missed 2 flights ever - both on AA
1 in ORD - made it to the gate after they shut the door. (2 pax)
1 in DCA the supershuttle was late and we (6) missed an AA flight to NY-LHR.
AA put us on a BA flight that evening, so we arrived 12 hrs late after going back home. We had to spend 3 hours sitting on the floor at DCA while they made a few calls to BA for us. 4 of us were on paid tickets and 2 on AA awards!
This is on 20 years of flying all over here in the US and abroad.