Last year was another strange one when it comes to travel. While Canada still considered unnecessary international travel to be ill advised, as did many other countries; for some they decided to risk it, pay the extra expense, and travel anyway.
Which meant there was a huge increase in flights from 2020 to 2021, but not quite back to pre-pandemic levels. Total global passengers in 2021 is estimated to be close to 4.5 billion, representing an increase of almost 25% from 2020, or a drop of more than 50% from 2019 results.
The busiest airports in the world made for a very different list from years past.
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