<p>Just a note: STA travel allows changes in flight plans for a modest fee… (I think $25). That makes them a great choice for students travelling abroad who may decide to change their return flights. 
Did I mention how glad I am that my older is only 3 driving hours away, and that younger may be also??? ;)</p>
<p>I just booked a flight to Amsterdam round trip for my son for this summer. After exhaustive searching, I found the best fare by far (300 cheaper than anywhere else including the airlines’ sights) on Orbitz. Keep checking it - fares appear and disappear quickly.</p>