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United Airlines

Essential performance statistics

 Discover how United Airlines performed in 2025 with key metrics such as capacity, frequency, ASKs and busiest routes. 

 

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Main Hub: Chicago O'Hare (ORD)
Country / Territory: United States of America
Alliance: Star Alliance

 

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Capacity

225,559,746

⬆ 5.9% YoY
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Frequency

1,736,460

⬆ 7.3% YoY
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ASKs

536,482,937,360

⬆ 6.8% YoY

 

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Routes

3,016

⬆1.3% YoY

United Airlines: 2025 in stats

  • United Airlines ranks #1 globally in Available Seat Kilometres (ASKs). The airline allocated 10.5% of its capacity outside North America, ahead of its US competitors.
  • The airline allocated 10.5% of its capacity outside North America, ahead of its US competitors.
  • Denver (DEN) remains the largest base for United Airlines at 24.1m seats which is 49% of the airport's capacity, followed closely by Chicago O'Hare (ORD) where the airline operated 24.0 million seats in 2025, 47% of the airport's capacity.
  • The airline currently has an order for 198 widebody aircraft on the books, which is far higher than American Airlines which has ordered 19 widebody aircraft, and Delta Air Lines which has ordered 54.

 

United Airlines: Capacity by type

United_Airlines_donut_logoBig

 

United Airlines: Capacity by region 

Looking for United Airlines' on-time performance?

United Airlines: Top five country markets

United Airlines: Top 5 busiest airports

 

Top 5 busiest international routes

  • EWR-LHR

  • CUN-IAH
  • IAH-MEX
  • LHR-SFO
  • HKG-SFO

Top 5 busiest domestic routes 

  • EWR-LHR

  • CUN-IAH
  • IAH-MEX
  • LHR-SFO
  • HKG-SFO

United Airlines: Aircraft fleet composition

 


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