Southwest Airlines charges between $15 and $99 per person, one way, for EarlyBird Check-In. The exact cost varies based on factors like the length of the flight, demand, and route. EarlyBird Check-In automatically checks you in 36 hours before your flight, securing an earlier boarding position but does not guarantee the very first spots reserved for Business Select passengers. The fee is per leg, so round-trip travelers must purchase it for each flight segment separately.
