FOR IMMEDIATE RELEASE

Contact: Dick Fontaine
Senior VP- Marketing
(712)264-3190
(712)262-1000

GREAT LAKES AVIATION TO UPGRADE ALL UNITED EXPRESS FLIGHTS BETWEEN PIERRE, SD AND DENVER TO NONSTOPS BEGINNING APRIL 2, 2000.

Spencer, Iowa -- March 6, 2000 -- Great Lakes Aviation, Ltd. (NASDAQ:GLUX) today announced that beginning April 2, 2000, all three of its United Express flights between Pierre, South Dakota and Denver will be upgraded from one stop to nonstop flights. This will reduce elapsed flight time by 25 minutes and result in improved connecting opportunities at United Airlines' Denver hub.A third nonstop flight has also been added on Sundays on both directions. Saturday service will continue to be two round trip flights (both nonstop).

Weekday flights will depart Pierre at 7:50am, 12:30pm, and 6:25pm. Return flights will depart Denver at 12:30pm, 3:30pm, and 8:00pm and arrive Pierre at 3:01pm, 6:01pm, and 10:31pm respectively. All flights are timed to make convenient connections with more than 450 nonstop flights scheduled by United Airlines and United Express from Denver to more than 120 Destinations.

Pierre - Denver Schedule (effective April 2, 2000)

Pierre to Denver:
Flight 6520 Departs 7:50am Arrives 8:25amOperates Monday - Saturday
Flight 6520Departs 10:20amArrives 10:55amOperates Sundays
Flight 6528Departs 11:05amArrives 11:40amOperates Saturdays
Flight 6528Departs 12:30pmArrives 1:05pmOperates Sunday - Friday
Flight 6524Departs 6:25pmArrives 7:00pmOperates Sunday - Friday

Denver to Pierre (effective April 2, 2000)

Denver to Pierre:
Flight 6521Departs 12:30pmArrives 12:42pmOperates Sunday - Friday
Flight 6523Departs 3:30pmArrives 3:45pmOperates Daily
Flight 6527Departs 5:45pmArrives 6:37pmOperates Saturdays
Flight 6527Departs 8:00pmArrives 8:35pmOperates Sunday - Friday

Beginning April 2, 2000, Great Lakes Aviation will be providing United Express flights at 61 airports in 14 states with a fleet of eight Embraer-120 Brasilias and 40 Raytheon/Beech 1900D regional airliners.


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