Third film in the series departs from the first two films and offers something new. The plot works well enough to keep you interested from start to finish, and though it's nothing special, it's actually an improvement over the previous films. However like the first two in the series, this entry still has its limitations. Despite its good plot, and its effort to try something different, the film's script suffers from underdeveloped writing. However the cast here are good and it is one of the best casts in any Airport films. I really enjoyed the film, and this is the perfect little thriller to watch if you're looking for mindless entertainment. But like every other film in the series, don't expect a superb film, and you're sure to enjoy it. I thought this was an underrated entry in the series and because it departs from the first two films, it does something new and exciting. As a disaster flick, this third film works well, and along with the first film in the franchise, I'd have to say this is the best one. However, all of the entries have their strengths and weaknesses. As a third film usually is one of the worst films in the series, this is not the case with Airport '77 is a good film filled with suspense, thrills and has you hooked from start to finish. Disaster films of the 70's were meant as pure popcorn flicks, silly, yet very enjoyable. If you enjoyed the first two films, check this one out. Despite its flaws, this one is good due to good performances from the cast that are good in their roles, and make the film what it is.