Check in and boarding rating:
3out of5
There are self check-in machines in the terminal: Yes
Online/Telephone Check in available: Yes
Waiting time at check-in: more than 1 hour
Access to the aircraft: Finger
"CheckIn: London to Mexico was fine. Checked in online.
Mexico to London. Attempted to self check at the airport which failed. There was further confusion as it was a Delta Airlines flight operated by Aeromexico. After queueing for an hour at Delta I was told I had to check in at Aeromexico. Not happy at losing an hour. Fortunately it didn't matter as I had the time and the Aeromexico queue was only a few minutes. However it could have been a disaster as the Aeromexico queues can be an hour long as can the security queues. It will also explain why the Delta Airlines self check in service didn't work.
I suggest your itineraries make check in procedures clearer."