Flight number record

DL 1117

Delta Air Lines · San Diego to Salt Lake City

Route: SAN → SLC
Departs: 06:15
Flights: 365
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1117, check with Delta Air Lines.

DL 1117 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 19 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 365 flights, with a median arrival 11 minutes early.

Set against the rest of the country, DL 1117's record is 19 points better than the US average of 77.3%. That gap is worth roughly 186 fewer late arrivals for every thousand flights.

On time

95.9%

Arrivals under 15 minutes late, of 362 completed flights

Avg delay

109 min

Across delayed arrivals only, not all flights

Cancelled

0.82%

National rate is 1.89%

1 hour+ late

1.7%

National rate is 8.3%

These figures cover 365 flights between September 2025 and August 2026. The median arrival is 11 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.

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Schedule

When DL 1117 flies

DL 1117 is scheduled to leave San Diego (SAN) at 06:15 local time and reach Salt Lake City (SLC) at 09:25. That slot held for 336 of the 365 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.

Departs 06:15336 flights92.1%

Scale runs 0% to 100%.

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

A 06:15 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1117 runs 7 points better at 95.9%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

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Against the route

DL 1117 next to SAN to SLC

Every carrier on SAN to SLC combined arrived on time 83.0% of the time across 3,100 flights, so DL 1117 is 13 points ahead of it. Delta flew 1,739 flights on the same city pair under all its flight numbers, including this one, and those ran 88.1% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 15 points.

DL 1117 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1117	365	95.9%	109 min	0.82%	A+
All Delta Air Lines on SAN–SLC	1,739	88.1%	71 min	0.92%	A+
All carriers on SAN–SLC	3,100	83.0%	63 min	0.74%	B+
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 1117 quarter by quarter

Quarter by quarter DL 1117 held fairly steady: 94.5% in Oct–Dec 2025, 100.0% in Jan–Mar 2026, 94.5% in Apr–Jun 2026 and 93.5% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202530 flights—
Oct–Dec 202592 flights94.5%
Jan–Mar 202690 flights100.0%
Apr–Jun 202691 flights94.5%
Jul–Sep 202662 flights93.5%

Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1117 ranged from 88.5% on Friday to 100.0% on Tuesday. With about 52 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late DL 1117 runs when it is late

DL 1117 often beats the schedule: 127 of 362 completed flights, 35%, arrived 15 minutes or more early. The 15 late arrivals split 6 under half an hour, 3 between 30 and 60 minutes, and 6 an hour or more.

15+ min early127 flights35.1%
Within 15 min220 flights60.8%
15–29 min late6 flights1.7%
30–59 min late3 flights0.8%
1–2 hours late1 flights0.3%
2+ hours late5 flights1.4%

Scale runs 0% to 100%.

Share of 362 completed flights by arrival against schedule.

Only 18 of 362 completed flights left 15 minutes late or more, too few to say how often the time is made up.

The worst days

Worst days for DL 1117

The latest arrival of the period was on 12 December 2025, 5 hours 57 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across December, October, August and July, with no single month standing out.

The latest arrivals of DL 1117 in the period
Date	Arrived late by	Largest filed cause
12 December 2025	5 hours 57 minutes	Carrier
29 October 2025	4 hours 49 minutes	Late-arriving aircraft
30 August 2026	4 hours 47 minutes	Extreme weather
19 December 2025	3 hours 57 minutes	Late-arriving aircraft
3 July 2026	2 hours 39 minutes	Carrier

Delay causes

Why DL 1117 runs late

Carrier accounts for 46% of the 1,641 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
46%
Late-arriving aircraft
32%
Extreme weather
17%
National Airspace System
5%

Extreme weather accounts for 17% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.9 times the usual weather exposure. The split is drawn from 1,641 delay minutes reported on DL 1117.

Cancellations are rare at 0.82%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 1.7% land an hour or more behind schedule, against 8.3% 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.

The 626 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.

Every one of the 365 flights under DL 1117 in the data flew SAN to SLC. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 365 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 1117

For a booking, DL 1117 has one of the better records a US domestic flight can show: 95.9% on time and 0.82% cancelled. That is a base rate, not a promise about any single 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures