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4,773 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 2 in 3.

Best time to leave 6–7 am 93% arrive on time from ATL
Best single flight DL 777 ATL 08:25 → LAS 09:31 · 86% on time Avoid F9 3923 ATL 19:11 → LAS 20:39 · 59% 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
ATL
92
90
92
85
76
75
83
81
75
71
76
72
72
60
56
71
73
% 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 ATL 9–10 am: 1Close ×
DL 945 ATL 09:55 LAS 11:07 4h 12m 172 84% 1.7% 61 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 156 81% 0.6% 72 min
Delta 3,322 78% 0.6% 58 min
Southwest 719 76% 0.4% 47 min
Frontier 576 65% 2.4% 93 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.
DL 777 ATL 08:25 LAS 09:31 86%
DL 945 ATL 09:55 LAS 11:07 84%
DL 659 ATL 07:25 LAS 08:35 81%
DL 466 ATL 11:00 LAS 12:10 80%
DL 549 ATL 13:15 LAS 14:26 80%
· · ·
DL 955 ATL 19:55 LAS 21:10 68%
DL 825 ATL 21:20 LAS 22:39 67%
F9 3923 ATL 19:11 LAS 20:39 59%
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.
Delta ATL LAS 4h 18m 78% 0.6% 3,322 Flying now
Southwest ATL LAS 4h 30m 76% 0.4% 719 Flying now
Frontier ATL LAS 4h 28m 65% 2.4% 576 Flying now
Spirit ATL LAS 4h 36m 81% 0.6% 156 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