Expedia comes with a surprising offer on Mumbai flight booking: Mumbai is one of those cities in the world that says oodles about itself to anyone who visits or wishes to visit it. No matter where you come from and no matter how long you are here for, Mumbai will become a dear friend of yours. A User Can Book His Flight From Delhi TO Mumbai At Lowest Fares Starting Rs.3900. You Can Book your Flight 15-20 Days early To Get Best price. No Minimum Booking value Required. This Offer Is Valid For All users. Offer is valid for the limited period so book your flight right away and get this amazing deal.