Flight number record

DL 386

Delta Air Lines · Salt Lake City to New York

Route: SLC → JFK
Departs: 09:30
Flights: 286
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 386, check with Delta Air Lines.

DL 386 earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 286 flights, with a median arrival 13 minutes early.

Set against the rest of the country, DL 386's record is 9 points better than the US average of 77.6%. That gap is worth roughly 87 fewer late arrivals for every thousand flights.

On time

86.3%

Arrivals under 15 minutes late, of 277 completed flights

Avg delay

69 min

Across delayed arrivals only, not all flights

Cancelled

2.10%

National rate is 1.81%

1 hour+ late

4.7%

National rate is 8.1%

These figures cover 286 flights between July 2025 and June 2026. The median arrival is 13 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When DL 386 flies

DL 386 flies SLC to JFK without a single fixed slot. Its most common scheduled departure was 09:30, used on 53 of 286 flights, with 09:25 (50 flights) and 09:59 (45 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:3053 flights18.5%
Departs 09:2550 flights17.5%
Departs 09:5945 flights15.7%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 09:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 386 runs 2 points better at 86.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 386 next to SLC to JFK

Every carrier on SLC to JFK combined arrived on time 82.0% of the time across 1,931 flights, so DL 386 is 4 points ahead of it. Delta flew 1,538 flights on the same city pair under all its flight numbers, including this one, and those ran 83.5% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 5 points.

DL 386 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 386thin sample	286	86.3%	69 min	2.10%	A
All Delta Air Lines on SLC–JFK	1,538	83.5%	68 min	1.63%	B
All carriers on SLC–JFK	1,931	82.0%	76 min	1.92%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 386 quarter by quarter

Quarter by quarter DL 386 held fairly steady: 89.8% in Jul–Sep 2025, 85.6% in Oct–Dec 2025 and 81.6% in Jan–Mar 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights89.8%
Oct–Dec 202592 flights85.6%
Jan–Mar 202690 flights81.6%
Apr–Jun 202612 flights—

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 386 did best on Monday at 92.1% on time and worst on Tuesday at 80.0%. Each day rests on about 41 flights, so a gap of 12 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 386 runs late

One category carries most of the weight here. Carrier accounts for 51% of the 2,626 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
51%
National Airspace System
36%
Late-arriving aircraft
8%
Extreme weather
5%

36% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 955 minutes out of 2,626, against a national NAS share of 21%. The split is drawn from 2,626 delay minutes reported on DL 386.

Cancellations sit at 2.10% against a national 1.81%, which is ordinary. Diversions add another 1.05%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.7% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

At 1,990 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The same number turns up on three other city pairs in the data, including DFW to ATL (23), SMF to DTW (18) and PHX to ATL (12), but none flew often enough under DL 386 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLC to JFK only.

One caution: this is a thin sample. 286 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking DL 386

For a booking, read DL 386 as 86.3% on time with 2.10% cancelled over 286 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures