Hipmunk Further Reduces Agony For Users With Flexible Travel Dates
techcrunch.com
techcrunch.com
For example, I live in Nice and wanted to go to Malta. The ticket was 200 Euros. But I found I could take a train for two hours and go from Marseille via RyanAir for 20 euros.
The same is true for Last Minute deals. Czechs will spend twice as much for, say, a week in Egypt as a German in a city two hours away by train (Prague - Dresden).
Someone, please build this!
EDIT: And don't forget to add coaches. Whereas they're not that popular, they're dirt cheap.