Avengers: Infinity War - 11 Things That Definitely Won't Happen
2. Time Travel
With the Infinity Stones very much in play and at the disposal of Thanos, then the Avengers could use their own power boost. Luckily they have not only the Mind Stone, but also the Time Stone at their disposal, with the gem contained in Doctor Strange's Eye of Agamotto.
Because of that, then there have been rumours of time travel being involved in this movie. It sure would be a handy way of dealing with the threats they're facing, but despite the talk we probably shouldn't be expecting timey-wimey shenanigans in this movie.
The plot looks to be relatively straightfoward and linear, progressing through Thanos' hunt for the Stones and the efforts to stop him, and it's also jam-packed. There isn't much scope for fitting time travel in there, and it's much more likely we're going to see it in Avengers 4 if at all (that's where the rumours are even stronger, although it could be dimension hopping instead).