CUN has 4 terminals with walking connections; T3-T4 is quickest at 10 min walk with no security recheck. T2 connections require 15-20 min walks plus mandatory security rescreening. Average security wait is 18 min. Recommended minimum connection time is 40 min same-terminal, 50+ min for multi-terminal transfers. Use moving walkways in T3 and T4 to save time.

["Mandatory security rescreening required when connecting through T2, adding 15-25 minutes to transfer times","Multi-terminal transfers require 15-20 minute walks; no trains or buses available between terminals","Limited rest facilities airside; no dedicated sleep pods, showers, or quiet zones in main terminals"]

VIP Lounge by MERA in Terminal 4 (Domestic, near gate G55) is your best option with showers, spa, and private rooms, though it has minimal reviews. The Lounge by Global Lounge in Terminal 4 (opposite gate 54) offers showers and is more established with 12 reviews, but no spa or private rooms. Both require pay-per-use access for non-status passengers.