Jet Airways (the major private domestic airline in India) is fantastic. Electronic ticketing. Rapid and friendly checkin. Excellent food. Great service. The plane was 2/3 empty, however. This appears largely to be because they match the prices of the dominant government-owned carrier. While you can get slight discounts as a tourist on Indian Airlines if you buy well in advance, Jet Airways is well worth the extra 5%. Domestic airlines, in general, are fixed price and somewhat expensive ($300 for a one-way 1500 mile flight). But it beat a 22-hour train ride.