Las Vegas (LAS) to Atlanta (ATL): On-Time Performance
Data through July 2026
The calendar drives reliability on LAS–ATL. November 2024 flights landed on schedule 94% of the time, but July 2024 dropped to 61% — a gap of 34 points. Across the full period the route averages 83% on-time against a national 78%. Morning departures also hold up better than evening ones (88% vs 80%), which matters most in the rough months.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 13
- last 12 months
- Duration
- 3h 57m
- scheduled
- Distance
- 1,747 mi
Best airline from LAS to ATL
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 85% | 12 min | 1.1% | 7,062 |
| Southwest Airlines | 82% | 9 min | 0.5% | 1,535 |
| Spirit Airlines | 75% | 20 min | 2.0% | 701 |
| Frontier Airlines | 73% | 20 min | 2.2% | 990 |
Monthly on-time trend
Best time to fly from LAS to ATL
Aim for departures around 6 a.m. (93% on-time); avoid 9 p.m. departures (63%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 14 min |
| Tuesday | 87% | 9 min |
| Wednesdaybest | 89% | 10 min |
| Thursday | 81% | 15 min |
| Friday | 79% | 16 min |
| Saturday | 84% | 13 min |
| Sunday | 80% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft36%
- Airline operations46%
- National airspace system16%
- Weather2%
Frequently asked questions
- How often are flights from LAS to ATL delayed?
- 17% of LAS–ATL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 13 minutes.
- Which airline is most reliable from LAS to ATL?
- Delta Air Lines has the best on-time record on this route at 85%, based on 7,062 flights. 4 airlines flew LAS–ATL frequently enough to compare in this period.
- What is the best time of day to fly from LAS to ATL?
- Departures around 6 a.m. have the best record (93% on-time), while departures around 9 p.m. have the worst (63%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LAS to ATL?
- The scheduled LAS–ATL flight time averages 3h 57m over 1,747 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are LAS to ATL flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from LAS to ATL?
- July 2024 was the roughest month in this dataset, with only 61% of arrivals on time. The best was November 2024 at 94%. If your dates are flexible, that 34-point gap is worth planning around.
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Based on 10,288 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.