Lyft is no stranger to offering perks with every trip. Its latest bonus will be more than a little useful if you're a frequent flier, though. The service just unveiled a partnership with Delta that has you earning SkyMiles with every ride. After you link your Lyft and SkyMile accounts, you'll earn one mile for each dollar you spend. There's also a promo running until August 31st that will triple your miles whenever you travel to or from the airport.