Route on-time record
LAS to MEM: most on-time flights and the best time to fly
Las Vegas (Harry Reid International Airport) to Memphis (Memphis International Airport). 638 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was Allegiant 1631 at 3:14 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
LAS → MEM
Las Vegas to Memphis: 638 nonstop flights a year
On time (12 months)
80%
Cancelled
0.5%
avg delay 14 min
Best time to leave
Before 9 AM
95% on time vs 63% 6 to 9 PM
Most reliable airline
Allegiant
83% chance on time
Lowest nonstop fare seen in the next two months: $71 (Allegiant 74 on 2026-11-06). 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 · Allegiant 1631
3:14 PM → 8:33 PM3h 19m nonstop
Local times, typical schedule. Last flown 2026-05-18.
85%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 90 min
- Arrived on time 80% of the time (15 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 107 ground stops and delay programs started between 10 AM and 4 PM.
Limited track record · 15 flights
Find Allegiant 1631 fares Opens this date on Aviasales#2 · Frontier 4496
1:42 PM → 7:06 PM3h 24m nonstop
Local times, typical schedule. Last flown 2026-05-17.
76%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 74% of the time (19 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 107 ground stops and delay programs started between 10 AM and 4 PM.
Limited track record · 19 flights
Find Frontier 4496 fares Opens this date on Aviasales#3 · Southwest 2660
1:25 PM → 6:45 PM3h 20m nonstop
Local times, typical schedule. Last flown 2026-05-29.
69%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 64% of the time (39 flights, Jun 2025 to May 2026).
- Never cancelled in 39 scheduled flights.
- Departs inside LAS's trouble window: 51% of its 107 ground stops and delay programs started between 10 AM and 4 PM.
Limited track record · 39 flights
Find Southwest 2660 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Allegiant Air83%
105 flights · 85% on time as flown · 0.3% cancel
- Southwest Airlines74%
329 flights · 73% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM95%
103 flights · avg delay 2 min
- 9 AM to noon83%
126 flights · avg delay 7 min
- Noon to 3 PM71%
218 flights · avg delay 16 min
- 3 to 6 PM83%
161 flights · avg delay 18 min
- 6 to 9 PM63%
30 flights · avg delay 44 min
Best day: Wednesday (88%). Worst: Sunday (80%).
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)44%
- Late-arriving aircraft30%
- Air traffic control and airport volume26%
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 MEM questions
- What time of day is best to fly LAS to MEM?
- Before 9 AM: 95% of flights arrived on time, against 63% for departures 6 to 9 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 MEM?
- Allegiant, with a season-adjusted 83% chance of operating and arriving on time over 105 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 MEM?
- July (75% on time); the best was September (91%), 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
- MEM 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 ATL 84%
- LAS to SNA 82%
- LAS to SMF 79%
- LAS to BUR 80%
Most on-time flights from LAS on every route →
Live status: FAA delays and ground stops