Eastern
I was a grad student in the mid 80's in northern ca
and had a psuedo part time girlfriend in atlanta
so when i would fly back home to the east coast on the holidays
i would take the last flight from san fran to atlanta
have her pick me up at the airport
hang out with her for the night
then take the first atlanta to philly flight in the am
and no extra charges either!!
i also did the same on the san fran to kansas city flight
but only once
as she found out about my other friend in atlanta