randy andy // Shutterstock

- Passengers: 3,536 (1.1% of all passengers)
- Top carriers:
--- #1. Sun Country Airlines d/b/a MN Airlines: 3,534

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

Nadezda Murmakova // Shutterstock

- Passengers: 5,271 (1.6% of all passengers)
- Top carriers:
--- #1. Sun Country Airlines d/b/a MN Airlines: 5,271

#8. Southwest Florida International (Fort Myers, FL)

Nate Hovee // Shutterstock

- Passengers: 5,922 (1.8% of all passengers)
- Top carriers:
--- #1. Sun Country Airlines d/b/a MN Airlines: 5,922

#7. Phoenix Sky Harbor International (Phoenix, AZ)

Songquan Deng // Shutterstock

- Passengers: 11,234 (3.4% of all passengers)
- Top carriers:
--- #1. Frontier Airlines: 7,993
--- #2. Sun Country Airlines d/b/a MN Airlines: 3,241

#6. Orlando International (Orlando, FL)

Andrew Zarivny // Shutterstock

- Passengers: 15,648 (4.8% of all passengers)
- Top carriers:
--- #1. Frontier Airlines: 15,648

#5. Denver International (Denver, CO)

Canva

- Passengers: 43,316 (13.3% of all passengers)
- Top carriers:
--- #1. Delta Air Lines: 43,302

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

Vladimir Mucibabic // Shutterstock

- Passengers: 52,384 (16.1% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 36,738
--- #2. Endeavor Air: 15,011
--- #3. Delta Air Lines: 635

#3. Detroit Metro Wayne County (Detroit, MI)

ostreetphotography // Shutterstock

- Passengers: 59,792 (18.3% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 35,245
--- #2. Endeavor Air: 23,835
--- #3. Delta Air Lines: 712

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

marchello74 // Shutterstock

- Passengers: 121,207 (37.2% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 40,909
--- #2. Air Wisconsin Airlines Corp: 34,431
--- #3. Envoy Air: 27,123

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)