Not in the industry, but I think ground stops might actually not be a regular/automated procedural thing for inbound international flights in the way that they are for domestic flights.
As for asking already airborne flights to turn around, those coming in over the ocean might simply not have a non-US alternate airport available with their fuel remaining, so that's often not an option.
Not in the industry, but I think ground stops might actually not be a regular/automated procedural thing for inbound international flights in the way that they are for domestic flights.
As for asking already airborne flights to turn around, those coming in over the ocean might simply not have a non-US alternate airport available with their fuel remaining, so that's often not an option.