The actress, who plays Rosie Webster on the ITV1 show, is to take time out from her Weatherfield role in the summer because she wants to spend more time with her footballer boyfriend Scott Sinclair, the News of the World reports.
Flanagan is said to have asked her Corrie bosses for time off to coincide with the end of the football season, when Swansea City player Sinclair will be free.
A source told the newspaper: "At the moment she and Scott spend hours on the phone. They meet when they can but this will test if they can be a full-time couple.
"Helen can't wait. She wants to be with him all the time. The only problem will be when they go back to their normal lives, hundreds of miles apart."
Speaking of the impact on Corrie, the insider added: "The writers have done some clever, funny writing to explain her absence."
Flanagan started dating Sinclair in late 2009.