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Uber said it’s stopping its service at Ontario International Airport next month because of fee increases.

The airport east of Los Angeles now charges ride-hailing companies such as Uber and Lyft $4 for a drop-off or pickup, up from $3. The new fees, which went into effect July 1, were approved in June by the Ontario International Airport Commission.

San Francisco-based Uber calls the charges unfair because taxi cabs and limousines are assessed a single $3 fee that covers both a drop-off and a pickup. It plans to halt service to the airport starting Sept. 13.

The fee increase came after a nearly two-year evaluation of all of the airport’s transportation partners, in which Ontario airport benchmarked its ride-hailing prices compared with those at other airports in Southern California, said Atif Elkadi, Ontario airport’s deputy chief executive. For example, Los Angeles International Airport charges ride-hailing companies $4 per drop-off or pickup.

Read the full story on LATimes.com.