Showing Delta only (incl. its regional partners)All airlines ×

918 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 85% depart on time. After 4 pm it’s 7 in 10.

Best time to leave 7–8 am 82% arrive on time from BOS

Best single flight DL 977 BOS 07:20 → SFO 10:59 · 82% on time Avoid DL 1655 BOS 17:05 → SFO 20:51 · 69% on time

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).

BOS

% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

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 977	BOS 07:20	SFO 10:59	82%
DL 1655	BOS 17:05	SFO 20:51	69%

All 4 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 977	BOS 07:20	SFO 10:59	6h 39m	203	82%	2.5%	52 min
DL 860	BOS 10:11	SFO 13:45	6h 36m	54	51%	0.0%	61 min
DL 1655	BOS 17:05	SFO 20:51	6h 48m	337	69%	1.8%	58 min
DL 2919	BOS 20:55	SFO 00:33	6h 38m	67	66%	1.5%	47 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	SFO	6h 47m	72%	1.5%	918	Flying now

Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

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