SLC to PHX flight delays & on-time performance
Nonstop flights from Salt Lake City International Airport to Phoenix Sky Harbor International Airport · 507 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SLC or PHX 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 Phoenix (PHX) arrived on time 84% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.5% were cancelled, and 5% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (88% on time); Southwest Airlines was the least (79%).
- Departures scheduled around 6am did best (95% on time); around 6pm did worst (66%).
- Saturday was the most reliable day to fly (87% on time) and Thursday the least (81%).
- The largest source of delay minutes was late-arriving aircraft (48%).
Which airline is most on time from SLC to PHX?
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 | 88% | 0.5% | 8 min | 3.6% | 1,709 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 86% | 0.2% | 18 min | 6.6% | 1,209 |
| Envoy AirRegional airline operating American Eagle flights. | 86% | 0.0% | 6 min | 1.6% | 64 |
| American Airlines | 85% | 0.4% | 11 min | 5.6% | 235 |
| Frontier Airlines | 83% | 1.4% | 16 min | 7.5% | 697 |
| Southwest Airlines | 79% | 0.4% | 12 min | 5.5% | 1,861 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am97%128 flights
- 6am95%256 flights
- 7am91%553 flights
- 8am91%455 flights
- 9am93%207 flights
- 10am85%158 flights
- 11am84%701 flights
- 12pm89%495 flights
- 1pm81%90 flights
- 2pm77%215 flights
- 3pm82%569 flights
- 4pm77%146 flights
- 5pm86%493 flights
- 6pm66%310 flights
- 7pm77%194 flights
- 8pm61%161 flights
- 9pm73%323 flights
- 10pm86%320 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday83%0.7% cancelled
- Tuesday87%0.5% cancelled
- Wednesday85%0.4% cancelled
- Thursday81%0.2% cancelled
- Friday84%0.4% cancelled
- Saturday87%0.4% cancelled
- Sunday81%1.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft48%
- Airline (crew, maintenance, cleaning, fueling)38%
- Air traffic control & airport congestion12%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)65%
- Air traffic control & airport congestion19%
- Extreme weather16%
- Security0%
SLC to PHX: common questions
- How often are SLC to PHX flights on time?
- 84% 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 Phoenix cancelled?
- 0.5% of scheduled flights were cancelled (31 of 5,775).
- 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 70 min behind schedule on average, and 5.4% of flights were an hour or more late.
- How long is taxi time at SLC?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PHX to SLC — 83% 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 → PHX, nonstop flights by US airlines that report to the DOT. How we calculate this.