I believe everyone is giving you solid info. Safe flying to you !!
Terminal 2 and that late 2 hours should be good.
Yes 3 hours earlier
Get there 3 hours before an international flight. Security lines can be long.
Avianca is in Terminal 2. It's recommended to arrive at the terminal 2 to 3 hours before departure. I'd get there 3 hours prior...
Yes, international flights check in 2 hours before. Lines can get long through security
Unfortunately I don't have an answer for you, recommend you contact the airline directly to find out
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