**Updated January 2026 **

Which are the busiest airports in the US?  Capacity data for the entire year of 2025 reveals that in terms of scheduled seats, one airport still reigns supreme.

What are The Busiest Airports in the USA?

1st: Atlanta Hartsfield-Jackson (ATL) | 63,100,437 seats
2nd: Dallas/Fort Worth (DFW) | 51,215,128 seats
3rd: Chicago O'Hare (ORD) | 50,568,521 seats
4th: Denver (DEN) | 49,485,982 seats
5th: Los Angeles (LAX) | 45,082,586 seats
6th: New York JFK (JFK) | 38,572,589 seats
7th: Orlando (MCO) | 34,805,618 seats
8th: Las Vegas Harry Reid (LAS) | 34,348,589 seats
9th: Charlotte Douglas (CLT) | 32,879,001 seats
10th: Miami (MIA) | 32,806,479 seats

In 2025, Atlanta Hartsfield-Jackson (ATL) was the busiest airport in the US with 63.1 million seats. It sits around twelve million seats ahead of the airport in second place,

Dallas Fort Worth is second placed with  51.2 million seats.

The third busiest airport for scheduled airline capacity is Chicago O'Hare (ORD) with 50.6 million seats. Seat capacity here is up 8% compared to 2024.

In our annual round-up of the world’s busiest airports based on international + domestic capacity,  Atlanta airport takes first place, though Dubai International (DXB) is catching up, with 62.4M seats scheduled in 2025. DFW and ORD are sixth and tenth busiest in the world, while Denver (DEN) comes in tenth. In contrast, no US airport makes it into the top ten busiest international airports list, highlighting the importance of the domestic market for US airports.

Each month we highlight the busiest airports, airlines, flight routes and states in the US in terms of airline capacity. We’ll let you know when new data is added to our US Aviation Market Dashboard if you subscribe (below) to our weekly digest of aviation insights, analysis, and global capacity updates.

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