TUI has announced it won't relaunch its holiday services until 10 July 2020, while all of its Marella Cruises have also been placed on hold until 30 July.
The holiday firm has so far been forced to cancel 900,000 holidays due to the coronavirus pandemic.
The UK's biggest travel company also owns a new TUI River Cruise service, which was due to launch earlier in the year. It has now been delayed until November 2020.
‘Closely monitoring the situation’
The firm first announced its decision to stop all package holidays and hotel bookings back in March. It added that its services would not be returning until "further notice".
However, in a statement made on Thursday 11 June, a spokesperson said, "TUI UK and Ireland today confirms that due to the on-going travel restrictions all beach holidays up to and including July 10 will be cancelled.
"We are constantly monitoring the situation and will start taking people on holiday again as soon as we are able to do so.
"At this point in time, nobody can accurately predict when that will be, so for the time being we will keep a close eye on our programme and continue to amend and adapt timings in line with the latest global travel advice."
What happens if I have a holiday booked?
If you have booked a TUI holiday that was set to take place before the 10 July, you will be offered a credit note which will cover the full cost of your booking.
Those who booked a package deal holiday will receive an extra 20 per cent on top of the amount of their holiday on this credit note.
The firm explained, "We understand that you may not be ready to book again just yet, so the refund credit gives you the flexibility to book your travel in future.
"Plus, if your original booking was for a package holiday, you’ll get a separate booking incentive up to 20 per cent. For example, if you paid £2,000 for your holiday booking you now have £2,400 to spend."
Additionally, if you would prefer a cash refund, that is also an option.
TUI has since created a page on its website for customers to claim a cash refund if they have had their holidays cancelled.
You can also find the latest coronavirus information from TUI here.