Easyjet has now cancelled all flights between the Egyptian resort of Sharm el-Sheikh and the UK until 6 January.The airline, along with other carriers, had cancelled all outbound flights to Sharm el-Sheikh up to this week.
Easyjet said the latest move was to provide some certainty to passengers travelling over the Christmas period.
Flights were halted after the UK government said the Sinai plane crash, which killed 224 people on 31 October, may have been caused by a bomb.
Easyjet said customers on affected flights could go to another destination, receive a full refund or get a flight voucher for future travel.
People wanting to travel back to the UK have been asked to contact the airline's customer service team.
"We are sorry for the inconvenience this will obviously cause, but we hope that being clear with all our customers at this point helps you to manage your plans with more certainty.
"The situation is beyond our control and passenger safety will always be our number one priority."
Last week British Airways announced that outbound flights from the UK to Sharm el-Sheikh would be cancelled until 17 December.
The airline said it would keep the situation under review and give customers as much notice as possible.