Visiting India from Thailand has been a frequent ritual sometimes as a visa run and sometimes as a social visit. The easiest way into India is on Air Asia Bangkok to Chennai , south India. The Journey started in Phitsanulok, a northern Thai city. The bus from Phitsanulok to Bangkok took 5 hours, there were a lot of good views of the Thai countryside and smooth black road. On the bus i got a seat right behind the windshield on the upper deck. I’ve posted this video here. The bus passed by the Don mueng airport after the first stop at Rangsit. If you intend to go to the Don Mueng Airport, get off at the first stop.