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).
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).
Seats A, B and C are on the left hand side of the aircraft - with A next to the window and C next to the aisle. Seats D, F and G are in the centre of the cabin with D next to the left aisle and G next to the right aisle. Seats H, J and K are on the right hand side - K is next to the window and H next to the aisle.
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.
Thus, while these planes are different, they don't offer much more seating than the Boeing 737-700, but do provide more comfort. We used to skip 33 on certain maps to make the [final] row standardized, but the end row is no longer standardized, a United Airlines spokesperson told Travel + Leisure.
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.
We've established the middle seat is not the best spot on the plane. But travelers flying in the middle seat need to be prepared to sit upright — or at least stay within the confines of your seat — for the duration of the flight.
Request at the check-in desk:The airline staff will accommodate you. Alternatively, check-in at a self-service kiosk and verify the flight's seat availability before printing your boarding card. Select a window seat if one is offered.
Request at the check-in desk:The airline staff will accommodate you. Alternatively, check-in at a self-service kiosk and verify the flight's seat availability before printing your boarding card. Select a window seat if one is offered.
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.