It was founded in December 2020 and commenced operations on 28 March 2022 to provide air service between Trollhättan and Stockholm.

[1] Västflyg was founded in December 2020 with the goal of restoring regular passenger flights from Stockholm to the Trollhättan region, which had lost commercial air service prior to the COVID-19 pandemic.

[1] In November 2023, Västflyg announced a seasonal route to the Scandinavian Mountains Airport, providing access to Sälen and Trysil for winter tourism.

For the Sälen-Trysil route, Västflyg planned to use the highest possible biofuel blend to minimize environmental impact.

[4] In 2024, Västflyg partnered with Trollhättan-Vänersborg Airport to become the first airline to operate all flights using a sustainable aviation fuel (SAF) blend.