Route on-time record
MIA to SLC: most on-time flights and the best time to fly
Miami (Miami International Airport) to Salt Lake City (Salt Lake City International Airport). 755 nonstop flights in Jun 2025 to May 2026, 75% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was American 483 at 9:35 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MIA → SLC
Miami to Salt Lake City: 755 nonstop flights a year
On time (12 months)
75%
Cancelled
0.9%
avg delay 16 min
Best time to leave
Before 9 AM
85% on time vs 68% 6 to 9 PM
Most reliable airline
American
74% chance on time
Lowest nonstop fare seen in the next two months: $343 (American 2461 on 2026-11-30). 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 · American 483
9:35 AM → 12:53 PM5h 18m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
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).
- Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
Limited track record · 8 flights
Find American 483 fares Opens this date on Aviasales#2 · American 1134
8:36 PM → 11:54 PM5h 18m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 90% of the time (10 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 85%).
- Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
Limited track record · 10 flights
Find American 1134 fares Opens this date on Aviasales#3 · Delta 2021
6:55 AM → 10:21 AM5h 17m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.5%
- Avg arrival delay
- 17 min
- Arrived on time 73% of the time (362 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 68%).
- Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
Strong track record · 362 flights
Find Delta 2021 fares Opens this date on Aviasales#4 · American 1216
7:40 PM → 10:59 PM5h 19m nonstop
Local times, typical schedule. Last flown 2026-05-20.
68%
chance on time
- On time (history)
- 66%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 66% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 85%).
- Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
Limited track record · 44 flights
Find American 1216 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- American Airlines74%
391 flights · 76% on time as flown · 1.2% cancel
- Delta Air Lines73%
364 flights · 73% on time as flown · 0.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM85%
254 flights · avg delay 8 min
- 6 to 9 PM68%
451 flights · avg delay 22 min
Best day: Tuesday (83%). Worst: Sunday (66%).
Smarter routing
Nearby airports that run more on time
FLL → SLC 76% chance on time
Fort Lauderdale Hollywood International Airport to Salt Lake City International Airport · 376 flights a year · 21 mi from your airports · yours: 74%
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
- Airline (crew, maintenance, boarding)49%
- Late-arriving aircraft29%
- Air traffic control and airport volume20%
- 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
MIA to SLC questions
- What time of day is best to fly MIA to SLC?
- Before 9 AM: 85% of flights arrived on time, against 68% 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 MIA to SLC?
- American, with a season-adjusted 74% chance of operating and arriving on time over 391 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 MIA to SLC?
- July (58% on time); the best was October (80%), 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 MIA
- SLC to MIA (return)
- MIA to ATL 73%
- MIA to LGA 67%
- MIA to DFW 73%
- MIA to JFK 71%
- MIA to ORD 71%
- MIA to EWR 72%
- MIA to DCA 75%
- MIA to MCO 72%
- MIA to IAH 76%
- MIA to CLT 78%
- MIA to BOS 69%
- MIA to LAX 75%
Most on-time flights from MIA on every route →
Live status: FAA delays and ground stops