According to the US government website, all non citizens must be fully vaccinated in other to enter the US by plane or land border. However, I have also read that airports are considered more like 'international zones' whereas you haven't actually entered a country until you pass the passport control to leave the landing zone of the airport. We bought some plane tickets to travel from Canada to Mexico. The flight there is direct so there shouldn't be any issues however the flight back has a layover in Charlotte, US. We just realized that one of the people in our group is not fully vaccinated. Would he be allowed on the flight home if he is not vaccinated? We don't plan on leaving the airport during the layover.


2 Answers 2


In the US, other than a few limited exceptions, contrary to what happens in most other countries, all passengers have to enter the US (go through passport control, retrieve bags, go through customs), whether their final destination is the US or they are in transit.

So the rules for all passengers boarding a flight to the US are the same, you need all documentation required to enter the US.


A - you're wrong about the land border. I(resident alien)'ve crossed a ton of times and even back when Canada had the vaccine requirement and you had to fill out your ArriveCan declaration, the US border guards never asked anything Covid related.

B - even for flights, the only proof I've ever shown in the US is a badly lit photo of my paper CDC vaccine card on my phone (that was filled in by me in the 1st place, because I did it early when the vaccination center was swamped, so the staff gave me a blank card and told me to fill it in myself, because they were too busy). There's no verification. This isn't like Canada that did spot checks in advance through ArriveCan. A photo of a physical card(don't know what province you're from, but BC had paper cards before the app, use that or the equivalent) + a bit of Photoshop and viola. I know it's frowned upon to suggest illegal actions, but vaccination status verification was a farce in the US even during the depths of the Pandemic and it would be silly to miss the trip due to something like this.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .