Flight number record
DL 1433
Delta Air Lines · Minneapolis to Detroit
- Route
- MSP → DTW
- Departs
- 09:00
- Flights
- 363
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1433, check with Delta Air Lines.
DL 1433 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 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 363 flights, with a median arrival 8 minutes early.
Set against the rest of the country, DL 1433's record is 11 points better than the US average of 77.3%. That gap is worth roughly 108 fewer late arrivals for every thousand flights.
Key figures
On time
88.1%
Arrivals under 15 minutes late, of 361 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
0.55%
National rate is 1.89%
1 hour+ late
4.2%
National rate is 8.3%
These figures cover 363 flights between September 2025 and August 2026. The median arrival is 8 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.
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Schedule
When DL 1433 flies
DL 1433 flies MSP to DTW without a single fixed slot. Its most common scheduled departure was 09:00, used on 146 of 363 flights, with 08:55 (81 flights) and 08:59 (54 flights) next.
- Departs 09:00146 flights40.2%
- Departs 08:5581 flights22.3%
- Departs 08:5954 flights14.9%
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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 1433 runs 4 points better at 88.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 1433 next to MSP to DTW
Every carrier on MSP to DTW combined arrived on time 82.7% of the time across 1,884 flights, so DL 1433 is 5 points ahead of it. Delta flew 1,881 flights on the same city pair under all its flight numbers, including this one, and those ran 82.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1433thin sample | 363 | 88.1% | 60 min | 0.55% | A+ |
| All Delta Air Lines on MSP–DTW | 1,881 | 82.8% | 59 min | 0.58% | B+ |
| All carriers on MSP–DTW | 1,884 | 82.7% | 59 min | 0.58% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1433 quarter by quarter
DL 1433 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jul–Sep 2026 at 75.8%, a swing of 24 points on roughly 73 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 flights100.0%
- Oct–Dec 202590 flights86.7%
- Jan–Mar 202690 flights90.9%
- Apr–Jun 202691 flights91.2%
- Jul–Sep 202662 flights75.8%
Scale runs 65% to 100%.
By weekday, DL 1433 ranged from 82.7% on Wednesday to 92.3% on Thursday. With about 52 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 1433 runs when it is late
The 43 late arrivals split 20 under half an hour, 8 between 30 and 60 minutes, and 15 an hour or more.
- 15+ min early85 flights23.5%
- Within 15 min233 flights64.5%
- 15–29 min late20 flights5.5%
- 30–59 min late8 flights2.2%
- 1–2 hours late9 flights2.5%
- 2+ hours late6 flights1.7%
Scale runs 0% to 100%.
Share of 361 completed flights by arrival against schedule.
A late pushback is often recovered here: of 50 departures that left 15 minutes late or more, 17 still arrived on time. 10 flights left on time and still arrived late.
The worst days
Worst days for DL 1433
The latest arrival of the period was on 23 May 2026, 4 hours 6 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 23 May 2026 | 4 hours 6 minutes | Carrier |
| 15 December 2025 | 3 hours 21 minutes | Carrier |
| 1 July 2026 | 3 hours 9 minutes | Extreme weather |
| 14 December 2025 | 2 hours 58 minutes | Carrier |
| 28 August 2026 | 2 hours 19 minutes | Extreme weather |
Delay causes
Why DL 1433 runs late
Carrier accounts for 58% of the 2,587 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Carrier
- 20%Late-arriving aircraft
- 14%Extreme weather
- 8%National Airspace System
Extreme weather accounts for 14% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.3 times the usual weather exposure. The split is drawn from 2,587 delay minutes reported on DL 1433.
Cancellations are rare at 0.55%, below the national 1.89% 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 4.2% land an hour or more behind schedule, against 8.3% 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 528 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.
Every one of the 363 flights under DL 1433 in the data flew MSP to DTW. 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. 363 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 1433
For a booking, DL 1433 has one of the better records a US domestic flight can show: 88.1% on time and 0.55% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- MSP to DTW, every carrier and departure
- DTW to MSP, the return direction
- Delta Air Lines 1461 on the same route93.6%
- Delta Air Lines 1476 on the same route78.8%
- Delta Air Lines 1519 on the same route89.3%
- Delta Air Lines 1484 on the same route66.2%
- Minneapolis-St Paul International (MSP) delay statistics
- Detroit Metropolitan Wayne County (DTW) 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
- Worst months to fly in the US, ranked by the data
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.