Europe just had its busiest summer in the air ever. Between July and August 2026, an average of 35,959 flights crossed the continent each day, up 2.4% on 2025, according to Eurocontrol. The single busiest day came early: Friday 10 July, when 37,640 flights took to the skies. And despite all that volume, punctuality actually improved — 72.6% of flights landed on time, a 1.2 percentage-point gain on last year.
The backdrop is complicated. The US-Iran war disrupted parts of the 2026 season, but it also reshaped where Europeans chose to go. With the Middle East widely seen as off-limits, holidaymakers stayed closer to home — and that traffic shift shows up clearly in the numbers.
The winners? The Balkans and the eastern Mediterranean. Albania, Croatia, Cyprus, Greece, Montenegro, North Macedonia, Serbia and Slovenia all saw a high increase in flights, with continuous growth across southwest Europe. Fourteen countries logged their highest-ever daily traffic this summer, among them Greece, Italy, Spain, Portugal, Ireland, Slovakia, Moldova, Armenia and Georgia.
Greece in particular was stretched to breaking point. Record passenger numbers pushed its air traffic control system to the limit during the peak weeks, a sign of just how concentrated the demand became. Airlines felt the same squeeze: Ryanair, easyJet, Jet2.com, Wizz Air, Aegean, Air Serbia, Turkish Airlines, Pegasus, SunExpress, Sky Express and Royal Air Maroc all reported record traffic.
Not everyone shared the boom. Bulgaria, Hungary and Türkiye saw traffic dip — Türkiye's decline is notable given how heavily it has leaned on Middle East and wider Eastern routes in recent years. And France retained an unwanted title: it single-handedly accounted for 32% of all air traffic control-related delays in Europe, far more than any other country.
Why does this matter if you're planning a trip? First, the Balkans are firmly on the map now — expect fuller flights and pricier July and August fares to places like Tirana, Podgorica and Skopje that used to be bargains. Shoulder season (May-June, September) is looking smarter every year. Second, if you're connecting through France, build in buffer time; the ATC delay problem isn't going anywhere. Third, with Greece at capacity in peak season, booking flights and island ferries early matters more than it used to.
The bigger picture for travellers is that Europe's aviation system is running hot. Record demand, strained airspace in the most popular corners, and one country causing a third of all ATC delays — that's an environment where flexibility pays. Early morning flights, alternative airports and refundable fares are your friends for summer 2027.