Flight delays, measured
What percentage of flights are delayed?
Between August 29, 2026 and September 27, 2026, 19.8% of the flights that landed at the 155 airports Gaduin covers arrived more than 15 minutes late, and 1.4% of flights were cancelled.
Recomputed daily from Gaduin’s own arrival records over a rolling 30-day window.
Updated daily · last computed September 30, 2026
The baseline
Late: 19.8%. 204,325 of 1,029,816 flights that arrived landed more than 15 minutes after their scheduled arrival.
Cancelled: 1.4%. 14,627 of 1,044,443 flights with a known outcome were cancelled.
When a departure is running more than 60 minutes late
0.4% of flights whose departure was running more than 60 minutes late ended up cancelled.
Based on 80 of 21,040 flights, August 29, 2026 to September 27, 2026.
Can a late departure still arrive on time?
63.2% of flights that departed more than 15 minutes late still arrived no more than 15 minutes after their scheduled arrival.
Based on 58,165 of 92,097 flights, August 29, 2026 to September 27, 2026.
How we count
- The window is 30 UTC days of scheduled arrival, August 29, 2026 to September 27, 2026, across the 155 airports whose arrival boards Gaduin records.
- Both conditional figures use the same arrivals as the baseline.
- Departure times are as each departure airport reports them: some report take-off, others pushback, so “departed late” follows that airport’s own departure time.
- A departure counts as running more than 60 minutes late on its actual time, or on its last estimate if it never left.
- Codeshares are counted once, under the operating flight number. Diverted flights and flights without a recorded outcome are left out.
Check a flight
See whether a specific flight is running late right now, and how it has arrived recently.
Keep learning
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