background

(FR) Ryanair 4129 On-Time Performance Rating

Date Range:

15-Oct-2025 to 15-Dec-2025

(BRS) Bristol Airport

Bristol, EN, GB

(SOF) Sofia Airport

Sofia, BG

On-Time Performance Chart

(using rounded numbers)
On-Time
29
85%
Late
2
6%
Very Late
0
0%
Excessive
3
9%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
34
Total Delays ( > 1 min )
9
Codeshares
9
Average Delay (min.)
87.77777777777777
Standard Deviation
159.4
Min
0
Max
494

FR 4129 On-Time Performance Details

Overall Rating
2.3 of 5
Average
Percentage On-Time 85%
Average Delay Time 87.77777777777777 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.3 shows that this flight has on-time performance characteristics better than 44% of all other flights in the FlightStats database.
On-Time Performance Rating
4.5 of 5
Good
Percentage On-Time 85%
This flight has an on-time performance of 85%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 90% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 87.77777777777777 min
This flight has an average delay of 87.77777777777777 minutes with a standard deviation of 159.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.