Flight number record

DL 1365

Delta Air Lines · Detroit to San Antonio

Route: DTW → SAT
Departs: 20:30
Flights: 359
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1365, check with Delta Air Lines.

DL 1365 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 359 flights, with a median arrival 3 minutes early.

The national on-time rate over the same period is 77.6%, so DL 1365 runs 7 points behind the country as a whole. Across a thousand flights that is about 71 extra late arrivals.

On time

70.5%

Arrivals under 15 minutes late, of 352 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

1.39%

National rate is 1.81%

1 hour+ late

9.7%

National rate is 8.1%

These figures cover 359 flights between July 2025 and June 2026. Beyond the headline rate, 9.7% 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 1365 flies

DL 1365 flies DTW to SAT without a single fixed slot. Its most common scheduled departure was 20:30, used on 69 of 359 flights, with 20:25 (62 flights) and 20:20 (48 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:3069 flights19.2%
Departs 20:2562 flights17.3%
Departs 20:2048 flights13.4%

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 20:30 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 1365 runs level with that at 70.5%. 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 1365 next to DTW to SAT

Every carrier on DTW to SAT combined arrived on time 80.1% of the time across 951 flights, so DL 1365 is 10 points behind it. Delta flew 934 flights on the same city pair under all its flight numbers, including this one, and those ran 80.0% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 11 points.

DL 1365 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1365thin sample	359	70.5%	56 min	1.39%	C
All Delta Air Lines on DTW–SAT	934	80.0%	58 min	0.75%	B+
All carriers on DTW–SAT	951	80.1%	59 min	0.74%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1365 quarter by quarter

DL 1365 did not run the same all year. Its best quarter was Oct–Dec 2025 at 75.9% on time and its weakest Apr–Jun 2026 at 60.9%, a swing of 15 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 flights71.4%
Oct–Dec 202587 flights75.9%
Jan–Mar 202689 flights73.6%
Apr–Jun 202691 flights60.9%

Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1365 did best on Tuesday at 84.3% on time and worst on Sunday at 60.8%. Each day rests on about 51 flights, so a gap of 24 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1365 runs late

One category carries most of the weight here. Carrier accounts for 55% of the 5,848 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
55%
National Airspace System
22%
Late-arriving aircraft
21%
Extreme weather
3%

The largest share of delay minutes, 55%, 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 3,197 of the 5,848 delay minutes reported here. The split is drawn from 5,848 delay minutes reported on DL 1365.

Cancellations sit at 1.39% against a national 1.81%, which is ordinary. Diversions add another 0.56%.

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. 9.7% 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.

The 1,214 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 1365 in the data flew DTW to SAT. 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 1365

For a booking, DL 1365 is one of the weaker ways to fly DTW to SAT: 10 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.

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