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(UL) SriLankan Airlines 121 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(CMB) Colombo Bandaranaike International Airport

Colombo, LK

(MAA) Chennai International Airport

Chennai, IN

On-Time Performance Chart

(using rounded numbers)
On-Time
45
74%
Late
10
16%
Very Late
2
3%
Excessive
4
7%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
31
Codeshares
0
Average Delay (min.)
20.774193548387096
Standard Deviation
19.4
Min
0
Max
69

UL 121 On-Time Performance Details

Overall Rating
3.8 of 5
Good
Percentage On-Time 74%
Average Delay Time 20.774193548387096 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.8 shows that this flight has on-time performance characteristics better than 74% of all other flights in the FlightStats database.
On-Time Performance Rating
2.9 of 5
Average
Percentage On-Time 74%
This flight has an on-time performance of 74%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 58% of other flights.
Delay Performance
4.6 of 5
Very Good
Average Delay Time 20.774193548387096 min
This flight has an average delay of 20.774193548387096 minutes with a standard deviation of 19.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 92% of other flights.