Which seat is window seat in flight?

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).



In the standard commercial aviation layout for 2026, the window seats are almost always designated by the letters A and F (on narrow-body aircraft) or A and K/J (on wide-body aircraft). In a typical 3-3 economy configuration (common on Boeing 737s and Airbus A320s), Seat A is the window on the left side, while Seat F is the window on the right side. On larger planes with a 3-3-3 or 3-4-3 layout, Seat A and Seat J (or K) are the windows. To be absolutely certain, it is a "best practice" to check your airline's specific seat map or use a tool like SeatGuru before your flight, as some rows may lack a window entirely due to the placement of air conditioning ducts or structural components, even if the seat letter suggests otherwise.

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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).

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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.

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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).

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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.

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Most airlines have a different fare class for each letter of the alphabet, and this varies by airline: F is first class, C and J are typically business class, and Y is usually economy, regardless of the airline. The assignment of letters to each fare class isn't arbitrary.

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C - Business Class. D - Business Class Discounted. E - Shuttle Service (no reservation allowed) or Economy/Coach Discounted. F - First Class.

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According to the authors, it's the safest spot because it's the most isolated seat you can find (other than those ultra-luxe first class mini cabins). That's because there is only one passenger beside you, and gives a passenger much-needed inches from the aisle, where crew and other passengers can frequently pass by.

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Is 10 a window seat? It depends on the aircraft. In a standard single aisle aircraft configuration like a 737, 757 or Airbus A320, one side of the aisle is usually ABC, and the other DEF, in which case 10F will be a window seat. In a wide body aircraft, like a 747, 787, Airbus 380, etc. then 10F will be a middle seat.

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The typical reason for having missing letters or numbers in a sequence is to keep consistency across the fleet. In this case, you're on an aircraft with 2-4-2 seating. The airline probably also has aircraft with 3-4-3 seating. Knowing that a seat is B or J tells the staff that is a middle seat.

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After you finish booking your flight (or during the process, depending on the airline), you should click to view the seat map and make your pick. If you book your flight with friends or family members on the same reservation, they will likely be assigned seats nearby automatically.

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