SkyWest Airlines reports it set a single-month record in March for revenue passenger miles, surpassing the previous rec-ord set last August.

During March, the regional carrier flew 16.2 million revenue passenger miles, a 34.2 percent increase over the 12.1 million in the comparable period last year.Available seat miles rose to 36.5 million from 30.1 million, up 21.1 percent. Passenger enplanements increased to 84,177, up 11.3 percent from 75,602. SkyWest's load factor was 44.5 percent compared to 40.1 percent last year.

On a year-to-date basis, SkyWest has carried 229,472 passengers compared to 203,400 during 1987, a 12.8 percent increase.

During March, SkyWest inaugurated "Delta Connection" service from Salt Lake City to Billings, Bozeman, Butte, Helena and Missoula, Mont., plus Boise on March 2.