Hi Paula,
Sorry about there being issues with the dates and prices not showing for you. The team are looking into this but at the moment, we are unable to replicate the issue.
In the meantime here is the information for the two tours your are looking at:
Unfortunatly for Secret Slovenia, there are no flights set up from Manchester, and June is sold out. You could speak to one of our holiday advisors who would be able to find out whether or not we would be able to source flights for you, alternatively this tour is also available as a 'Make Your Own Way' where you can book your flights independently and join the group overseas.
A more positive story for Croatian Island Explorer - you are able to fly from Manchester on all of the following dates
2nd May from £2,148
9th May from £2,388
23rd May from £2,568
6th June from £2,748
20th June from £2,668
As with Secret Slovenia, if you would prefer to book your flights indepently and meet the group overseas, a 'Make Your Own Way' option is also available.
Kindest regards,
Julia