Adaptability and stability are important indicators in light of climate change in the world, especially in the Mediterranean region. Therefore, eight bread wheat promising lines and three check cultivars were evaluated for days to 50% heading, grain protein content and grain yield (ard./fed.*) under twelve divers environments which were the combinations of three planting densities (350, 400 and 450 seeds/m2)×two locations (Ghazaleh and El-khatara)×two seasons (2014/2015 and 2015/2016). Stability analysis of variance revealed highly significant G × E “linear” for days to 50% heading, grain protein content and grain yield (ard./fed.). Phenotypic stability parameters indicated that wheat genotypes Line 5 and Line 7 and Misr 1 were highly adapted to favorable environments for days to 50% heading; Line 2, Line 4 and Line 5 for grain protein content and Line 3, Line 8 and Giza 168 for grain yield. On the contrary, wheat cultivars Sakha 94 and Giza 168 were highly adapted to stress environments for days to 50% heading; Line 7, Giza 168 and Misr 1 for grain protein content and Line 2, Line 4, Line 6, Sakha 94 and Misr 1 for grain yield. Furthermore, wheat genotypes could be grown under wide range of environments were Line 1, Line 2, Line 3, Line 4, Line 6, Line 8 for days to 50% heading, Line 1, Line 3, Line 6, Line 8 and Sakha 94 for grain protein content and Line 1, Line 5 and Line 7 for grain yield. The most desired and stable genotypes were Line 1, Line 4 and Line 8 for earliness, Line 8 for grain protein content and Line 1 and Line 5 for grain yield. The most desirable and stable genotypes were Line 1, Line 2 and Line 4 and Line 8 for earliness; Line 8 for grain protein content and Line 1 and Line 5 for grain yield. The AMMI analysis of variance showed that 43.06, 6.52 and 23.33% of the total sum of squares were attributable to environmental, genotypic and GEI effects for grain yield/fed., respectively. According to GE biplot and ASV, Line 2, Line 3, Line 5 and Line 4 were more stable for days to 50% heading; Line 1, Line 4, Line 8 and Line 2 for grain protein content as well as Line 4, Line 1, Line 2, Line 5 and Misr 1 for grain yield. Tolerance index (TOL) showed that the most tolerant wheat genotypes to environmental stress were Sakha 94 followed by Line 6, Misr 1, Line 2 and Line 4. Both models of Eberhart and Russell (Crop Science 6:36–40, 1966) and AMMI (Gauch in Elsevier, Amsterdam, Netherlands, 1992) are consistent