Before you apply for a new credit card, we would recommend you to check your credit reports and remove some credit inquiries from your credit reports. You will need to contact the companies that pulled your reports to request removal of the inquiries. Once it is done, do not rush into application spree. Wait at least three months and only then apply for a new credit card. You can choose any travel rewards credit card issued by a major bank because such card will allow you redeem earned miles with any airline, including with Sun Country.