Occasionally, aircraft with a seating structure of 2+2 may letter the seats as ACDF to keep with the standard of A/F being window and C/D being aisle on short-haul aircraft (which generally have 3+3 seats).
People Also Ask
Is seat A or B by the window? With few exceptions, the A seat will always be by the left window. The F seat will be by the right window in a narrow-body jet with a single aisle. They'll skip numbers to keep the naming scheme correct in smaller jets, often keeping C and D for the aisles.
The convention seems to be that the window seats will be A and F, and the aisle seats C and D. So, where there are only two seats on each side, B and E are not used. Things are a little more complex on wide-body jets. So you have A and K as window seats, with C,D,G and H as aisle seats.
Seats D, E, F and G are located in the centre. Seat D is adjacent to the left hand aisle, seat G is adjacent to the right hand aisle. Seats H and K are on the right hand side of the aircraft, with seat K next to the window and seat H adjacent to the right hand aisle.
Some airlines may skip some letters because some of the letters are absent from their alphabet (e.g. an airline in Vietnam may have the layout ABC-DEG-HKL in economy class because letters f, j, w, and z are absent from the Vietnamese alphabet).