Due to the recent change of the company's owner, the airline fell under the jurisdiction of US regulators.
"While we are settling this issue with the US Office of Foreign Assets Control, the company suspends ticket sales for flights to Cuba and from Cuba beginning on October 31," the company said in a statement late on Thursday.
Since being sworn in in early 2017, US President Donald Trump has imposed various rounds of sanctions against Cuba. The restrictions became a U-turn in the US policies on Cuba since the two states saw a rapprochement during the administration of former US President Barack Obama. However, the Cold War-era embargo imposed on Cuba has never been lifted.