Hawaiian Airlines' planes were 85.4 percent full in April, up one percentage point from the same month a year earlier, the carrier said today.

The total number of passengers flown during the month dropped to 662,356, a 2.8 percent decline from April 2008. Revenue per available seat mile, which measures how much money Hawaiian made flying each paying passenger one mile, was unchanged in April.

For the first four months of the year Hawaiian's planes were 84 percent full on average, up 1.5 percentage points from the same period a year earlier. Revenue per available seat mile was down 1 1/2 percent.