PHL to SLC flight delays & on-time performance
Nonstop flights from Philadelphia International Airport to Salt Lake City International Airport · 1,927 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PHL or SLC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Philadelphia (PHL) to Salt Lake City (SLC) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 2.1% were cancelled, and 7% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (80% on time); American Airlines was the least (73%).
- Departures scheduled around 7am did best (84% on time); around 7pm did worst (70%).
- Tuesday was the most reliable day to fly (85% on time) and Thursday the least (71%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (48%).
Which airline is most on time from PHL 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 | 80% | 1.2% | 14 min | 5.9% | 598 |
| American Airlines | 73% | 4.5% | 31 min | 9.1% | 220 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am84%364 flights
- 5pm79%14 flights
- 6pm74%274 flights
- 7pm70%148 flights
- 9pm89%10 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday83%3.8% cancelled
- Tuesday85%2.0% cancelled
- Wednesday79%1.0% cancelled
- Thursday71%1.6% cancelled
- Friday77%0.8% cancelled
- Saturday78%2.1% cancelled
- Sunday78%3.1% 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%
- Air traffic control & airport congestion21%
- Late-arriving aircraft21%
- Extreme weather9%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather71%
- Airline (crew, maintenance, cleaning, fueling)24%
- Air traffic control & airport congestion6%
- Security0%
PHL to SLC: common questions
- How often are PHL to SLC flights on time?
- 78% 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 Philadelphia to Salt Lake City cancelled?
- 2.1% of scheduled flights were cancelled (17 of 818).
- How long are typical delays?
- Across all flights the average arrival delay was 19 min (early arrivals count as zero). Flights that were late arrived 80 min behind schedule on average, and 6.8% of flights were an hour or more late.
- How long is taxi time at PHL?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SLC to PHL — 85% on time
More flights from Philadelphia
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PHL → SLC, nonstop flights by US airlines that report to the DOT. How we calculate this.