Originally Posted by
socalgecko
Comp upgrades to F are quite rare and usually only happen at the gate, at the agent’s discretion, if a standby passenger is trying to get on the plane, MC is full, and there are still available F seats in the last moments before boarding begins. It’s only ever happened to me once.
Only happened to me once as well. It was a full JFK-SFO flight with a lot of standby passengers and my MCS upgrade hadn't assigned a seat yet so they upgraded me to F. Wish it would happen more often!