A decision on airport expansion in south-eastern England is to be delayed until "at least October", Transport Secretary Patrick McLoughlin has said.
The move follows the UK's Brexit vote, which triggered a leadership contest in the Conservative government.
Heathrow and Gatwick airports have been vying with each other over building an extra runway.
Heathrow boss John Holland-Kaye said expansion "must be a key building block in the government's Brexit plan".
