Genotypic and phenotypic coefficient of variance, broad and narrow-sense heritability, expected genetic advance and relative genetic advance of earliness characteristics in six pea hybrids produced by 4 x 4 half-diallel crossing scheme were estimated. The results, in general, showed low values of phenotypic coefficient of variance (in all crosses) of days to beginning of flowering and days to marketable maturity; which may indicates to a low effect of environmental variation on the expression of both these characters, but were medium to high for number of low internodes and internode's length. Estimates of heritability in broad sense were medium to high for days to beginning of flowering (0.42 – 0.90) and days to marketable maturity (0.42 – 0.91), and biased estimates of narrow-sense heritability have been recorded in most of the crosses and in majority of the parameters studied; so we can’t adopt them as reliable data. The highest estimates of relative expected genetic advance of number for low internodes have been observed in Mutant-3 x Dasargelo (25.95%) and Dasargelo x Nassra (25.11 %) and for internode's length in Dasargelo x Oterlo (37.31 %). The selection procedure can be effectively made for achievement further improvement of internode's length in early segregating generations of Dasargelo x Oterlo hybrid; because it has high values of genotypic coefficient of variance, broad-sense heritability and relative expected genetic advance.