Salinity is a major problem affecting crop production worldwide because it reduces yield and limits the expansion of cultivation. This study investigated the effect of irrigation water of different salinity levels on the growth and flowering characteristics of lily ‘Woori Tower’ and ‘Siberia’ cultivars. In both ‘Woori Tower’ and ‘Siberia’, the sprouting rate decreased and the sprout was delayed with increased irrigation water salinity. Plant height, leaf length, and leaf width decreased by 44.7%, 18.8%, and 20% in ‘Woori Tower’, respectively, and 50.7%, 36.4%, and 40% in ‘Siberia’, respectively at 0.5% NaCl compared to the control. Day to leaf yellowing was about 8 days earlier in ‘Woori Tower’ and 51 days earlier in ‘Siberia’ at 0.5% NaCl. SPAD decreased by 21.7% in ‘Woori Tower’ and 53.5% in ‘Siberia’ at 0.5% NaCl. In ‘Woori Tower’, flower height decreased by 9.6% at 0.5% NaCl, and the flower width and pedicel length gradually decreased as the salt concentration increased. Days to the flowering of ‘Woori Tower’ increased up to 3.5 days, as the salt concentration increased. The bulb characteristics of ‘Woori Tower’ also decreased. As the salt concentration increased, the Na+ and Cl- contents of the leaves of ‘Woori Tower’ and ‘Siberia’ increased, while the contents of K+, Mg2+ and Ca2+, decreased.