No clear winner: Delta’s SAN → BOS flights land within a few points of 4 in 5 on time whatever the hour.
Time of day × airport
Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).
Pick an hour to see this route’s flights leaving then.
Flights, best and worst
Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
| DL 571 | SAN 21:54 | BOS 06:30 | 85% |
All 1 Delta flights in the current schedule
Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
| DL 571 | SAN 21:54 | BOS 06:30 | 5h 36m | 162 | 85% | 0.0% | 125 min |
Nonstops by airline and airport
Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
| Delta | SAN | BOS | 5h 30m | 81% | 1.6% | 364 | Flying now |
Alternatives with one stop
All connections →| DeltaDetails → | SAN 22:30 → ATL 05:50DL 819 | 1h 20m Atlanta | ATL 07:10 → BOS 09:45 +1DL 987 | 8h 15m | 99% | 86% |
| DeltaDetails → | SAN 19:13 → SLC 22:15DL 1252 | 1h 16m Salt Lake City | SLC 23:31 → BOS 06:05 +1DL 696 | 7h 52m | 95% | 85% |
| DeltaDetails → | SAN 22:15 → DTW 05:43DL 764 | 1h 22m Detroit | DTW 07:05 → BOS 09:07 +1DL 1163 | 7h 52m | 97% | 85% |
About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON