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Airline partnerships are difficult to track, and we’ll give you that one, they limit us. But there’s a relatively effortless way to better your lot: get a travel credit card and never worry about partnerships and alliances. The Discover it® Miles credit card fits the description best. Unlimited 1.5 miles per dollar on all purchases is more than you can earn with 2 points per dollar on a flight by a specific airline, and you can redeem earned miles with any airline! Besides your earned miles are matched at the end of the first year (provided you are a new cardmember), which basically gives you 3 miles per dollar on all purchases. Quite a thing to consider.