TRIPADVISOR INC revenue for the last year amounted to 1.77 B EUR, the most of which — 811.42 M EUR — came from its highest performing source at the moment, Viator, the year earlier bringing 667.73 M EUR. The greatest contribution to the revenue figure was made by United States — last year it brought TRIPADVISOR INC 1.19 B EUR, and the year before that — 1.09 B EUR.