Hair by Heidi K At Avia Salon & Day Spa is located at 5500 Grossmont Center Dr, La Mesa, CA. This business specializes in Beauty Salons. Hair by Heidi K At Avia Salon & Day Spa is open Mon, 8am-8pm; Tue, 8am-8pm; Wed, 8am-8pm; Thu, 8am-8pm; Fri, 8am-8pm; Sat, 8am-6pm; Sun, 8am-6pm and accepts All Major Credit Cards, American Express, Cash, Discover, Mastercard and Visa.