LONDON, Oct 10 (Reuters) - Israel's airports authority said on Tuesday El Al and Israir Airlines have added more flights to bring reservists back to the country and limited flights to Ben Gurion Airport's Terminal 3 due to security concerns.

The flights come after Israel said on Monday it had called up an unprecedented 300,000 reservists and warned residents of the Gaza Strip to evacuate in a sign it could be planning a ground assault in response. (Reporting by Joanna Plucinska; Editing by Alison Williams)