Please give yourself 1 hour & 30 minutes to go through TSA Security Checkpoint this morning. TSA is moving quickly to get everyone through safely. Please be patient.— Dallas Love Field (@DallasLoveField) December 22, 2017
The line was so long, photos show, that it took up nearly every inch of the lobby.
The evacuation happened after an overheated AC Unit set off the fire alarm, the airport tweeted. Smoke was reported inside the terminal, and after firefighters arrived the issue was resolved in less than 20 minutes.
Update on this morning's alarm. Normal ops have resumed. pic.twitter.com/BdRcS3XE1s— Dallas Love Field (@DallasLoveField) December 22, 2017
About 2.7 million people are expected to fly on Friday.