J.D. Power has released its annual rankings for the best airports in North America.

The findings are based on more than 30,000 flyer surveys from U.S. or Canadian residents.

Key metrics included in the survey were:

How easy it is to travel through an airport

Level of trust or confidence in an airport

Facilities

Airport staff

Departure and arrival experiences

Food and retail

Airports that incorporate food and local brands to create a "genuine sense of location" see a big boost in their scores and how much people spend while they are there, according to J.D. Power's rankings report.

Best airport winners

The survey divided the airport rankings based on number of travelers.

The biggest airports – ones called "mega" airports – are defined as those with at least 33 million passenge

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