Depends on where in space and the speed of the aircraft … The shortest trip to the Moon took place in January 2006 by the NASA Pluto probe New Horizons. With the speed of 58,000 km/hr, it only took 8 hours and 35 minutes to get to the Moon from Earth.
It takes about 8 minutes from launch for the shuttle to reach space. Wow? The space shuttle and the International Space Station orbit the Earth about 16 times a day. They are actually traveling faster than a bullet and together with the Earth’s gravity keep them in orbit around our planet
We already have some really good responses but I guess it all depends what you think of as “space” – outside the Earth’s atmosphere, outside its gravitational pull etc etc. The next generation of super jets for long haul flights will probably enter “space” in the sense of getting out of the majority of the Earth’s atmosphere where, without the drag and resulting heating effects of the atmosphere, they will be able to fly much faster reducing trips to Australia from the UK to a few hours.