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Cologne Bonn flight delays: the record, day by day

Eurocontrol attributes air-traffic delay to Cologne Bonn on the days it happens, with the cause. On its 25 worst days since 2019 the airport lost 30,948 minutes of arrival delay, mostly to weather and aerodrome capacity. Days with nothing logged are a strong point for any passenger whose flight was late for another reason.

Was your Cologne Bonn flight 3 hours late?

The day the flight was due to leave, in local time where it left. For an overnight flight, that is the evening you set off.

Same flight number twice that day? Add the departure code

Free. No account. The airline is not contacted.

Worst days on record

DateDelay minLateCause
23 October 20252,34749Weather
4 August 20222,30447Weather
30 January 20192,09631Weather
6 September 20222,00539Weather
13 August 20211,57036Equipment (non-ATC)
21 February 20231,52734Weather
3 August 20261,30720Weather
16 December 20221,30730Weather
8 September 20221,24631Weather
19 May 20221,19129Aerodrome capacity
30 May 20221,05331Equipment (non-ATC)
10 July 20241,05019Aerodrome capacity
31 January 20191,04317Weather
13 September 20241,01328Equipment (non-ATC)
25 July 20221,00028Aerodrome capacity

Most recent days with delay logged

DateDelay minLateCause
30 September 20262244Aerodrome capacity
29 September 20262252Aerodrome capacity
28 September 2026813Aerodrome capacity
24 September 20262451Aerodrome capacity
23 September 202645611Aerodrome capacity
22 September 20263508Aerodrome capacity
17 September 20262192Aerodrome capacity
16 September 202649616Aerodrome capacity
15 September 20261681Aerodrome capacity
14 September 20261873Aerodrome capacity
9 September 202637712Aerodrome capacity
8 September 20262697Aerodrome capacity
7 September 202637912Aerodrome capacity
3 September 202641511Aerodrome capacity
2 September 202651212Aerodrome capacity

Data to 30 September 2026. Eurocontrol publishes about a month in arrears.

What usually goes wrong at Cologne Bonn

Weather50%
Aerodrome capacity39%
Equipment (non-ATC)10%
Other2%

Share of logged delay minutes across the worst and most recent days shown above. Weather, ATC staffing, ATC capacity and equipment failures are the causes airlines most often plead as extraordinary; airport capacity and unspecified delay are arguable.

Questions

Is a delay at Cologne Bonn caused by weather always an extraordinary circumstance?

No. The airline must show that the weather actually affected your flight and that it took all reasonable measures. Eurocontrol logs weather delay at Cologne Bonn on specific days; if your day is not one of them, the weather defence has nothing behind it. If it is, the airline still has to connect it to your flight.

How do I find out if my Cologne Bonn flight was delayed 3 hours?

Enter the flight number and date in the checker above. It pulls the recorded arrival time, works out the delay against the schedule, and shows what Eurocontrol and the airport weather logged for Cologne Bonn that day.

Which airlines' passengers can claim after a Cologne Bonn delay?

Any airline departing Cologne Bonn is covered by EU261 regardless of nationality. Arrivals are covered when the airline is a UK or EU carrier.

Source: Eurocontrol Performance Review Unit, airport arrival ATFM delay by cause, daily. See also your rights and the compensation calculator.