QUICK ANSWER
At origin check-in, confirm the airport code printed as the final bag destination and ask whether the bag must be reclaimed at MEX.
01
Do not assume a through ticket removes every formal step
International arrival procedures can still require immigration/customs actions. Follow airline and airport instructions for your itinerary.
02
Separate tickets need a bigger buffer
If you must reclaim, exit, recheck and clear security, model those steps explicitly with the self-transfer and connection tools.
Frequently asked questions
Will my bag transfer automatically at MEX?
It depends on the itinerary and processing rules. Check the bag tag and ask the airline.
What if my flights use different terminals?
Add terminal movement and any required re-screening/recheck to the connection budget.
✓
Sources and verification
Time-sensitive airport, airline, visa, security and transport details should always be confirmed with the relevant official source before travel.