what is the best airline rewards credit card?
['Chase Sapphire Preferred® Card. ... ', 'Discover it® Miles. ... ', 'Capital One® Venture® Rewards Credit Card. ... ', 'Delta SkyMiles® Blue American Express Card. ... ', 'Delta SkyMiles® Gold American Express Card. ... ', 'Citi® / AAdvantage® Platinum Select® World Elite™ Mastercard® ... ', 'United℠ Explorer Card.']