I know this thread is five years old, but I figured I'd touch base on the subject for those who may stumble across it in the future.
FACT is, I have the original May 12, 1993 broadcast on VHS (well actually I just transferred to DVD). There ARE a couple of very short scenes--or rather scene extensions would probably be more appropriate--but I assure you, there was never an "alternate" ending scene with Kevin and Winnie at an airport or a shot of them 8 years later at all (although I do know Danica made a couple guest appearances on Fred's shortlived series "Working"...maybe they did something like that on there?!).
The scenes that are usually cut for time constraints on present day syndicated reruns include the opening of the final act with Kevin sitting on the side of the road rummaging through his luggage and coming across "mom's cookies", just before the car pulls up with Winnie in the back seat. Then the shots inside the car itself where they are bickering back and forth is often abridged, usually cutting out lines like "Of all the Chevys in all the world, she had to walk into mine..." and the scene where the old lady asks them if they'd like some music. Even more recently, they have been abridging the barn scene, cutting out where Kevin jumps the fence after seeing the horse (he just "magically" appears standing next to Winnie after having his back to her a few seconds earlier lol), and also parts or all of that narration ("Once upon a time, there was a girl I knew who lived across the street...").
There is also ONE very short scene that has NEVER reaired since the 1993 telecast: after Kevin loses his car to the band members and just after he punches out Winnie's new boyfriend, they show Kevin walking out the main doors of the resort and out past the canopy. Then the band drives by in Kevin's former car, and you can hear them all shouting Kevin's own cocky words back at him "Well what do you know? the pot is mine eh?" The voiceover during this sequence: "I'd started out to find myself, and ended up losing everything, lock, stock, and barrel. Hell, tomorrow was the fourth of July, so call it macaroni." It was most likely cut because of the use of the word "hell". I HAVE seen this sequence and have it on video.
Also, there has always been some speculation as to whether Kevin and Winnie actually "did it" in the barn that night. Well here's a little proof as to what the producers really intended: Immediately after the dialog, the script calls for an exterior shot of night becoming day, making a little better insinuation that Kevin and Winnie DID, in fact, seal the deal. But for some reason, that short scene was never actually recorded. Also from the original script, the opening narration was to be slightly different.
The farewell episode actually aired as a one hour special, with no end credits or "to be continued" at the end of part one, nor opening credits or recap at the open of part two. Was all one big episode. The series WAS canceled contrary to what many think, and was not simply retired with this being the intended ending. All filming for the episode was completed before the cancellation order was made, but gave the producers just enough time to have Daniel Stern record the "fateful" narration that wrapped the series. The narrative truly made the ending what it was, and appropriately so. Without it, it would have been a mediocre episode with a rather dumb final story.