Each country has its own laws on requesting covid tests .. generally all countries ask for the test. You must check with the country to which you are going to travel
If you go to Colombia, it is mandatory that you have a Covid test, that you read PCR, and that only when you give them the negative results you have only 4 days = 96 hours from the moment you receive the results, to make your trip ... Good luck , and let me know how it was!
You do not need it at the airport, you would need it depending on which country you are going to travel to. Many countries are asking for proof to let you in.
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