India's only budget airline launched its first service to major cities yesterday with its inaugural Airbus flight between this southern technology hub and the capital, New Delhi. Air Deccan is offering no-frills air travel between India's main cities at prices as low as a third of the cheapest fare charged by the full-service airlines in India. Air Deccan's Airbus service marked India's entry into the budget airline business, which has been booming in other Asian countries. At least half a dozen Indian airlines are waiting to see how the carrier performs before they launch rival cut-price services. Yesterday, some passengers...