JetBlue has one way "Halloween" fares at $31 one way. Sale is today only.
Very limited dates : Oct. 29 thru Oct. 31.
See:
https://www.jetblue.com/deals/sal…26_436956
However, if you look you can quite good RT fares.
Examples :
Washington DC to West Palm Beach
outbound Oct. 26 $79
inbound Oct. 31 $31
RT $110
Austin TX to Orlando FL
Outbound Oct. 29 $31
Inbound Nov. 5 or 6 $69
RT $100
Boston to Charlotte
Outbound Oct. 29 thru Oct. 31 $31
Inbound many dates early Nov. $84
RT $115
Happy hunting!