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5,241 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 3 in 5.

Best time to leave 6–7 am 92% arrive on time from ORD
Best single flight UA 574 ORD 07:11 → LAS 09:19 · 97% on time Avoid F9 2145 ORD 07:15 → LAS 09:23 · 63% 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
ORD
93
91
85
85
76
89
84
79
79
64
64
64
60
63
53
62
52
% 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.
Spirit 198 84% 1.5% 75 min
United 2,335 81% 0.5% 71 min
Southwest 609 75% 0.8% 71 min
American 1,893 67% 2.3% 72 min
Frontier 206 61% 5.3% 162 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 574 ORD 07:11 LAS 09:19 97%
UA 2440 ORD 11:00 LAS 13:05 87%
UA 777 ORD 12:40 LAS 14:45 76%
UA 1875 ORD 15:54 LAS 17:57 75%
F9 2145 ORD 07:15 LAS 09:23 63%
All 17 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.
United ORD LAS 4h 09m 81% 0.5% 2,335 Flying now
American ORD LAS 4h 08m 67% 2.3% 1,893 Flying now
Frontier ORD LAS 4h 20m 61% 5.3% 206 Flying now
Spirit ORD LAS 4h 01m 84% 1.5% 198 Not flying now
Southwest ORD LAS 4h 05m 75% 0.8% 609 Not 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