Two field experiments were conducted, during the two consecutive seasons of 2002/03 and 2003/04, in the experimental Farm, Fac. of Agric. Fayoum Univ, El-Fayoum Governorate, to study the effect of three planting dates (30^th Oct., 15^th Nov., and 30^th Nov.) and three seeding rates (40, 60 and 80 kg / fed) on the yield and quality of two flax varieties (Sakha 1 and Sakha 2). Split - split plot  design with four replication was used.           The results indicated that highest yield and yield components were produced from sowing flax on 15^th Nov., while the lowest values of these traits were produced from sown on 30^th Nov. Increasing seeding rates from 40 to 80 kg seed / fed increased significantly plant height, technical stem length and seed oil percentage. In contrast, main stem diameter, straw yield / plant, number of capsules per plant, seed index and seed yield / plant were decreased by increasing seeding rate.  Sakha 1 variety recorded the tallest plant height, straw yield per plant and per fed, while Sakha 2 variety gave the highest number of capsules / plant, seed yield / plant as well as fed, seed index and oil percentage. In general, it could be summarized that highest fiber and seed yields per unit area was recorded by Sakha 1 and Sakha 2 varieties, respectively, with increasing seeding rates from 40 to 80 kg seed / fed.