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 84%.

How often are flights delayed from PHL to SLC?

About 22% of flights from PHL to SLC experience delays. 78% 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 79 minutes.

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

With 78% of PHL to SLC flights arriving on time and an average delay of 79 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 78% of the time. The most reliable airline on this route is Delta Air Lines at 84%. The average delay is 79 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated May 2026.

PHL → SLC on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

This route is on time most of the time. About 78% 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 84% on time vs American Airlines at 46%.

Airline Comparison

Delta Air Lines leads at 84% on time; American Airlines trails at 46%.

Accurate?

Good to know

Departing from PHL

79% on time

Expect ~19 min sitting on the taxiway after your gate pushes back. PHL has long runway queues.

TSA is currently ~31 min. Best time: 4 AM (about 5 min).

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 ~7 min right now. Allow at least 60 minutes for a domestic connection.

More about SLC →Connection times at SLC →

Flight cancelled or delayed?

Check what Delta Air Lines owes you — refund rights, action plan, complaint email. Free.

Let us watch your flight

We worry about delays, TSA, weather, and gates so you don't have to.

PHL Airport SLC Airport

Check the return: SLC → PHL

Flying this route?

Enter your flight number for a personalized delay briefing.

Check your flight

Know someone flying soon?

Send them the link — delay data, TSA waits, weather, all free.

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