What a SIM card actually costs in Mexico

The cheapest way to get data in Mexico

There are two honest answers, and which one applies depends entirely on how much data you use.

If you want a small amount for a short trip, the entry point is $4. Airalo's Chido line sells 1 GB for 3 days at $4, a price we read off Airalo's own checkout on 13 August 2026, and Saily sells 1 GB for 7 days at $4.99, read off Saily's own site on 16 August 2026. Airalo is the cheaper of the two; Saily's dollar buys four extra days. Both undercut the roughly $8 a SIM costs at a Mexican airport kiosk.

If you use data properly, the number that matters is $0.90 a gigabyte. That is Airalo's Chido 50 GB for 30 days at $45, verified, and it is the cheapest per-gigabyte rate anywhere in our Mexico data. It is roughly a third of what the same provider's 5 GB plan works out at. Mexico is not a country where the market stops at 20 GB, and buying small repeatedly is the most expensive way to do this.

The rungs of the ladder

Prices below are from our Mexico dataset. Airalo rows were checked on the provider's site on 13 August 2026, Saily rows on 16 August 2026 and Nomad rows on 17 August 2026; eSIM Go and Holafly rows are indicative and have not been read from a live checkout, and eSIMCard's have been withdrawn.

The spread from top to bottom is more than fivefold. Sizing the plan correctly saves far more money than shopping between brands.

Until 16 August this table carried Saily's 1 GB at $3.99 and its 10 GB at $17.99, both invented rather than checked; the real prices are $4.99 and $23.99. That moves Saily from the cheapest entry in Mexico to the second cheapest, and from mid-table at 10 GB to the dearest verified plan at that size.

Airalo sells two Mexican lines, and one is dearer for no stated reason

Mexico is one of a handful of countries where Airalo runs named tiers: Chido and Chido Plus. Both carry the same allowances at every size, and Plus costs more at every rung — $5.50 against $4 for the entry gigabyte, $54 against $45 for the 50 GB. Airalo does not state what the extra buys, so we will not guess. Check which line you have in the basket before paying.

Unlimited, and when it stops being silly

Airalo's Chido unlimited is $23.50 for 7 days and $62 for 30, both verified. Holafly's unlimited is $23.90 for 7 days and $64.90 for 30, verified in our data.

Do the arithmetic against the metered floor. At $0.90 a gigabyte, $23.50 buys about 26 GB. So a week of unlimited only wins if you would genuinely burn more than 26 GB in that week — tethering a laptop, or streaming heavily. Most travellers do not.

The local SIM, and why it is easier here than almost anywhere

No ID is required to buy a prepaid SIM in Mexico. It is an instant purchase over the counter, which removes the passport-and-queue problem that makes local SIMs a nuisance in most countries. They are sold in Oxxo convenience stores — the most ubiquitous chain in the country — along with pharmacies, Walmart, supermarkets and airport kiosks.

The limit on our advice is that we hold one local price: about $8 at an airport kiosk. We do not hold a verified city-shop price or a confirmed data allowance, so we cannot give you a per-gigabyte figure to set against the table above. For a long stay with heavy use, walking into an Oxxo is very likely the cheaper route; we would rather say that plainly than dress up a number we have not checked.

Coverage, and which network you are actually on

Telcel holds around 67% of the Mexican market and has by far the best national geographic coverage. AT&T Mexico, at roughly 20%, is competitive in the major cities and tourist corridors. Movistar is smallest at about 13%. The national average speed in our data is 40 Mbps.

Known coverage gaps are worth reading if your trip leaves the resort strips: Holbox Island, Contoy Island, the remote Copper Canyon, the rural interiors of Oaxaca and Chiapas, and sections of the federal highway between Playa del Carmen and Mérida. Emergency calls work on any Mexican network without an active plan.

Now the part earlier versions of this page got wrong, twice. Almost none of these eSIMs publishes a host network. Nobody names anything. This page used to credit Holafly with Telcel and Movistar, which came from our own data; Holafly publishes no host carrier for any country — we read its prices for 28 of them off esim.holafly.com on 18 August 2026 and not one names an operator. Airalo, Saily, Nomad, eSIM Go and eSIMCard say nothing about which Mexican network their plans roam onto. This page used to credit Nomad with Telcel; Nomad publishes no host network in any of its 47 countries, so that has gone the same way as the Airalo claim before it.

Verdict

Short trip, light use: Airalo's Chido at $4 for 1 GB over 3 days is the cheapest way in, and Nomad's verified $11 for 5 GB over 30 days is the cheapest small month — both under Saily's equivalents. Saily is worth the premium only for the shapes Airalo does not sell — 1 GB with a full week on it at $4.99, or 3 GB with a full month at $9.99.

Two weeks or a road trip: buy the 50 GB Chido at $45 if you want it working on landing, or a local SIM at an Oxxo on day one if you want the best odds of good rural signal. Full pricing for every provider is on the Mexico hub.