Essential checklist for a domestic flight
For a domestic flight, a valid identity card is sufficient: a passport is not needed and wait times at security checks generally remain shorter than those of an international route.
Documents and airport arrival times
A valid identity card is sufficient for any movement within your own country, without needing a passport (here are the details on which document is actually needed). The advance margin required is often more limited compared to an international flight, but airlines still recommend a certain margin, because security check queues and boarding procedures remain identical to those of an international flight.
Baggage and security rules
The carry-on baggage rules, including the 100 ml limit for liquids, do not change for a domestic flight: the same security thresholds apply to any other route of the same airline. It's therefore worth checking weight and allowed dimensions before leaving home, even if the destination is in your own country.
The journey to the airport
A domestic flight does not eliminate the risk of delays or queues at security checks, especially at busier airports during peak hours. Checking in advance the opening times of public transport or expected traffic to reach the terminal remains useful regardless of the nature of the flight.
The most useful check for a domestic flight remains only one: verify the opening hours of the security gates at your departure airport, because on a domestic route the margins to recover a delay are narrower.
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