Too many variables to answer. Depends on where you are traveling from and to, and days of the week/ time of day.
Many websites that provide a list of air travel tickets often order the tickets by lowest airfare. Some examples of websites that do this include Fare Compare and Spirit.
There are several places that offer discounted air fare for student travel tickets. STA travel is a student travel agency that works specifically with finding discounted travel for students, you can get tickets through them from statravel.com. Also you can find discounted student airfare from studenttravel.com and studentuniverse.com.
By air route cheapest tickets cost between 600 to 800 Euro (both way). One way tickets are costly. May be 500 Euro will do the one way travel job by air.
The cost of air tickets depends various factors like departure/return dates and timing of the travel. If you are flying on weekends then it would cost more then weekdays. Therefore I can suggest you to search on online travel portals like Globester.com to find out the best deal on cheap air tickets.
International air travel can be expensive. If one wants to find cheap tickets to travel to London, England they can go on discount sites such as Kayak, Expedia, or Priceline.
To India is a travel portal which provides low coast/cheap air tickets. Visit http://www.toindia.com for more details.
The best place to book tickets for Bulgaria Air is at the airport. There are usually connecting flights which will allow one to travel on this preferred flight.
Travel sites with cheap tickets are Kyak, Orbitz, Hotwire, Travel zoo,Expedia and Goflyfirst.com . However, users interested in cheap tickets should try these sites out to find the best vacation to suit there needs. Keep in mind prices will vary depending on origin and destination.
There is no fee that you have to pay while booking air tickets through travel agents. The travel agents get there commission from airlines.
Rewarding tallies which one receives for air travel are what air miles points are. The points lead to discounts applicable to tickets and vacations.
The websites Student Universe, STA travel and Student Flights specialise in air travel for students, also a lot of individual airlines sell special tickets that can only be brought by students.
The point of buying cheap air tickets in India is to allow one to travel around Indian when on a budget. It might of use to low income individuals or students.