Not really a problem. It's just that there have been many flashforwards, but only one that seems to be in the future relative to the air date. And at the time it aired, we did not realized that - it only became apparent with the August 2007 newspaper, plus an assumption that the airport scene happens after that.

So I thought, well that makes it unique - everything else we have watched occurred in "our" past - unless we are wrong about the sequence of events. Then I checked Lostpedia and saw that the timeline there did not assign a date estimate for the K/J airport meeting.

A few days later, the Lostpedia timeline did change - it now assumes the airport meeting occurred sometime after August 2007.