Yes, you can carry 2 checked bags with a combined weight of 20 kg for flights to and from Bangkok, Guangzhou, Kuala Lumpur, Male, Phuket, Singapore, Hanoi, Chengdu, and Ho Chi Minh.  For all domestic flights, only 1 checked bag is allowed and must not exceed 15 kg per passenger. To know more, review the Indigo airlines baggage policy.