Route on-time record

LAS to TUS: most on-time flights and the best time to fly

Las Vegas (Harry Reid International Airport) to Tucson (Tucson International Airport). 1,357 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 0.4% were cancelled. The most reliable flight number was Southwest 1569 at 7:40 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

LAS → TUS

Las Vegas to Tucson: 1,357 nonstop flights a year

On time (12 months)

77%

Cancelled

0.4%

avg delay 13 min

Best time to leave

Before 9 AM

93% on time vs 63% 6 to 9 PM

Most reliable airline

Frontier

80% chance on time

Check LAS to TUS fares

Lowest nonstop fare seen in the next two months: $337 (Southwest 2511 on 2026-10-18). 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 1569
7:40 AM → 9:00 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 1723; its record covers all of them.
89%
chance on time
On time (history)
91%
Cancelled
0.0%
Avg arrival delay
2 min
- Arrived on time 91% of the time (58 flights, Jun 2025 to May 2026).
- Never cancelled in 58 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 63%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Limited track record · 58 flights
Find Southwest 1569 fares Opens this date on Aviasales
#2 · Frontier 2588
6:45 AM → 8:14 AM1h 29m nonstop
Local times, typical schedule. Last flown 2026-04-13.
85%
chance on time
On time (history)
94%
Cancelled
5.6%
Avg arrival delay
1 min
- Arrived on time 94% of the time (17 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 63%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Short track record (17 flights), so its score leans on the airline's record at this hour.
Limited track record · 17 flights
Find Frontier 2588 fares Opens this date on Aviasales
#3 · Southwest 2140
10:30 AM → 11:55 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-27.
83%
chance on time
On time (history)
88%
Cancelled
0.0%
Avg arrival delay
7 min
- Arrived on time 88% of the time (16 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 2140 fares Opens this date on Aviasales
#4 · Southwest 3766
2:05 PM → 3:35 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2387; its record covers all of them.
81%
chance on time
On time (history)
88%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 88% of the time (16 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 3766 fares Opens this date on Aviasales
#5 · Southwest 1840
4:05 PM → 5:40 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as Southwest 2594; its record covers all of them.
79%
chance on time
On time (history)
88%
Cancelled
0.0%
Avg arrival delay
4 min
- Arrived on time 88% of the time (24 flights, Jun 2025 to May 2026).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find Southwest 1840 fares Opens this date on Aviasales
#6 · Southwest 1780
9:00 PM → 10:20 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-04-01.
74%
chance on time
On time (history)
88%
Cancelled
0.0%
Avg arrival delay
8 min
- Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 1780 fares Opens this date on Aviasales
#7 · Southwest 408
7:30 PM → 8:55 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-05.
74%
chance on time
On time (history)
77%
Cancelled
0.0%
Avg arrival delay
13 min
- Arrived on time 77% of the time (13 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 63% on time; Before 9 AM: 93%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- 82% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 13 flights
Find Southwest 408 fares Opens this date on Aviasales
#8 · Southwest 2824
9:55 PM → 11:20 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 3543; its record covers all of them.
73%
chance on time
On time (history)
74%
Cancelled
0.0%
Avg arrival delay
14 min
- Arrived on time 74% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- 65% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 54 flights
Find Southwest 2824 fares Opens this date on Aviasales
#9 · Southwest 3354
10:55 PM → 12:15 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-04-05.
71%
chance on time
On time (history)
78%
Cancelled
0.0%
Avg arrival delay
14 min
- Arrived on time 78% of the time (9 flights, Jun 2025 to May 2026).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- 85% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (9 flights), so its score leans on the airline's record at this hour.
Limited track record · 9 flights
Find Southwest 3354 fares Opens this date on Aviasales
#10 · Southwest 3900
1:10 PM → 2:40 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 4038; its record covers all of them.
69%
chance on time
On time (history)
65%
Cancelled
0.0%
Avg arrival delay
17 min
- Arrived on time 65% of the time (46 flights, Jun 2025 to May 2026).
- Never cancelled in 46 scheduled flights.
- Departs inside LAS's trouble window: 51% of its 104 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 · 46 flights
Find Southwest 3900 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Frontier Airlines80%
106 flights · 84% on time as flown · 1.0% cancel
Southwest Airlines77%
1,251 flights · 77% on time as flown · 0.3% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM93%
296 flights · avg delay 3 min
9 AM to noon85%
184 flights · avg delay 11 min
Noon to 3 PM78%
204 flights · avg delay 12 min
3 to 6 PM75%
267 flights · avg delay 15 min
6 to 9 PM63%
235 flights · avg delay 22 min
After 9 PM65%
171 flights · avg delay 21 min

Best day: Saturday (84%). Worst: Friday (72%).

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 aircraft64%
Airline (crew, maintenance, boarding)29%
Air traffic control and airport volume7%

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 TUS questions

What time of day is best to fly LAS to TUS?: Before 9 AM: 93% 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 TUS?: Frontier, with a season-adjusted 80% chance of operating and arriving on time over 106 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 TUS?: July (67% on time); the best was November (83%), 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.

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