Getting an eSIM at Mexico City Airport (MEX): Traveler's Guide

Overview

Mexico City International Airport (MEX) handles around 50 million passengers a year across Terminal 1 and Terminal 2, and mobile data is easiest to sort out before you leave home. There is free airport wifi and there are Telcel counters in both terminals, but the quickest way to be online at the gate is an eSIM installed ahead of time. This guide covers every option, in order of speed.

Airport Wi-Fi

Available

Yes

Quality

Free wifi covers the main public areas, but speed and reliability drop when the terminals are busy, so it suits messaging and maps better than video calls or large downloads.

Cost

Free. You connect to the airport network and accept a terms page, with no payment needed.

Time limit

Sessions can be limited or can drop and need reconnecting, and the rules can change, so do not rely on it for anything time-critical like ride bookings or two-factor codes.

SIM cards at the airport

Sold at the airport

Yes

Where to buy

Telcel, Mexico's largest mobile network, has counters in both Terminal 1 and Terminal 2. They are in the public arrivals areas after customs, so you can only reach them once you have collected your bags and cleared immigration. Staff can set up a prepaid SIM on the spot, and you should expect to show your passport.

Typical prices

Prepaid tourist SIMs are generally sold as a SIM plus a data package, usually in the range of a few hundred pesos depending on the data allowance and validity. Airport prices can differ from those in city stores, so check the package details on the counter before you pay.

Wait times

Plan on 15 to 45 minutes or more, depending on the queue and on whether your phone is unlocked. Arrivals after long-haul flights tend to bunch up, and you also have to swap physical SIM cards and wait for activation.

Why an eSIM

With an eSIM you install the plan before your flight, so you are not queuing at a counter after a long journey. Most Fresim stores deliver the plan instantly by email, and you tap Install on iPhone (iOS 17.4+) or Install on Android (Android 10+) to add it in one step. You can also scan the QR code, which is handy for sharing the eSIM with a travel partner or installing it from another screen. You keep your home SIM active for calls and bank codes, and your data switches on the moment you land. Your phone must be eSIM-compatible and carrier-unlocked.

Step by step

• A few days before you fly, check your phone is unlocked and supports eSIM (iPhone XS or newer, and many recent Android phones).
• Choose a Mexico plan from a Fresim store (prices vary by destination and are set by each store), then open the delivery email.
• On the ground at home or at your departure gate on wifi, tap Install on iPhone or Install on Android and follow the prompts. Alternatively, scan the QR code from another screen.
• Before landing, keep the eSIM installed but set your home SIM as the default for calls, and turn on data roaming for the eSIM line only.
• After you land at MEX, turn off airplane mode, confirm the eSIM line shows a signal, and open your maps and ride apps before leaving the terminal.
• If something fails to connect, join the free airport wifi, reopen your install email and check the plan settings, or ask a Telcel counter as a backup.

Pro tips

• Install the eSIM at home or at your departure airport on wifi. You need a connection to add it, and it is much less stressful than doing it in an arrivals queue.
• Open your ride or taxi app while you are still on airport wifi. Pickup rules at MEX are specific to each terminal, so confirm the meeting point before you walk outside.
• Terminal 1 and Terminal 2 are separate buildings, so check which one your flight uses and screenshot your hotel address and booking details in case you lose signal.
• Switch data roaming on only for the eSIM line, and leave it off for your home SIM to avoid unexpected roaming charges.
• Keep your passport handy if you do end up at a Telcel counter, because staff will usually ask for ID to register a SIM.

If you missed it

If you missed setting up before landing, Telcel stores and shops in the city sell prepaid SIMs, and many convenience stores sell Telcel top-ups. Prices and service are generally similar to the airport counters, with shorter queues than at peak arrival times. You can also install an eSIM at your hotel or a cafe on wifi, then use it for the rest of your stay.