Also, watch how you're booking it - it's not entirely clear (to me, at least - but then it's still very early here
) from your post above if you're trying to book this all at once (i.e. JFK
-SOF) and are just quoting the individual sector prices you're seeing, or if you've already got JFK
booked and are looking to make a separate booking LHR
-SOF. If you're trying to book all at once, beware the BA
Fare Explorer - it seems to apply the highest fare to European legs if you're coming in on a fare code from abroad which does not otherwise exist...for example, if you're buying a World Traveller Plus ticket (T or W class) then it'll price JFK
correctly but, being unable to find T/W for LHR
-SOF, will offer you the highest cost option for that leg. If this is the case, the best bet may be to try and book two separate tickets.
can now issue e-Tickets for BA
- sometimes aa.com seems to offer cheaper fares than ba.com (I've checked a few recently)...you may be able to save a few $$ doing it that way.