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Route on-time record

SLC to MIA: most on-time flights and the best time to fly

Salt Lake City (Salt Lake City International Airport) to Miami (Miami International Airport). 755 nonstop flights in Jun 2025 to May 2026, 84% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was Delta 2040 at 11:14 PM.

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

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SLC → MIA

Salt Lake City to Miami: 755 nonstop flights a year

On time (12 months)

84%

Cancelled

0.9%

avg delay 10 min

Best time to leave

After 9 PM

86% on time vs 79% noon to 3 PM

Most reliable airline

Delta

87% chance on time

Check SLC to MIA fares

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 · Delta 2040

    11:14 PM → 5:45 AM4h 31m nonstop

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

    87%

    chance on time

    On time (history)
    88%
    Cancelled
    0.5%
    Avg arrival delay
    6 min
    • Arrived on time 88% of the time (361 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (After 9 PM: 86% on time; Noon to 3 PM: 79%).

    Strong track record · 361 flights

    Find Delta 2040 fares Opens this date on Aviasales

  2. #2 · American 3070

    11:55 PM → 6:32 AM4h 37m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 1232; its record covers all of them.

    80%

    chance on time

    On time (history)
    80%
    Cancelled
    0.0%
    Avg arrival delay
    7 min
    • Arrived on time 80% of the time (54 flights, Jun 2025 to May 2026).
    • Never cancelled in 54 scheduled flights.
    • Leaves in this route's most on-time window (After 9 PM: 86% on time; Noon to 3 PM: 79%).

    Limited track record · 54 flights

    Find American 3070 fares Opens this date on Aviasales

  3. #3 · American 483

    1:56 PM → 8:41 PM4h 45m nonstop

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

    77%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (Noon to 3 PM: 79% on time; After 9 PM: 86%).

    Limited track record · 8 flights

    Find American 483 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Delta Air Lines87%

    364 flights · 88% on time as flown · 0.7% cancel

  • American Airlines81%

    391 flights · 82% on time as flown · 1.2% cancel

On time by departure time

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

  • Noon to 3 PM79%

    118 flights · avg delay 17 min

  • After 9 PM86%

    637 flights · avg delay 8 min

Best day: Tuesday (87%). Worst: Saturday (76%).

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
75
F
86
M
76
A
81
M
85
J
82
J
75
A
87
S
89
O
88
N
84
D
80

What delays this route

  • Late-arriving aircraft50%
  • Airline (crew, maintenance, boarding)34%
  • Air traffic control and airport volume14%
  • Security1%

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

Finding the most reliable connections from SLC to MIA…

SLC to MIA questions

What time of day is best to fly SLC to MIA?
After 9 PM: 86% of flights arrived on time, against 79% for departures noon to 3 PM.
Which airline is most on time from SLC to MIA?
Delta, with a season-adjusted 87% chance of operating and arriving on time over 364 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 SLC to MIA?
July (75% on time); the best was September (89%), 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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