OMA Premium Lounge at Chihuahua sits airside after Security Checks; Priority Pass directs passengers to the 1st Floor and to the lounge at the end of the hall on the right. The strip lists International and Domestic passengers, daily 05:00–21:30 hours, a 3-hour maximum stay, under-5 free entry, digital cards, complimentary standard alcoholic drinks limited to three per adult, and a rule that food and beverages must be consumed inside. OMA’s own page matches 05:00–21:30 hours, accepts Priority Pass and LoungeKey, and sells day passes at MXN 499 (web) or MXN 600 (lounge counter, cards only).