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Related Links to CPAP as carry on.... http://www.tsa.gov/travelers/airtravel/specialneeds/index.shtm http://www.tsa.gov/travelers/airtravel/specialneeds/cpap.shtm Somewhere I read that the CPAP doesn't count as carry on either. I.e. If they allow one carry on luggage your CPAP bag can be carried on ...