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Confidence votes 217. There are a great variety of commercial aircraft, so flying speeds differ. Most commercial passenger jet airliners cruise at about 480 - 560 miles per hour. The cruise speed for each aircraft may vary, depending upon the power setting the crew elects to use.
Once at a steady cruising speed of about 16,150mph (26,000kph) in orbit, astronauts no more feel their speed than do passengers on a commercial airplane. View image of (Credit: Nasa). If G forces arenât a problem for Orionâs longer duration missions, small space rocks â âmicrometeoroidsâ â might be.