Data Snapshot #59 - First wave flights show improved year-on-year all-causes departure delays

EUROCONTROL Data Snapshot shows that reducing delays in first wave flights improves overall network performance, with all-cause departure delays in first wave flights decreasing by 0.9 minutes per flight in 2025 compared to 2024.

Read the article Published May 12, 2026

One-off publication Latest release May 12, 2026

Illustration for Data Snapshot #59 - First wave flights show improved year-on-year all-causes departure delays

Data and Resources

API

delay_cause

API name: data-snapshot-59--delay-cause

First 5 rows · Download all rows: CSV · TSV · JSON · XML

Code examples

curl

curl 'https://polaris.goens.dev/api/3/action/datastore_search?resource_id=data-snapshot-59--delay-cause&limit=5'

Python

import pandas as pd

df = pd.read_csv('https://polaris.goens.dev/datastore/dump/data-snapshot-59--delay-cause?format=csv')

R

df <- read.csv('https://polaris.goens.dev/datastore/dump/data-snapshot-59--delay-cause?format=csv')

hourly_evolution

API name: data-snapshot-59--hourly-evolution

First 5 rows · Download all rows: CSV · TSV · JSON · XML

Code examples

curl

curl 'https://polaris.goens.dev/api/3/action/datastore_search?resource_id=data-snapshot-59--hourly-evolution&limit=5'

Python

import pandas as pd

df = pd.read_csv('https://polaris.goens.dev/datastore/dump/data-snapshot-59--hourly-evolution?format=csv')

R

df <- read.csv('https://polaris.goens.dev/datastore/dump/data-snapshot-59--hourly-evolution?format=csv')

API documentation and rate limits

Cite this data

Source: EUROCONTROL Aviation Intelligence Unit. Data Snapshot #59 - First wave flights show improved year-on-year all-causes departure delays. https://polaris.goens.dev/dataset/data-snapshot-59

May be copied in whole or in part, provided that EUROCONTROL is mentioned as the source and it is not used for commercial purposes. Full disclaimer

Data sources

Contact
aviation.intelligence@eurocontrol.int

The table view shows where each column comes from, under Data Dictionary.

Notes from the source

  • © European Organisation for the Safety of Air Navigation (EUROCONTROL) 2026

Additional Info

Field Value
Update frequency One-off
Time resolution
Data from
Data to
Data description https://www.eurocontrol.int/publication/eurocontrol-data-snapshot-59-better-first-wave-performance
Methodology
Source page https://ansperformance.eu/publications/ectl/datasnap/