148 Cancelled Flights and 471 Delays at Hartsfield-Jackson Atlanta, Disrupting Philadelphia, Phoenix, Tampa, Minneapolis and More Airports as Endeavor, Frontier, Southwest, Alaska and Others Impact Travel in the US: All You Need to Know

Published on December 29, 2025

619 total flight disruptions were recorded today, including 148 cancellations and 471 delays, tied primarily to Hartsfield-Jackson Atlanta International Airport (ATL). Delta was the most affected with 136 cancellations and 243 delays, followed by Endeavor Air (64 delays) and Frontier Airlines (7 cancellations, 55 delays). Other airlines that faced disruptions despite not leading the totals included Southwest Airlines (30 delays), Spirit Airlines (1 cancellation, 14 delays), United Airlines (8 delays), and Alaska Airlines (5 delays).
Among cities and airports, ATL (72 cancellations, 271 delays) was the epicenter, with spillover disruptions affecting Fort Lauderdale–Hollywood International Airport (3 cancellations, 10 delays), LaGuardia Airport (3 cancellations, 3 delays), Orlando International Airport (2 cancellations, 9 delays), Philadelphia International Airport (5 delays), Phoenix Sky Harbor International Airport (1 cancellation, 4 delays), Tampa International Airport (4 delays), and Minneapolis–Saint Paul International Airport (5 delays).

• ATL-led disruptions reached 148 cancellations and 471 delays across the network.
• Delta Air Lines accounted for the largest share with 136 cancellations and 243 delays.
• ATL alone reported 72 cancellations and 271 delays, far exceeding other airports.
• Delay-heavy impacts were observed at MIA, FLL, LGA, MCO, ORD, and DFW.
• International ripple effects were limited to small volumes across select routes.

Airports Affected By Atlanta Flight Disruptions

Hartsfield-Jackson Atlanta International Airport

ATL recorded 72 cancellations and 271 delays, making it the dominant disruption hub today and the source of widespread downstream delays.

Miami International Airport

Operations were impacted by 3 cancellations and 5 delays, reflecting congestion tied to inbound connections.

Fort Lauderdale–Hollywood International Airport

The airport saw 3 cancellations and 10 delays, with delays outpacing cancellations.

LaGuardia Airport

3 cancellations and 3 delays were logged, indicating moderate but noticeable disruption.

Orlando International Airport

With 2 cancellations and 9 delays, Orlando experienced schedule instability, particularly on connecting flights.

Airlines Most Affected by Cancellations and Delays

Delta Air Lines

136 cancellations, 243 delays — the highest totals among all carriers today.

Endeavor Air

64 delays with minimal cancellations, largely reflecting regional feed disruptions.

Frontier Airlines

7 cancellations and 55 delays, indicating significant schedule pressure.

Southwest Airlines

30 delays recorded without cancellations.

Spirit Airlines

1 cancellation and 14 delays, showing a delay-heavy impact.

How Passengers Were Impacted at Major Airports

• Longer wait times at gates and in terminals due to rolling delays
• Increased likelihood of missed connections on ATL-linked itineraries
• Rebooking queues expanding as cancellations accumulated
• Tight turnaround windows causing cascading delays across later departures
• Heightened uncertainty for same-day travel plans

Overview of ATL Flight Cancellations

Flight cancellations at ATL today were driven largely by Delta Air Lines, with additional impacts from Endeavor Air, Frontier Airlines, Spirit Airlines, Southwest Airlines, and American Airlines. The concentration of cancellations at Hartsfield–Jackson Atlanta International Airport resulted in secondary effects at Miami International Airport, Fort Lauderdale–Hollywood International Airport, LaGuardia Airport, and Orlando International Airport, where delays and isolated cancellations emerged throughout the day.
Today’s disruptions at Hartsfield-Jackson Atlanta International Airport underline how quickly operational strain at a major hub can ripple across the broader air travel network. When delays and cancellations concentrate at a primary connecting airport, even flights departing on time elsewhere can be affected through aircraft rotation, crew availability, and congested arrival slots. For travelers, this often translates into longer waits, tighter connection windows, and increased reliance on same-day schedule adjustments. From a wider travel perspective, such disruption-heavy days reinforce the importance of flexible itineraries, real-time flight monitoring, and contingency planning, especially when journeys depend on high-volume hubs like Atlanta.

Image Source: AI

Source: Different airports and FlightAware