Vladimir Mucibabic // Shutterstock

- Passengers: 4,860 (3.6% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 4,567
--- #2. Endeavor Air: 251

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

Thiago Leite // Shutterstock

- Passengers: 9,200 (6.9% of all passengers)
- Top carriers:
--- #1. Endeavor Air: 9,200

#4. LaGuardia (New York, NY)

Canva

- Passengers: 20,990 (15.7% of all passengers)
- Top carriers:
--- #1. GoJet Airlines LLC d/b/a United Express: 20,964

#3. Newark Liberty International (Newark, NJ)

Andrew J Simcox // Shutterstock

- Passengers: 41,292 (30.8% of all passengers)
- Top carriers:
--- #1. Piedmont Airlines: 40,058
--- #2. Air Wisconsin Airlines Corp: 1,234

#2. Philadelphia International (Philadelphia, PA)

marchello74 // Shutterstock

- Passengers: 54,257 (40.5% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 36,434
--- #2. Air Wisconsin Airlines Corp: 13,460
--- #3. Republic Airline: 3,632

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)