Hi! I don't remember seeing any lockers at the airport. I believe most airports have gotten rid of them, due to terrorism issues - I'm sure there'll be someone in the know on this board. With the amount of people to transport, I'd assume you'll go directly to the airport after you disembark, check with Carnival or your TA. If you can't get a locker, you might want to consider checking with the rental car kiosks at the airport to see if you could get a good deal on a 1/2 day rental. That way you could see a little more of what Anchorage has to offer and lock your suitcases in the car. I'm sorry you aren't taking the car from Seward, since the drive is spectacular. Maybe next time?