Source data

EUROCONTROL estimates of the fraction of expected flights cancelled

Sources checked 11 November 2026

Switch between opening day, peak day and the full periodHow the disruption varied across airspace and dates

15 April

Shared scale · 0% to 100%

Finland39%
Ireland54%
United Kingdom74%
Denmark60%
Sweden54%
Germany20%
France20%
Greece11%
Serbia and Montenegro airspace18%
EUROCONTROL reference area ESRA0828%

Selected regions and the reference area are charted. The table includes every area in Figure 8.

Source 1 Source 2 Source 3

EUROCONTROL estimates of the fraction of expected flights cancelled

The original figure uses airspace reporting areas and separates Iceland. A missing flight in a particular area can include an overflight rerouted around the ash.

										Source
Albania	17	43	68	77	31	14	0	0	34	Source 1
Austria	15	61	98	99	76	53	21	0	52	Source 1
Belarus	0	63	86	83	61	23	14	0	42	Source 1
Belgium and Luxembourg airspace	39	96	98	98	97	72	25	0	65	Source 1
Bosnia and Herzegovina	18	33	91	97	67	31	0	0	43	Source 1
Bulgaria	21	61	88	96	68	38	0	0	47	Source 1
Canary Islands	25	34	55	45	23	1	0	0	25	Source 1
Croatia	20	40	92	95	68	39	0	0	45	Source 1
Cyprus	9	29	46	44	28	11	0	0	21	Source 1
Czech Republic	12	87	98	98	89	66	28	6	60	Source 1
Denmark	60	87	99	99	97	91	40	16	72	Source 1
Estonia	24	95	97	99	96	83	46	19	68	Source 1
North Macedonia, listed as FYROM in the report	16	49	86	91	69	30	6	0	45	Source 1
Finland	39	90	98	100	93	96	82	64	81	Source 1
France	20	67	87	92	77	54	16	0	51	Source 1
Germany	20	84	98	99	96	81	40	2	64	Source 1
Greece	11	32	47	42	12	0	0	0	19	Source 1
Hungary	15	66	98	98	79	54	16	3	53	Source 1
Ireland	54	94	98	100	100	90	48	8	74	Source 1
Italy	9	30	74	77	59	26	6	0	35	Source 1
Latvia	23	95	97	98	93	75	36	7	65	Source 1
Lisbon flight information region	25	40	56	46	32	0	0	0	26	Source 1
Lithuania	8	87	90	91	81	61	25	0	55	Source 1
Malta	11	32	39	28	13	0	0	0	16	Source 1
Moldova	17	50	95	92	80	43	17	14	51	Source 1
Netherlands	53	96	98	99	98	75	33	1	68	Source 1
Norway	92	73	92	77	44	50	15	34	57	Source 1
Poland	10	88	97	95	89	76	31	2	60	Source 1
Romania	12	52	94	97	81	42	12	1	48	Source 1
Santa Maria flight information region	0	0	0	0	0	0	0	0	0	Source 1
Serbia and Montenegro airspace	18	48	92	97	68	39	0	0	47	Source 1
Slovakia	17	77	98	97	78	48	13	0	53	Source 1
Slovenia	20	55	97	99	70	51	9	0	50	Source 1
Spain, excluding separately listed Canary Islands	18	39	59	66	37	16	0	0	30	Source 1
Sweden	54	84	99	99	83	80	57	32	71	Source 1
Switzerland	13	64	98	98	94	61	23	2	56	Source 1
Türkiye	13	39	51	50	31	23	0	0	26	Source 1
Ukraine	7	38	80	81	48	25	13	4	38	Source 1
United Kingdom	74	95	99	99	99	93	38	6	74	Source 1
EU27 as reported in 2010	27	62	80	83	72	56	25	5	50	Source 1
EUROCONTROL reference area ESRA08	28	60	77	80	68	53	23	6	48	Source 1

EUROCONTROL estimates of the fraction of expected flights cancelled

15 April

18 April

15 to 22 April

EUROCONTROL estimates of the fraction of expected flights cancelled

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