Check My Trip is a website that lets you enter any Amadeus reservation number to see details of flights in a nice easy to use format. They revised the website and made it a bit more difficult to use recently – you can’t make links to bookings to pass to family and friends any more – but it’s still handy to know about. Many airlines, booking agents and hotels use Amadeus to organise their bookings. If you have a 6 character booking reference then it’s probably an Amadeus PNR which you can use in Check My Trip.
Link: Check My Trip