SLC to MIA flight delays & on-time performance
Nonstop flights from Salt Lake City International Airport to Miami International Airport · 2,088 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SLC or MIA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Salt Lake City (SLC) to Miami (MIA) arrived on time 85% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.6% were cancelled, and 5% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (90% on time); American Airlines was the least (81%).
- Departures scheduled around 10pm did best (93% on time); around 1pm did worst (73%).
- Wednesday was the most reliable day to fly (92% on time) and Friday the least (77%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (48%).
Which airline is most on time from SLC to MIA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 90% | 0.5% | 7 min | 2.2% | 364 |
| American Airlines | 81% | 0.7% | 17 min | 7.7% | 432 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 12am88%55 flights
- 12pm86%37 flights
- 1pm73%92 flights
- 2pm73%30 flights
- 10pm93%86 flights
- 11pm86%495 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday87%1.7% cancelled
- Tuesday91%1.0% cancelled
- Wednesday92%0.9% cancelled
- Thursday81%0.0% cancelled
- Friday77%0.0% cancelled
- Saturday82%0.0% cancelled
- Sunday84%0.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)48%
- Late-arriving aircraft40%
- Air traffic control & airport congestion11%
- Security1%
- Extreme weather0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather60%
- Airline (crew, maintenance, cleaning, fueling)40%
- Air traffic control & airport congestion0%
- Security0%
SLC to MIA: common questions
- How often are SLC to MIA flights on time?
- 85% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Salt Lake City to Miami cancelled?
- 0.6% of scheduled flights were cancelled (5 of 796).
- How long are typical delays?
- Across all flights the average arrival delay was 12 min (early arrivals count as zero). Flights that were late arrived 75 min behind schedule on average, and 5.2% of flights were an hour or more late.
- How long is taxi time at SLC?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MIA to SLC — 77% on time
More flights from Salt Lake City
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SLC → MIA, nonstop flights by US airlines that report to the DOT. How we calculate this.