Chelsea’s preparations for Sunday’s Premier League game at West Ham have been disrupted after they were forced to delay their return from Greece.
The Blues had planned to fly out straight after Thursday’s 1-0 win at PAOK.
But adverse weather conditions in the UK saw Chelsea postpone their return flight until Friday.
Chelsea, who are now expected to land late on Friday afternoon, have five wins from five Premier League games ahead of the derby at the London Stadium.
Eden Hazard and David Luiz were rested for the trip and so were unaffected by the flight delay.
Boss Maurizio Sarri made five changes for the Europa League Group L win, rotating his options ahead of a busy period.
Chelsea play at Liverpool in the Carabao Cup on Wednesday and host the Reds in the Premier League in September 29.