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

Date Range:

01-Jul-2026 to 31-Aug-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
31
49%
Late
12
19%
Very Late
5
8%
Excessive
11
17%
Cancelled
2
3%
Diverted
2
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
44
Codeshares
0
Average Delay (min.)
35.31818181818182
Standard Deviation
46.7
Min
0
Max
276

DL 421 On-Time Performance Details

Overall Rating
1.6 of 5
Average
Percentage On-Time 51%
Average Delay Time 35.31818181818182 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.6 shows that this flight has on-time performance characteristics better than 30% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 51%
This flight has an on-time performance of 51%. 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
3.1 of 5
Average
Average Delay Time 35.31818181818182 min
This flight has an average delay of 35.31818181818182 minutes with a standard deviation of 46.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 62% of other flights.