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“The methodology of the Airline ImPax Report is sound and the data comprehensive. Delays are organised using logical segmentation, which humanises the scope of the disruption data, making it highly useful and actionable for the aviation industry.”

Henry Harteveldt, President, Atmosphere Research Group

Latest: July 2025

This month’s report analyses the disruption data of 293 airlines totalling 878,370 disrupted flights, across 3,198,781 planned flights, globally.

In July 2025, global aviation was severely disrupted across all regions. Europe faced a crippling French ATC strike and a UK radar failure, grounding thousands of flights. In the U.S., storms, IT failures, and extreme turbulence caused mass delays and injuries. Asia-Pacific contended with typhoons and monsoon-related disruptions, notably in Hong Kong. While Latin America saw no major crises, capacity constraints stressed operations. The Middle East & Africa were hit hardest by conflict-driven airspace closures. Disruptions rose 17.5% globally—far outpacing the 6.5% increase in flight volumes—with cancellations up over 20%, making July one of aviation’s most chaotic months on record.

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2024 Year in Review

What the 2024 Data Reveals About Passenger Experience and Airline Performance

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July 2025
In July 2025, global aviation was severely disrupted across all regions. Europe faced a crippling French ATC strike and a UK radar failure, grounding thousands of flights. In the U.S., storms, IT failures, and extreme turbulence caused mass delays and injuries. Asia-Pacific contended with typhoons and monsoon-related disruptions, notably in Hong Kong. While Latin America saw no major crises, capacity constraints stressed operations. The Middle East & Africa were hit hardest by conflict-driven airspace closures. Disruptions rose 17.5% globally—far outpacing the 6.5% increase in flight volumes—with cancellations up over 20%, making July one of aviation’s most chaotic months on record.
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June 2025
In June 2025, global air travel was severely impacted by geopolitical tensions, weather events, and operational failures. Middle East airspace closures disrupted APAC, ME&A, Europe, and North America, forcing thousands of reroutes. Storms hit major hubs in the U.S., Europe, and Latin America, while ATC and tech issues further strained networks. Disruptions rose sharply—up to 20% in some regions—despite modest changes in flight volumes, affecting millions of passengers worldwide.
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May 2025
May 2025 was an eventful month for the aviation industry, marked by a series of disruptions across key global regions. Europe continued to grapple with strikes at major hubs, while in the U.S., power outages and a shortage of maintenance crews grounded over 4,000 flights across two Tier 1 carriers. In APAC, severe weather and infrastructure issues led to further delays, and in the Middle East, ongoing security concerns prompted major airlines to suspend select routes.
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April 2025
April 2025 saw a number of high profile aviation disruptions including the major Iberian outage that grounded 500 flights, turmoil in Newark that cancelled several hundred flights and has triggered plans to update systems over the coming years, and escalating tensions between India and Pakistan that has seen almost 30 airports pausing operations. Flight volumes have remained steady month-on-month, with a +15% in overall disrupted passengers.
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March 2025
Despite disruptive events that included a major fire in Heathrow impacting 200,000 passengers, ATC strikes in central Europe, and adverse weather systems in North America and the broader APAC region, flight cancellation percentages remained steady overall (MoM) but the impact skewed toward Tier 1 carriers with higher flight volumes. Therefore passengers affected by cancellations increased by almost 10% (+270K) globally.
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February 2025
Although February saw aviation labour strikes in Europe, layoffs in North America, and terrifying occurrences that included the flipping of a Delta flight upon landing, there was a 19% decrease in passengers impacted by medium and major delays, and cancellations.
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January 2025
January is a big month as it is a hangover of northern hemisphere holiday travel, southern hemisphere seasonal travel, and it leads into Chinese New Year. While flight volumes and disrupted flights remained steady (MoM). There was a 38% increase in passengers impacted by a cancelled flight. Let’s dig into the data!
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December 2024
December – and the holiday season – saw a 6% increase in overall flight volumes and a 19% increase in disrupted flights worldwide. This resulted in 100K more passengers that experienced a cancelled flight compared to November.
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November 2024
November saw a decrease in overall flight volumes by 12% and a 13% decrease in disrupted flights, but only a 7% drop in disrupted passengers compared to last month. Let’s dig into the data!
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October 2024
October – which included some notable storms – saw an increase in overall flight volumes by 3% but a decrease in disruptions by approx. 12% decrease in disrupted flights, with a >20% decrease in disrupted passengers compared to last month.
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September 2024
As Summer, peak-season comes to a close, September saw a decrease in overall flight volumes by 8% resulting in a >25% decrease in disrupted flights, and approx. 15m less disrupted passengers compared to last month.
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August 2024
While flight volumes sustained (+3m) month-on-month, there were an estimated 13 million less passengers disrupted by medium/major delays and cancellations worldwide. Let’s dig into the data!
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July 2024
Due to a global outage caused by a routine update thousands of flights were grounded resulting in a 19% increase in disruptions month-on-month. Let’s dig into the data!
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June 2024
Disruptions increase by >10% with ATC and pilot strikes beginning to impact Europe specifically. Check out the full report!
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May 2024
As North America and Europe prepare for summer both flight volumes and disruptions continue to climb. Check out the full report!
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April 2024
Flight volumes remain steady month-on-month, but disruptions begin to climb as the Southern Hemisphere heads into winter. Check out the full report!
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March 2024
Disruption numbers remain steady while flight volumes increase across every region. Check out the full report!
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February 2024
A dip in flight volumes for February sees every market decrease their disruption numbers. Check out the full report!
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January 2024
Peak holiday travel is coming to a close in the Northern Hemisphere but disruptive weather systems persist. High volume summer travel continues in the Southern Hemisphere. Check out the full report!
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