United Airlines is reducing its flight schedule at 40 domestic airports due to instructions from the FAA and DOT, aiming to alleviate pressure on the aviation system.Despite the schedule reductions, United and its United Express partners will still operate approximately 4,000 flights daily.Customers affected by the schedule changes will be directly notified and offered rebooking options, with refunds available even for non-refundable and basic economy tickets.United Airlines (NASDAQ:UAL) is a major American ...