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Route Reliability

Philadelphia → Salt Lake City

PHL–SLC · 1,927 miles · Philadelphia International Airport to Salt Lake City International Airport

75
Usually Fine
WanderNerd Reliability Score
78%
Arrive within 15 minutes
7 min
Average arrival delay
2.5%
Cancelled
840
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Delta Air Lines79%624 flights
  2. 2.American Airlines73%216 flights

What the data says

Morning-you made the right choice.

PHL–SLC flights departing between 6–9 AM arrived on time 85% of the time, versus 71% between 6–9 PM.

Skip Thursday if you can.

PHL–SLC flights arrived on time 82% of the time on Tuesdays. On Thursdays: 73%.

Delta Air Lines has a slight edge here.

Delta Air Lines arrived on time 79% of the time on this route; American Airlines managed 73%.

Trending in the right direction.

PHL–SLC flights arrived on time 87% of the time over the last three months in the data, compared with 70% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon78%(127 flights)
  • Tue82%(103 flights)
  • Wed79%(106 flights)
  • Thu73%(126 flights)
  • Fri80%(128 flights)
  • Sat77%(101 flights)
  • Sun75%(126 flights)
On-time by departure window
  • 6–9 AM85%(357 flights)
  • 12–3 PM—(2 flights)
  • 3–6 PM72%(18 flights)
  • 6–9 PM71%(431 flights)
  • 9 PM–12 AM—(9 flights)
On-time trend by month
88%
May

Jun 72% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%81
July 202559%85
August 202577%85
September 202585%48
October 202588%48
November 202586%44
December 202556%61
January 202677%47
February 202677%62
March 202681%87
April 202692%88
May 202688%81

Keep nerding

Based on 840 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.