Route on-time record
LAS to ATL: most on-time flights and the best time to fly
Las Vegas (Harry Reid International Airport) to Atlanta (Hartsfield Jackson Atlanta International Airport). 4,840 nonstop flights in Jun 2025 to May 2026, 84% arrived within 15 minutes and 1.1% were cancelled. The most reliable flight number was Delta 677 at 7:15 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
LAS → ATL
Las Vegas to Atlanta: 4,840 nonstop flights a year
On time (12 months)
84%
Cancelled
1.1%
avg delay 13 min
Best time to leave
Before 9 AM
91% on time vs 80% noon to 3 PM
Most reliable airline
Delta
86% chance on time
Lowest nonstop fare seen in the next two months: $164 (Frontier 2428 on 2026-10-22). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 677
7:15 AM → 2:05 PM3h 52m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.8%
- Avg arrival delay
- 7 min
- Arrived on time 94% of the time (360 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; Noon to 3 PM: 80%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 360 flights
Find Delta 677 fares Opens this date on Aviasales#2 · Delta 755
6:00 AM → 12:47 PM3h 47m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 94%
- Cancelled
- 1.4%
- Avg arrival delay
- 13 min
- Arrived on time 94% of the time (360 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; Noon to 3 PM: 80%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Strong track record · 360 flights
Find Delta 755 fares Opens this date on Aviasales#3 · Delta 927
10:03 AM → 4:55 PM3h 52m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.8%
- Avg arrival delay
- 6 min
- Arrived on time 92% of the time (236 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 236 flights
Find Delta 927 fares Opens this date on Aviasales#4 · Southwest 2535
11:20 PM → 6:10 AM3h 50m nonstop
Local times, typical schedule. Last flown 2026-05-30.
89%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 96% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Short track record (47 flights), so its score leans on the airline's record at this hour.
Limited track record · 47 flights
Find Southwest 2535 fares Opens this date on Aviasales#5 · Delta 824
10:10 AM → 8:23 PM3h 55m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 88%
- Cancelled
- 1.8%
- Avg arrival delay
- 6 min
- Arrived on time 88% of the time (112 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 112 flights
Find Delta 824 fares Opens this date on Aviasales#6 · Southwest 3462
9:40 AM → 4:40 PM4h 00m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 91% of the time (32 flights, Jun 2025 to May 2026).
- Never cancelled in 32 scheduled flights.
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 32 flights
Find Southwest 3462 fares Opens this date on Aviasales#7 · Southwest 1756
7:30 AM → 2:15 PM3h 45m nonstop
Local times, typical schedule. Last flown 2026-04-06.
86%
chance on time
- On time (history)
- 81%
- Cancelled
- 3.0%
- Avg arrival delay
- 6 min
- Arrived on time 81% of the time (31 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; Noon to 3 PM: 80%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Limited track record · 31 flights
Find Southwest 1756 fares Opens this date on Aviasales#8 · Delta 748
4:40 PM → 11:32 PM3h 52m nonstop
Local times, typical schedule. Last flown 2026-05-04.
86%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 87% of the time (199 flights, Jun 2025 to May 2026).
- Never cancelled in 200 scheduled flights.
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Moderate track record · 199 flights
Find Delta 748 fares Opens this date on Aviasales#9 · Delta 417
10:20 PM → 5:12 AM3h 50m nonstop
Local times, typical schedule. Last flown 2026-05-06.
86%
chance on time
- On time (history)
- 87%
- Cancelled
- 1.8%
- Avg arrival delay
- 9 min
- Arrived on time 87% of the time (160 flights, Jun 2025 to May 2026).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Moderate track record · 160 flights
Find Delta 417 fares Opens this date on Aviasales#10 · Delta 466
1:25 PM → 8:21 PM3h 56m nonstop
Local times, typical schedule. Last flown 2026-05-06.
85%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.7%
- Avg arrival delay
- 14 min
- Arrived on time 85% of the time (286 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 80% on time; Before 9 AM: 91%).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
Strong track record · 286 flights
Find Delta 466 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines86%
3,356 flights · 86% on time as flown · 1.0% cancel
- Southwest Airlines83%
721 flights · 84% on time as flown · 0.8% cancel
- Spirit Airlines80%
220 flights · 80% on time as flown · 1.0% cancel
- Frontier Airlines73%
543 flights · 73% on time as flown · 2.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
1,140 flights · avg delay 10 min
- 9 AM to noon87%
869 flights · avg delay 10 min
- Noon to 3 PM80%
1,039 flights · avg delay 17 min
- 3 to 6 PM83%
170 flights · avg delay 14 min
- After 9 PM81%
1,621 flights · avg delay 12 min
Best day: Wednesday (88%). Worst: Sunday (79%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)51%
- Late-arriving aircraft33%
- Air traffic control and airport volume16%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
LAS to ATL questions
- What time of day is best to fly LAS to ATL?
- Before 9 AM: 91% of flights arrived on time, against 80% for departures noon to 3 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from LAS to ATL?
- Delta, with a season-adjusted 86% chance of operating and arriving on time over 3,356 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on LAS to ATL?
- July (69% on time); the best was December (90%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from LAS
- ATL to LAS (return)
- LAS to LAX 79%
- LAS to DEN 77%
- LAS to SAN 68%
- LAS to PHX 78%
- LAS to SFO 66%
- LAS to SEA 82%
- LAS to ORD 77%
- LAS to DFW 81%
- LAS to SNA 82%
- LAS to SMF 79%
- LAS to BUR 80%
- LAS to RNO 80%
Live status: FAA delays and ground stops