The Kerry Tourism Industry Federation says it has serious concerns about reports Ryanair will operate the Kerry-Dublin flight route on a commercial basis.
The KTIF says passenger number statistics confirm the commercial viability of the route is assured only through PSO state support, and Ryanair's proposal to operate it without financial support must be questioned.
The Federation also says it's critical that flexible connectivity is available to passengers, and this connectivity also applies to their luggage.
It adds the ability of passengers to check luggage through to their final destination from their departing airport is common practice, but this facility is not available with the Ryanair option.
Meanwhile, the Kerry branch of the Irish Hotels Federation says it's vital the Transport Minister commits to retaining the PSO structure as an ongoing safeguard to support the financial viability of same-day return air access from Dublin.