Originally Posted by
FBKSan
There are similar fares available on CO out of Philadelphia (technically starting at ZFV to EWR on amtrak). I see spotty availability in November and December, with same day runs (or red-eyes) available. $171 a/i, $147+, looks like it books into L class. I don't know how CO accounts for the ZFV-EWR leg in terms of mileage, but the trip nets at least 4800 miles, for 3.6 cpm.
ZFV-EWR yields 500 miles. 3 day minimum on this fare (I think, EF does not recognise ZFV)