Pro Air was in direct competition with Northwest Airlines on many of its routes. The airline originally started with a single fare for all passengers, but about 18 months afterwards it implemented tiered fares with advance purchase requirements. It also served full meals in coach (in addition to first class) but scrapped the program after realizing that the cost of the meal accounted for, on average, 10% of the fare that the customer paid. It was known for its signature "hot meal" service (even on the 35 minute DET-MDW route) in First Class along with premium alcoholic beverage service, and was the only airline to charge a mere $2 for beer and wine in Economy class (mixed drinks were $3).