British Airways - 56 x 45 x 25cm YES OUR BOX FITS!

Virgin - 56 x 36 x 23cm YES OUR BOX FITS!

TUI - 55 x 40 x 20cm YES OUR BOX FITS!

First Choice - 55 x 40 x 20cm YES OUR BOX FITS!

Jet2 - 56 x 45 x 25cm YES OUR BOX FITS!

United Airlines - 56 x 35 x 22cm YES OUR BOX FITS?
 

Ryanair - 40 x 20 x 25cm NO! Unless you are a priority boarding passenger.

Easyjet - 45 x 36 x 25cm - NO! Unless you have booked an up front or extra leg room.