: Aim to arrive at least 2 hours before domestic flights and 3 hours for international travel to account for security and terminal navigation [2].

: You will need to place electronics and your liquid bag in a bin and walk through a metal detector or body scanner [2, 19]. 4. Navigating to Your Gate

: If you have checked luggage, visit your airline’s kiosks or counter. Ensure your bags meet weight limits and don't contain prohibited items [2, 14]. 3. Security Screening

: Large airports like Denver International divide airlines between different terminals (e.g., Terminal East for Southwest/Spirit, Terminal West for United/American) [8]. 2. Check-in & Baggage

: Adhere to the "3-1-1" rule (sometimes referred to as 3-3-3 ): liquids must be 3.4 ounces (100ml) or less per container, all fitting in one quart-sized clear bag [34].

: Listen for your boarding group or zone to be called. Have your boarding pass and ID ready for the gate agent [2, 14].

: Many airlines allow you to check in 24 hours in advance. This lets you skip the counter if you only have a carry-on [8, 14].