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(S4) Azores Airlines 121 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(LIS) Lisbon Humberto Delgado Airport

Lisbon, PT

(PDL) Ponta Delgada Joao Paulo II Airport

Ponta Delgada (Azores), PT

On-Time Performance Chart

(using rounded numbers)
On-Time
51
91%
Late
1
2%
Very Late
2
4%
Excessive
1
2%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
55
Total Delays ( > 1 min )
4
Codeshares
0
Average Delay (min.)
82.75
Standard Deviation
97.9
Min
0
Max
229

S4 121 On-Time Performance Details

Overall Rating
2.6 of 5
Average
Percentage On-Time 93%
Average Delay Time 82.75 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 51% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 93%
This flight has an on-time performance of 93%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 100% of other flights.
Delay Performance
0.2 of 5
Very Poor
Average Delay Time 82.75 min
This flight has an average delay of 82.75 minutes with a standard deviation of 97.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 4% of other flights.