While some claim 1 hour might be enough 'if you run,' 2 hours is very fast, and 2.5 hours could be insufficient if you need to retrieve luggage and transfer between terminals. MNL is a large airport; inter-terminal buses can get stuck in traffic. A minimum of 5 hours is suggested for a comfortable layover that allows time for baggage, currency exchange, SIM card purchase, and a meal, especially if transferring between different terminals (e.g., within T3 is easier). Flight delays into Manila are a common issue.
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