That's a loaded question, there are a lot of things you need to know. It takes a lot of training to fly a plane like that, it is very complicated.
Yes, of course the Boeing 787 can fly. It is an aircraft (airplane)!
The Boeing 747 can fly in the troposphere and lower stratosphere layers of Earth's atmosphere.
There is not such plane as a Boeing 763 that has been made.
Both models of the Boeing 787 (787-8 and 787-9) can fly at Mach 0.89
Heaven is not a place that a plane can fly to.
The Boeing 737 series can fly speeds up to 890 kilometers per hour. Other Boeing models can fly speed up to 910 kilometers per hour.
A Boeing 707-120B can fly about 540 knots. That is, 1000 kilometers per hour. A Boeing 707-320B can fly about 525 knots. That is, 972 kilometers per hour.
Boeing flies only up to 67000000 feet, or check it on FS.
A 787 can fly up to Mach 0.89
The Boeing 777's service ceiling is 43,100 feet.
Boeing aircraft can fly in the troposphere and lower stratosphere layers of Earth's atmosphere.
the Boeing 767