I’ve reported before on the under-seat measurements of United’s 757-200 planes. A few days ago, I flew on a United 757 Overwater plane, and although SeatGuru does not break United’s 757 Overwaters out into a separate category of 757-200s, there were some differences in the under-seat spaces you should know about.

Once again, I was sitting in Economy Plus. There are three seats on each side. As with the 757-200, your best choice is a middle seat, followed by a window seat. I was given an aisle seat, but its under-seat space is only 13″ wide. The middle seat space is just 18.5″ wide, and the window seat is about an inch narrower. In a 757 Overwater, the life vest packets contain life vests, so the height of the under-seat space (once those packets are pressed upwards against the bottom of the seat) is 10 inches.

On this flight Chloe traveled in her large SturdiBag. I swapped places with the man who had been assigned the middle seat (he thanked me repeatedly), and her carrier fit comfortably in the available space.

This post is part of an ongoing series recording under-seat measurements of the various planes we fly on. Keep in mind that most domestic and international airlines have rules about the maximum size of in-cabin pet carriers they allow on board (see Dog Jaunt’s handy charts under the “Taking your pet on a plane” tab above).