Top 10 eSIM providers for San José in 2026

Scoring here weighs three things roughly equally: how well the provider's partner network holds up across San José's sprawl, what you're actually paying per gigabyte once the fine print shakes out, and how painless activation is — ideally before you even clear customs at SJO. Coverage matters more than you might think. Kolbi, the state-owned carrier operated by ICE, still runs the strongest towers through the Central Valley, and providers that route through Kolbi tend to hold signal in places where Movistar or Claro drop. Walking from Barrio Amón's colonial-era mansions down through Chepe's grid of narrow one-way streets, the humid air thick with diesel fumes and frying plantain from the sodas, you'll notice the difference if your eSIM defaults to a weaker carrier. Per-GB pricing varies wildly — from under two dollars with Airalo to north of eight with some boutique providers. Hidden fees, particularly data-speed throttling after a soft cap, dragged a few otherwise decent options down the list.

The mistake most visitors make is buying too much data upfront. San José has surprisingly solid free wifi in unexpected places — the food stalls ringing Mercado Central where the clatter of plates and the smell of black bean soup fill the aisles, most cafés along Barrio Escalante's Calle 33 corridor, even the waiting areas at the Estación al Atlántico where the Tren Urbano line departs toward Heredia. If you're staying in the city and not heading deep into Guanacaste or the Osa, a 3-5 GB plan tends to be plenty for a week. Another common trip-up: assuming your eSIM will work smoothly at Tobías Bolaños, the smaller domestic airport tucked west of Parque La Sabana. Coverage there is fine with Kolbi-backed providers but gets patchy with Claro-only ones, and if you're catching a domestic flight to Tortuguero, you want signal until the last minute.

Airalo isn't the right pick for everyone, mind you. If you're planning to stream video constantly from your rental in Escazú or need a hotspot for a laptop while working out of San Pedro's coworking spots near the Universidad de Costa Rica campus — the kind of places where students crowd the sidewalk cafés and the wifi already strains — Holafly's unlimited-data plans make more practical sense. You pay a flat daily rate and stop thinking about it. Heavy data users who blow through 10 GB in a few days will find Airalo's top-up model gets expensive fast. Worth noting too: Airalo's customer support runs through in-app chat only, no phone line. If you're the type who wants to call someone when things go sideways, Ubigi or GigSky offer phone support that might ease your mind.