JetBlue Airways Corp. said on Tuesday that its May traffic rose 9.8 percent, more than twice as fast as the airline added capacity.
That meant its planes flew fuller, with occupancy rising 3.9 percentage points to 81.3 percent.
JetBlue said it flew 2.3 billion revenue-passenger miles in May, up from almost 2.1 billion during May 2009. A revenue-passenger mile is one paying passenger flown one mile; it's a key industry measure of traffic.
Capacity rose 4.5 percent to 2.83 billion available seat miles, from 2.71 billion a year earlier.
For the first five months of the year, traffic rose 7.4 percent to 11.13 billion revenue-passenger miles. Capacity rose 5.8 percent to 14.18 billion available seat miles. Load factor -- the industry term for occupancy -- rose 1.2 percentage points to 78.5 percent.
JetBlue shares rose 6 cents to $6.13 in afternoon trading.