India is easily accessible by air, and most international visitors arrive in India by flying into one of the major international airports, such as Indira Gandhi International Airport in Delhi, Chhatrapati Shivaji Maharaj International Airport in Mumbai, or Kempegowda International Airport in Bangalore.
International flights to India are operated by a number of airlines, including major carriers such as Air India, Emirates, Etihad Airways, Qatar Airways, and Singapore Airlines, among others.
If you're traveling from neighboring countries, such as Nepal or Bangladesh, it's also possible to enter India by land. There are several land border crossings, including at the border between Nepal and India, and the border between Bangladesh and India.
Once you arrive in India, there are several transportation options to travel within the country, including trains, buses, taxis, and domestic flights. Domestic flights are a popular option for long-distance travel, while trains are a popular and affordable option for shorter distances. Buses and taxis are also available for shorter distances, but be sure to negotiate fares in advance.
It's also important to note that India requires all foreign nationals to have a valid passport and visa for entry. Visa requirements vary depending on the country of origin, so be sure to check the requirements and apply for a visa well in advance of your travel dates.