ATL to LAS flight delays & on-time performance
Nonstop flights from Hartsfield Jackson Atlanta International Airport to Harry Reid International Airport · 1,747 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ATL or LAS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Atlanta (ATL) to Las Vegas (LAS) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.8% were cancelled, and 8% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (78% on time); Frontier Airlines was the least (64%).
- Departures scheduled around 6am did best (93% on time); around 7pm did worst (63%).
- Wednesday was the most reliable day to fly (84% on time) and Monday the least (72%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (45%).
Which airline is most on time from ATL to LAS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Spirit Airlines | 80% | 0.6% | 15 min | 6.5% | 156 |
| Delta Air Lines | 78% | 0.6% | 14 min | 6.9% | 3,322 |
| Southwest Airlines | 76% | 0.4% | 12 min | 5.3% | 719 |
| Frontier Airlines | 64% | 2.4% | 34 min | 16.1% | 576 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am93%280 flights
- 7am88%283 flights
- 8am88%372 flights
- 9am81%303 flights
- 10am79%181 flights
- 11am76%364 flights
- 12pm81%212 flights
- 1pm77%171 flights
- 2pm77%136 flights
- 3pm74%192 flights
- 4pm79%246 flights
- 5pm75%334 flights
- 6pm70%285 flights
- 7pm63%597 flights
- 8pm64%383 flights
- 9pm68%345 flights
- 10pm71%74 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday72%0.6% cancelled
- Tuesday78%0.2% cancelled
- Wednesday84%0.3% cancelled
- Thursday74%0.0% cancelled
- Friday75%1.1% cancelled
- Saturday76%1.1% cancelled
- Sunday73%2.4% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)45%
- Late-arriving aircraft30%
- Air traffic control & airport congestion20%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)59%
- Extreme weather38%
- Air traffic control & airport congestion3%
- Security0%
ATL to LAS: common questions
- How often are ATL to LAS flights on time?
- 76% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Atlanta to Las Vegas cancelled?
- 0.8% of scheduled flights were cancelled (39 of 4,773).
- How long are typical delays?
- Across all flights the average arrival delay was 16 min (early arrivals count as zero). Flights that were late arrived 61 min behind schedule on average, and 7.7% of flights were an hour or more late.
- How long is taxi time at ATL?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAS to ATL — 85% on time
More flights from Atlanta
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ATL → LAS, nonstop flights by US airlines that report to the DOT. How we calculate this.