American Airlines and Jet Blue are two of the airlines that reported having system outages Friday morning.
According to American Airlines, Sabre Corporation, which is a company that operates global distribution systems such as air bookings in North America, had a system outage.
The outage was reportedly resolved before 5:45 a.m. EST.
Still, airports across the country report long lines and significant backups.
Philadelphia International Airport released this statement: "Early this morning, a reservation system serving multiple carriers experienced a technical issue. The issue has been resolved and systems are back online, but passengers should plan extra time for their travels this morning."
Early this morning, a reservation system serving multiple carriers experienced a technical issue. The issue has been resolved and systems are back online, but passengers should plan extra time for their travels this morning. pic.twitter.com/1kU4eI6cwh
— PHLAirport (@PHLAirport) May 21, 2021
It's unclear how long until the lines and check in delays will end.