Sofia can be reached through various transportation options, but the flight is a convenient mode for UK tourists or distant Europeans.
Sofia has an international airport, Sofia Airport (SOF), which serves numerous domestic and international flights.
Some of the non-stop flights to Sofia, Bulgaria, include:
Frankfurt, Germany FRA: 2 hr 10 min
Berlin, Germany TXL: 2 hr 20 min
London, UK LHR: 3 hr 10 min
London, UK STN: 3 hr
The clinics are located within 5 - 10 miles of the airport, so you can book a taxi or avail clinic's free transfers.