How long does it takes to establish a route

Hello, 

I`m new on airlinesim and I was wondering how long does it takes to establish a route in terms of descent loadfactor?

I`m aiming for an 2 class config with a good service undercutting the prices of my competitors thus operating at the moment with a very small profit margin. Altough all my competitors flights are fully booked for the comming 3 days I hardly can get to the 50% loadfactor. 

thanks for your replies, 

Your competitors might have what you are missing: connecting pax.

Generally, in a competitive market it takes at least 3-4 days for a route to establish.