Which airline is most reliable for BOS (Boston) to SLC (Salt Lake City)?

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

How often are flights delayed from BOS to SLC?

About 21% of flights from BOS to SLC experience delays. 79% arrive on time.

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

When flights from BOS to SLC are delayed, the average delay is approximately 73 minutes.

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

With 79% of BOS to SLC flights arriving on time and an average delay of 73 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.

BOS → SLC

BOS (Boston) to SLC (Salt Lake City)

BOS (Boston) to SLC (Salt Lake City) flights arrive on time 79% of the time. The most reliable airline on this route is Delta Air Lines at 81%. The average delay is 73 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated August 2026.

BOS → SLC on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

This route is on time most of the time. About 79% 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 JetBlue Airways at 66%.

Airline Comparison

Delta Air Lines leads at 81% on time; JetBlue Airways trails at 66%.

Accurate?

Good to know

Departing from BOS

77% on time

Expect ~21 min sitting on the taxiway after your gate pushes back. BOS has long runway queues.

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

More about BOS →

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?

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

Flying out of BOS? We'll brief you.

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

BOS Airport SLC Airport

Check the return: SLC → BOS

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.