On American Airlines, Basic Economy seats are primarily assigned for free at the time of check-in, which begins 24 hours before your flight. If you do not choose to pay for a seat assignment earlier, the airline's system will automatically designate a seat for you from the remaining inventory. This often results in passengers being placed in middle seats or at the back of the aircraft. In 2026, the policy remains strict: if you are traveling with companions, there is no guarantee you will be seated together unless you pay the additional fee to select specific seats during the booking process or before check-in. Elite status members and certain credit cardholders may still receive complimentary seat benefits, but for the standard "no-frills" traveler, the seat is a "luck of the draw" situation determined by the algorithm during the final hours before departure.