Route on-time record
CLE to LAS: most on-time flights and the best time to fly
Cleveland (Cleveland Hopkins International Airport) to Las Vegas (Harry Reid International Airport). 975 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was Southwest 1376 at 1:40 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
CLE → LAS
Cleveland to Las Vegas: 975 nonstop flights a year
On time (12 months)
78%
Cancelled
0.9%
avg delay 18 min
Best time to leave
9 AM to noon
83% on time vs 71% 6 to 9 PM
Most reliable airline
Southwest
80% chance on time
Lowest nonstop fare seen in the next two months: $116 (Frontier 1821 on 2026-11-24). 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 1376
1:40 PM → 3:10 PM4h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.0%
- Avg arrival delay
- 20 min
- Arrived on time 76% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Lands inside LAS's trouble window: 51% of its 107 ground stops and delay programs started between 10 AM and 4 PM.
- 69% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 54 flights
Find Southwest 1376 fares Opens this date on Aviasales#2 · Frontier 3231
8:59 AM → 10:27 AM4h 48m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 78%
- Cancelled
- 1.9%
- Avg arrival delay
- 18 min
- Arrived on time 78% of the time (261 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.
- 53% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 261 flights
Find Frontier 3231 fares Opens this date on Aviasales#3 · Frontier 1821
8:50 PM → 10:49 PM4h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.6%
- Avg arrival delay
- 24 min
- Arrived on time 75% of the time (319 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 71% on time; 9 AM to noon: 83%).
- 52% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 319 flights
Find Frontier 1821 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines80%
373 flights · 81% on time as flown · 0.6% cancel
- Frontier Airlines75%
599 flights · 76% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM80%
249 flights · avg delay 16 min
- 9 AM to noon83%
65 flights · avg delay 19 min
- Noon to 3 PM80%
216 flights · avg delay 14 min
- 3 to 6 PM78%
253 flights · avg delay 19 min
- 6 to 9 PM71%
135 flights · avg delay 31 min
- After 9 PM77%
57 flights · avg delay 12 min
Best day: Wednesday (81%). Worst: Sunday (68%).
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 aircraft55%
- Airline (crew, maintenance, boarding)27%
- Air traffic control and airport volume16%
- Severe weather2%
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
CLE to LAS questions
- What time of day is best to fly CLE to LAS?
- 9 AM to noon: 83% of flights arrived on time, against 71% for departures 6 to 9 PM.
- Which airline is most on time from CLE to LAS?
- Southwest, with a season-adjusted 80% chance of operating and arriving on time over 373 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 CLE to LAS?
- February (64% on time); the best was April (85%), 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 CLE
- LAS to CLE (return)
- CLE to ORD 74%
- CLE to ATL 85%
- CLE to EWR 80%
- CLE to MCO 78%
- CLE to LGA 76%
- CLE to DEN 81%
- CLE to CLT 81%
- CLE to BOS 78%
- CLE to DFW 75%
- CLE to DCA 65%
- CLE to FLL 80%
- CLE to MDW 82%
Most on-time flights from CLE on every route →
Live status: FAA delays and ground stops