How often does weather delay flights at Leipzig-Halle?
From January 2018 to September 2026, EUROCONTROL recorded arrival restrictions for weather (regulation reason W) at Leipzig-Halle (LEJ) on 284 of 3,195 days (8.9%). The worst month is January: 17% of days and 0.4 minutes of weather delay per arriving flight on average. Calmest: April (5% of days). Weather caused 75% of all arrival-regulation delay minutes at this airport. Source: EUROCONTROL.
Month by month
| Month | Days with weather restrictions | Days with ≥ 1 min per arrival | Minutes per arriving flight |
|---|---|---|---|
| January | 17% | 13% | 0.40 |
| February | 12% | 9% | 0.28 |
| March | 6% | 6% | 0.31 |
| April | 5% | 3% | 0.11 |
| May | 6% | 6% | 0.24 |
| June | 8% | 6% | 0.33 |
| July | 9% | 8% | 0.24 |
| August | 6% | 4% | 0.28 |
| September | 6% | 5% | 0.14 |
| October | 10% | 8% | 0.30 |
| November | 12% | 10% | 0.39 |
| December | 10% | 6% | 0.24 |
Share of days on which EUROCONTROL's network manager limited arrivals because of weather at or around the airport (regulation reason W), 2018–2026. Minutes per arriving flight = weather-regulation delay ÷ all arrivals that month. Worst weeks of the year: week 5 (22%), week 48 (21%), week 3 (21%).
Year by year
| Year | Days with weather restrictions | Minutes per arriving flight | Arrivals |
|---|---|---|---|
| 2018 | 28 of 365 | 0.32 | 37,420 |
| 2019 | 42 of 365 | 0.32 | 37,723 |
| 2020 | 18 of 366 | 0.14 | 30,881 |
| 2021 | 33 of 365 | 0.19 | 36,970 |
| 2022 | 30 of 365 | 0.19 | 39,147 |
| 2023 | 61 of 365 | 0.60 | 38,773 |
| 2024 | 30 of 366 | 0.21 | 36,511 |
| 2025 | 18 of 365 | 0.15 | 35,404 |
| 2026 (Jan–Sep) | 24 of 273 | 0.27 | 25,985 |
2020–2021: far fewer flights during the pandemic.
Weather among all causes
| Cause of arrival regulation | Share of delay minutes |
|---|---|
| Weather | 75% |
| Special event | 15% |
| Aerodrome capacity | 5% |
| Atc equipment | 2% |
| Air traffic control capacity | 2% |
Causes with at least 2% of all arrival-regulation delay minutes, 2018–2026.
What the weather was like on those days
| In the airport's weather reports (METAR, 05–21 UTC) | Days with weather restrictions | Other days | Ratio |
|---|---|---|---|
| Thunderstorm reported | 14% | 3.9% | 3.5× |
| Fog or visibility under 800 m | 14% | 3.6% | 4.0× |
| Cloud base at or below 200 ft | 11% | 3.9% | 2.7× |
| Gusts of 30 knots or more | 28% | 6.0% | 4.7× |
| Crosswind of 20 knots or more on the best runway | 7.7% | 0.8% | — |
| Snow | 16% | 5.7% | 2.8× |
| Freezing rain or drizzle | 2.8% | 0.6% | — |
On 38% of the restriction days none of these showed up in the airport's own reports: restrictions are also set on forecasts, for weather on the approach or elsewhere in the area, and when the wind direction forces a less efficient runway layout. The weather is what came with the delays, not proof of their cause. Based on 3,195 days with full METAR coverage.
The heaviest days
| Date and reported weather | Weather delay, minutes | Arrivals | Minutes per arrival |
|---|---|---|---|
| 14 August 2023 Thunderstorm reported | 3,337 | 89 | 37.5 |
| 16 March 2018 Fog or visibility under 800 m; Snow | 2,133 | 111 | 19.2 |
| 22 June 2023 Thunderstorm reported; Gusts of 30 knots or more; Crosswind of 20 knots or more on the best runway (gusts to 34 kt) | 1,856 | 106 | 17.5 |
| 18 June 2024 Thunderstorm reported | 1,688 | 134 | 12.6 |
| 6 March 2018 Fog or visibility under 800 m; Cloud base at or below 200 ft; Snow | 1,541 | 107 | 14.4 |
What these numbers cover
- Only delays from air traffic flow management (ATFM) regulations on arrivals are counted — not all delays, not departures, and not cancellations or diversions. A day with restrictions does not mean every flight was late.
- Airport ICAO code EDDP, IATA LEJ. Ranking by share of restriction days: 20 of 94 airports on this site.