Flight number record
DL 337
Delta Air Lines · Detroit to Orlando
- Route
- DTW → MCO
- Departs
- 14:00
- Flights
- 347
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 337, check with Delta Air Lines.
DL 337 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 347 flights, with a median arrival 4 minutes early.
Key figures
On time
74.8%
Arrivals under 15 minutes late, of 345 completed flights
Avg delay
82 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
8.7%
National rate is 8.3%
These figures cover 347 flights between September 2025 and August 2026. Beyond the headline rate, 8.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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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 132 of 347 flights, with 14:15 (49 flights) and 12:15 (36 flights) next.
- Departs 14:00132 flights38.0%
- Departs 14:1549 flights14.1%
- Departs 12:1536 flights10.4%
Scale runs 0% to 100%.
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 71.9%, and DL 337 runs 3 points better at 74.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 337 next to DTW to MCO
Every carrier on DTW to MCO combined arrived on time 75.4% of the time across 3,600 flights, so DL 337 is about level with it. Delta flew 2,211 flights on the same city pair under all its flight numbers, including this one, and those ran 75.3% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 337thin sample | 347 | 74.8% | 82 min | 0.00% | C+ |
| All Delta Air Lines on DTW–MCO | 2,211 | 75.3% | 73 min | 0.81% | B+ |
| All carriers on DTW–MCO | 3,600 | 75.4% | 74 min | 0.97% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | 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 Jul–Sep 2026 at 63.9%, a swing of 26 points on roughly 69 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 202530 flights83.3%
- Oct–Dec 202578 flights70.5%
- Jan–Mar 202686 flights67.1%
- Apr–Jun 202691 flights90.1%
- Jul–Sep 202662 flights63.9%
Scale runs 55% to 95%.
By weekday, DL 337 did best on Thursday at 83.7% on time and worst on Sunday at 58.3%. Each day rests on about 50 flights, so a gap of 25 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 337 runs when it is late
The 87 late arrivals split 28 under half an hour, 29 between 30 and 60 minutes, and 30 an hour or more.
- 15+ min early70 flights20.3%
- Within 15 min188 flights54.5%
- 15–29 min late28 flights8.1%
- 30–59 min late29 flights8.4%
- 1–2 hours late13 flights3.8%
- 2+ hours late17 flights4.9%
Scale runs 0% to 100%.
Share of 345 completed flights by arrival against schedule.
14 of 71 late departures made up the time and arrived on time, 20% of them. In the other direction, 30 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at MCO.
The worst days
Worst days for DL 337
The latest arrival of the period was on 18 January 2026, 10 hours 16 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 January 2026 | 10 hours 16 minutes | Carrier |
| 7 April 2026 | 8 hours 8 minutes | Carrier |
| 27 October 2025 | 6 hours 1 minute | Carrier |
| 16 December 2025 | 4 hours 12 minutes | Carrier |
| 16 March 2026 | 4 hours | National Airspace System |
Delay causes
Why DL 337 runs late
Carrier accounts for 48% of the 7,156 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Carrier
- 29%National Airspace System
- 23%Late-arriving aircraft
- 0%Extreme weather
The largest share of delay minutes, 48%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,434 of the 7,156 delay minutes reported here. The split is drawn from 7,156 delay minutes reported on DL 337.
Cancellations are rare at 0.00%, below the national 1.89% 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
8.7% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, 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.
The same number turns up on two other city pairs in the data, including MCO to DTW (249) 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 74.8% on time with 0.00% cancelled over 347 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DTW to MCO, every carrier and departure
- MCO to DTW, the return direction
- Delta Air Lines 2555 on the same route91.3%
- Delta Air Lines 1133 on the same route64.2%
- Delta Air Lines 1455 on the same route86.4%
- Delta Air Lines 1747 on the same route72.2%
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Orlando International (MCO) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Connecting flights: how much buffer the data says you need
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.