United Airlines Boeing 737-800 (N26226) prepares for departure at Denver International Airport under clear blue skies.

Taxiing in the early morning or golden hour, this Southwest Airlines Boeing 737-800 wears the vibrant \'Heart\' livery with split scimitar winglets in front of a Frontier Airlines hangar.

United Airlines Boeing 737-800 (N34217) taxiing at the airport, viewed past distinctive split scimitar winglets.

Qantas Boeing 737-838 VH-XZJ \'Mendoowoorrji\' rotates in front of the Sydney Airport ATC tower, showcasing its unique Indigenous livery.

SunExpress Boeing 737-800 (TC-SOB) prepares for departure with distinctive split scimitar winglets.

MGA Boeing 737-800 (TC-MGN) in special \'goturkiye.com\' livery parked on the apron, featuring distinctive blended winglets and heart motifs on tail and engine.

SunExpress Boeing 737-800 (TC-SOB) at the gate, ready for another busy day of regional European and Turkish flights.

El Al Boeing 737-800 (4X-EKB) being pushed back at a major international terminal, ready for its next departure.

Norwegian Air Shuttle Boeing 737 MAX 8 (SE-NAE) taxiing at the gate in standard livery.

MGA Boeing 737-800 (TC-MGN) is seen taxiing at a Turkish airport in a special \'Heart\' livery promoting goturkiye.com.

American Airlines Boeing 737-800 N905NN at the gate in the classic retro \'Astrojet\' livery, paying homage to the airline\'s mid-century style.

Waiting at the gate.

BGY-RHO

BGY-RHO

Early morning in EKCH

Early morning in EKCH

TUI Boeing 737-800 in special RIU Hotels & Resorts livery at the airport on a sunny day.

Flew on this beauty earlier today.

Ryanair B737-8AS G-RUKF

SmartWings Boeing 737-800 (OK-TVY) at the gate, with distinctive split scimitar winglets.