Flight number record

DL 1145

Delta Air Lines · Myrtle Beach to Detroit

Route: MYR → DTW
Departs: 11:29
Flights: 302
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1145, check with Delta Air Lines.

DL 1145 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 10 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 302 flights, with a median arrival 16 minutes early.

Set against the rest of the country, DL 1145's record is 10 points better than the US average of 77.6%. That gap is worth roughly 100 fewer late arrivals for every thousand flights.

On time

87.6%

Arrivals under 15 minutes late, of 299 completed flights

Avg delay

83 min

Across delayed arrivals only, not all flights

Cancelled

0.66%

National rate is 1.81%

1 hour+ late

4.3%

National rate is 8.1%

These figures cover 302 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 1145 flies

DL 1145 flies MYR to DTW without a single fixed slot. Its most common scheduled departure was 11:29, used on 102 of 302 flights, with 11:32 (59 flights) and 13:01 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:29102 flights33.8%
Departs 11:3259 flights19.5%
Departs 13:0136 flights11.9%

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 11:29 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 1145 runs 9 points better at 87.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 1145 next to MYR to DTW

Every carrier on MYR to DTW combined arrived on time 85.6% of the time across 439 flights, so DL 1145 is 2 points ahead of it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 6 points.

DL 1145 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1145thin sample	302	87.6%	83 min	0.66%	A+
All Delta Air Lines on MYR–DTWthin sample	343	88.2%	79 min	1.17%	A
All carriers on MYR–DTW	439	85.6%	86 min	1.37%	A
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1145 quarter by quarter

Quarter by quarter DL 1145 held fairly steady: 88.0% in Jul–Sep 2025, 87.6% in Oct–Dec 2025 and 86.7% in Apr–Jun 2026. A spread of about a point is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights88.0%
Oct–Dec 202591 flights87.6%
Jan–Mar 202628 flights—
Apr–Jun 202691 flights86.7%

Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1145 did best on Tuesday at 95.5% on time and worst on Sunday at 76.7%. Each day rests on about 43 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1145 runs late

One category carries most of the weight here. Carrier accounts for 53% of the 3,077 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
53%
Late-arriving aircraft
44%
National Airspace System
3%

44% 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 3,077 reported delay minutes here, that single category outweighs weather by 44 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 3,077 delay minutes reported on DL 1145.

Cancellations are rare at 0.66%, 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 4.3% 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 636 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.

DL 1145 is not only a MYR to DTW flight. It also flew DTW to MYR (302 flights, 87.3% 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. 302 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 1145
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
DTW to MYRthin sample	302	87.3%	47 min	0.66%	A+

What to do with this

Booking DL 1145

For a booking, DL 1145 has one of the better records a US domestic flight can show: 87.6% on time and 0.66% 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