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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
Las Vegas flights leaving ORD 5–6 pm: 1Close ×
AA 3292 ORD 17:30 LAS 19:28 3h 58m 138 58% 2.2% 77 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 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