7,750 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 92% depart on time. After 4 pm it’s 62%.

Best time to leave 6–7 am 94% arrive on time from BOS

Best single flight UA 1414 BOS 06:00 → ORD 07:58 · 95% on time Avoid UA 1015 BOS 18:43 → ORD 20:40 · 51% 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.

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	2,733	77%	2.0%	88 min
American (incl. Envoy, Republic)	3,160	74%	3.5%	96 min
JetBlue	544	71%	2.8%	74 min
Delta (incl. Republic)	1,313	67%	4.3%	76 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 1414	BOS 06:00	ORD 07:58	95%
AA 1239	BOS 08:58	ORD 11:00	93%
AA 1509	BOS 07:00	ORD 09:01	90%
UA 1349	BOS 09:50	ORD 11:43	87%
UA 1732	BOS 12:30	ORD 14:23	85%
· · ·
B6 811	BOS 17:20	ORD 19:25	58%
UA 2040	BOS 17:00	ORD 19:00	55%
UA 1015	BOS 18:43	ORD 20:40	51%

All 29 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.


AA 3324	BOS 05:10	ORD 07:04	2h 54m	137	92%	2.2%	72 min
UA 1414	BOS 06:00	ORD 07:58	2h 58m	337	95%	2.4%	44 min
AA 1509	BOS 07:00	ORD 09:01	3h 01m	206	90%	0.5%	98 min
UA 2631	BOS 07:19	ORD 09:17	2h 58m	37	91%	5.4%	31 min
UA 366	BOS 07:19	ORD 09:17	2h 58m	58	95%	1.7%	47 min
DL 2570	BOS 07:30	ORD 09:28	2h 58m	263	82%	3.0%	60 min
B6 311	BOS 08:10	ORD 10:06	2h 56m	285	82%	1.8%	66 min
UA 1834	BOS 08:15	ORD 10:12	2h 57m	66	92%	0.0%	41 min
AA 1239	BOS 08:58	ORD 11:00	3h 02m	165	93%	1.2%	118 min
UA 1349	BOS 09:50	ORD 11:43	2h 53m	277	87%	1.8%	71 min
AA 3022	BOS 10:29	ORD 12:30	3h 00m	71	91%	0.0%	211 min
UA 503	BOS 10:35	ORD 12:28	2h 53m	135	86%	0.0%	173 min
AA 1610	BOS 12:01	ORD 14:02	3h 01m	71	91%	1.4%	178 min
DL 2816	BOS 12:25	ORD 14:19	2h 54m	91	83%	3.3%	96 min
UA 1732	BOS 12:30	ORD 14:23	2h 53m	353	85%	1.1%	112 min
AA 4386flown by Republic	BOS 13:01	ORD 15:10	3h 09m	72	80%	4.2%	160 min
AA 3711flown by Envoy	BOS 13:56	ORD 15:59	3h 05m	216	81%	2.8%	127 min
UA 1691	BOS 15:08	ORD 17:00	2h 52m	35	68%	0.0%	98 min
AA 872	BOS 15:10	ORD 17:20	3h 10m	42	62%	4.8%	109 min
UA 1475	BOS 15:13	ORD 17:05	2h 52m	37	65%	0.0%	151 min
AA 1563	BOS 15:20	ORD 17:30	3h 10m	30	52%	3.3%	153 min
DL 2646	BOS 16:15	ORD 18:19	3h 04m	259	61%	4.6%	79 min
UA 2040	BOS 17:00	ORD 19:00	3h 00m	361	55%	2.5%	70 min
B6 811	BOS 17:20	ORD 19:25	3h 05m	256	58%	3.9%	79 min
AA 1592	BOS 17:38	ORD 19:59	3h 21m	72	38%	8.3%	78 min
AA 1554	BOS 18:31	ORD 21:00	3h 29m	72	61%	6.9%	118 min
UA 1015	BOS 18:43	ORD 20:40	2h 57m	302	51%	5.0%	85 min
UA 2229	BOS 20:15	ORD 22:15	3h 00m	137	57%	1.5%	122 min
DL 2804	BOS 20:45	ORD 22:39	2h 57m	109	47%	6.4%	75 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	BOS	ORD	2h 58m	77%	2.0%	2,733	Flying now
American	BOS	ORD	3h 10m	74%	3.5%	3,160	Flying now
JetBlue	BOS	ORD	3h 05m	71%	2.8%	544	Flying now
Delta	BOS	ORD	3h 03m	67%	4.3%	1,313	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