pardon the mention, but ... Southwest
Originally Posted by
CarmenOM
Delta will cancel the return tickets if you do not fly the second segment of the outbound trip.
Your inclination is incorrect; you are right to be nervous.
Southwest is the only major airline to specifically allow hidden-city ticketing. It is actually called out in their CofC. Book one-ways instead of RTs and the issue of having your return itinerary cancelled becomes moot.