When you fly Southwest Airlines, you know you’re getting an Economy seat at an affordable price. Southwest consistently ranks among the best airlines for customer service, but the one complaint people have is not getting a good seat because they checked in too late.

If you don’t have the new Southwest Rapid Rewards Priority credit card that gives you free boarding upgrades, you can pay an extra $15 (or more, depends on popularity and length of each one-way flight) to check in earlier than everyone else. But should you buy Southwest Early Bird check-in?