Appleton International Airport Statistics

Appleton International Airport (ATW) serves as Wisconsin's third-busiest airport and the primary air gateway for the Fox Cities region of northeast Wisconsin. It connects Appleton, Green Bay, and the surrounding communities to destinations across the United States through multiple partner airlines.

Appleton International Airport handles over 1 million passengers annually.

• In 2025, the airport served 1.27 million passengers, a 16.5% increase from 2024¹.
• In 2022, passenger volume was around 846,840, rising to 967,687 in 2023².
• In 2024, the airport served 1.09 million passengers, marking the first time ATW exceeded 1 million annual passengers.

ATW is dominated by low-cost carriers and regional airlines, with Allegiant Air holding the largest shares of passenger traffic.

• In 2025, Allegiant accounted for 38.1% of annual passenger volume, about 482,885 passengers.
• Delta followed with 27.1%, or 343,720 passengers.
• United handled 17.6% (around 223,464) and American 16.9% (about 214,146).
• Charter airlines served 0.3% (roughly 3,419 passengers).

• Chicago, IL was the busiest route in 2025, with 140,420 passengers.
• Minneapolis, MN ranked second with 67,490 passengers.
• Detroit, MI followed with 64,370 passengers.
• Phoenix, AZ served 41,940 passengers, and Sanford, FL had 41,900 passengers, rounding out the top five.

Flight cancellations at ATW remain relatively low, typically under 2% annually.

• In 2025, 1.22% of domestic flights were cancelled, marking an improvement from the 1.84% rate observed in 2024.
• The highest rate occurred in 2020 at 6.03%, due to widespread disruptions and winter weather.
• Cancellations dropped to 1.25% in 2021, then rose slightly to 1.9% in 2022.
• By 2023, the rate improved to 1.06%.

• Winter weather, especially from December through March, causes delays due to snow and de-icing.
• Summer thunderstorms impact schedules both at ATW and at major hubs like Chicago, Minneapolis and Detroit.
• Airline staffing shortages, especially among regional carriers like American and United, lead to schedule changes.
• Air traffic control delays at large Midwest airports can affect ATW arrivals and departures.
• Mechanical issues, while less frequent, occasionally contribute to delays.