1. Buy from the right website.
I found Last Minute to be very reasonable in price. I'm sure there are many others that might be just as good or better. If you know of any, be sure to comment this post so I can add them to the resources list.
2. Travel on a Wednesday or holiday.
For some odd reason, traveling on Christmas Day is cheaper than the day before or after. Why? I don't know, but it is. Same goes for Wednesdays. Try it sometime.
3. Stay longer.
The longer you stay, the cheaper the ticket is. Play around with the dates in any airfare database and you will see what I'm talking about.
4. Join a courier program.
There is an excellent courier program (click here) that gives you access to highly discounted airline tickets if you agree to simply deliver a package for one of their clients once you arrive at your destination. Click on this CNN Money article to read more about them.
Ryan Air is often much cheaper than taking a train or bus - not to mention more convenient.
There you have it... My 5 best tips for getting international airfares on the cheap! Enjoy!
"He who does not travel does not know the value of men." -Moorish Proverb