Flight Check

Best Airline: SLC to PHL

Salt Lake City to Philadelphia — airline reliability comparison

Delta Air Lines is the most reliable airline on the SLC to PHL route with a 83% on-time rate, compared to American Airlines at 81%. Based on 2,032 flights tracked.

This route involves weather-prone airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

Delta Air Lines83%
American Airlines81%

SLC to PHL Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest83%1.0%55m2,032
American AirlinesAAWorst81%6.2%102m386

Route Overview

82%
Overall On-Time
65m
Avg Delay
1.8%
Cancel Rate
2,455
Total Flights
SLC to PHL Route DetailsReturn: PHL to SLC
SLC AirportPHL Airport

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Data last updated October 2026. Source: Bureau of Transportation Statistics.