Aegean Airlines ZAG Terminal serves as the central hub for both arrivals and departures, offering streamlined check-in and boarding processes. Passengers can utilize self-service kiosks or traditional counters, with check-in desks opening two hours before departure and closing 40 minutes prior to takeoff .

Within Terminal 1, travelers have access to a wide array of amenities designed to enhance their airport experience. These include duty-free shops, restaurants, cafés, currency exchange services, and complimentary Wi-Fi for the first 15 minutes. For premium passengers, Aegean Airlines offers access to the Primeclass Lounge, located in the Schengen zone on the second floor opposite Gate 23. This lounge provides a comfortable environment with plush seating, high-speed Wi-Fi, and a selection of food and beverages .

Additional services at the terminal encompass baggage handling, lost and found, medical assistance, and facilities for passengers with reduced mobility. For those traveling with pets, Aegean Airlines allows one cabin pet per passenger, provided the total weight does not exceed 8 kg, including the carrier. Passengers are advised to arrive at the terminal three hours before departure when traveling with pets .

Overall, Aegean Airlines' operations at Zagreb's Terminal 1 are designed to provide a seamless and comfortable travel experience for all passengers