Originally Posted by
beltway
A quick search turned up numerous $46 one-ways (EWR-BOS, EWR-SYR, EWR-BHM, ORD-MKE, ORD-STL), but nothing below that.
LAX-LAS are $46 on many days as well. But I believe these $46 one way fares are Basic Economy, which cannot be changed and therefore cannot be converted to FFC voluntarily.
The cheapest regular economy I know of is VCT-IAH, at $66.