You can find cheap flights to Secunderabad regularly throughout the year. All of the domestic carriers, including Air India, Kingfisher, and Air Sahara offer Secunderabad flights. International carriers like British Air and Cathay Pacific fly there too, but don't expect cheap Secunderabad flights from the larger carriers. To get from the airport to town, your cheapest option is to purchase a ticket for the Pushpak, which is a bus that runs constantly throughout the day and night. There is also a local bus service called APSRTC, but it's not as comfortable or reliable as the Pushpak bus service.
Since there is so much ground to cover in Secunderabad, a reasonable transportation option for travelling around the city is to rent a car from Carzonrent or Akbar Travels. Driving in the city is a thrilling, though not altogether safe activity, so a car and driver is a better method to explore the city at a reasonable rate. You will be swamped with offers for cars and drivers at any public place, like the airport on arrival. It's best to ignore these and wait until you arrive at your hotel to ask for recommendations. Orange cabs and Meru cabs are two of the best services to get you around town safely and efficiently.
Many tourists on the way to or from Chennai find Secunderabad to be a quiet and restful sanctuary, in part due to the peaceful temples like Sri Subrahmanyaswamy Temple and the nature preserves such as Konaseema. Another main attraction in Secunderabad is the Nehru Zoo. A visit to this zoo is worth a detour from your travel route for its Lion Safari and nocturnal animal displays. To make your visit even more worthwhile, the tickets are really cheap. If you're into history, you can take a fascinating look into the history of India at the Salarjun Museum, with its prehistoric art displays and remnants of a succession of kingdoms.
With the money you saved on a cheap flight to Secunderabad, you can enjoy the many shopping, dining and night life activities in the area. Shopping is one the the main events in Secunderabad and the prices are inexpensive. Along with its sister city Hyderabad, across by the massive Tank Bund Bridge, forms an oasis of great prices on unique gifts. Stop in the Meena Bazaar for saris, salwars, kurtas and local crafts. Both cities are known for street corner custom perfumers who will whip up your own personal perfume while you wait. At night, stop in for a hookah at Mocha and meet some locals who will tell you where the best dining and night life has moved to this month. 10 Lounge is popular; though, it may be too trendy by the time you arrive. Nothing is open very late in this double city so go out early and make it count.