Berlin

From Wiki 24

Berlin
Seasons	1, 2
First mentioned	Day 1 1:00am-2:00am
Last mentioned	Day 2 11:00pm-12:00am

Berlin was the origin of Flight 221, which was supposed to land in Los Angeles after 1:00am during Day 1.

Berlin was also where Syed Ali claimed to be on April 5th prior to Day 2, not in a meeting with three Middle East leaders to discuss the purchase of a nuclear bomb to be detonated in the United States.