(WN) Southwest Airlines 377 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(MKE) Milwaukee Mitchell International Airport

Milwaukee, WI, US

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

On-Time Performance Chart

(using rounded numbers)

On-Time

47%

Late

Very Late

20%

Excessive

20%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

42.5

Standard Deviation

21.3

Min

Max

WN 377 On-Time Performance Details

Overall Rating

0.8 of 5

Poor

Percentage On-Time 47%

Average Delay Time 42.5 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.8 shows that this flight has on-time performance characteristics better than 14% of all other flights in the FlightStats database.

On-Time Performance Rating

0.0 of 5

Very Poor

Percentage On-Time 47%

This flight has an on-time performance of 47%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.

Delay Performance

1.5 of 5

Poor

Average Delay Time 42.5 min

This flight has an average delay of 42.5 minutes with a standard deviation of 21.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 31% of other flights.