Flight number record

DL 2734

Delta Air Lines · Cleveland to Atlanta

Route: CLE → ATL
Departs: 06:00
Flights: 359
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2734, check with Delta Air Lines.

DL 2734 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 15 points better than the national rate of 77.6%. When something does go wrong the average delay runs close to two hours. That rests on 359 flights, with a median arrival 16 minutes early.

Set against the rest of the country, DL 2734's record is 15 points better than the US average of 77.6%. That gap is worth roughly 145 fewer late arrivals for every thousand flights.

On time

92.1%

Arrivals under 15 minutes late, of 355 completed flights

Avg delay

122 min

Across delayed arrivals only, not all flights

Cancelled

1.11%

National rate is 1.81%

1 hour+ late

3.7%

National rate is 8.1%

These figures cover 359 flights between July 2025 and June 2026. The median arrival is 16 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 2734 flies

DL 2734 flies CLE to ATL without a single fixed slot. Its most common scheduled departure was 06:00, used on 284 of 359 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:00284 flights79.1%

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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 2734 runs 3 points better at 92.1%. 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 2734 next to CLE to ATL

Every carrier on CLE to ATL combined arrived on time 85.4% of the time across 3,407 flights, so DL 2734 is 7 points ahead of it. Delta flew 2,693 flights on the same city pair under all its flight numbers, including this one, and those ran 89.3% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 11 points.

DL 2734 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2734thin sample	359	92.1%	122 min	1.11%	A
All Delta Air Lines on CLE–ATL	2,693	89.3%	74 min	1.93%	A
All carriers on CLE–ATL	3,407	85.4%	76 min	2.05%	A
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2734 quarter by quarter

DL 2734 did not run the same all year. Its best quarter was Jul–Sep 2025 at 97.8% on time and its weakest Oct–Dec 2025 at 87.0%, a swing of 11 points on roughly 90 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 flights97.8%
Oct–Dec 202592 flights87.0%
Jan–Mar 202690 flights88.6%
Apr–Jun 202685 flights95.3%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2734 ranged from 87.8% on Sunday to 95.7% on Saturday. With about 51 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 2734 runs late

One category carries most of the weight here. Carrier accounts for 86% of the 3,402 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
86%
National Airspace System
10%
Extreme weather
4%

The largest share of delay minutes, 86%, 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 2,924 of the 3,402 delay minutes reported here. The split is drawn from 3,402 delay minutes reported on DL 2734.

Cancellations sit at 1.11% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

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.

The 554 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.

Every one of the 359 flights under DL 2734 in the data flew CLE to ATL. 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. 359 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 2734

For a booking, DL 2734 has one of the better records a US domestic flight can show: 92.1% on time and 1.11% 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