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(DL) Delta Air Lines 421 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

(LAS) Las Vegas Harry Reid International Airport

Las Vegas, NV, US

On-Time Performance Chart

(using rounded numbers)
On-Time
42
67%
Late
7
11%
Very Late
4
6%
Excessive
8
13%
Cancelled
0
0%
Diverted
2
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
37
Codeshares
0
Average Delay (min.)
25.10810810810811
Standard Deviation
25.8
Min
0
Max
91

DL 421 On-Time Performance Details

Overall Rating
2.5 of 5
Average
Percentage On-Time 69%
Average Delay Time 25.10810810810811 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.5 shows that this flight has on-time performance characteristics better than 48% of all other flights in the FlightStats database.
On-Time Performance Rating
0.6 of 5
Poor
Percentage On-Time 69%
This flight has an on-time performance of 69%. 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
4.3 of 5
Good
Average Delay Time 25.10810810810811 min
This flight has an average delay of 25.10810810810811 minutes with a standard deviation of 25.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 86% of other flights.