6. If a airplane is traveling from West to East they have the jet stream helping them. If a airplane returns to the West Coast it is going against jet stream. If the jet stream is going 70 miles per hours (mph) from west toward east and it takes an airplane 5 hours to go from Los Angeles to New York City and 7 hours to go from New York City to Los Angeles; how fast was the airplane travelling? The distance in air miles between Los Angeles and New York City is 2,450 miles. D R X T