I flew in a F-22 and got to a top altitude of 30,000,000 feet!
Steps to get into space:
1: use a fast or fastest plane in if, then go to 1,000-2,000 knots
2: get inverted
3: Crash into flat ground at a very little angle
4:you will be going through the ground for a while
5: wait until you get to around - 400,000 feet
6: you should pop up out of the ground at speeds well within the 10,000 knots and fly into space
Hope you enjoy and are able to do it too!
- IFS :)