Anyone who goes to Dublin Airport just to avail of the pubs being open may be in breach of airport bye-laws.
A spokesperson for the airport said that people booking cheap flights in an attempt to drink inside with no intention of boarding their plane could be punished.
Dublin Airport is deemed an essential service and therefore all food and beverage outlets can open in the airport after security even in Level Five.
However, anyone buying alcohol has to purchase a €9 meal with that rule still in place.
But the airport is looking to deter anyone from using these laws as a "loophole" after a social media post this week.
A group of four claimed on social media that they bought flights for €9.99 just to go on a session.
The post said: "When the pubs are closed and the only place serving is the airport, so you book a €9.99 flight (that you have no intention of getting on) to go for beers with the lads, down there for dancing."
And Dublin Airport has responded to the apparent claims but said they are not aware of this happening regularly.
A Dublin Airport spokesperson said: "The Government has indicated that the operation of Irish airports is an 'essential service' within the Level 5 guidelines.
"The provision of food and beverage facilities in the airside area – i.e. after security - to the very small number of people who are travelling at present is part of that service. The operator of the outlet in question requires anyone purchasing alcohol to also purchase a substantial meal at a cost of €9.
"If, as is claimed, four individuals went through security with no intention to travel, but rather to avail of that food and beverage service, that would appear to be a breach of airport bye-laws which state that “a person may not engage in any activity which jeopardises or interferes with the … orderly operation of an airport.
"The intentional breach of airport bye-laws Dublin Airport would leave an individual open to a possible court appearance.
"We have no evidence whatsoever that such activity is occurring, other than a single post on a specific Facebook page.
"If, as it is claimed, four individuals engaged in this activity and booked flights at a cost of €9.99 each, then each would also have had to purchase a €9 meal. Therefore, the group would have had to spend €75.96, plus the cost of travel to and from Dublin Airport, before they bought a single alcoholic beverage."
