http://www.marketwire.com/mw/release.do?id=864513

CALGARY, ALBERTA--(Marketwire - June 4, 2008) - WestJet (TSX:WJA) today announced May traffic results showing a load factor of 79.5 per cent on a capacity increase of 20.1 per cent, measured in available seat miles. As a result, almost 100,000 more guests flew with the airline year over year. Revenue passenger miles were up more than 19 per cent.

"Operationally, we like to run our airline at a load factor of between 78 and 82 per cent, which means right now we're right on target," said WestJet President and CEO Sean Durfy. "And when we operate in that zone while increasing our capacity by more than 20 per cent, it tells us there is continued demand for our exceptional guest experience."