IndiGo Airlines, Air India Express and 4 other airlines fly from New Delhi to Coimbatore hourly. Alternatively, RedBus operates a bus from New Delhi to Coimbatore once daily. Tickets cost $8 - $12 and the journey takes 4 h 35 min. RedBus also services this route once daily.
How to get from New Delhi to Coimbatore
From New Delhi Metro to Delhi airport, fly to Coimbatore airport, then taxi to Coimbatore. 4 h 28 min $123. From Delhi bus to Alwar then bus to Coimbatore. 36 h 25 min $24. From New Delhi (NDLS) train to Coimbatore Junction (CBE). 41 h 40 min $51. From New Delhi drive to Coimbatore. 32 h 50 min $302.