Air Canada reduced travel agency compensation on certain fares, effective April 1. The change followed increases in the airline's sales and distribution costs as a percentage of passenger revenue in each of the past three years.

A spokesperson confirmed that the carrier reduced commissions paid on some international airfare types, including interline and business-class fares. The moves, which impact only "Canadian" agencies, came despite an international expansion plan that includes more intercontinental flying and a bunch of new U.S. transborder routes.

Air Canada also bumped up agency compensation on . . .

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