Southwest’s daily out-of-service aircraft count jumped from its normal range of 15-20 to more than 60 about three weeks ago.
Schedule interruptions due to unavailable aircraft are costing Southwest Airlines millions of dollars each week, and the issue’s uncertainty makes providing short-term financial guidance challenging.
The unavailable aircraft are forcing Southwest to cancel hundreds and delay thousands of flights each week. It is launching long-awaited Hawaii service on March 17 and will steadily expand it.
Collected and summarized from the source below by Minh Pham https://www.mro-network.com/airlines/grounded-aircraft-costing-southwest-airlines-millions-weekly