Originally Posted by OMG
Ticket 1: MSP-EWR
Ticket 2: EWR-SIN
The part in question is the EWR-SIN routing, which is EWR-MSP-NRT-SIN and back. Is this sceniario considered back to back ticketing since the EWR-SIN trip routes me through MSP?
It's considered end to end, which is legal. Plug it in multi-city, and NW will give you the choice. Or at least I've been given the choice to double back thru my city of origin.