The deal will allow Bmi passengers to book connecting flights with Air Dolomiti through its Munich hub to five Italian destinations: Bari, Bologna, Florence, Venice and Verona.
Air Dolomiti, which is owned by Lufthansa, already operates as general sales agent for Bmi Regional in Italy.
Jochen Schnadt, chief commercial officer of Bmi regional, said: “The extension of our relationship with Air Dolomiti to include codeshare cooperation is a logical next step for Bmi regional.
“The company shares our commitment to providing a quality, convenient product with excellent customer service, and our customers will now have access to a range of excellent routes into Italy from our all-important Munich hub.
“These new routes allow our customers from our existing markets linked to Munich to also enjoy convenient connections to some of Italy’s most exciting locations.”