British Airways says long-haul flights will begin to operate from Heathrow Terminal 5 on 5 June.
The flights, which are currently operating from Terminal 4, were originally scheduled to move at the end of April.
However, following the disastrous move of short-haul flights to T5 in late March - which saw hundreds of flights cancelled and thousand of items of baggage delayed or lost - the airline opted to postpone the move.
By Elizabeth Clifford-Marsh
