World number six Saina needed just 32 minutes for her 21-17 21-14 win over qualifier Li Xuerui of China at the Singapore Indoor Stadium.
Saina will meet fourth seeded Lan Lu of China tomorrow for a place in the summit clash. Lu had beaten unseeded Porntip Buranaprasertsuk 21-12 21-9 in another quarterfinal match.
In the men's singles also, Kashyap made it to the semifinals with a 21-17 21-16 win over compatriot Arvind Bhat in a quarterfinal match that lasted 40 minutes.
It was though curtains for India in the women's doubles and mixed doubles as they failed to get past the quarterfinals.
In the women's doubles quarterfinal, Jwala Gutta and Ashwini Ponnappa lost 11-21 19-21 to Singapore duo of Shinta Mulia Sari and Lei Yao.
In mixed doubles, Gutta and V Diju, seeded sixth, lost to secon0d seeds Thomas Laybourn and Kamilla Rytter Juhl of Denmark 19-21 16-21 in the quarterfinals.