How long would it take from one side to other in your milkyway with an airplane?

The Milky Way galaxy is about 100,000 light-years in diameter. If we assume an average commercial airplane speed of around 900 kilometers per hour (560 miles per hour), it would take approximately 1.6 billion years to cross from one side of the galaxy to the other. This immense time frame highlights the vastness of our galaxy compared to human scales of distance and time.