The nonstop is quickest: Delta BOS → SAN (6h 16m), on time 68% of the time. Delta via Atlanta (10h 51m) is more reliable, 84%, but takes 4h 35m longer.
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 | BOS 17:10 | SAN 20:26 | 70% |
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 | BOS 17:10 | SAN 20:26 | 6h 16m | 364 | 70% | 1.6% | 44 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 | BOS | SAN | 6h 16m | 70% | 1.6% | 364 | Flying now |
Alternatives with one stop
All connections →| DeltaDetails → | BOS 06:05 → SLC 09:18DL 859 | 1h 57m Salt Lake City | SLC 11:15 → SAN 12:17DL 1296 | 9h 12m | 98% | 80% |
| DeltaDetails → | BOS 05:30 → ATL 08:15DL 2242 | 1h 53m Atlanta | ATL 10:08 → SAN 11:37DL 712 | 9h 07m | 100% | 79% |
| DeltaDetails → | BOS 07:15 → MSP 09:30DL 1138 | 2h 08m Minneapolis | MSP 11:38 → SAN 13:29DL 2125 | 9h 14m | 98% | 78% |
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