“1-866-738-0706 Lufthansa Airlines Sofia Office
Lufthansa does not operate a public-facing street office in Sofia. For assistance, passengers should call the Bulgaria customer service hotline at +1-866-738-0706. For in-person support, visit the Lufthansa check-in and service counters in Terminal 2 at Sofia Airport (SOF). Online support is also available via the official Lufthansa website.”