Hundreds of passengers found themselves stuck on the tarmac for hours at Chicago's Midway International Airport, NBC 5 Chicago is reporting.
As many as 30 planes were stuck on the tarmac beginning late Thursday night from delays that began earlier in the day, NBC 5 reports.
Officials said arriving planes were stuck with no where to go because all of the airline's Midway gates were occupied by other aircraft. Passengers were kept on planes for up to four hours waiting for a gate to open.
Once inside, they found the airline's kiosks inoperable and additional delays at the baggage claims.
Officials said there were no other issues in other cities and that crews were working as quickly as possible to correct all of the issues. However, delays were likely to continue Friday.
Passengers were advised to check the airline's website at southwest.com for the most up-to-date flight information.