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

1,074 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: Delta’s OAK → SLC flights land within a few points of 94% on time whatever the hour.

Best time to leave 5–6 am 97% arrive on time from OAK

Best single flight DL 4061 OAK 06:00 → SLC 08:55 · 97% on time Avoid DL 3903 OAK 17:05 → SLC 20:00 · 92% 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).

OAK

% 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 4061flown by SkyWest	OAK 06:00	SLC 08:55	97%
DL 4134flown by SkyWest	OAK 12:33	SLC 15:29	93%
DL 3903flown by SkyWest	OAK 17:05	SLC 20:00	92%

All 3 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 4061flown by SkyWest	OAK 06:00	SLC 08:55	1h 55m	365	97%	0.0%	116 min
DL 4134flown by SkyWest	OAK 12:33	SLC 15:29	1h 56m	365	93%	0.5%	60 min
DL 3903flown by SkyWest	OAK 17:05	SLC 20:00	1h 57m	344	92%	0.0%	61 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	OAK	SLC	1h 56m	94%	0.2%	1,074	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