1,256 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Delta is clearly ahead here: 84% of its flights arrive on time, 11 points better than JetBlue.

Best time to leave 11 pm–12 am 88% arrive on time from SLC

Best single flight DL 696 SLC 23:31 → BOS 06:05 · 92% on time Avoid DL 702 SLC 17:15 → BOS 23:49 · 79% 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).

SLC

% 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

Boston flights leaving SLC 5–6 pm: 1Close ×


DL 702	SLC 17:15	BOS 23:49	4h 34m	364	79%	1.1%	83 min

Airlines on this route

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


Delta	1,083	84%	1.3%	63 min
JetBlue	173	73%	6.4%	72 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.


DL 696	SLC 23:31	BOS 06:05	92%
DL 657	SLC 09:50	BOS 16:37	82%
DL 702	SLC 17:15	BOS 23:49	79%

All 4 flights on this route →

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	SLC	BOS	4h 38m	84%	1.3%	1,083	Flying now
JetBlue	SLC	BOS	4h 32m	73%	6.4%	173	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