TFoxFoto // Shutterstock

- Passengers: 20,140 (0.9% of all passengers)
- Top carriers:
--- #1. Breeze Aviation Group DBA Breeze: 17,786
--- #2. Southwest Airlines: 2,205
--- #3. Swift Air, LLC d/b/a Eastern Air Lines d/b/a Eastern: 149

#20. Louis Armstrong New Orleans International (New Orleans, LA)

AevanStock // Shutterstock

- Passengers: 35,422 (1.5% of all passengers)
- Top carriers:
--- #1. Breeze Aviation Group DBA Breeze: 35,251
--- #2. JetBlue Airways: 148

#19. Tampa International (Tampa, FL)

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- Passengers: 40,969 (1.8% of all passengers)
- Top carriers:
--- #1. United Air Lines: 38,484
--- #2. Mesa Airlines: 2,388

#18. George Bush Intercontinental/Houston (Houston, TX)

randy andy // Shutterstock

- Passengers: 41,890 (1.8% of all passengers)
- Top carriers:
--- #1. Breeze Aviation Group DBA Breeze: 22,960
--- #2. Spirit Air Lines: 18,909

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

Andrew J Simcox // Shutterstock

- Passengers: 46,317 (2.0% of all passengers)
- Top carriers:
--- #1. Piedmont Airlines: 38,038
--- #2. Republic Airline: 2,876
--- #3. Air Wisconsin Airlines Corp: 2,702

#16. Philadelphia International (Philadelphia, PA)

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- Passengers: 55,275 (2.4% of all passengers)
- Top carriers:
--- #1. American Airlines: 55,275

#15. Miami International (Miami, FL)

Orhan Cam // Shutterstock

- Passengers: 56,042 (2.4% of all passengers)
- Top carriers:
--- #1. GoJet Airlines LLC d/b/a United Express: 32,117
--- #2. CommuteAir LLC dba CommuteAir: 17,756
--- #3. Air Wisconsin Airlines Corp: 3,579

#14. Washington Dulles International (Washington, DC)

Thiago Leite // Shutterstock

- Passengers: 65,101 (2.8% of all passengers)
- Top carriers:
--- #1. Endeavor Air: 55,482
--- #2. Republic Airline: 8,352
--- #3. JetBlue Airways: 1,262

#13. John F. Kennedy International (New York, NY)

marchello74 // Shutterstock

- Passengers: 65,426 (2.8% of all passengers)
- Top carriers:
--- #1. Southwest Airlines: 65,426

#12. Chicago Midway International (Chicago, IL)

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- Passengers: 68,592 (3.0% of all passengers)
- Top carriers:
--- #1. Endeavor Air: 40,710
--- #2. Delta Air Lines: 16,268
--- #3. SkyWest Airlines: 11,614

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

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- Passengers: 73,904 (3.2% of all passengers)
- Top carriers:
--- #1. GoJet Airlines LLC d/b/a United Express: 58,394
--- #2. Republic Airline: 15,102
--- #3. JetBlue Airways: 298

#10. Newark Liberty International (Newark, NJ)

Andrew Zarivny // Shutterstock

- Passengers: 92,685 (4.0% of all passengers)
- Top carriers:
--- #1. United Air Lines: 84,201
--- #2. Southwest Airlines: 4,616
--- #3. SkyWest Airlines: 3,868

#9. Denver International (Denver, CO)

mariakray // Shutterstock

- Passengers: 101,554 (4.4% of all passengers)
- Top carriers:
--- #1. Spirit Air Lines: 57,284
--- #2. JetBlue Airways: 44,123
--- #3. Southwest Airlines: 147

#8. Fort Lauderdale-Hollywood International (Fort Lauderdale, FL)

Songquan Deng // Shutterstock

- Passengers: 106,704 (4.6% of all passengers)
- Top carriers:
--- #1. JetBlue Airways: 55,374
--- #2. Spirit Air Lines: 51,104
--- #3. Southwest Airlines: 226

#7. Orlando International (Orlando, FL)

Thiago Leite // Shutterstock

- Passengers: 120,340 (5.2% of all passengers)
- Top carriers:
--- #1. Republic Airline: 63,499
--- #2. Endeavor Air: 56,454
--- #3. JetBlue Airways: 380

#6. LaGuardia (New York, NY)

marchello74 // Shutterstock

- Passengers: 121,483 (5.2% of all passengers)
- Top carriers:
--- #1. United Air Lines: 44,324
--- #2. GoJet Airlines LLC d/b/a United Express: 25,423
--- #3. Republic Airline: 17,515

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

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- Passengers: 125,180 (5.4% of all passengers)
- Top carriers:
--- #1. JetBlue Airways: 81,504
--- #2. Republic Airline: 42,731
--- #3. Endeavor Air: 945

#4. Logan International (Boston, MA)

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- Passengers: 126,657 (5.4% of all passengers)
- Top carriers:
--- #1. American Airlines: 126,657

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

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- Passengers: 318,538 (13.7% of all passengers)
- Top carriers:
--- #1. American Airlines: 311,129
--- #2. PSA Airlines: 6,740
--- #3. Republic Airline: 388

#2. Charlotte Douglas International (Charlotte, NC)

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- Passengers: 510,277 (22.0% of all passengers)
- Top carriers:
--- #1. Delta Air Lines: 403,802
--- #2. Southwest Airlines: 106,417

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. Hartsfield-Jackson Atlanta International (Atlanta, GA)