New Delhi, Oct. 18 -- Flying out of Mangaluru airport could become substantially more expensive over the next five years, with operator Adani Airport proposing to nearly double user development fees by fiscal year 2031 (FY31) to help fund a Rs.4,200-crore investment plan.

Passengers currently pay a user development fee (UDF) of Rs.735 for domestic departures and Rs.1,120 for international departures. The proposed revision would raise these charges to Rs.890 and Rs.1,360, respectively, from 1 December 2026, subject to regulatory approval. By March 2031, the fees would reach Rs.1,440 for domestic departures and Rs.2,210-increases of about 96% and 97%, respectively.

The proposed tariffs will rise by 20-22% across each of the first three re...