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(FB) Bulgaria Air 851 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(SOF) Sofia Airport

Sofia, BG

(LHR) London Heathrow Airport

London, EN, GB

On-Time Performance Chart

(using rounded numbers)
On-Time
25
66%
Late
9
24%
Very Late
2
5%
Excessive
1
3%
Cancelled
0
0%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
37
Total Delays ( > 1 min )
26
Codeshares
0
Average Delay (min.)
15.73076923076923
Standard Deviation
11.8
Min
0
Max
58

FB 851 On-Time Performance Details

Overall Rating
2.6 of 5
Average
Percentage On-Time 68%
Average Delay Time 15.73076923076923 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.6 shows that this flight has on-time performance characteristics better than 50% of all other flights in the FlightStats database.
On-Time Performance Rating
0.4 of 5
Very Poor
Percentage On-Time 68%
This flight has an on-time performance of 68%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 8% of other flights.
Delay Performance
4.7 of 5
Very Good
Average Delay Time 15.73076923076923 min
This flight has an average delay of 15.73076923076923 minutes with a standard deviation of 11.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 93% of other flights.