Not for national flights. But is required for international flights.
No one is checking that for domestic flights. I would check with your airline regarding international travel.
There is 2 options. With vacune or white a negative test. But you have to check the airline requirements . ;)
The problem is not being check, thats regardless protocol is policy no matters what. What i find uncallfore is that if you have a conecting fight and Miami is not your destination. Why you have to check out go through through the mile long line through emigración and comeback to checking again. My expirience i only had a 2 hours to board my flight in between. It took me one hour just to make it out of emigración to get back in a very long line to checking again no way i was going to make it on time to my conecting flight to Philadelphia. Lucky a very nice lady that work at the airport help me and talk to someone who put in front and was able to get to my plane 10 minutes before the close the doors. I can imagen how many people lost the destination flight just because that system is so terrible. You need at least 5 hours just to be able to get to your conecting flight on time. In my opinión you should only check out on emigración un your destination when flying internacionaly.
Yes...but not checked by anyone in the airport
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