Singapore to Calcutta return. An adequate performance from this budget carrier. The flights were on time the comfort was adequate and the staff generally reasonably friendly. The only slight downside was the quality of food offered in the snackbox - barely edible pastries and deep fried cookies. However the flight is only about 4 hours so having little to eat wasn't a big problem. The tickets were 50% cheaper than the only other carrier to offer non-stop flights on this route (Singapore Air) so overall I was extremely pleased with Air India Express.