Dreaming of a stress-free escape to the Mediterranean this summer? You may want to check your destination first.A new study has revealed the European holiday hotspots where travellers are most likely to face lengthy flight delays, with some airports seeing more than one in 10 services delayed by over an hour.Popular destinations in Spain, Greece and Italy dominate the list, raising the prospect of frustrating waits before many holidaymakers have even reached the beach.Palma de Mallorca, Ibiza and Alicante all made the top 20, as well as Kefalonia, Corfu and Rhodes.Read on to discover the European holiday spots most likely to be hit with delays this summer. 1. Milan Bergamo, Italy Milan Bergamo International Airport proved to be the worst for delays to/from the UK last summerOffering flights to over 100 destinations, Milan Bergamo Airport is one of Italy's largest hubs. Just last summer, it served 4.8 million passengers between June and August.However, AirAdvisor ranked it the worst airport for delays. It saw 11.96 per cent of its flights to/from the UK between June and September 2025 delayed by over 60 minutes. Back in January, flights were severely disrupted due to a technical fault, as well as foggy weather conditions. International Airport Review reported that 26 departing flights were cancelled, six were diverted and seven rescheduled. Meanwhile, RAI News reportedly claimed 63 incoming flights were either delayed, cancelled or diverted. Some 40 departures between the Saturday evening and Sunday morning were cancelled or rescheduled. The airport has been particularly impacted by the new Entry/Exit System. Although an incident in April was caused by delays at the border rather than issues with the flight itself, British airline passengers were left behind after their plane departed without them.A Ryanair flight from Milan Bergamo to Manchester took off on April 16 without a number of its passengers on board as a result of EES issues holding things up.At the time, Ryanair said: 'Due to passport control delays at Milan Bergamo Airport on 16 April, a number of passengers missed this flight from Milan to Manchester.'Should these passengers have presented at the boarding gate desk before it closed, they would have boarded this flight.' Adam Hassanjee, 18, from Bolton - who was one of the stranded passengers - told the BBC: 'We were waiting for an hour and a half and weren't moving.'Then we see the plane leave and got told we have to go and book our own flight back.'2. Nice Cote d'Azur, France Nice Cote d'Azur Airport saw 11.92 per cent of its flights to/from the UK delayed last summer by over 60 minutesWith 11.92 per cent of its flights to/from the UK delayed last summer by over 60 minutes, Nice Cote d'Azur Airport ranks second. The hub was part of an operational breakdown on June 19 involving both Charles de Gaulle Airport and Nice Côte d'Azur.A total of 316 flights were disrupted at the two airports and there were more than 300 delays, according to Air Help.KLM experienced one cancelled flight and reported five delays at Nice Côte d'Azur Airport.EasyJet also cancelled one flight but were hit with 53 flights delayed. 3. Kefalonia, Greece Kefalonia Airport places third overall with 11.79 per cent of its flights were delayed by 60+ minutesGreece makes the top three delayed airports with Kefalonia International, a hub situated on the largest Ionian island.The dreamy spot attracts over 700,000 visitors a year, but last summer 11.79 per cent of its flights were delayed by 60+ minutes. Anton Radchenko, CEO of AirAdvisor, offers possible reasoning for the frequent late flights seen at some of the Greek airports to make the list.He said: 'Our research found that Greece is by some distance the most disruption-prone country for UK air passengers. 'Seven of the twenty most disrupted destinations for holidays from the UK to Europe are Greek islands, which might not come as a surprise to frequent travellers to these airports.'They tend to be much smaller than hubs in major metropolitan centres and are incredibly popular with holidaymakers from across the world. During the summer period, they frequently operate at maximum capacity, so that means that when a mass disruption event occurs, there are implications for other services.'4. Pisa, Italy Pisa International Airport places fourth with 10.58 per cent of its flights over 60 minutes delayed last summerPisa International Airport sees millions of passengers travel through the hub each year.However, it does seem to struggle with the masses of tourists, with 10.58 per cent of its flights over 60 minutes delayed last summer. Aside from flight hold-ups, Pisa has also been particularly impacted by the EES, with Ryanair highlighting it as one of the Italian hubs hit with long border queues in its letter to the government. 5. Corfu, Greece Corfu Airport ranks fifth with 9.54 per cent of its flights to/from the UK delayed more than 60 minutesAnother Greek hub, Corfu Airport, takes fifth place with 9.54 per cent of its flights to/from the UK delayed more than 60 minutes.The hub is relatively small and only has one terminal building, but it is the fifth busiest airport in Greece and handles nearly 3 million passengers each year. One traveller on Reddit recalled their experience from a few years ago and penned, 'The flight was very smooth, I came in from London. It all went well the only problem on the way back was that all flights were delayed and I missed my connection but other than that, everything was pretty good. And I do not enjoy flying.'6. Palma de Mallorca, Spain Palma de Mallorca Airport places sixth with 9.33 per cent of flights delayedBringing Spain into the top 10 is Palma de Mallorca Airport, Spain's third largest hub. Some 9.33 per cent of flights were delayed by over 60 minutes last summer and AirAdvisor found Palma's delay rate doubled from 3.66 per cent to 7.6 per cent over a year, according to Majorca Daily Bulletin.Recent delays on June 9 were caused by wind, Air Help reports, leading to 364 flights setting off late.Anton says, like Greece, the sheer volume of flights between popular Spanish holiday hubs in Palma and Reus can result in full days of travel chaos when multiple services are delayed.'When delays start to build up at an airport, a domino effect can occur, causing flights across a single day being pushed back, leading to higher rates of delays, particularly at peak periods.'7. Reus, Spain Another Spanish hub, Reus Airport, makes the top 10 and places seventh with 9.13 per cent of its flights delayed by over 60 minutes.The small airport handled 1.3 million passengers in 2025 and served 43 different routes. 8. Ponta Delgada, Portugal Ponta Delgada Airport ranks eighth for delaysPortuguese airport Ponta Delgada is named as the eighth hub most likely to be delayed this summer. Between June and September 2025, 9.08 per cent of its flights to/from the UK were late. The hub is conveniently located for the Azores, an archipelago of nine volcanic islands, and can be found on São Miguel island.It handles millions of passengers each year and in May, experienced 27 flight delays and three cancellations, Travel and Tour World reports. 9. Olbia, SardiniaSardinia enters the top 10 with Olbia Costa Smeralda Airport, located just 4km from the city centre. It handles millions of passengers each year but last summer, 8.71 per cent of its flights to/from the UK were delayed. Recent delays seem to be caused by staff shortages, operational issues and busy summer timetables, according to The Traveler. 10. Zadar, CroatiaZadar Airport saw 1.6 million passengers in 2025 and covered over 70 different destinations. However, it rounds off the top ten and between June and September 2025, 8.65 per cent of its flights to/from the UK were delayed. The top 20 European airports with delays to/from the UK over 60 minutes 1. Milan Bergamo, Italy - 11.96% 2. Nice Cote d’Azur, France - 11.92%3. Kefalonia, Greece - 11.79%4. Pisa, Italy - 10.58%5. Corfu, Greece - 9.54%6. Palma de Mallorca, Spain - 9.33%7. Reus, Spain - 9.13%8. Ponta Delgada, Portugal (Azores) - 9.08%9. Olbia, Sardinia - 8.71%10. Zadar, Croatia - 8.65%11. Zakynthos, Greece - 8.48%12. Naples, Italy - 8.40%13. Chania, Greece - 8.33%14. Paphos, Cyprus - 7.87%15. Kos, Greece - 7.72%16. Rhodes, Greece - 7.68%17. Ibiza, Spain - 7.48%18. Alicante, Spain - 7.27%19. Mykonos, Greece - 6.95%20. Porto, Portugal - 6.88%