Flight number record

DL 337

Delta Air Lines · Detroit to Orlando

Route: DTW → MCO
Departs: 14:00
Flights: 347
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 337, check with Delta Air Lines.

DL 337 lands a B+, about a point worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 347 flights, with a median arrival 3 minutes early.

On time

76.2%

Arrivals under 15 minutes late, of 344 completed flights

Avg delay

82 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

8.4%

National rate is 8.1%

These figures cover 347 flights between July 2025 and June 2026. Beyond the headline rate, 8.4% 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 337 flies

DL 337 flies DTW to MCO without a single fixed slot. Its most common scheduled departure was 14:00, used on 70 of 347 flights, with 14:15 (49 flights) and 14:05 (39 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:0070 flights20.2%
Departs 14:1549 flights14.1%
Departs 14:0539 flights11.2%

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 14:00 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 337 runs 4 points better at 76.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 337 next to DTW to MCO

Every carrier on DTW to MCO combined arrived on time 75.6% of the time across 3,680 flights, so DL 337 is about level with it. Delta flew 2,170 flights on the same city pair under all its flight numbers, including this one, and those ran 74.6% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 5 points.

DL 337 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 337thin sample	347	76.2%	82 min	0.00%	B+
All Delta Air Lines on DTW–MCO	2,170	74.6%	71 min	0.92%	C+
All carriers on DTW–MCO	3,680	75.6%	73 min	0.95%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 337 quarter by quarter

DL 337 did not run the same all year. Its best quarter was Apr–Jun 2026 at 90.1% on time and its weakest Jan–Mar 2026 at 67.1%, a swing of 23 points on roughly 87 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 flights75.6%
Oct–Dec 202578 flights70.5%
Jan–Mar 202686 flights67.1%
Apr–Jun 202691 flights90.1%

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 337 did best on Wednesday at 85.7% on time and worst on Sunday at 62.5%. Each day rests on about 50 flights, so a gap of 23 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 337 runs late

One category carries most of the weight here. Carrier accounts for 53% of the 6,680 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
25%
National Airspace System
21%
Extreme weather
1%

The largest share of delay minutes, 53%, 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 3,562 of the 6,680 delay minutes reported here. The split is drawn from 6,680 delay minutes reported on DL 337.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

8.4% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.

The 957 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.

The same number turns up on two other city pairs in the data, including MCO to DTW (246) and DTW to RSW (16), but none flew often enough under DL 337 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DTW to MCO only.

One caution: this is a thin sample. 347 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 337

For a booking, read DL 337 as 76.2% on time with 0.00% cancelled over 347 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