Originally Posted by SLF
From the OW validator (0.8), the following are more than 600 miles from LHR. Whether these are good I-class deals, I will leave to another.
CPH 609
LIN 610
NCE 647
PRG 649
SCQ 700
BCN 714
OSL 749
MAD 775
VIE 793
VLC 829
FCO 898
ARN 909
WAW 914
BUD 926
LIS 973
The LGW-PRG-LGW usually has low I Class fares.