1. Since the country is connected by road to various other Asian countries; it gives you multiple options for getting there. But the complexity might differ.
2. Of course, the easiest way is to fly to any of the Myanmar airports which has international connectivity. Most of the flights that fly from Mumbai will take you via Bangkok, Kuala Lumpur or other Asian destinations depending on the airline you select.
3. I flew from Kolkata since it gave me the cheapest ticket on Air Asia but still I had to fly via Bangkok.
4. Another option of getting into Myanmar is to go by land. You can enter the Myanmar gate by land from India, China, and Thailand. However, crossing the border via land can limit your journey throughout the country. And it is not really advisable to cross via land.