The honest answer
Buenos Aires doesn't have one obvious place to leave a bag — it has three historic termini, a downtown packed with sights, and two airports that handle storage completely differently from each other. Retiro, Once and Constitución each have their own public lockers, but the operator's own listings describe all three the same way: limited capacity, not really built for large suitcases, and prone to filling up during busy periods. That's reason enough to have a backup even when a locker is a few metres away.
The cheapest option isn't fixed either. Independent networks like Stasher and LuggageHero advertise city rates from around $1.49 a day or hour, undercutting both the roughly $5-a-day parcel-check style hold some termini reportedly offer and Radical Storage's own $2.50–$5.00 per bag per day, which varies shop by shop. Whichever is nearest on a given day is often the better call than queueing for a locker that might already be full.
Retiro: buses and trains
Retiro is the busiest single node in the city's storage puzzle — one bus terminal and three rail stations sharing a complex that moves something like 40,000 passengers a day across 75 gates. It's been running since 1983 and has its own gift shops, a bar, fast-food counters, a pharmacy and a bank branch inside, which gives a sense of scale: this is a transit machine, not a place built around comfort.
The terminal's public lockers sit on a quieter lower floor, away from the main departures hall, near the area bus companies use for parcel shipments. A dedicated left-luggage operation called Guard Pack reportedly runs two counters on the ground level — under CCTV and security patrol, and said to take oversized items like surfboards as well as large backpacks — though this comes from a single travel report and hasn't been independently confirmed. Passengers on some long-distance carriers, including Chevalier, can also use a VIP waiting room as an alternative to lockers entirely.
Nearby, Radical Storage lists partner shops around Plaza Colón and along Perú/Av. de Mayo, priced near the top of the network's range — around $5 a day per bag. Hours vary shop to shop and, according to the operator's own listings, can be as tight as a five-hour afternoon window, so it's worth checking before walking over with a case in tow.
Constitución and Once
Constitución and Once are the city's other two great terminal stations — both now National Historic Monuments, both handling long-distance and commuter lines. Constitución runs 14 ground-floor tracks plus an underground level; Once serves the lines running west into Buenos Aires Province. Both, like Retiro, have public lockers described as limited and not well suited to large suitcases.
At Constitución, porters reportedly offer to carry and tag bags for a tip, handing over a numbered ticket that matches a tag on the case — a workaround rather than a formal service, worth the usual caution around informal arrangements. Some stations are also said to run a parcel-check-style hold for around $5 a day, though that figure traces to a single source and should be treated as indicative rather than fixed.
Around Estación Once, Radical Storage lists three partner points: one about four minutes' walk from the station, open 09:00–18:00 at $5 a bag per day; another four minutes away at Miserere Square, open 09:30–17:00; and a third, roughly 11 minutes out at Castro Barros, also $5 a day and open 09:30–17:00. None keeps evening hours, so a late train doesn't pair well with any of them.
Downtown and the Microcentro
For a day around the Obelisco, Teatro Colón or Avenida de Mayo rather than passing through a terminus, the calculation changes — there's no station locker to fall back on, but denser coverage of partner shops instead. Points near the Obelisco itself, along Corrientes and Florida, and by Teatro Colón on 9 de Julio put a drop-off within easy reach of most of the Microcentro's sights.
These run on the same staffed-shop model as everywhere else in the network: book online, get sent the exact address, hand the bag to a shop that's agreed to hold it. There's no locker to jam or empty out here — the trade is fitting around someone else's opening hours instead.
San Telmo and the south
San Telmo, with its antique shops and colonial-era streets, sits closer to Constitución than to Retiro, and has its own Radical Storage point rather than relying on a walk back to a terminal. It's a sensible option for a day in the barrio before a train south, or for anyone based near Puerto Madero who doesn't want to backtrack to a station at all.
Ezeiza (EZE)
Ezeiza is the exception to app-based coverage: neither Bounce nor Stasher lists a store actually inside the airport. Both point travellers instead toward options elsewhere in Buenos Aires — Bounce names roughly 96 spots citywide — useful for a day in the city before a flight, not for storage literally airside.
On-site, the picture has shifted. An earlier service known to one traveller as "Pampa Luggage" is reported to have closed. What's there now: My Pod Capsule, a 24-hour locker-and-capsule setup about a five-minute walk — roughly 200 metres — outside the terminal building, with multiple locker sizes and advance booking recommended, and reportedly a counter called Your Luggage in the international arrivals hall near check-in area I, reached by following exit signage. The two haven't been cross-checked against each other, so it's worth confirming what's actually open on arrival rather than assuming both are running.
Aeroparque (AEP)
Aeroparque has no storage at all — current sources agree on this, and the stated reason is airport security rather than a lack of demand. Older forum posts describe a now-discontinued airport-desk service from years back; any claim of storage at AEP today should be treated as outdated until confirmed at the terminal.
The airport sits only around 2km from downtown, inside Palermo along the river, which makes Palermo the practical fallback rather than a real inconvenience. A Bounce-run store there, priced from $3.25 a day and carrying a large volume of attached reviews, is the kind of option this points to — worth booking ahead of arrival rather than trying to solve it airside.
Costs and size limits
Across the Radical Storage network, per-location pricing runs roughly from $2.50 a bag per day in Belgrano R and around San Martín/Avellaneda, up to $3.90 near Plaza del Congreso and $5.00 near Retiro, Once, Medrano and Almagro. Independent networks undercut the low end of that: Stasher advertises from $1.49 a day, LuggageHero from $1.49 an hour or day plus a per-bag service fee.
Size is where station lockers lose out. Radical Storage's network is reportedly marketed with no size or weight restrictions at all, according to the operator, while the public lockers at Retiro, Once and Constitución are specifically described as not well suited to large suitcases. For an oversized bag, a partner shop — or Guard Pack's stated allowance for large backpacks — is the safer bet over a coin locker.
Guarantees differ too: Radical Storage states a security guarantee of up to $3,000 per booking, while Bounce advertises $10,000 in bag protection and other providers cite figures as high as $10,000 for missing items. Worth reading the fine print before assuming any two networks are equivalent.
Booking and what goes wrong
Radical Storage, Bounce and similar networks work as staffed shops, not automated lockers, and none of them shows the exact drop-off address until the booking is paid for. That's standard across the model, not a red flag on its own.
Review patterns are consistent enough to plan around. Reviewers praise friendly, efficient shop staff and an easy booking process on both Radical Storage and Bounce. The complaints cluster in two places: addresses that don't quite match the map, or a shop that turns out closed on arrival, forcing a rebooking; and hours shorter or more irregular than expected, with some partner shops closing for an afternoon stretch or shutting as early as 6pm. A third complaint, specific to Radical Storage, is that "free cancellation" can turn out to mean a time-limited voucher rather than a refund.
The practical response to all three: confirm the shop's hours before walking over, keep the confirmation with the address to hand, and don't rely on same-day cancellation refunds if plans are still uncertain.
When the lockers are full
Peak travel periods are exactly when Retiro, Once and Constitución's own lockers are most likely to be exhausted — that's the stated reason the storage apps route travellers to partner shops in the first place, not a worst-case scenario. If a locker's already full, the nearest partner shop is the fallback, not a longer search for another public locker at the same station.
