Several reported having to be diverted, and I think in one case a flight that left JFK had to return to JFK while over the midwest: https://www.flightaware.com/live/flight/ASA31
How does that work? What is it about a computer outage in your parent company that affects whether you're able to make an already-scheduled landing?
- Whether parent company has the capacity to service your plane at the landing location
- Whether parent company has the capacity to handle boarding new passengers for the next flight at landing location
- Whether parent company can get next flight off the ground from landing location
- "Risk" management by sending planes and passengers where parent company thinks it has better ability to recover to normal operations
- And probably a bunch more only people who work in that industry would think of