marchello74 // Shutterstock

- Passengers: 9,453 (1.0% of all passengers)
- Top carriers:
--- #1. United Air Lines: 9,432

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

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- Passengers: 21,272 (2.2% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 21,269

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

Nadia Yong // Shutterstock

- Passengers: 31,401 (3.2% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 30,318
--- #2. Horizon Air: 1,083

#9. Portland International (Portland, OR)

Dancestrokes // Shutterstock

- Passengers: 53,242 (5.4% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 49,478
--- #2. Alaska Airlines: 3,154
--- #3. Southwest Airlines: 474

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

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- Passengers: 64,725 (6.6% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 63,239
--- #2. United Air Lines: 1,369
--- #3. Breeze Aviation Group DBA Breeze: 117

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

Canva

- Passengers: 66,622 (6.7% of all passengers)
- Top carriers:
--- #1. SkyWest Airlines: 66,416
--- #2. Southwest Airlines: 206

#6. Salt Lake City International (Salt Lake City, UT)

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- Passengers: 73,810 (7.5% of all passengers)
- Top carriers:
--- #1. Alaska Airlines: 47,616
--- #2. SkyWest Airlines: 23,800
--- #3. Horizon Air: 2,385

#5. Seattle/Tacoma International (Seattle, WA)

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- Passengers: 118,995 (12.0% of all passengers)
- Top carriers:
--- #1. American Airlines: 84,716
--- #2. SkyWest Airlines: 23,667
--- #3. Envoy Air: 5,433

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

Andrew Zarivny // Shutterstock

- Passengers: 136,652 (13.8% of all passengers)
- Top carriers:
--- #1. United Air Lines: 59,203
--- #2. Southwest Airlines: 47,218
--- #3. SkyWest Airlines: 30,231

#3. Denver International (Denver, CO)

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- Passengers: 203,152 (20.6% of all passengers)
- Top carriers:
--- #1. Southwest Airlines: 127,831
--- #2. Allegiant Air: 75,321

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

Canva

- Passengers: 204,824 (20.7% of all passengers)
- Top carriers:
--- #1. American Airlines: 204,824

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