A power outage at Reagan National Airport caused long lines Thursday.
The power was restored after being out for more than two hours, but the outage was expected to continue to affect travelers through the evening.
The power went out at about 11:45 a.m. due to a fire at an electrical substation, affecting concessions and ticketing at terminals B and C. Those terminals were on backup power. Security screening also was affected, WTOP reported.
Flights were able to leave, but many passengers got stuck in lines and couldn't get to their gates on time to make their flights, News4's John Schriffen reported.
Restaurants tried to get rid of their refrigerated food, Schriffen reported, but they couldn't properly ring up customers without electricity.
The building housing airports authority offices also lost power and remains in the dark.
Travelers should call their airlines to check flight status. Delays and cancellations were anticipated.
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Officials made announcements in the terminals to notify people.
The cause of the fire is under investigation.
Stay with NBCWashington.com and News4 for updates as they become available.
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