The easy move at Juan Santamaria is to arrive with a Costa Rica eSIM already installed. SJO used to have Kolbi and Claro booths by the carousels, but the Kolbi booth has closed and the on-arrival choice has narrowed to a single Claro stand and a couple of self-service vending machines. Land with a pre-installed eSIM and none of that matters: you walk out of immigration already online, skip whatever queue exists, and avoid airport pricing. The free terminal WiFi is fine for activating a plan if you forgot, but a profile loaded at home and switched on after landing is the smoother path into San Jose.
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SIM and eSIM Options at SJO
Juan Santamaria has a single integrated main terminal for international flights, plus a small domestic terminal, so you are not hunting across multiple buildings. The thing to know is that the connectivity options here have thinned out in recent years.
What Is Actually Open in 2026
The old Kolbi booth that once sat by the baggage carousels has closed. The most reliable staffed option now is a Claro stand near the carousels, generally open from early morning to around 9 PM and sometimes later on weekends. There are also two self-service SIM vending machines, one in the international arrivals lobby of the main terminal and one in the rental-car (ConRac) building across from the terminal.
The Claro Stand
Claro is the one carrier with a dependable physical presence at SJO. The stand sits near baggage claim and sells tourist SIMs with a passport, activating the line for you on the spot. Claro is fast in San Jose and along the main highways, so for a city-and-highway trip it is a perfectly good arrival-day choice; just know its rural reach trails Kolbi if you are heading deep into the parks.
SIM Vending Machines
The self-service machines run outside staffed hours, which makes them the fallback for a late-night landing. The trade-off is the usual one: a fixed menu of plans, setup you do yourself with no one to troubleshoot, and a price that is rarely the best around. They are a backup, not a bargain.
Why eSIM Is Not Sold From a Rack
There is no physical eSIM counter at SJO, because an eSIM is bought online. You can absolutely purchase and install one over the airport WiFi the moment you land, but that is exactly what you could have done at home in calmer circumstances, which is why pre-installing before departure is the cleanest play.
Free Airport WiFi at Juan Santamaria
SJO offers free WiFi across the terminal, which is what lets you activate an eSIM or buy a plan online the second you arrive.
Find the airport network
Open your WiFi settings and look for the airport network, shown as SJO Free WiFi (you may also see a generic free-airport-WiFi entry). No password is needed to start.
Accept the portal terms
A splash page loads. Agree to the terms to get online. Sessions are capped at around three hours, which is plenty to activate a plan or message your transfer.
Do your setup in the terminal
Use the connection to switch on a pre-installed eSIM, or to buy and install one if you skipped it at home. Bandwidth is shared and modest, so keep the task to activation rather than streaming.
Where the free WiFi runs out
The signal lives inside the terminal and nowhere else. Climb onto the bus or into a taxi and it is gone, right when you need maps to find your hotel or check the route into San Jose. The airport connection is also slower and less private than your own mobile data. Use SJO Free WiFi to get your eSIM live, then let cellular carry you the rest of the way.
SJO to San Jose: Transit and Data En Route
The airport sits beside Alajuela, about 20 km northwest of downtown San Jose, so the ride in is short but goes straight through traffic where live navigation earns its keep. Here are the main ways into the city.
| Option | Destination | Time | Fare (one way) |
|---|---|---|---|
| Public bus (Tuasa / Station Wagon) | Downtown San Jose | About 35 to 45 min | Around 2 USD (paid in colones) |
| Official orange airport taxi | Anywhere in the metro area | 20 to 45 min by traffic | Roughly 25 to 35 USD to downtown |
| Uber / app ride | Anywhere in the metro area | 20 to 45 min by traffic | Often cheaper than the orange taxi |
The public bus is the cheap option: the Tuasa buses run roughly 4:30 AM to 11 PM and the Station Wagon service runs around the clock, dropping you downtown for about two dollars. The official orange taxis are the regulated airport fleet, with a yellow medallion and a meter you should confirm is reset before you pull away. Uber works in the San Jose area and is usually the cheapest door-to-door option, but you need a live data connection to book it from the curb.
Why your own data matters on the way in
There is no train and no onboard WiFi to lean on here, so a working eSIM is what lets you book an Uber, confirm the orange-taxi meter against a route, or check which downtown stop the bus uses. The Liberty and Claro networks that travel eSIMs ride blanket this airport-to-city corridor, so you stay connected the whole 20 km in, which is precisely when you are sorting out where you are going.
Why Set Up Your eSIM Before You Land
With SJO's SIM options trimmed to one stand and a couple of machines, sorting your connection before you leave home is the low-stress route.
Pre-installed eSIM
Sorting it at SJO
The simple routine
Buy a Costa Rica eSIM online a day or two ahead, load the profile while you still have home WiFi, and keep the line dormant until touchdown. When you land at SJO, flip the eSIM line on in settings and you are connected at once, with no SJO Free WiFi login required. Not sure which device or plan suits you? Check our Costa Rica eSIM guide first.
SJO Airport Prices vs an eSIM
Convenience at the airport comes with a markup. Buying on arrival at SJO costs more than sorting it online, and the gap is consistent across plan sizes. Typical 2026 figures look like this:
| Where | Typical plan | Price |
|---|---|---|
| SJO Claro stand | Tourist SIM, a few GB | Around 12,000 to 18,000 colones (~24 to 35 USD) |
| SJO vending machine | Prepaid data SIM | Often above the downtown shop rate |
| Downtown carrier shop | Kolbi 5 GB + social apps, 30 days | About 12,000 colones (~24 USD) |
| Online eSIM | Short stay, capped data | From about 8 USD |
| Online eSIM | ~10 GB for a longer trip | Around 25 to 30 USD |
The pattern is clear: for the same data an online eSIM generally beats the SJO stand or machine, and it removes the queue and the passport step. A short-stay eSIM can start near 8 USD and a generous 10 GB plan lands around 25 to 30 USD, while the airport Claro SIM tends to sit higher for similar data. A local SIM does hand you a Costa Rican number and, if you buy Kolbi downtown, the best rural reach, but for a data-only traveler the eSIM wins on both price and speed of setup.
The bottom line
Install a Costa Rica eSIM before you fly and use SJO Free WiFi only to confirm it is live. Keep the Claro stand in mind as a backup if your phone turns out not to support eSIM, or if you want a local number for calls. Heading deep into the parks? Add a downtown Kolbi SIM for the off-grid days. Use the eSIM Finder to match a plan to your trip.
Frequently Asked Questions
Can I still buy a SIM card at Juan Santamaria airport?
Yes, but the options have shrunk. The old Kolbi booth by the carousels has closed, leaving a Claro stand near baggage claim as the main staffed seller, usually open early morning to about 9 PM and sometimes later at weekends. There are also two self-service SIM vending machines, one in the arrivals lobby and one in the rental-car building. For a late landing, the machines or a pre-installed eSIM are your only sure options.
How do I connect to the free WiFi at SJO?
Open your WiFi settings and join the airport network, shown as SJO Free WiFi. Accept the terms on the splash page and you are online for a session of about three hours. It covers the terminal and is the easiest way to activate an eSIM the moment you land, though bandwidth is modest, so keep it to setup rather than streaming.
Will I have a signal on the bus or taxi from SJO into San Jose?
Yes. There is no airport train and no onboard WiFi, but the Liberty and Claro networks that travel eSIMs use blanket the 20 km corridor from the airport into downtown San Jose. With your own data live you can book an Uber from the curb, check the orange-taxi route, or find the bus stop the whole way in, which is exactly when you need it most.
Is the SJO airport SIM more expensive than an online eSIM?
Usually yes. The Claro stand tends to charge roughly 12,000 to 18,000 colones for a few gigabytes, and the vending machines often run above downtown shop prices. Online eSIMs start near 8 USD for a short stay and around 25 to 30 USD for about 10 GB, so for the same data an eSIM typically costs less and skips the queue and passport step.
Should I switch on my eSIM before or after I land at SJO?
Install the profile before you fly while you have home WiFi, then leave the line off until you arrive. After landing at Juan Santamaria, turn the eSIM on in settings and you have data straight away, with no stand to find and no need to log in to airport WiFi first. Installing after landing also works, but only once you have connected to SJO Free WiFi.