8 minutes.  The time added to Northwest Airlines transatlantic flight by flying 10 m.p.h. slower, saving 162 gallons of fuel during the flight.

$42 million.  The projected savings in fuel costs that Southwest Airlines expects this year by reducing speeds, adding 1 to 3 minutes to its flights.                                            -via TIME

It’s amazing how much fuel can be saved by just sacrificing a couple extra minutes.