The top U.S. travel destinations are Seattle, Orlando, Florida, and Boston.
Flights were diverted and others grounded throughout the Midwest after a temporary outage at a Minnesota air traffic control facility caused issues, the FAA said.
"At no point was the president in harm's way," the White House said.
Part of the plan would replace the "people movers" which shuttle passengers.
American Airlines said in a statement that a "technology issue briefly impacted connectivity" for some systems.
The FAA said seats on hundreds of Boeing 737 MAX jets may require inspections in case they were incorrectly installed and needed to be fixed.