ON TIMEBOARD
Delta Air Lines / SEA → SAN

DL 2508 on time

Delta Air Lines 2508: Seattle to San Diego at 7:15 a.m.; San Diego to Seattle at 11:00 a.m. (past 12 months). Figures below the title are for SEA → SAN, its busiest leg

On time
89%
349 flights · likely 85–92%
Cancelled
0.6%
of scheduled flights
Typical arrival
−12 min
median vs schedule
When late
+53 min
average delay
Similar flights
89%
DL, same route & hour

About 1 in 9 DL 2508 flights from Seattle arrived 15+ minutes late, diverted or cancelled over the past year (11%); 0.6% were cancelled. The typical flight landed 12 minutes early.

DL 2508: SEA → SAN

Scheduled to leave Seattle at 7:15 a.m. local time. Over the past year it arrived on time 89% of the time (349 flights), in line with other DL flights on the route at that hour (89%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 93% on time (30 flights)93SepOct 2025: 86% on time (28 flights)86OctNov 2025: 80% on time (25 flights)80NovDec 2025: 86% on time (29 flights)86DecJan 2026: 94% on time (31 flights)94JanFeb 2026: 95% on time (22 flights)95FebMar 2026: 77% on time (31 flights)77MarApr 2026: 93% on time (30 flights)93AprMay 2026: 97% on time (31 flights)97MayJun 2026: 90% on time (30 flights)90JunJul 2026: 84% on time (31 flights)84JulAug 2026: 90% on time (31 flights)90Aug

By day of week

DayFlightsOn time
Monday5285%
Tuesday5298%
Wednesday5192%
Thursday5281%
Friday5188%
Saturday4185%
Sunday5092%

Why it was late

Airline (crew, maintenance, ops) 63%Air traffic & airport (NAS) 29%Late inbound plane 4%Severe weather 4%

All flights SEA → SAN · Connecting off DL 2508? Check the risk

DL 2508: SAN → SEA

Scheduled to leave San Diego at 11:00 a.m. local time. Over the past year it arrived on time 90% of the time (349 flights), in line with other DL flights on the route at that hour (90%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 90% on time (30 flights)90SepOct 2025: 89% on time (28 flights)89OctNov 2025: 80% on time (25 flights)80NovDec 2025: 90% on time (29 flights)90DecJan 2026: 94% on time (31 flights)94JanFeb 2026: 95% on time (22 flights)95FebMar 2026: 77% on time (31 flights)77MarApr 2026: 97% on time (30 flights)97AprMay 2026: 94% on time (31 flights)94MayJun 2026: 93% on time (30 flights)93JunJul 2026: 90% on time (31 flights)90JulAug 2026: 87% on time (31 flights)87Aug

By day of week

DayFlightsOn time
Monday5285%
Tuesday52100%
Wednesday5192%
Thursday5283%
Friday5190%
Saturday4185%
Sunday5092%

Why it was late

Late inbound plane 49%Airline (crew, maintenance, ops) 32%Air traffic & airport (NAS) 19%

All flights SAN → SEA · Connecting off DL 2508? Check the risk

Questions

How often is DL 2508 from SEA to SAN late?

Delta Air Lines 2508 from Seattle, WA to San Diego, CA arrived 15 or more minutes late, was diverted or was cancelled on 11% of 349 scheduled flights between September 2025 and August 2026. 0.6% were cancelled.

How often is DL 2508 from SAN to SEA late?

Delta Air Lines 2508 from San Diego, CA to Seattle, WA arrived 15 or more minutes late, was diverted or was cancelled on 10% of 349 scheduled flights between September 2025 and August 2026. 0.9% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.