Passengers have been left stranded as easyJet chaos sees 723 flights rescheduled and 32 cancelled across Europe.
The budget airline faced severe disruption due to staffing challenges, heavy demand and airport congestion, according to reports.
The extensive delays and rescheduled flights had a knock-on effect across the airline network.
The fresh wave of disturbance comes as the European aviation network continues to experience an increase in traffic.
Routes impacted in particular include the connections between the United Kingdom and Spain, France, Italy and Greece.
The European Union Aviation Safety Agency (EASA) have previously highlighted the airspace facing capacity challenges during peak travel periods.
As easyJet operated one of Europe's largest short-haul networks, the disruption impacted thousands of passengers.
Routes that were affected, including those connecting London, Paris, Amsterdam, Milan, Lisbon, Barcelona, and Berlin.
Although cancellations remain largely limited, hundreds of delayed flights lead to customers being left stranded at airports.
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According to UK261 and EU261 regulations, travellers may be entitled to assistance, rebooking options, refunds, meals and accomodation support when flights are impacted.
Express.co.uk has contacted easyJet for comment.
Authorities warn customers to check flights before travelling as bury periods and delays are anticipated in coming months.
Flyers should check flight status before leaving for the airport, have travel insurance details readily available, and review passenger rights under regulations.
The chaos comes as further easyJet flights are set to face disturbance next month.
Holidaymakers heading to Portugal are being urged to check their travel plans, as hundreds of flights are at risk of disruption during a planned nationwide strike, including those from the budget airline.
The disruption is expected to affect major airports across Portugal, including Lisbon, Porto and Faro, with Madeira and Ponta Delgada in the Azores also among the locations likely to feel the impact.
Aside from cancellations, the Luton-based carrier is facing growing pressure as geopolitical tensions continue to drive up the cost of aviation fuel, prompting it to raise some ticket prices and warn of a major financial hit.
Shares have crashed since January, leaving the company valued at only £3billion - the smallest of Europe's five biggest airlines.
