Originally Posted by
G-BOAC
Simple: price and conditions.
I is the cheapest and most restricted bucket - JCDRI is listed in order of flexibility (and price). Register for
www.expertflyer.com if you want to look up published fare rules and prices on any route.
A couple points about R:
- you cannot assign seats if you're without status.
- also I have a load of flights with R lined up and there maybe a very small charge to change/refund but I can't be sure on this one