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(WN) Southwest Airlines 3677 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
8
62%
Late
2
15%
Very Late
2
15%
Excessive
1
8%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
13
Total Delays ( > 1 min )
9
Codeshares
0
Average Delay (min.)
36.44444444444444
Standard Deviation
51.6
Min
0
Max
169

WN 3677 On-Time Performance Details

Overall Rating
1.4 of 5
Poor
Percentage On-Time 62%
Average Delay Time 36.44444444444444 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.4 shows that this flight has on-time performance characteristics better than 26% of all other flights in the FlightStats database.
On-Time Performance Rating
0.6 of 5
Poor
Percentage On-Time 62%
This flight has an on-time performance of 62%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 12% of other flights.
Delay Performance
2.1 of 5
Average
Average Delay Time 36.44444444444444 min
This flight has an average delay of 36.44444444444444 minutes with a standard deviation of 51.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 42% of other flights.

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