BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SLC→PHL

Salt Lake City, UT (SLC) to Philadelphia, PA (PHL) flight delay odds

82.2% of 833 official scheduled SLC-to-PHL flights arrived on time; 8.6% arrived at least 30 minutes late and 2.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
82.2%arrived on time
8.6%30+ min late
2.4%cancelled
833scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.1%all scheduled flights
120+ minutes late2.0%all scheduled flights
Diverted0.5%did not reach as scheduled
Average arrival+0.9 mincompleted flights

Which departure time was most reliable for SLC to PHL?

Among qualifying SLC-to-PHL departure window results, Early morning had the highest on-time rate: 90.6% of 138 flights. Night was lowest at 77.6% across 245 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning13890.6%3.6%3.6%
Late morning39181.8%10.5%1.3%
Evening5984.7%10.2%5.1%
Night24577.6%8.2%2.9%

Which weekday was most reliable for SLC to PHL?

Among qualifying SLC-to-PHL weekday results, Saturday had the highest on-time rate: 88.9% of 99 flights. Sunday was lowest at 75.4% across 130 flights.

DayFlightsOn time30+ minCancelled
Monday13280.3%9.8%2.3%
Tuesday10887.0%6.5%2.8%
Wednesday10586.7%3.8%1.9%
Thursday12976.0%14.0%2.3%
Friday13084.6%8.5%1.5%
Saturday9988.9%5.1%1.0%
Sunday13075.4%10.8%4.6%

Which airline was most reliable for SLC to PHL?

Among qualifying SLC-to-PHL airline results, American Airlines had the highest on-time rate: 84.1% of 220 flights. Delta Air Lines was lowest at 81.6% across 613 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines61381.6%8.8%1.1%
American Airlines22084.1%8.2%5.9%

Which month was most reliable for SLC to PHL?

Among qualifying SLC-to-PHL month results, May 2026 had the highest on-time rate: 90.2% of 82 flights. November 2025 was lowest at 72.7% across 44 flights.

MonthFlightsOn time30+ minCancelled
July 20259272.8%8.7%6.5%
August 20258686.0%4.7%2.3%
September 20254989.8%4.1%0.0%
October 20254883.3%6.2%0.0%
November 20254472.7%9.1%0.0%
December 20256279.0%6.5%1.6%
January 20265078.0%14.0%4.0%
February 20266779.1%13.4%7.5%
March 20268979.8%13.5%1.1%
April 20268887.5%8.0%0.0%
May 20268290.2%4.9%1.2%
June 20267685.5%10.5%2.6%

What drove SLC to PHL delay minutes?

Airline was the largest recorded SLC-to-PHL delay category, accounting for 57.0% of 9,168 BTS-attributed delay minutes during July 2025–June 2026.

Airline57.0%
Late aircraft24.4%
National airspace18.4%
Weather0.2%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.