We do not have enough data on this route to provide a reliable graph showing how many days before departure it is the best to book.
However, usually the closer it is to the departure, the more expensive the tickets are.
The most popular airlines on the route Birmingham - Burgas: Thomas Cook Airlines (MT).
The cheapest flights are on the route Birmingham Airport (BHX) - Burgas Intl Airport (BOJ).
Direct flights last about 3h 20min.
Direct flights available 2 days a week - Monday, Friday.
Direct flights: Thomas Cook Airlines (MT), BH Air (8H).