Adverse Weather Conditions

Adverse weather brings delays cancellations effects Thousands of passengers regularly causes delays diversions and cancellations to flights around the world, no matter what the reasons a delayed flight it can hurt an Airline and an Airport, delaying and in some cases cancelling flights.  Delay code 71 or 77

Shopping Spree

One of my personal favourites, in 2012 a boy band had enough stardom to delay a flight travelling from Heathrow (LHR) to LAX for 15 minutes so that they could do some duty-free shopping.

Delay code 16.   


                    Natural Disasters
Volcanic Ash high in the atmosphere puts a massive strain on airline operations involving mass diversions and cancellations. When a Volcano shows signs of a potential eruption, this triggers fears with airline executives that they could be facing another Eyjafjallajökull eruption, in 2010 this eruption forced airlines to avoid huge areas of airspace and lose billions of Euros.  Delay code 77 or 99? 


 
                All creatures Great and Small

Cockroaches, Iguanas, Otters, Crabs and monkeys have all been blamed to have caused the late departure of flights.
In 2011 about one hundred terrapin turtles closed runway 4.  The turtles crossed the tarmac shutting down the runway at New York JFK Airport. Turtles are not the only creatures  Delay code 89.

                                               

Wrong Pajamas
Two passengers caused a 30-minute delay when the crew on their flight from could not provide them with their complementary XL pyjamas. Despite being offered business class pyjamas the passengers refused, insisting on first-class pyjamas. Eventually, they disembarked leaving other passengers in stitches after the pilot gave the reason for the delay.

Delay code 16.

In Europe alone flight delays cost an estimated €100 per minute

Think about this: every single minute of that delay is estimated to cost the European economy about €100. That includes everything from extra fuel burn to compensation for passengers.

Time is money

Source :

https://www.irishtimes.com/news/ireland/irish-news/teams-work-to-keep-cork-airport-runway-set-for-reopening-1.3411953
https://www.independent.ie/business/world/europes-flight-delays-cost-100-a-minute-37934906.html
https://en.wikipedia.org/wiki/IATA_delay_codes