Can I trust "delayed" time from the app?
I'm flying BA851 (WAW -> LHR) today
scheduled departure: 18:15
now BA app (and google and fr24) is showing it delayed, departing 21:00
incoming flight (BA850) is only 15 minutes late - so that is not the base for this delay
I'm flying with my carry on only - and now I don't know when should I go to the airport. Any suggestions?