StacieStauffSmith Photos // Shutterstock

- Passengers: 4,214 (1.1% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 4,214

#13. Myrtle Beach International (Myrtle Beach, SC)

Andrew J Simcox // Shutterstock

- Passengers: 9,403 (2.4% of all passengers)
- Top carriers:
--- #1. Piedmont Airlines: 9,403

#12. Philadelphia International (Philadelphia, PA)

Nate Hovee // Shutterstock

- Passengers: 11,764 (3.1% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 11,764

#11. Phoenix - Mesa Gateway (Phoenix, AZ)

Creative Couple Media // Shutterstock

- Passengers: 13,623 (3.5% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 13,623

#10. Sarasota/Bradenton International (Sarasota/Bradenton, FL)

randy andy // Shutterstock

- Passengers: 15,007 (3.9% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 15,007

#9. Harry Reid International (Las Vegas, NV)

Brittx // Shutterstock

- Passengers: 20,360 (5.3% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 20,188
--- #2. Global Crossing Airlines: 172

#8. Orlando Sanford International (Sanford, FL)

ostreetphotography // Shutterstock

- Passengers: 20,576 (5.4% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 20,576

#7. Minneapolis-St Paul International (Minneapolis, MN)

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- Passengers: 25,664 (6.7% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 25,664

#6. St Pete Clearwater International (St. Petersburg, FL)

Khairil Azhar Junos // Shutterstock

- Passengers: 29,746 (7.7% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 29,746

#5. Punta Gorda Airport (Punta Gorda, FL)

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- Passengers: 46,557 (12.1% of all passengers)
- Top carriers:
--- #1. Piedmont Airlines: 46,557

#4. Charlotte Douglas International (Charlotte, NC)

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- Passengers: 51,259 (13.3% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 25,931
--- #2. Envoy Air: 25,328

#3. Dallas/Fort Worth International (Dallas/Fort Worth, TX)

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- Passengers: 55,115 (14.3% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 55,115

#2. Hartsfield-Jackson Atlanta International (Atlanta, GA)

marchello74 // Shutterstock

- Passengers: 78,131 (20.3% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 48,908
--- #2. Air Wisconsin Airlines Corp: 15,051
--- #3. Envoy Air: 8,906

This story features data reporting by Rob Powell, writing by Jaimie Etkin, and is part of a series utilizing data automation across 199 metros.

#1. Chicago O'Hare International (Chicago, IL)