She said an airport staffer told her there were 160 passengers passing through the airport on Monday, plus their supporters, and there were no refreshments available due to the cafe being shut.
In February Ms Baker-Hogan wrote to the Chronicle over the issue.
"If our council can't influence our retailers or our airport to try and reap some economic development benefits and bring back visitors to Whanganui, then what a damn waste of ratepayer money.
"Whanganui - all you need and then some - how about an inviting airport?
The airport website claims the cafe is open seven days a week providing breakfast, brunch and snack options together with espresso coffee, teas and a wide range of cold drinks.
It does not mention being closed on public holidays.
Airport manager Allan MacGibbon said the decision to close on public holidays was made by the airport board and was based on his recommendation.
"This has been the subject of a number of reports to council. It is about controlling losses," Mr MacGibbon said.
He said further comment should come from board chairman Matt Doyle, who was unable to be contacted yesterday.