Hi, top international honeymoon destinations are Nepal, Bhutan, Sri Lanka, Cambodia, Laos, Vietnam and Indonesia. Reaching these countries via air or road is usually cheaper. However, Laos is an exception as flight tickets are generally more expensive. Nepal and Bhutan are ideal for mountain lovers. Sri Lanka has beaches, wildlife, scenic train rides and Buddhist monuments. Cambodia, Laos and Vietnam are a mosaic of Southeast Asian culture along with spectacular jungles, beaches, Buddhist monuments and exciting food. Indonesia is probably the most diverse country after India in terms of people, culture and landscape. There is something for everyone there.
Thailand is a good place to manage vacations at a lower cost. You can look at Krabi or Koh Samui. You can also look at Bali - you can get amazing villas with pools all to yourself at low costs, but be prepared for hot and humid weather across.