We do not arrange flights as you can choose from a number of airlines which offer flights to Sofia including British Airways, Easyjet, Wizz Air and Bulgaria airlines (Air bg).
Check the web for other airlines  - even Air italia offer flights though these require a change in Milan or Rome.  Flights also go to Plovdiv (the second largest Bulgarian city) so check these as well.

Flights are offered by most of the charter companies and there are lots of search sites to help you locate a flight.
We will arrange for you to be met at the airport from where you will be taken to the hotel where you can relax and unwind.
Here are some relevant links: