You had better not to do that. There are a few reasons to proof it.
Firstly, your eyes would have lower oxygen supply, there is no pressure to your eyes when you are at the sea-level. But the oxygen would reduce when the plane is flying, so that it would make your eyes feel uncomfortable.
Secondly, your eyes would feel low humidity. Though you may consider taking rewetting drops to your eyes, almost all airports would not allow passengers to take liquids on a plane.
Thirdly, maybe you can't have a good sleep on the air because rarely people would wear contact lenses to have sleep, unless it has designed for it. If you have to wear glasses, you have better prepare a pair of rimed glasses when taking a plane.