Frontier Airlines Airbus A321-200 N660FR taxis across the apron in bright daylight, wearing its Wood Stork tail artwork.

Taxing for departure KAVP. To charlotte

An American Airlines Airbus A321 climbs away with its landing gear still extended in warm evening light.

Delta Air Lines Airbus A321 N307DX taxis along the runway in warm evening light, with its sharklets and distinctive red-and-blue tail visible.

Several Delta Air Lines jets cross the frame against a clear blue sky, with an Airbus A321 prominent in the foreground.

Taxiing at PHX.

Gate area at PHX.

A Lufthansa Airbus A321-200, registration D-AIBD, taxis across the apron beneath a dramatic bank of clouds.

Taxiing at ORD.

Taxiing at ORD.

Pushback at ORD.

An American Airlines Airbus A321 taxiing at a major airport under overcast skies.

American Airlines Airbus A321 sporting the special 'Stand Up To Cancer' livery, seen at the gate on a cloudy day.

Passing by at ORD.

Taxiing at PHX.

Landing at PHX.

A little taxi help at PHX.

Taxiing at PHX.

Taxiing at PHX.

A Delta Air Lines Airbus A321 climbs out after takeoff, catching the sunlight on its distinctive tail.