2,546 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 88% depart on time. After 4 pm it’s 7 in 10.

Best time to leave 10–11 am 89% arrive on time from BUF

Best single flight AA 1195 BUF 06:00 → ORD 07:03 · 88% on time Avoid UA 4381 BUF 13:54 → ORD 14:55 · 73% 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).

BUF

% 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

Chicago flights leaving BUF 6–7 am: 1Close ×


AA 1195	BUF 06:00	ORD 07:03	2h 03m	162	88%	4.3%	175 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.


American (incl. Envoy, SkyWest, Republic)	1,230	78%	3.3%	90 min
United (incl. GoJet, SkyWest, Republic)	1,316	72%	3.0%	121 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.


AA 1195	BUF 06:00	ORD 07:03	88%
UA 4381flown by GoJet	BUF 13:54	ORD 14:55	73%

All 10 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.


American	BUF	ORD	2h 07m	78%	3.3%	1,230	Flying now
United	BUF	ORD	2h 03m	72%	3.0%	1,316	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