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5,237 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 72%.

Best time to leave 6–7 am 93% arrive on time from LAS
Best single flight UA 2102 LAS 23:30 → ORD 05:11 · 92% on time Avoid UA 706 LAS 14:25 → ORD 20:23 · 67% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
LAS
94
91
82
84
86
85
79
61
79
65
65
67
56
72
77
% 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 LAS 12–1 pm: 1Close ×
AA 3039 LAS 12:33 ORD 18:44 4h 11m 72 76% 1.4% 74 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.
Spirit 199 85% 2.0% 57 min
United 2,337 80% 0.5% 78 min
American 1,889 76% 2.3% 109 min
Southwest 608 69% 0.3% 61 min
Frontier 204 69% 3.9% 98 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 2102 LAS 23:30 ORD 05:11 92%
AA 2258 LAS 07:20 ORD 13:16 89%
UA 664 LAS 07:00 ORD 12:48 89%
UA 1583 LAS 10:25 ORD 16:21 83%
F9 2146 LAS 23:49 ORD 05:37 70%
· · ·
UA 706 LAS 14:25 ORD 20:23 67%
All 16 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 LAS ORD 3h 47m 80% 0.5% 2,337 Flying now
American LAS ORD 3h 49m 76% 2.3% 1,889 Flying now
Frontier LAS ORD 3h 48m 69% 3.9% 204 Flying now
Spirit LAS ORD 3h 38m 85% 2.0% 199 Not flying now
Southwest LAS ORD 3h 45m 69% 0.3% 608 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