Bookings as well as airfares for flights to Prayagraj have jumped multi-fold as more people travel for the Maha Kumbh, with the air ticket prices rising up to 21 per cent for the Delhi-Prayagraj flights.According to an analysis by travel portal ixigo, the one-way airfare between Bhopal and Prayagraj has surged the maximum at 498 per cent to Rs 17,796 from Rs 2,977 last year.