Bengaluru: AirAsia will shut down its online systems on June 21 for 27 hours due to maintenance, the Malaysian low-cost airline announced on Sunday. "Self check-in and 'manage my booking' will not be available from 12 a.m on June 21 to 3 a.m. on June 22 for scheduled maintenance of our online systems," the budget carrier said in a statement here. The Kuala Lumpur-based airline operates AirAsia India in the sub-continent as a joint venture with Tata Sons, connecting seven cities across India and seven overseas destinations in South East Asia, Australia and New Zealand. Guests travelling during the maintenance period are advised to check-in online, purchase add-ons and print their boarding passes earlier. "All our flights will, however, operate as scheduled during the maintenance period," the statement added.