WHAT DOES HOW TO CHANGE FLIGHT WITH ICELANDAIR MEAN?

I just lately flew Icelandair from Seattle to LHR. The 1st flight was a Boeing 757-200. I’m six’4 and booked an additional leg room seat. not simply was I cramped with my knees Nearly hitting the seat before me, but the seat by itself wasn't quite extensive instead of cozy. My 2nd leg from Reykjavik to London was with a 767-200 and wasn’t muc