(Reuters) - WestJet Airlines (WJA.TO) flew fuller planes in May than a year earlier.
Canada's second-biggest airline's load factor - the percentage of available seats filled with paying customers - rose to 79.2 percent from 74.8 percent in May 2011.
Privately owned regional airline Porter said its load factor rose to 60.5 percent from 59.5 percent.
Calgary-based WestJet shares closed at C$15 on Monday on the Toronto Stock Exchange.
Reporting by Shounak Dasgupta in Bangalore; Editing by Don Sebastian