The distance is just around 8000 miles. So if you were going 100 miles per hour the whole trip, no turbulence and perfect weather and no stops for fuel then it'd take you about 80 hours to arrive.
10 hours and 30 minutes
1hr 00min to 1hr 05min Kuwait (KWI) to Bahrain (BAH) by a nonstop flight operated by Wataniya Airways or Gulf Air.
13 hours
2 hours and 30 minutes
18 hours