76% of flights from Las Vegas to Memphis arrived on time over the past 12 months. That is worse than the typical U.S. route. Most reliable airline: Spirit Airlines (96%). 5% of flights arrived more than an hour late or not at all.
How late?
The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for LAS → MEM: when a flight was late, it was under 45 minutes late 74% of the time. About 1 in 24 flights landed an hour or more late, and 1 in 137 three hours or more; 0.5% were cancelled outright.
- On time or early76%
- 15–30 min late11%
- 30–60 min late7.9%
- 1–2 hours late2.7%
- 2–3 hours late0.7%
- 3+ hours late0.7%
- Diverted0.2%
- Cancelled0.5%
Share of all 547 scheduled flights, past 12 months, by arrival time against schedule.
By airline
| Airline | Flights | On time | Cancelled | Typical arrival | 1h+ late | Avg when late | Operated by |
|---|---|---|---|---|---|---|---|
| Southwest Airlines | 316 | 67% | 0.9% | +5 min | 5.1% | +40 min | Southwest Airlines |
| Spirit Airlines | 107 | 96% | 0.0% | −19 min | 1.9% | +71 min | Spirit Airlines |
| Allegiant Air | 105 | 83% | 0.0% | −8 min | 4.8% | +115 min | Allegiant Air |
| Frontier Airlines | 19 | — | — | — | — | — | Frontier Airlines |
Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.
Best time of day to fly
On-time rate by scheduled departure hour (local time at LAS). Delays build through the day as late planes knock on, so early flights usually do best.
By month
Each calendar month pooled over 2023–2026. Best: September (91%). Worst: July (69%).
By day of week
| Day | Flights | On time | Cancelled |
|---|---|---|---|
| Monday | 125 | 79% | 0.0% |
| Tuesday | 57 | — | — |
| Wednesday | 61 | — | — |
| Thursday | 74 | — | — |
| Friday | 121 | 69% | 0.8% |
| Saturday | 31 | — | — |
| Sunday | 78 | — | — |
Why flights were late
Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.
Cancellations: weather 3
Month by month
Not enough months with data to draw a trend.
Worst days in the past year
| Date | Flights | On time | Cancelled |
|---|---|---|---|
| Dec 19, 2025 | 3 | 33% | 0 |
| Dec 29, 2025 | 3 | 67% | 0 |
| Nov 24, 2025 | 3 | 67% | 0 |
| Dec 8, 2025 | 3 | 67% | 0 |
| Oct 24, 2025 | 3 | 67% | 0 |
Questions
How often are flights from LAS to MEM on time?
76% of 547 scheduled flights from Las Vegas, NV to Memphis, TN arrived within 15 minutes of schedule between September 2025 and August 2026. 0.5% were cancelled.
Which airline is most on time from LAS to MEM?
Spirit Airlines: 96% of its 107 flights on the route arrived on time. Southwest Airlines: 67%. Allegiant Air: 83%.
What month has the most delays from LAS to MEM?
July (69% on time). The best month is September (91%), over 2023–2026.
Related
- MEM → LAS (return)
- Las Vegas Harry Reid (LAS) delays by hour
- Flights into Frederick W. Smith (MEM)
- Southwest Airlines on-time record
- Spirit Airlines on-time record
- Allegiant Air on-time record
- Frontier Airlines on-time record
- Connecting off this flight? Check the risk
Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.