India has absolutely no restrictions on which ports of entry an Indian citizen, PIO/OCI holder, or visa holder can enter the country (except for Pakistani citizens, who can only enter via MAA, DEL or BOM).
In the past, India did issue restricted visas to people of certain nationalities, which could only be used to enter India via a single port of entry. This restriction was removed a few years ago, and now visas can be used to enter India at almost any port of entry, even if they have such a restriction printed on them.
Note that there are restrictions on entry ports for e-visa holders. With an e-visa you can only enter via 28 international airports and five seaports. This covers almost every airport in India that you might think about flying through, so it should not be an issue for you, but you should double check that your intended airport of entry is on the list if you are using an e-visa.