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

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

Leave before 9 am: 4 in 5 depart on time. After 4 pm it’s barely half.

Best time to leave 6–7 am 87% arrive on time from ATL

Best single flight F9 3512 ATL 05:05 → BOS 07:52 · 75% on time Avoid F9 3086 ATL 22:40 → BOS 01:27 · 58% 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).

ATL

% 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.


F9 3512	ATL 05:05	BOS 07:52	75%
F9 3086	ATL 22:40	BOS 01:27	58%

All 2 Frontier 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.


F9 3512	ATL 05:05	BOS 07:52	2h 44m	243	75%	1.6%	58 min
F9 3086	ATL 22:40	BOS 01:27	2h 47m	184	58%	3.8%	54 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.


Frontier	ATL	BOS	2h 47m	68%	2.6%	427	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