A United Airlines Boeing 737-900ER taxiing in golden hour light. The aircraft sports the modern Evo Blue livery and distinctive 737NG blended winglets.

United Airlines Boeing 737-800 (N77538) at the gate, ready for boarding at a major U.S. airport.

United Express Bombardier CRJ200 (N944SW) at the gate, readying for another regional flight.

A United Express Embraer 175 (N283SY) taxiing at the gate, wearing United's globe livery, a common sight in US regional operations.

United Express Embraer 175 (N138SY) at the gate, framed by airport operations at a busy terminal.

United Express Embraer 175 (N87380) at the gate in new globe livery, readying for another short-haul US domestic mission.

A United Airlines Boeing 737 MAX 8 (N27251) taxis at the terminal, with the aircraft's signature split scimitar winglets visible.

United Airlines Airbus A320-232 (N491UA) parked at a busy gate, sporting the airline's latest blue globe livery, with ground crew and vehicles preparing the aircraft for its next flight.

Air Canada Boeing 737 MAX 8 at the gate, featuring the airline's striking new black tail livery.

Frontier Airlines Airbus A320-214 in signature animal tail livery taxiing at a major US airport under dramatic skies.

United Airlines Airbus A320-200 rotates off the runway in the carrier's current blue globe livery.

ZIPAIR Boeing 787-8 Dreamliner taxiing at San Francisco International Airport, showcasing the airline's minimalist livery and the Dreamliner's iconic raked wingtips.

Breeze Airways Airbus A220-300 rotates off the runway in bright daylight, showing its modern blue livery and distinctive winglets.

United Airlines Boeing 737-800 (N27426) taxiing with split scimitar winglets at a major U.S. airport.

A United Airlines Boeing 737-900ER in the 2019 Evo Blue livery is seen taxiing at San Francisco International Airport, with a Dreamliner and other United jets in the background.

United Express Bombardier CRJ-700 (N780SK) taxiing at a major airport, wearing the latest Evo Blue livery.

United Airlines Airbus A319 taxiing at San Francisco International Airport (SFO), in the airline's latest globe livery.

United Airlines Boeing 737-824 (N27275) taxiing at a major US airport in the modern Evo-Blue livery.

United Airlines Boeing 787-9 Dreamliner (N17963) at the gate, showing off its elegant raked wingtips.

United Airlines Boeing 777-222 (N797UA) in the Star Alliance livery, spotted taxiing at San Francisco International Airport.