Flight number record
DL 379
Delta Air Lines · New York to Fort Myers
- Route
- LGA → RSW
- Departs
- 07:15
- Flights
- 365
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 379, check with Delta Air Lines.
DL 379 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 8 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 365 flights, with a median arrival 8 minutes early.
Set against the rest of the country, DL 379's record is 8 points better than the US average of 77.6%. That gap is worth roughly 82 fewer late arrivals for every thousand flights.
Key figures
On time
85.8%
Arrivals under 15 minutes late, of 345 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
4.93%
National rate is 1.81%
1 hour+ late
3.5%
National rate is 8.1%
These figures cover 365 flights between July 2025 and June 2026. The median arrival is 8 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 379 flies
DL 379 flies LGA to RSW without a single fixed slot. Its most common scheduled departure was 07:15, used on 101 of 365 flights, with 07:00 (71 flights) and 07:10 (65 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 07:15101 flights27.7%
- Departs 07:0071 flights19.5%
- Departs 07:1065 flights17.8%
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 07:15 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 379 runs 4 points worse at 85.8%. 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 379 next to LGA to RSW
Every carrier on LGA to RSW combined arrived on time 74.8% of the time across 904 flights, so DL 379 is 11 points ahead of it. Delta flew 704 flights on the same city pair under all its flight numbers, including this one, and those ran 76.2% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 379 | 365 | 85.8% | 63 min | 4.93% | A− |
| All Delta Air Lines on LGA–RSW | 704 | 76.2% | 80 min | 3.98% | B− |
| All carriers on LGA–RSW | 904 | 74.8% | 77 min | 4.09% | C− |
| Delta Air Lines, whole network | 1,038,570 | 81.6% | 71 min | 1.62% | B |
Across the year
DL 379 quarter by quarter
Quarter by quarter DL 379 held fairly steady: 91.2% in Jul–Sep 2025, 84.6% in Oct–Dec 2025, 83.1% in Jan–Mar 2026 and 83.7% in Apr–Jun 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 flights91.2%
- Oct–Dec 202592 flights84.6%
- Jan–Mar 202690 flights83.1%
- Apr–Jun 202691 flights83.7%
Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, DL 379 did best on Wednesday at 90.4% on time and worst on Monday at 76.1%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 379 runs late
One category carries most of the weight here. Carrier accounts for 45% of the 3,102 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.
- 45%Carrier
- 43%National Airspace System
- 9%Extreme weather
- 3%Late-arriving aircraft
The largest share of delay minutes, 45%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,403 of the 3,102 delay minutes reported here. The split is drawn from 3,102 delay minutes reported on DL 379.
Cancellations run at 4.93%, against 1.81% nationally. That is about one flight in twenty cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.5% 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.
The 1,080 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on one other city pair in the data, including RSW to LGA (225), but none flew often enough under DL 379 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LGA to RSW only.
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 379
For a booking, the cancellation rate is the figure to plan around on DL 379: 4.93% of its 365 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- LGA to RSW, every carrier and departure
- RSW to LGA, the return direction
- Delta Air Lines 2310 on the same route65.2%
- LaGuardia (LGA) delay statistics
- Southwest Florida International (RSW) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- What a cancellation rate actually tells you (and what it hides)
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.