertador General Jose de San Martin) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Aeroparque Jorge Newbery
Destination airport
Libertador General Jose de San Martin
Roundtrip price
CA $356
Distance
825 km
Average flight time
1 hour 38 mins

Book with confidence

Buenos Aires to Posadas Flights

The easy way to book your flights from Buenos Aires to Posadas 

With Expedia, it’s simple to find and book flights to Posadas from Buenos Aires whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Libertador General Jose de San Martin, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Buenos Aires to Posadas today, tomorrow, or this week.  

 

Save dollars with cheap flights from Aeroparque Jorge Newbery, AEP to Libertador General Jose de San Martin, PSS 

Sort your search results by price to find great deals on your flight from Buenos Aires to Posadas—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Posadas from Buenos Aires currently is just CA $356 rising to CA $406.  

Here are more money-saving tips: 

  • Fly in November when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Posadas  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Posadas from Buenos Aires 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Posadas with Expedia today.

Buenos Aires to Posadas Flights
*Available to Expedia members.