Flight number record

DL 710

Delta Air Lines · New York to Denver

Route: LGA → DEN
Departs: 18:00
Flights: 311
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 710, check with Delta Air Lines.

DL 710 draws a D−. Roughly one flight in two arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 311 flights, with a median arrival 1 minute late.

The national on-time rate over the same period is 77.6%, so DL 710 runs 18 points behind the country as a whole. Across a thousand flights that is about 179 extra late arrivals.

On time

59.7%

Arrivals under 15 minutes late, of 288 completed flights

Avg delay

78 min

Across delayed arrivals only, not all flights

Cancelled

6.43%

National rate is 1.81%

1 hour+ late

18.1%

National rate is 8.1%

These figures cover 311 flights between July 2025 and June 2026. Beyond the headline rate, 18.1% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When DL 710 flies

DL 710 flies LGA to DEN without a single fixed slot. Its most common scheduled departure was 18:00, used on 95 of 311 flights, with 18:29 (78 flights) and 18:10 (34 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 18:0095 flights30.5%
Departs 18:2978 flights25.1%
Departs 18:1034 flights10.9%

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 18:00 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and DL 710 runs 9 points worse at 59.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 710 next to LGA to DEN

Every carrier on LGA to DEN combined arrived on time 70.7% of the time across 4,672 flights, so DL 710 is 11 points behind it. Delta flew 1,036 flights on the same city pair under all its flight numbers, including this one, and those ran 71.3% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 22 points.

DL 710 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 710thin sample	311	59.7%	78 min	6.43%	D−
All Delta Air Lines on LGA–DEN	1,036	71.3%	71 min	4.15%	C−
All carriers on LGA–DEN	4,672	70.7%	69 min	2.93%	C
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 710 quarter by quarter

DL 710 did not run the same all year. Its best quarter was Jan–Mar 2026 at 71.4% on time and its weakest Oct–Dec 2025 at 52.1%, a swing of 19 points on roughly 78 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202579 flights58.6%
Oct–Dec 202577 flights52.1%
Jan–Mar 202677 flights71.4%
Apr–Jun 202678 flights57.3%

Scale runs 45% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, DL 710 did best on Friday at 66.7% on time and worst on Tuesday at 53.8%. Each day rests on about 44 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 710 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 8,993 reported delay minutes.

Carrier
40%
Late-arriving aircraft
32%
National Airspace System
27%
Extreme weather
1%

The largest share of delay minutes, 40%, 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 3,554 of the 8,993 delay minutes reported here. The split is drawn from 8,993 delay minutes reported on DL 710.

Cancellations run at 6.43%, against 1.81% nationally. That is about one flight in fifteen 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 18.1% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

At 1,620 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 one other city pair in the data, including IND to ATL (9), but none flew often enough under DL 710 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LGA to DEN only.

One caution: this is a thin sample. 311 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 710

For a booking, the cancellation rate is the figure to plan around on DL 710: 6.43% of its 311 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.

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