US Aviation Market Data Insights

Find below flight data and analysis focused on the US aviation market, with data powered by OAG's Schedules Analyser. The data is updated monthly. Seats are calculated as departing seats (one-way).

• The Top 10 carriers by seats remains unchanged from December 2024.
• American Airlines remains the biggest carrier in the US this month with 21% of the market, 20m seats.
• Delta Air Lines remains second and Southwest is a close third largest, with 19% and 18% share respectively.
• Southwest's capacity has decreased by 8% vs January 2024, a reduction of 1.5m seats.
  
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• United Airlines added the most seats vs January 2024, increasing capacity by 1.025m seats.
• Delta Air Lines added 790,900 seats vs last year.
• Southwest reduced capacity by 1.5m vs last year, whilst Spirit Airlines reduced capacity by 518,900 seats.
  

• The busiest route was Honolulu - Kahului with 284,170 seats, despite a reduction in capacity of 1% vs last year.
• Capacity grew most on the Los Angeles - San Francisco route, increasing by 23% vs January 2024.
• Capacity was reduced by 17% on the Atlanta - Fort Lauderdale route, with 48,105 seats taken out.
• Capacity on the Denver to Las Vegas route also reduced, by 13% vs January 2024, taking it out of the Top 10.
  
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• Almost a million more seats were added nationally in January 2025 when compared with January 2024.
• Georgia, District of Columbia, California, Massachusetts and New York States added more than 100,000 seats vs last January.
• Capacity in the State of Florida was reduced by 343,169 seats, which is a 3% reduction vs last year.