When we arrived at the airport 40min before our flight we got told by the agent that they “close” the flight an hour before and we are unable to be on it. He then proceeds to answer multiple phone calls and ignore us for ten minutes before telling us we can take the next flight out...in four hours. Walked through customs and security in less that five minutes and arrived to our gate before the passengers had even left. A pair of gentlemen walked right out from security (after we had) walked right up and were able to get in line for the plane. We were probably at the gate for a good 10-15 minutes before the other passengers even left the area. There is zero explanation as to why we were unable to be on the flight other than the very clear fact that they gave away our seats.