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Route on-time record

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

Tucson (Tucson International Airport) to Las Vegas (Harry Reid International Airport). 1,356 nonstop flights in Jun 2025 to May 2026, 85% arrived within 15 minutes and 0.2% were cancelled. The most reliable flight number was Southwest 2860 at 5:05 AM.

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

TUS → LAS

Tucson to Las Vegas: 1,356 nonstop flights a year

On time (12 months)

85%

Cancelled

0.2%

avg delay 12 min

Best time to leave

Before 9 AM

97% on time vs 76% 6 to 9 PM

Most reliable airline

Southwest

85% chance on time

Check TUS to LAS fares

Lowest nonstop fare seen in the next two months: $153 (Southwest 971 on 2026-10-28). 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. #1 · Southwest 2860

    5:05 AM → 6:30 AM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3128; its record covers all of them.

    94%

    chance on time

    On time (history)
    96%
    Cancelled
    0.9%
    Avg arrival delay
    7 min
    • Arrived on time 96% of the time (112 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 97% on time; 6 to 9 PM: 76%).

    Moderate track record · 112 flights

    Find Southwest 2860 fares Opens this date on Aviasales

  2. #2 · Southwest 4424

    7:50 AM → 9:15 AM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-27.

    94%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (16 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 97% on time; 6 to 9 PM: 76%).
    • Short track record (16 flights), so its score leans on the airline's record at this hour.

    Limited track record · 16 flights

    Find Southwest 4424 fares Opens this date on Aviasales

  3. #3 · Southwest 4349

    7:15 AM → 8:45 AM1h 30m nonstop

    Local times, typical schedule. Last flown 2026-04-04.

    92%

    chance on time

    On time (history)
    92%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 92% of the time (13 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 97% on time; 6 to 9 PM: 76%).
    • Short track record (13 flights), so its score leans on the airline's record at this hour.

    Limited track record · 13 flights

    Find Southwest 4349 fares Opens this date on Aviasales

  4. #4 · Southwest 319

    10:45 AM → 12:15 PM1h 30m nonstop

    Local times, typical schedule. Last flown 2026-04-01.

    90%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
    • Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find Southwest 319 fares Opens this date on Aviasales

  5. #5 · Southwest 1421

    6:35 PM → 8:00 PM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-30.

    90%

    chance on time

    On time (history)
    96%
    Cancelled
    0.0%
    Avg arrival delay
    2 min
    • Arrived on time 96% of the time (24 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 76% on time; Before 9 AM: 97%).
    • Short track record (24 flights), so its score leans on the airline's record at this hour.

    Limited track record · 24 flights

    Find Southwest 1421 fares Opens this date on Aviasales

  6. #6 · Southwest 3214

    9:35 AM → 11:00 AM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 3544; its record covers all of them.

    89%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 89% of the time (38 flights, Jun 2025 to May 2026).
    • Never cancelled in 38 scheduled flights.
    • Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
    • Short track record (38 flights), so its score leans on the airline's record at this hour.

    Limited track record · 38 flights

    Find Southwest 3214 fares Opens this date on Aviasales

  7. #7 · Southwest 147

    4:10 PM → 5:45 PM1h 35m nonstop

    Local times, typical schedule. Last flown 2026-04-01.

    86%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find Southwest 147 fares Opens this date on Aviasales

  8. #8 · Southwest 2541

    4:40 PM → 6:10 PM1h 30m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    79%

    chance on time

    On time (history)
    65%
    Cancelled
    0.0%
    Avg arrival delay
    26 min
    • Arrived on time 65% of the time (23 flights, Jun 2025 to May 2026).
    • 79% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find Southwest 2541 fares Opens this date on Aviasales

  9. #9 · Southwest 428

    3:55 PM → 5:25 PM1h 30m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    78%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    23 min
    • Arrived on time 73% of the time (22 flights, Jun 2025 to May 2026).
    • Short track record (22 flights), so its score leans on the airline's record at this hour.

    Limited track record · 22 flights

    Find Southwest 428 fares Opens this date on Aviasales

  10. #10 · Southwest 4599

    7:35 PM → 9:00 PM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    75%

    chance on time

    On time (history)
    69%
    Cancelled
    0.0%
    Avg arrival delay
    23 min
    • Arrived on time 69% of the time (55 flights, Jun 2025 to May 2026).
    • Never cancelled in 55 scheduled flights.
    • Leaves in this route's least on-time window (6 to 9 PM: 76% on time; Before 9 AM: 97%).
    • 68% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 55 flights

    Find Southwest 4599 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines85%

    1,250 flights · 86% on time as flown · 0.2% cancel

  • Frontier Airlines77%

    106 flights · 73% on time as flown · 0.5% cancel

On time by departure time

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

  • Before 9 AM97%

    364 flights · avg delay 4 min

  • 9 AM to noon88%

    241 flights · avg delay 6 min

  • Noon to 3 PM80%

    256 flights · avg delay 19 min

  • 3 to 6 PM78%

    199 flights · avg delay 16 min

  • 6 to 9 PM76%

    281 flights · avg delay 17 min

Best day: Tuesday (90%). Worst: Friday (77%).

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.

J
85
F
82
M
79
A
81
M
81
J
81
J
80
A
81
S
80
O
84
N
86
D
87

What delays this route

  • Late-arriving aircraft52%
  • Air traffic control and airport volume22%
  • Airline (crew, maintenance, boarding)15%
  • Severe weather11%

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

TUS to LAS questions

What time of day is best to fly TUS to LAS?
Before 9 AM: 97% of flights arrived on time, against 76% 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 TUS to LAS?
Southwest, with a season-adjusted 85% chance of operating and arriving on time over 1,250 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 TUS to LAS?
March (79% on time); the best was December (87%), 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 TUS

Live status: FAA delays and ground stops