Traveling through Singapore Airlines CUN Terminal You\ll arrive in Terminal 4, a sleek, contemporary hub made for a seamless travel experience. Easily check in at designated counters or self-service kiosks, then unwind in luxurious lounges. Before your flight, you can peruse the terminal\s numerous food establishments and shopping stores. Terminal 4 guarantees a hassle-free and pleasurable travel experience with its well-organized layout and excellent amenities.