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(WN) Southwest Airlines 4279 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(SJU) Luis Munoz Marin International Airport

San Juan, PR

(BWI) Baltimore Washington International Airport

Baltimore, MD, US

On-Time Performance Chart

(using rounded numbers)
On-Time
7
78%
Late
1
11%
Very Late
0
0%
Excessive
1
11%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
9
Total Delays ( > 1 min )
5
Codeshares
0
Average Delay (min.)
75.2
Standard Deviation
146.5
Min
0
Max
337

WN 4279 On-Time Performance Details

Overall Rating
1.5 of 5
Poor
Percentage On-Time 78%
Average Delay Time 75.2 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.5 shows that this flight has on-time performance characteristics better than 29% of all other flights in the FlightStats database.
On-Time Performance Rating
2.7 of 5
Average
Percentage On-Time 78%
This flight has an on-time performance of 78%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 54% of other flights.
Delay Performance
0.3 of 5
Very Poor
Average Delay Time 75.2 min
This flight has an average delay of 75.2 minutes with a standard deviation of 146.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 5% of other flights.

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