For students looking for jobs after graduation, first, you should begin applying for jobs not later than six months before you graduate. These are some sites you might want to check out. Many of the large companies have special programs for new graduates. For example, British Airways has a graduate program where you would be stationed at Heathrow Airport outside London and you would rotate through different business sections (Ticketing, reservations, ground ops, flight crew…).
Great Britain/Hong Kong:
Middle East: