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(WN) Southwest Airlines 4378 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(DAL) Dallas Love Field

Dallas, TX, US

(BHM) Birmingham-Shuttlesworth International Airport

Birmingham, AL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
5
63%
Late
0
0%
Very Late
2
25%
Excessive
1
13%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
8
Total Delays ( > 1 min )
7
Codeshares
0
Average Delay (min.)
21.142857142857142
Standard Deviation
19.8
Min
0
Max
54

WN 4378 On-Time Performance Details

Overall Rating
2.2 of 5
Average
Percentage On-Time 63%
Average Delay Time 21.142857142857142 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 43% of all other flights in the FlightStats database.
On-Time Performance Rating
0.8 of 5
Poor
Percentage On-Time 63%
This flight has an on-time performance of 63%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 16% of other flights.
Delay Performance
3.6 of 5
Good
Average Delay Time 21.142857142857142 min
This flight has an average delay of 21.142857142857142 minutes with a standard deviation of 19.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 73% of other flights.

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