LN-KKN is a Boeing 737-300 from Norway-based airline Norwegian, here seen parked at Oslo Gardermoen airport’s gate 40.

A Norwegian Boeing 737-300, LN-KKH, is pushed back in preparation for a flight from Prague airport to Norway.

Thor Heyerdahl decorates this Boeing 737-300 from Norwegian, which is on short final for Stockholm Arlanda’s runway 26.

A Boeing 737-300 from Norwegian, LN-KKG, is parked at Oslo Gardermoen’s gate A41 early in the morning.

LN-KHA is a Boeing 737-300 with winglets from low-cost carrier Norwegian, arriving at Stockholm’s runway 26.

Pegasus is a Turkish charter airline, here represented by TC-TJB, a Boeing 737-300, visiting Zurich.

The pilots of this Boeing 737-300 from Norwegian, with registration LN-KHC, are busy preparing the airplane for departure from Oslo’s Gardermoen airport early in the morning.

A Norwegian Boeing 737-300, LN-KKE, is preparing for touchdown on Stockholm Arlanda’s runway 26 after a flight from Oslo.

A British Airways Boeing 737-300, G-LGTG, is visiting Zurich. I believe this airplane is based at London Gatwick airport.