marchello74 // Shutterstock

- Passengers: 4,441 (1.2% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 4,441

#14. Chicago Midway International (Chicago, IL)

Brian Wilson Photography // Shutterstock

- Passengers: 9,797 (2.7% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 9,797

#13. Nashville International (Nashville, TN)

Brittx // Shutterstock

- Passengers: 10,794 (2.9% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 10,794

#12. Orlando Sanford International (Sanford, FL)

Canva

- Passengers: 11,840 (3.2% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 11,840

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

Strike First // Shutterstock

- Passengers: 13,608 (3.7% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 11,179
--- #2. Breeze Aviation Group DBA Breeze: 2,429

#10. Los Angeles International (Los Angeles, CA)

Nadia Yong // Shutterstock

- Passengers: 15,457 (4.2% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 15,428

#9. Portland International (Portland, OR)

Dancestrokes // Shutterstock

- Passengers: 15,783 (4.3% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 15,720

#8. San Diego International (San Diego, CA)

Canva

- Passengers: 16,319 (4.4% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 16,319

#7. William P Hobby (Houston, TX)

Canva

- Passengers: 16,394 (4.5% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 16,389

#6. Austin - Bergstrom International (Austin, TX)

randy andy // Shutterstock

- Passengers: 23,329 (6.3% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 19,285
--- #2. Breeze Aviation Group DBA Breeze: 3,898
--- #3. Delta Air Lines: 146

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

Pete Niesen // Shutterstock

- Passengers: 26,003 (7.1% of all passengers)
- Top carriers:
--- #1. Breeze Aviation Group DBA Breeze: 26,003

#4. San Francisco International (San Francisco, CA)

Nate Hovee // Shutterstock

- Passengers: 29,551 (8.0% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 17,215
--- #2. Breeze Aviation Group DBA Breeze: 12,336

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

Canva

- Passengers: 68,396 (18.6% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 40,473
--- #2. Breeze Aviation Group DBA Breeze: 27,923

#2. John Wayne Airport-Orange County (Santa Ana, CA)

Nate Hovee // Shutterstock

- Passengers: 102,284 (27.8% of all passengers)
- Top carriers:
--- #1. Allegiant Air: 102,284

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. Phoenix - Mesa Gateway (Phoenix, AZ)