A spokeswoman for BAA, which owns Heathrow, said Friday night's long queues, which saw passengers waiting for up to an hour, had cleared by midnight.
Discussing the situation today, she said:
"Everything is looking quite good in the immigration halls. Things are moving and we haven't got major queues.
"The Border Force is putting staff where they are needed at the moment."
More top news
After failing to get his hands on any tickets for Arsenal fans for the FA Cup final, one unlucky supporter appealed for Royal assistance.
The Royal London Hospital and Newham University Hospital have been declared inadequate by the Care Quality Commission.
Homes have been evacuated as the Army works to defuse an unexploded World War II bomb discovered near Wembley Stadium.