The Bf 109H was intended to be a high-altitude fighter, developed from the F-series. The wingspan was increased through the addition of new, constant-chord inner wing panels to 11.92 m (39.11 ft), and the widened stabilizer again received a supporting strut leading from the fuselage, like the B through E models. Maximum speed was 750 km/h (470 mph) at 10,100 m (33,140 ft). A small number of Bf 109 H-1s were built, flying several sorties over Britain and France. Bf 109 H-2 and H-5 developments were also planned, but the entire H-series was scrapped because of wing flutter problems.
- H-0 (Pre-production aircraft, rebuilt from F-4/Z, powered by a DB 601E engine with GM-1 boost)
- H-1 (Production version, based on G-5 airframes, powered by a DB 605A engine with GM-1 boost)