Seems that Lufthansa is increasing traffic to Mexico with the latest route additions.
Starting 26/03/2012:
LH520 MUC-MEX 22:25 – 04:25+1 (Daily except Wednesdays and Sundays)
LH521 MEX-MUC 10:25 – 05:05+1 (Daily except Thursdays and Mondays)
Booked Equipment: Airbus A340-600.
MUC-MEX is scheduled at a 13 hour block, making it Lufthansa’s second-longest route in terms of flight time. It’s also interesting to note these are both overnight flights both ways which could be fun for the body clock.