Delta not only charges you for the privilege of selecting your own seats, but charges you for the “preferred” aisle or window seat.

Here’s a flight in January 2026 to Atlanta:

And here’s the seat key denoting the aisle and window seats as “preferred”

I mean, don’t charge extra for something then not deliver it. Seems cut and dry.

If the aisle/middle/window in coach all cost the same price then no one would have any standing to sue. The airlines charged customers extra. They did this to themselves.