A Southwest Airlines Boeing 737-MAX8 sits parked at a gate at night, connected to the jet bridge.

A Southwest Airlines Boeing 737 MAX 8 sits at the gate at night, ready for another hop across the Southwest network.

A Southwest Airlines Boeing 737-800 taxis during a stunning golden hour after rain, with dramatic clouds and wet ramp reflections.

A Southwest Airlines Boeing 737-800 (N8537Z) sits at the gate amidst a double rainbow—a classic sight for aviation spotters at a US hub.

Southwest Airlines Boeing 737 MAX 8 prepares for departure at sunset, displaying its distinctive split scimitar winglets.

Southwest Airlines Boeing 737-800 sits on the ramp during a stunning golden hour, with characteristic split scimitar winglets visible.

Southwest Airlines' 'Freedom One' Boeing 737-800 on the ramp, featuring a bold U.S. flag-themed livery.

Southwest Airlines “Liberty One” taxiing at Denver International Airport