Should they all be competitive and to give similar price and take a few dollars for “services”? Delta Air Bombay-London (via New York) round trip costs $ 4,316. 00 (+ tax) (Source: website of Delta), while my local agent travel Bombay-New York (return) for Emirates, Thai Air, Etihad, Singapore Airlines at $ 900 + tax (return). Air India may even $ 800 + tax (return) is. In addition, Bombay-London-Mumbai only $ 500 (plus tax) returns for airlines like Finn Air, Virgin Atlantic, Jet Airways, Air France, Thai Air, Singapore Airlines, but the same, Austrian Airlines, Lufthansa, Swiss Air and SAS will be $ 1,200 or more (plus taxes) .- Can you explain the math here? And usually I find websites are much more expensive than the Travel Agents for an airline called Tiger Airways, whose website is very economical rates between India and Asia-Pacific