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

The most reliable airline on the SLC to PHL route is Delta Air Lines, with an on-time arrival rate of 84%.

How often are flights delayed from SLC to PHL?

About 16% of flights from SLC to PHL experience delays. 84% arrive on time.

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

When flights from SLC to PHL are delayed, the average delay is approximately 61 minutes.

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

With 84% of SLC to PHL flights arriving on time and an average delay of 61 minutes when late, a connection under 60 minutes at PHL is risky. We recommend at least 75-90 minutes for domestic connections after this route.

SLC → PHL

SLC (Salt Lake City) to PHL (Philadelphia)

SLC (Salt Lake City) to PHL (Philadelphia) flights arrive on time 84% of the time. The most reliable airline on this route is Delta Air Lines at 84%. The average delay is 61 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated August 2026.

SLC → PHL on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

This route is on time most of the time. About 84% of flights arrive on schedule.

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

Accurate?

Airlines are roughly equal on this route — Delta Air Lines leads slightly at 84% vs American Airlines at 84%.

Airline Comparison

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

Accurate?

Good to know

Departing from SLC

85% on time

Expect ~18 min sitting on the taxiway after your gate pushes back. SLC has long runway queues.

TSA is currently ~6 min. Best time: 4 AM (about 5 min).

More about SLC →

Arriving at PHL

77% on time

When flights into PHL are late, the average delay is 84 minutes. Build buffer if you have ground plans.

If connecting at PHL: TSA is ~11 min right now. Allow at least 60 minutes for a domestic connection.

PHL has a 2.4% cancellation rate — keep the airline app handy for rebooking.

More about PHL →Connection times at PHL →

Flight cancelled or delayed?

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

Flying out of SLC? We'll brief you.

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

SLC Airport PHL Airport

Check the return: PHL → SLC

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 August 2026. Source: Bureau of Transportation Statistics.