2 hours
Honestly no less than 1 1/2 hrs before your flight.
2 hours in advance.
Takes about 30 minutes to get through security. 1-2 hrs early would be my recommendation!
If checking bags make sure you are checking in at least one hour before your flight. We have had our luggage denied for checking in 52 minutes before the flight
I left denver on Friday took me 20 min total to get through the security check and to my terminal
1 to 1.5 hours, you never know how long it will takes to get through security.
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