How early should I be at Miami (MIA)?
Arrive 2 to 2.5 hours before a domestic flight.
Source: MIA Airport Security - Miami International Airport, checked 5 Nov 2026.
How early to be at MIA
- Domestic flights
- 2 to 2.5 hours before departure
From the airport's own advice. source
Check-in usually closes 40 to 60 minutes before departure. Your airline's own time is on its website and your booking, and it always wins.
An estimate, never a promise. Check your airline before you go. How we work this out