YES Airways

OLT Express Poland was a Polish charter airline, formally known as Yes Airways. On 31 July 2012 it suspended all charter services, less than a week after the scheduled sister airline OLT Express Regional cancelled all its services. Stranded customers were returned home on LOT services. All leased aircraft were repossessed by lessors, and even some wet lease pilots were released back to their employer airlines. Its sister airline, OLT Express Regional, filed for bankruptcy on 27 July 2012 after its licence was suspended by the Polish Aviation Authority.

Summary from Wikipedia, licensed under CC BY-SA.