Great Lakes Aviation, Ltd. announced preliminary passenger traffic results for the month and year to date ended of May 2015. For the month, passengers enplaned were 9,341 against 16,133 a year ago. Revenue passenger miles were 2,630,000 against 4,623,000 a year ago. Available seat miles were 6,199,000 against 9,933,000 a year ago. Load factor was 42.4% against 46.5% a year ago.

For the year to date, passengers enplaned were 44,726 against 87,417 a year ago. Revenue passenger miles were 12,564,000 against 25,105,000 a year ago. Available seat miles were 34,642,000 against 60,411,000 a year ago. Load factor was 36.3% against 41.6% a year ago.