Feger said the decline was attributable partially to JetBlue's elimination of two daily daytime flights out of the airport in January, but also to an overall reduction in leisure travel.
"The summer months historically were when people did leisure travel, and I think that's the bigger victim here," he said. "In terms of people electing not to spend discretionary money on flying, they spend it on other things they have to spend their money on."
During the first six months of 2013, roughly 1.9 million passengers traveled through the airport, a 4.2% drop from roughly 2 million passengers during the same period last year.
Despite being one of two airlines to post an increased passenger count at the airport in June, Southwest is cutting one round-trip Saturday flight from each of its destinations, except Denver, starting on Aug. 11. U.S. Airways also reported additional passengers.
Southwest spokesman Chris Mainz said in an email that the cuts were a standard practice to maximize revenue at airports, such as Bob Hope, that are used mostly by business travelers.
"For Saturday operations, Southwest will reduce flying in business markets and reallocate the aircraft elsewhere in our route network to take advantage of leisure passenger demand markets," he said.
Meanwhile, other airports in the region reported varying passenger totals in June. Los Angeles International Airport and John Wayne Airport in Santa Ana saw 6.5% and 3.4% increases, respectively. However, Ontario Airport reported an 8.5% decline, and Long Beach Airport saw a 9% drop.
Once again, a continued rise in parking revenues was a bright spot for Bob Hope Airport. Parking revenues increased by 4.5% in June, bringing in roughly $1.5 million, compared with $1.45 million in June 2012. The increase was attributable to recent rate hikes in the airport's parking lots, according to Feger.
Follow Daniel Siegal on Google+ and on Twitter: @Daniel_Siegal.
Grenades prompt evacuation of Glendale police HQ
Area residents react to President Obama's Burbank visit
Rescued race horse 'Silver Ray' is headed home to a Kentucky shelter