1,158 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

United is clearly ahead here: 4 in 5 of its flights arrive on time, 22 points better than Southwest.

Best time to leave 9–10 am 85% arrive on time from SFO

Best single flight UA 499 SFO 09:17 → BNA 15:53 · 84% 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).

SFO

% 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.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.


United	847	80%	0.5%	61 min
Southwest	311	58%	0.3%	51 min

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.


UA 499	SFO 09:17	BNA 15:53	84%

All 5 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.


UA 499	SFO 09:17	BNA 15:53	4h 36m	330	84%	0.6%	60 min
UA 635	SFO 16:10	BNA 22:46	4h 36m	20	50%	0.0%	93 min
UA 373	SFO 16:10	BNA 22:46	4h 36m	21	48%	0.0%	91 min
WN 3634	SFO 22:50	BNA 05:10	4h 20m	58	40%	0.0%	62 min
UA 1815	SFO 23:59	BNA 06:37	4h 38m	123	77%	0.0%	43 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.


United	SFO	BNA	4h 28m	80%	0.5%	847	Flying now
Southwest	SFO	BNA	4h 15m	58%	0.3%	311	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