United airplanes are seen at the Newark Liberty International Airport in Newark, Unitted States on July 16, 2024.United Airlines is plotting a 2025 international expansion that spans Senegal to Mongolia and Greenland to Palau, a bid to win over travelers who have already had their fill of the well-trodden streets of Paris, Rome and Tokyo.Starting May 21, United will fly three times a week between its Newark, New Jersey, hub to Palermo, Sicily; on May 16, it will launch nonstops four days a week to Faro in P ...