Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 2530 · Delta Air Lines

San Diego → Seattle (SAN–SEA)

98
Nerd Approved
WanderNerd Reliability Score
93%
Arrive within 15 minutes
8 min early
Average arrival delay
0.3%
Cancelled
17 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

DL 2530 arrived on time 98% of the time on Mondays. On Fridays: 88%.

Better than the SAN–SEA route average.

DL 2530 arrived on time 93% of the time, versus 81% across the SAN–SEA route.

Better than the Delta Air Lines network average.

DL 2530 arrived on time 93% of the time, versus 81% across the Delta Air Lines network.

It basically never cancels.

Out of 365 scheduled flights, only 0.3% were cancelled.

The breakdown

On-time by weekday
  • Mon98%(52 flights)
  • Tue96%(52 flights)
  • Wed98%(51 flights)
  • Thu89%(52 flights)
  • Fri88%(51 flights)
  • Sat90%(52 flights)
  • Sun89%(53 flights)
On-time trend by month
90%
May

Jun 90% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202597%31
August 202587%31
September 202593%30
October 202587%30
November 202597%30
December 202597%31
January 202694%31
February 202696%28
March 202690%30
April 202693%30
May 202690%31
Departures on time
94%
Diverted
0.3%
Flights flown
363
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.