During the 2017 summer season, it flew on behalf of its sister company Niki and was shuttered by then-bankrupt Air Berlin on 28 October 2017.

The company only flew in the summer and was mainly financed by federal subsidies and mail transportation for the Swiss post office.

In its early years, Balair was active in flight training, maintenance, and handling Swissair aircraft at Basel-Mulhouse Airport.

In 1993, Balair and CTA – Compagnie de Transport Aérien were merged and formed a new airline named BalairCTA.

After consulting Migros (its parent company), Hotelplan founded a new charter airline named Belair and transferred their Boeing 757s to it.

This increased Air Berlin's presence in Switzerland and provided Migros customers access to more flights.

Belair flew from Zürich, Basel, and Geneva to Mediterranean destinations and the Canary Islands.

Due to bilateral traffic rights, certain routes to non-EU countries continued to use Belair's IATA code, 4T.

On 15 January 2017, it was announced that Belair would shut down all routes from EuroAirport Basel Mulhouse Freiburg.

[2] In December 2017, it was reported that Belair lacked the funds to pay outstanding salaries and other expenses and might face bankruptcy.