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(WN) Southwest Airlines 1637 On-Time Performance Rating

Date Range:

15-Jul-2026 to 15-Sep-2026

(DEN) Denver International Airport

Denver, CO, US

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

On-Time Performance Chart

(using rounded numbers)
On-Time
11
37%
Late
2
7%
Very Late
3
10%
Excessive
12
40%
Cancelled
2
7%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
30
Total Delays ( > 1 min )
21
Codeshares
0
Average Delay (min.)
63.19047619047619
Standard Deviation
56.4
Min
0
Max
198

WN 1637 On-Time Performance Details

Overall Rating
0.1 of 5
Very Poor
Percentage On-Time 37%
Average Delay Time 63.19047619047619 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.1 shows that this flight has on-time performance characteristics better than 0% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 37%
This flight has an on-time performance of 37%. 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
0.1 of 5
Very Poor
Average Delay Time 63.19047619047619 min
This flight has an average delay of 63.19047619047619 minutes with a standard deviation of 56.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 2% of other flights.

Other Stops for WN 1637