MIA to SLC flight delays & on-time performance
Nonstop flights from Miami International Airport to Salt Lake City International Airport · 2,088 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at MIA or SLC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Miami (MIA) to Salt Lake City (SLC) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.6% were cancelled, and 7% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (79% on time); American Airlines was the least (75%).
- Departures scheduled around 7am did best (94% on time); around 8pm did worst (67%).
- Tuesday was the most reliable day to fly (89% on time) and Sunday the least (67%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (45%).
Which airline is most on time from MIA to SLC?
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 | 79% | 0.5% | 15 min | 5.2% | 364 |
| American Airlines | 75% | 0.7% | 18 min | 9.3% | 432 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am81%154 flights
- 7am94%70 flights
- 8am88%91 flights
- 9am81%68 flights
- 5pm73%11 flights
- 6pm69%120 flights
- 7pm73%143 flights
- 8pm67%126 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday73%0.9% cancelled
- Tuesday89%2.9% cancelled
- Wednesday87%0.0% cancelled
- Thursday78%0.0% cancelled
- Friday76%0.0% cancelled
- Saturday70%0.0% cancelled
- Sunday67%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)45%
- Late-arriving aircraft35%
- Air traffic control & airport congestion18%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather60%
- Airline (crew, maintenance, cleaning, fueling)40%
- Air traffic control & airport congestion0%
- Security0%
MIA to SLC: common questions
- How often are MIA to SLC flights on time?
- 77% 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 Miami to Salt Lake City cancelled?
- 0.6% of scheduled flights were cancelled (5 of 796).
- How long are typical delays?
- Across all flights the average arrival delay was 17 min (early arrivals count as zero). Flights that were late arrived 66 min behind schedule on average, and 7.5% of flights were an hour or more late.
- How long is taxi time at MIA?
- Flights on this route spent 23 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SLC to MIA — 85% on time
More flights from Miami
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: MIA → SLC, nonstop flights by US airlines that report to the DOT. How we calculate this.