Ireland must vote yes in the upcoming referendum on the European fiscal compact, because it has no choice but to go along with those paying for its continued existence, Michael O'Leary, CEO of budget airline Ryanair, told CNBC’s “Squawk Box Europe”.

Ireland and European Union

“I think Ireland will vote yes in the referendum and Ireland should vote yes. We have no alternative. People who are borrowing $15 billion a year to keep the lights turned on don’t have the wherewithal to vote no to the people that are lending them the money. There is no argument for voting no,” O’Leary said.