Affiliate Marketing Secrets

I am looking into being a travel affiliate I am wondering is 3% good? I have a website that has to do with Travel information so I thought adding some ads and banners to promote some Travel packages would be nice but I am not sure. I have been looking into it and it said 3% is that good? Because for example a flight can be between maybe anywhere in most causes from 500 and higher.

Hello,
I’m a travel tour operator in Morocco, i have a website and i want to create an affiliate program for my travel packages, people who can promote them and get me eventual customers, can you tell me from where to start ? how can i find and hire affiliates ? Thanks a lot