Nothing much is known about the ancient history of Sandila. According to folk sayings, it was a forested area, believed to be the worship land of legendary sage Shandilya. As per the British chronicles, the history of Sandila town started in the medieval period after Mohammad Ghori’s capture of Delhi throne. Two brothers belonging to the martial Arakh Rajpoot clan viz. Salhia singh and Malhia singh established the towns of Salhiapura (later known as Sandila) and Malhiapura (later known as Malihabad), respectively. Sandila thus became the seat of Arakh power in early 13th century and became a flourishing town under Arakhs Rajpoot. Arakhs held the region till last quarter of the 14th century, when a large army sent by Feroz Shah Tughlaq under his lieutenant Syed Makhdum Alauddin, captured the town and the adjoining areas after a fierce battle with Arakhs. The remains of Arakh rule are seen in form of ruined fortresses in the mounds of Garhi Jindor, Malhaiyya garhi (Malaiyya), Sahinjana tila, Samad Khera, Muslewan garhi, Datli, Naurang garh (Tarauna), Sandi qila, and many others. After the decline of Arakh power, Sandila came under the rule of Delhi sultanate. The folklore of Arakhs (also called Arkawanshis or अर्कवंशी) still sings about the bravery of its heroes, Salhia and Malhia.In 1952 Biswas a flight lieutenant of Indian Air Force who was working in a Communication Flight unit in Lucknow took charge of the aircraft carrying army officials who were returning to New Delhi after an official visit. After it took off, suddenly a crew member observed an engine malfunction; subsequently a fire broke out. Biswas first tried extinguish it, but it was difficult to control. He decided to attempt a forced landing, and made a belly landing near Sandila town in Uttar Pradesh and successfully saved the lives of all the passengers. Biswas was awarded the Ashoka Chakra for his extraordinary example of bravery, intelligence and rationality.
- Falling Rain Genomics, Inc - Sandila
- "Census of India 2011: Data from the 2011 Census, including cities, villages and towns (Provisional)". Census Commission of India. Archived from the original on 16 June 2004. Retrieved 1 November 2008.