Planes use the air on Earth to generate a difference in pressure below and above the wings, which produces lift. But there's no atmosphere on Mercury, which means you couldn't even glide on it. If you drove the plane off of a cliff, you'd fall and crash like this:
Venus's atmosphere is 60 times more dense than Earth's at the surface, which would be plenty to generate lift. But you'd be flying through air that's over 400 degrees Fahrenheit — hot enough to melt lead and, incidentally, set your plane on fire:
Earth is a perfect place to fly an airplane, and it comes with an amazing view. Try it some time:
The atmosphere on Mars is 100 times thinner than Earth's. So the aircraft has to move very fast‚ at about Mach 1, to produce the right difference in pressure above and below the wings to lift off. Once in the air though, you'd be going too fast to have any steering control!
On Jupiter, the plane weighs 2.3 times more, so you'd need triple the power to fly. Rather than plummeting, the plane would achieve some lift in the atmosphere, so you'd glide at 600 mph toward the center. If you didn't freeze, you'd be crushed by overwhelming pressure.
You can maintain flight on Saturn for about the same amount of power as on Earth. However, you'd eventually freeze in the -270 degree F atmosphere and plummet toward the center, just like on Jupiter:
Uranus is a very dark, cold place. You and your aircraft would actually weigh less on Uranus than on Earth, so you could fly for as long as it took the plane's fuel to freeze solid in the frigid -350 degrees Fahrenheit environment:
Neptune has the fastest winds of any planet in the solar system, with wind speeds up to 1,500 mph. If you got caught in one of Neptune's violent storms, your plane — which would freeze in the -360 degree Fahrenheit atmosphere — would be shaken to pieces by turbulence:
