Flight booking phone number at quad city airport During the months of summer vacation and the week of Thanksgiving, Quad City International Airport is usually crowded with traffic. One can use the flight booking phone number at quad city airport to get a departure time confirmation, find another route and also get connecting flight information. Many travelers take routes to places in Chicago, Dallas, and Denver, the seats become full quickly and therefore a call made in advance will not only confirm the information regarding the seat availability.