Actually quite a few airlines cater specifically to those looking for student 
discount airline tickets. Some of these travel agencies are better than others in offering good deals. The trick is to shop around and see who is offering what. What follows is a list of some of the better travel agencies:
STA Travel is by far the largest travel agency catering to students worldwide. They have a very user-friendly website that provides lots of information and allows you check out lots of different deals. STA Travel also offers a guarantee that if you find cheaper student discount airline tickets that they will match the price.
Travelosophy is a travel agency that caters to students and teachers who are traveling abroad. They specialize in traveling to places like Europe, Africa, The Middle East, and Asia. Travelosophy also offers products for individuals as well as groups who are traveling together.
Student University is another travel agency that caters to students and teachers. They have a great airfare finder and offer many specials on flights.
