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Another US passenger airline will now also fly cargo freighters as more carriers court package hauling as a new source of revenue

Business Insider Logo By tpallini@businessinsider.com (Thomas Pallini) of Business Insider | Slide 2 of 48: Phoenix-based Mesa Airlines operates hundreds of flights every day with hubs in nearly every time zone but doesn't sell its own tickets nor market its flights, and most passengers don't even know they're flying on the airline.

Phoenix-based Mesa Airlines operates hundreds of flights every day with hubs in nearly every time zone but doesn't sell its own tickets nor market its flights, and most passengers don't even know they're flying on the airline.

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