Travel firm TUI has made a number of changes to its holiday programme.
Beach holidays up to and including May 14 and Marella Cruise holidays up to and including May 31 will no longer operate.
A spokeswoman said: "We are constantly monitoring the situation and will start taking people on holiday again as soon as we are able to do so."
Posting an update on Twitter, TUI informed its customers not to contact them, but to head to their website for the latest information.
They said: "These are uncertain times for all of us and we don't underestimate the impact on those of you with holidays booked.
"For that reason, we've made the difficult decision to cancel all holidays up to and including 14th May.
Our travel promise still stands, as it's important for us to give you the holidays you deserve.
This means you can amend all holidays up to June 30th for free, even if you are due to travel between April 17th and May 14th."
Yesterday, (April 7) Jet2 said they will restart their flights and holidays in June.
The airline and package holiday company revealed that they would be restarting flights on June 17.
But anyone with holidays or flights booked before then has had their booking cancelled.
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