Kayak is not the only one, in India I have seen MakeMyTrip did not show couple of direct flights which I found on Cleartrip . I would like to know if using VPN

Kayak is not the only one, in India I have seen MakeMyTrip did not show couple of direct flights which I found on Cleartrip . I would like to know if using VPN has a impact on large sites like Amazon(I have seen the price change there too)