Flight number record

DL 2778

Delta Air Lines · Memphis to Atlanta

Route: MEM → ATL
Departs: 14:21
Flights: 352
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2778, check with Delta Air Lines.

DL 2778 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 about an hour. That rests on 352 flights, with a median arrival 12 minutes early.

Set against the rest of the country, DL 2778's record is 9 points better than the US average of 77.6%. That gap is worth roughly 90 fewer late arrivals for every thousand flights.

On time

86.6%

Arrivals under 15 minutes late, of 350 completed flights

Avg delay

59 min

Across delayed arrivals only, not all flights

Cancelled

0.57%

National rate is 1.81%

1 hour+ late

3.7%

National rate is 8.1%

These figures cover 352 flights between July 2025 and June 2026. The median arrival is 12 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 2778 flies

DL 2778 flies MEM to ATL without a single fixed slot. Its most common scheduled departure was 14:21, used on 52 of 352 flights, with 13:40 (39 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:2152 flights14.8%
Departs 13:4039 flights11.1%

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 14:21 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 2778 runs 14 points better at 86.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 2778 next to MEM to ATL

Every carrier on MEM to ATL combined arrived on time 87.4% of the time across 3,389 flights, so DL 2778 is about level with it. Delta flew 3,306 flights on the same city pair under all its flight numbers, including this one, and those ran 87.9% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 5 points.

DL 2778 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2778thin sample	352	86.6%	59 min	0.57%	A+
All Delta Air Lines on MEM–ATL	3,306	87.9%	90 min	1.94%	A
All carriers on MEM–ATL	3,389	87.4%	89 min	2.01%	A
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2778 quarter by quarter

Quarter by quarter DL 2778 held fairly steady: 86.8% in Jul–Sep 2025, 88.8% in Oct–Dec 2025, 86.0% in Jan–Mar 2026 and 84.5% in Apr–Jun 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights86.8%
Oct–Dec 202589 flights88.8%
Jan–Mar 202687 flights86.0%
Apr–Jun 202684 flights84.5%

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

By weekday, DL 2778 did best on Wednesday at 96.2% on time and worst on Saturday at 76.2%. Each day rests on about 50 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2778 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 55% of the 2,791 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.

Late-arriving aircraft
55%
National Airspace System
25%
Carrier
15%
Extreme weather
5%

55% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 2,791 reported delay minutes here, that single category outweighs weather by 11 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 2,791 delay minutes reported on DL 2778.

Cancellations are rare at 0.57%, below the national 1.81% 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 3.7% 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.

DL 2778 is not only a MEM to ATL flight. It also flew ATL to MEM (352 flights, 87.1% 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. 352 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 2778
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
ATL to MEMthin sample	352	87.1%	46 min	0.57%	A+

What to do with this

Booking DL 2778

For a booking, DL 2778 has one of the better records a US domestic flight can show: 86.6% on time and 0.57% 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures