As of today, February 26, 2026, Southwest Airlines' core reservation and boarding systems are operational, but the airline is dealing with significant "recovery" disruptions in the Northeast U.S. and Mexico. A major Northeast blizzard earlier this week left aircraft and crews out of position, leading to a lingering cancellation rate of approximately 42% at hubs like Buffalo Niagara International (BUF) as the carrier works to normalize its schedule. Additionally, civil unrest in Jalisco, Mexico, has prompted a travel advisory for flights to Puerto Vallarta (PVR) through today. While the internal IT systems are not "down" in a technical sense, the logistical chain is heavily stressed. If you are flying today, Southwest is offering rebooking and refund options for affected travelers, and it is highly recommended to check the "Flight Status" tool on their mobile app before heading to the airport.