Flight number record

DL 1700

Delta Air Lines · Atlanta to Memphis

Route: ATL → MEM
Departs: 15:55
Flights: 357
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1700, check with Delta Air Lines.

DL 1700 lands a B, about a point better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That is a workable record, not a spotless one. That rests on 357 flights, with a median arrival 4 minutes early.

On time

78.7%

Arrivals under 15 minutes late, of 352 completed flights

Avg delay

46 min

Across delayed arrivals only, not all flights

Cancelled

1.12%

National rate is 1.81%

1 hour+ late

4.8%

National rate is 8.1%

These figures cover 357 flights between July 2025 and June 2026. The median arrival is 4 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 1700 flies

DL 1700 flies ATL to MEM without a single fixed slot. Its most common scheduled departure was 15:55, used on 36 of 357 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:5536 flights10.1%

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 15:55 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 1700 runs 6 points better at 78.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 1700 next to ATL to MEM

Every carrier on ATL to MEM combined arrived on time 82.3% of the time across 3,388 flights, so DL 1700 is 4 points behind it. Delta flew 3,304 flights on the same city pair under all its flight numbers, including this one, and those ran 82.6% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 3 points.

DL 1700 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1700thin sample	357	78.7%	46 min	1.12%	B
All Delta Air Lines on ATL–MEM	3,304	82.6%	61 min	1.85%	B
All carriers on ATL–MEM	3,388	82.3%	62 min	1.86%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1700 quarter by quarter

DL 1700 did not run the same all year. Its best quarter was Jul–Sep 2025 at 83.7% on time and its weakest Jan–Mar 2026 at 71.4%, a swing of 12 points on roughly 89 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 202592 flights83.7%
Oct–Dec 202589 flights77.3%
Jan–Mar 202688 flights71.4%
Apr–Jun 202688 flights81.8%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1700 did best on Wednesday at 86.0% on time and worst on Monday at 70.6%. Each day rests on about 51 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1700 runs late

One category carries most of the weight here. Carrier accounts for 60% of the 3,473 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
60%
Late-arriving aircraft
28%
National Airspace System
11%
Extreme weather
1%

The largest share of delay minutes, 60%, 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 2,078 of the 3,473 delay minutes reported here. The split is drawn from 3,473 delay minutes reported on DL 1700.

Cancellations sit at 1.12% against a national 1.81%, which is ordinary. Diversions add another 0.28%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.8% 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.

DL 1700 is not only a ATL to MEM flight. It also flew MEM to ATL (348 flights, 80.5% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 357 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.

Other routes flown as DL 1700
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
MEM to ATLthin sample	348	80.5%	84 min	0.86%	B+

What to do with this

Booking DL 1700

For a booking, read DL 1700 as 78.7% on time with 1.12% cancelled over 357 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