There is also an option for four more aircraft with delivery in 2023, the Oslo-based carrier said in a statement late on Tuesday.
The recently formed airline launched its first flights in June this year, betting that a recovery in demand from the COVID-19 pandemic will help it compete with established Nordic players SAS and Norwegian Air.
Flyr will lease the MAX 8 version of the plane, which has a maximum of 210 seats according to Boeing’s website.
The carrier said it aims to save fuel costs by using the plane and thus, also reduce its carbon footprint.
“On average, the Boeing 737-8 emits up to 14 percent less emissions than previous models,” Flyr said.
European regulators in January lifted a 22-month ban on flights of the Boeing 737 MAX after a design and pilot training overhaul in the wake of crashes that killed 346 people earlier.
By Terje Solsvik