U.S. fliers face worst delays and tarmac waits in a decade

Flight reliability in the United States deteriorated sharply in 2025, with new research showing on-time performance at its weakest point in more than a decade and extended tarmac waits climbing to record levels under current federal rules.

New report shows delays at highest level since 2014

A nationwide review of federal aviation statistics, published in May 2026 by the California Public Interest Research Group Education Fund under the title “The Plane Truth 2026,” concludes that nearly one in four U.S. flights in 2025 was delayed, canceled or diverted. According to published summaries of the findings, the on-time arrival rate fell to its lowest level since 2014, reversing improvements that had been underway after the most disruptive phases of the pandemic years.

Publicly available coverage of the report indicates that U.S. airlines canceled more than 118,000 flights in 2025, while millions of passengers experienced late arrivals that rippled through already crowded schedules. The data draw on the Department of Transportation’s Air Travel Consumer Reports and the Bureau of Transportation Statistics on time performance database, which track delays by cause, airport and carrier.

The analysis characterizes 2025 as one of the worst years for flight reliability in recent memory, even as overall flight volumes remain below some pre pandemic peaks. The trend stands in contrast to federal snapshots of 2024, which showed modest improvements in on-time performance and baggage handling, suggesting that the past year marked a significant step backward for passengers.

Record tarmac holds despite strict federal rules

The same research highlights a sharp rise in lengthy tarmac delays, a type of disruption that federal rules are specifically designed to limit. Airlines reported 708 domestic tarmac delays lasting more than three hours in 2025, according to the report’s review of federal data, along with 77 international delays that exceeded four hours. That domestic total is described as the highest since the Department of Transportation’s modern tarmac delay regulations took effect in 2010.

Under those rules, carriers are required to allow passengers on domestic flights the option to deplane after three hours on the ground, and on international flights after four hours, subject to exemptions related to safety, security and air traffic control requirements. Despite those safeguards, recent Air Travel Consumer Reports show individual cases where aircraft remained on the tarmac between four and six hours, particularly during severe weather or congestion events at major hubs.

Federal data for early 2025, covering January tarmac incidents, list multiple long ground holds on international services departing major U.S. gateways such as New York John F. Kennedy, Washington Dulles and Dallas Fort Worth. Some aircraft bound for overseas destinations recorded tarmac times above five hours before takeoff, underscoring how quickly operational snags or storms can overwhelm airport and airline contingency plans.

Weather, staffing and late aircraft drive cascading delays

Analyses of federal delay statistics published over the past year point to a familiar but increasingly intertwined set of causes behind the deterioration in performance. Weather remains a leading driver, particularly in congested hubs that face frequent thunderstorms or winter storms. However, researchers who study the Bureau of Transportation Statistics database note that the contribution of air traffic control constraints, airport congestion and security related slowdowns has grown more pronounced in the post pandemic period.

Recent academic work using a 15 year sample of U.S. delay data finds that security screening and national aviation system constraints, which include airspace flow programs and ground stops, are now a more visible factor in whether a given flight departs or arrives on time. At the same time, late arriving aircraft have become one of the most common immediate triggers for departure delays, with one disruption in the network often propagating through an entire day’s schedule for a carrier.

Industry and consumer analyses also highlight persistent staffing challenges, especially among air traffic controllers and some airline ground operations teams. Government reports and trade group statements over the past two years describe high overtime levels and efforts to accelerate training pipelines for critical roles. While those measures aim to ease bottlenecks in the medium term, current capacity constraints mean that relatively small shocks, such as localized storms or equipment failures, can still escalate into nationwide waves of missed connections and cancellations.

Airports and airlines show wide performance gaps

Behind the national averages, new rankings of U.S. airports and airlines released in late 2025 and early 2026 reveal stark differences in reliability across the system. Data visualizations based on federal on-time performance records show that some large hubs, including Chicago O Hare, Dallas Fort Worth and Newark, recorded on-time arrival rates in the mid 60 percent range, putting them among the least punctual major airports.

By contrast, several airports in warmer or less storm-prone regions performed significantly better. Recent analyses point to Honolulu, Palm Beach and San Diego as examples of facilities where between roughly 78 percent and 87 percent of flights arrived on time in the latest datasets. Smaller airports with lower traffic volumes but efficient operations, such as certain regional facilities in Texas and the Southeast, also posted comparatively strong results.

Similar disparities are visible among airlines. A 2026 investigation by a Denver based news outlet, citing the “Plane Truth” study, reported that ultra low cost carriers, including Frontier, recorded some of the highest delay rates in 2025. Separate industry dashboards, such as those maintained by independent flight statistics services, show that several network carriers and their regional affiliates maintained on-time arrival rates above 80 percent, illustrating how fleet planning, hub choice and operational buffers can influence performance.

Travelers brace for a difficult summer despite reform efforts

The findings arrive as U.S. air travel enters the peak summer season of 2026, with passenger volumes projected to remain strong. Consumer advocates and travel analysts quoted in recent coverage warn that, absent major changes, travelers should be prepared for continued disruption, including long lines, rolling delays and occasional hours long tarmac waits during severe weather episodes.

At the policy level, federal agencies have launched a series of initiatives aimed at curbing the most extreme problems. Over the past two years, the Federal Aviation Administration has announced funding for radar and tower upgrades at key choke point airports, along with hiring pushes for controllers in congested corridors. The Department of Transportation has also promoted refund and fee transparency tools, encouraging passengers to compare airlines on customer service policies as well as fares.

Consumer groups argue that stricter enforcement of existing tarmac rules and stronger financial incentives for airlines to avoid excessive delays could help prevent the worst outcomes. For now, the latest data suggest that while lengthy ground holds remain relatively rare when measured against the tens of millions of flights each year, they are occurring more often than at any point since current protections were put in place, reinforcing traveler frustration at a system that appears to be struggling to keep pace with demand.