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Flight Reliability

DL 3502 · Delta Air Lines

Tucson → Los Angeles (TUS–LAX)90% of its flights flew this route. The rest (DTW–GRB, GRB–DTW) are included in these numbers.

99
Nerd Approved
WanderNerd Reliability Score
93%
Arrive within 15 minutes
9 min early
Average arrival delay
0%
Cancelled
14 min early
Median arrival delay

Based on 201 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

DL 3502 departing between 6–9 AM arrived on time 94% of the time, versus 78% between 3–6 PM.

Skip Monday if you can.

DL 3502 arrived on time 96% of the time on Wednesdays. On Mondays: 89%.

A bit ahead of the TUS–LAX route.

DL 3502 arrived on time 93% of the time, versus 86% across the TUS–LAX route.

Better than the Delta Air Lines network average.

DL 3502 arrived on time 93% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon89%(26 flights)
  • Tue92%(26 flights)
  • Wed96%(26 flights)
  • Thu92%(26 flights)
  • Fri96%(26 flights)
  • Sat91%(44 flights)
  • Sun92%(26 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM94%(181 flights)
  • 3–6 PM78%(18 flights)
On-time trend by month
97%
May

Dec 90% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
December 202590%30
January 202697%31
February 202682%28
March 202697%31
April 2026100%30
May 202697%31
Departures on time
96%
Diverted
0.5%
Flights flown
200
Months covered
10

Same route, other flights

Keep nerding

Based on 201 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.