Route on-time record
MEM to LAS: most on-time flights and the best time to fly
Memphis (Memphis International Airport) to Las Vegas (Harry Reid International Airport). 638 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was Southwest 2374 at 1:20 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MEM → LAS
Memphis to Las Vegas: 638 nonstop flights a year
On time (12 months)
81%
Cancelled
0.5%
avg delay 14 min
Best time to leave
Before 9 AM
96% on time vs 72% after 9 PM
Most reliable airline
Southwest
80% chance on time
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 · Southwest 2374
1:20 PM → 3:05 PM3h 45m nonstop
Local times, typical schedule. Last flown 2026-05-27.
81%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.0%
- Avg arrival delay
- 25 min
- Arrived on time 81% of the time (16 flights, Jun 2025 to May 2026).
- Lands inside LAS's trouble window: 51% of its 107 ground stops and delay programs started between 10 AM and 4 PM.
Limited track record · 16 flights
Find Southwest 2374 fares Opens this date on Aviasales#2 · Frontier 4495
8:30 PM → 10:22 PM3h 52m nonstop
Local times, typical schedule. Last flown 2026-05-17.
76%
chance on time
- On time (history)
- 63%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 63% of the time (19 flights, Jun 2025 to May 2026).
Limited track record · 19 flights
Find Frontier 4495 fares Opens this date on Aviasales#3 · Southwest 3409
2:30 PM → 4:15 PM3h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 60%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 60% of the time (30 flights, Jun 2025 to May 2026).
- Never cancelled in 30 scheduled flights.
Limited track record · 30 flights
Find Southwest 3409 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines80%
329 flights · 81% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM96%
129 flights · avg delay 4 min
- Noon to 3 PM79%
185 flights · avg delay 13 min
- 3 to 6 PM79%
142 flights · avg delay 12 min
- 6 to 9 PM79%
53 flights · avg delay 24 min
- After 9 PM72%
103 flights · avg delay 31 min
Best day: Saturday (87%). Worst: Friday (78%).
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
- Late-arriving aircraft60%
- Airline (crew, maintenance, boarding)22%
- Air traffic control and airport volume18%
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
MEM to LAS questions
- What time of day is best to fly MEM to LAS?
- Before 9 AM: 96% of flights arrived on time, against 72% for departures after 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 MEM to LAS?
- Southwest, with a season-adjusted 80% chance of operating and arriving on time over 329 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 MEM to LAS?
- July (69% on time); the best was November (88%), 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 MEM
- LAS to MEM (return)
- MEM to ATL 87%
- MEM to ORD 77%
- MEM to DFW 72%
- MEM to CLT 83%
- MEM to DEN 79%
- MEM to DCA 75%
- MEM to IAH 79%
- MEM to DTW 83%
- MEM to LGA 78%
- MEM to MSP 87%
- MEM to HOU 78%
- MEM to MCO 78%
Most on-time flights from MEM on every route →
Live status: FAA delays and ground stops