I have used a great number of icons on a website am working on. I set up the files very well and I can't seem to find a problem. I'm still a newbie.
Make sure you have added those files and accessing them properly...
Your code for @font-face will be like this (path should be with or without 2 dots - depending upon its location), I think font files names, you are hosting are in small case letters
@font-face {
font-family: "Flaticon";
src: url("../flaticon.eot");
src: url("../flaticon.eot?#iefix") format("embedded-opentype"),
url("../flaticon.woff") format("woff"),
url("../flaticon.ttf") format("truetype"),
url("../flaticon.svg#Flaticon") format("svg");
font-weight: normal;
font-style: normal;
}