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(UA) United Airlines 1503 On-Time Performance Rating

Date Range:

01-Jun-2026 to 31-Jul-2026

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
44
73%
Late
5
8%
Very Late
2
3%
Excessive
7
12%
Cancelled
1
2%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
59
Total Delays ( > 1 min )
22
Codeshares
0
Average Delay (min.)
65.63636363636364
Standard Deviation
92.2
Min
0
Max
355

UA 1503 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 75%
Average Delay Time 65.63636363636364 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 33% of all other flights in the FlightStats database.
On-Time Performance Rating
3.3 of 5
Average
Percentage On-Time 75%
This flight has an on-time performance of 75%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 66% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 65.63636363636364 min
This flight has an average delay of 65.63636363636364 minutes with a standard deviation of 92.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 1% of other flights.