Reaching Thekkady is not at all a problem, but how to go is the main question, your location is the important, if you are inside kerala, its better to reach Thekkady by road. Any how you planing by Rail or Air, you have to travel more than 100 Km by road, because all the rail and airport facility are 100 Km away, but you never be disapointed about the road journey, because of the scenic places on the way to Thekkady.
By Road : Thekkady is just 4 km away from the town Kumily on NH220, which links Kollam to Theni in Tamil Nadu via Kottayam, Peermade and Vandiperiyar. there is frequent buses, Taxi, Auto Rickshas available it will be more pleasure to have a walk from Kumily to Thekkady. Kumily is well connected with all major cities of Kerala and Tamilnadu. KSRTC(Kerala State Road Transport Corporation)(Phone : 04869-224242) public transport buses connect Thekkady with other nearby cities. Super fast buses are regularly available from Kottayam, Kochi and Trivandrum to Thekkady.
By Train : Nearest railway station is Kottayam, which is located at a distance of 114 km from Thekkady. Taxi services are available from Kottayam to Thekkady at the rate of Rs 2500.(approximate price, may change according to the price hike) Kottayam is well connected to all railway stations in India. All express trains have stop at Kottayam station.
By Air : Nearest airport to Thekkady is Madurai, Thamilnadu. Madurai is placed at a distance of 136 km away from Thekkady. Madurai Airport is connected to Chennai and Coimbatore. The major international airport near to Thekkady is Nedumbassery airport in Cochin, at a distance of 190 km away. Kochi airport is well connected to all cities in India and many matropolitian cities around the world. Tourist taxi services are available from Cochin to Thekkady and charge is about Rs 4000.(approximate price, may change according to the price hike)
Distance of a few major towns from Thekkady
Kumily: 4 km (15 mts) Sabarimala via Pullumedu: 50 km (2 hrs) Idukki: 65 km(2 1/2 hrs) Munnar: 106 km (4 hrs) Kumarakom: 128 km (4 hrs) Sabarimala via Erumeli: 134 km (4 hrs) Kodaikanal: 149 km (5 hrs) Alappuzha: 164 km (5 hrs) Kollam: 220 km (6 hrs) Ooty: 390 km (11 hrs).
Bus timings from Kumily :
Thekkady: 0930, 1045, 1130, 1200, 1230, 1330, 1530 hrs Kumarakom: 0700 hrs Munnar: 0600, 0945, 1330 hrs Ernakulam: 0700, 1330, 1515, 1630,1715, 1930 hrs Thiruvananthapuram (from Kumily): 0840, 0930 hrs; (from Thekkady): 0820 hrs Kottayam: Frequent buses Cherthala: 1415 hrs Idukki: Frequent buses Chennai: 1630, 1900 hrs Pondicherry Madurai: 0115, 0515, 0525, 0645, 0716, 0720, 0730, 0755, 0835, 0940, 1030, 1045, 1120, 1155, 1300, 1315, 1320, 1420, 1515, 1540, 1550, 1650, 1705, 1800, 1840, 1905, 2045 hrs Dindigal: Frequent buses Kodaikanal: There is no direct bus from Kumily to Kodaikanal. The Dindigal bus takes you to Vathalakundu from where there are frequent buses to Kodaikanal (149 km) Trichy: 0855, 1045, 1925 hrs Palani: 0930, 1135, 1830, 1850 hrs.