Which airline is most reliable for PHL (Philadelphia) to SLC (Salt Lake City)?

The most reliable airline on the PHL to SLC route is Delta Air Lines, with an on-time arrival rate of 81%.

How often are flights delayed from PHL to SLC?

About 23% of flights from PHL to SLC experience delays. 77% arrive on time.

What's the average delay on PHL to SLC flights?

When flights from PHL to SLC are delayed, the average delay is approximately 65 minutes.

Is a short connection safe after a PHL to SLC flight?

With 77% of PHL to SLC flights arriving on time and an average delay of 65 minutes when late, a connection under 60 minutes at SLC is risky. We recommend at least 75-90 minutes for domestic connections after this route.

PHL → SLC

PHL (Philadelphia) to SLC (Salt Lake City)

PHL (Philadelphia) to SLC (Salt Lake City) flights arrive on time 77% of the time. The most reliable airline on this route is Delta Air Lines at 81%. The average delay is 65 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated August 2026.

PHL → SLC on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

This route is on time most of the time. About 77% of flights arrive on schedule.

Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Accurate?

Delta Air Lines is significantly more reliable on this route at 81% on time vs American Airlines at 62%.

Airline Comparison

Delta Air Lines leads at 81% on time; American Airlines trails at 62%.

Accurate?

Good to know

Departing from PHL

77% on time

Expect ~20 min sitting on the taxiway after your gate pushes back. PHL has long runway queues.

TSA is currently ~22 min. Best time: 4 AM (about 5 min).

PHL cancels 2.4% of flights — higher than average. Have a backup plan.

More about PHL →

Arriving at SLC

85% on time

When flights into SLC are late, the average delay is 70 minutes. Build buffer if you have ground plans.

If connecting at SLC: TSA is ~8 min right now. Allow at least 60 minutes for a domestic connection.

More about SLC →Connection times at SLC →

Flight cancelled or delayed?

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Flying out of PHL? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

PHL Airport SLC Airport

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