Different airlines different procedures
[QUOTE=JohnGault;2765684]When I checked in with Spirit they wanted to see the Mig form.[/QUOTE]In September I went with JetBlue and they did not let me bag drop unless I showed them the Check Mig form. They also did not allow me to complete the check in online unless I uploaded my covid card or a negative test to their TrustAssure website.
The flight was messed up, so I missed my connecting flight and had to take American Airlines for the second leg of the trip. American Airlines would not let me bag drop without showing them the CheckMig, covid card, or negative test.
Upon arrival in Medellin they didn't ask for anything but the passport. Departing from Cartegena back to the US JetBlue did not allow me to bag drop unless I showed them the Check Mig, Migration didn't ask for anything but the passport and this is where many that only came with a carry on was unaware and had to step off the line and fill it out.
Mexico or Brasil or Colombia?
Ask Paul Nguyen which he he prefers.