It comes after fellow Bourne Leisure brand Haven announced on Tuesday (12 May) all its parks would remain closed until 2 July.
Both Butlin’s and Warner Leisure are now working to the same timetable.
Butlin’s said following the latest government guidance on coronavirus and domestic travel, it was working through "what the proposed plans mean" for the iconic resort operator.
"We’re hopeful that we can open again in the not too distant future," said Butlin’s in a statement. "But in the meantime, we’re extending the closure of our resorts until the 2 July."
