It pays to read the fine print. Delta quietly introduced a new Basic Economy Fare for airline tickets.
- A ticket that you cannot exchange or refund, period. You buy it; you own it.
- Your seat assignment is done only at the airport before the flight you're ready to board, meaning that your odds are very good (1) you'll be stuck in a middle seat and (2) you won't be seated next to your traveling companion.
Delta's New Sub-Economy Ploy - SmarterTravel.com