Ryanair secured the negative “first place” for the airline with the highest percentage of delayed flights, according to data from the Flighty flight monitoring platform, while the list includes both low-cost airlines and large, traditional carriers. The findings on the lost time and money that delays cost passengers and airlines are even more disheartening.
After analyzing data from over 22 million flights worldwide, Flighty found that 29% of flights from the Irish airline were delayed this year.
The percentages of delayed flights were the same for easyJet (No.2) and Air France (No.3), but because Ryanair is a larger airline in terms of passenger volume, it was responsible for more hours of delays.
The fourth airline with the most delays was the American Frontier, with 28% of its flights delayed, followed by Lufthansa in fifth place (26%) and Qantas in sixth (26%).
The top ten is rounded out by KLM (7th place/25%), Air Canada (8th place/25%), JetBlue (9th place/25%), and Southwest Airlines (10th place/25%).
According to Flighty’s findings, the fourth and fifth airlines with the most delays in the US were American Airlines (24%) and Alaska Airlines (23%).
Damaged passengers and airlines
In its report, the platform also examined the interval between a flight’s scheduled arrival and the moment passengers disembarked from the plane, revealing how long they waited for the aircraft to reach the gate after arriving in the airspace above the airport or after landing.
According to Flighty, delays, crew delays, congestion on taxiways, queues on landing strips, and weather conditions extended the travel time of 30% of all flights. According to Flighty, this corresponds to a total waiting time of 1.4 million hours or 161 years.
“[This index] records all the extra minutes we spend sitting, waiting, and grumbling, ‘Get me out of this plane,'” the popular platform said in a statement.
Delayed flights cost not only time but also have an economic impact, the research showed. According to the International Air Transport Association and Eurocontrol, air traffic control delays alone cost passengers and airlines in Europe approximately $6.8 billion from the end of 2024 to October 2025.
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