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(UL) SriLankan Airlines 503 On-Time Performance Rating

Date Range:

15-Nov-2025 to 15-Jan-2026

(CMB) Colombo Bandaranaike International Airport

Colombo, LK

(LHR) London Heathrow Airport

London, EN, GB

On-Time Performance Chart

(using rounded numbers)
On-Time
40
67%
Late
9
15%
Very Late
3
5%
Excessive
8
13%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
38
Codeshares
0
Average Delay (min.)
29.13157894736842
Standard Deviation
35.8
Min
0
Max
156

UL 503 On-Time Performance Details

Overall Rating
2.2 of 5
Average
Percentage On-Time 67%
Average Delay Time 29.13157894736842 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.2 shows that this flight has on-time performance characteristics better than 42% of all other flights in the FlightStats database.
On-Time Performance Rating
0.5 of 5
Very Poor
Percentage On-Time 67%
This flight has an on-time performance of 67%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 10% of other flights.
Delay Performance
3.8 of 5
Good
Average Delay Time 29.13157894736842 min
This flight has an average delay of 29.13157894736842 minutes with a standard deviation of 35.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.