Bangladesh, Oct. 6 -- Indian low-cost carrier IndiGo has raised the fuel surcharge on its domestic and international flights, citing a sustained rise in aviation turbine fuel (ATF) prices.

The airline said the revised charges would apply to all new bookings made from 12:01 am on October 6. This is the second revision since the airline first introduced the surcharge in March.

Local media reports said ATF accounts for about 40% of an Indian carrier's operating costs. The ongoing conflict in the Middle East, which began in late February when Israel and the US attacked Iran, has significantly disrupted global crude oil supplies.

ATF prices in Delhi have climbed nearly 25% since July, from around INR 110 per liter to INR 137 per liter. Oct...