Carrier route record
DLDTW→EWR
Delta Air Lines · Detroit to Newark
- Flights
- 1,612
- Period
- September 2025 to August 2026
- Share of route
- 44%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on DTW to EWR carries a cancellation problem, not just a delay problem: 3.9% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a B− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 1,612 flights. The strongest carrier on the route with a full sample, Republic Airways, flew 1,539 at 81.8% on time.
The US average over the same twelve months is 77.3%, so there is little to separate Delta on DTW to EWR from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
75.4%
Arrivals under 15 minutes late, of 1,548 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
3.91%
National rate is 1.89%
Whole route
77.4%
Every carrier on DTW to EWR, 3,642 flights
These figures cover 1,612 flights between September 2025 and August 2026. Beyond the headline rate, 11.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
Delta against every carrier on DTW to EWR
Delta flew 1,612 of the 3,642 flights on DTW to EWR, about 44% of it. Its 75.4% on time is 2 points worse than the route as a whole, which runs 77.4%. Ranked by on-time rate it is number three of four carriers on the route, where the range runs from United at 91.1% to Spirit at 67.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Republic Airways arrives on time 81.8% of the time; Spirit Airlines manages 67.6%. Sample sizes sit next to every figure, because a two-point gap across 434 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlinesthin sample | 57 | 91.1% | 112 min | 1.75% | A |
| Republic Airways | 1,539 | 81.8% | 75 min | 6.43% | B− |
| Delta Air Lines (this page) | 1,612 | 75.4% | 78 min | 3.91% | B− |
| Spirit Airlines | 434 | 67.6% | 72 min | 8.99% | C− |
Spirit Airlines cancels 9.0% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Flight by flight
Delta flight numbers on DTW to EWR
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When Delta runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 38 points, against 14 points between the best and worst carrier.
- 5am–8am342 flights90.1%
- 8am–11am346 flights82.1%
- 11am–2pm17 flights—
- 2pm–5pm349 flights72.4%
- 5pm–8pm199 flights52.4%
- 8pm–5am359 flights70.5%
Scale runs 45% to 95%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 52.4% on time, against 90.1% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8pm–5am window is the busiest, with 359 flights scheduled in it.
Across the year
Delta on DTW to EWR through the year
December is the weak month at 55.5% on time, against 84.7% in April. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. October was the busiest month here, with 150 flights.
Across the week, Tuesday is the strongest day at 82.9% on time and Sunday the weakest at 69.1%, a spread of 14 points.
Arrival by arrival
How late Delta on DTW to EWR runs when it is late
Delta on DTW to EWR often beats the schedule: 476 of 1,548 completed flights, 31%, arrived 15 minutes or more early. The 381 late arrivals split 101 under half an hour, 105 between 30 and 60 minutes, and 175 an hour or more.
- 15+ min early476 flights30.7%
- Within 15 min691 flights44.6%
- 15–29 min late101 flights6.5%
- 30–59 min late105 flights6.8%
- 1–2 hours late109 flights7.0%
- 2+ hours late66 flights4.3%
Scale runs 0% to 100%.
Share of 1,548 completed flights by arrival against schedule.
53 of 366 late departures made up the time and arrived on time, 14% of them. 68 flights left on time and still arrived late.
The worst days
Worst days for Delta on DTW to EWR
The latest arrival of the period was on 26 December 2025, 11 hours 34 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 |
|---|---|---|
| 26 December 2025 | 11 hours 34 minutes | Carrier |
| 22 May 2026 | 11 hours 17 minutes | Carrier |
| 4 September 2025 | 10 hours 33 minutes | National Airspace System |
| 9 January 2026 | 8 hours 13 minutes | Carrier |
| 27 August 2026 | 5 hours 27 minutes | National Airspace System |
Delay causes
Why Delta runs late on this route
National Airspace System accounts for 43% of the 30,000 delay minutes carriers reported here, and the remaining four split what is left.
- 43%National Airspace System
- 37%Carrier
- 18%Late-arriving aircraft
- 2%Extreme weather
The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 11,000 of the 30,000 delay minutes reported here. The split is drawn from 29,702 reported delay minutes.
43% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 13,000 minutes out of 30,000, against a national NAS share of 21%.
Cancellations run at 3.91%, against 1.89% nationally. That is about one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here costs
11.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 488 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5am–8am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 79.6% on time across 1,612 flights, 4 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 4 points of difference.
The sample behind these figures is 1,612 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking Delta on DTW to EWR
Put together: the delay figures matter less here than the 3.91% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 1,548 completed flights over 12 months sit behind that.
Related
Where to go next
- DTW to EWR, every carrier
- Delta on EWR to DTW, the return leg
- Republic Airways on DTW to EWR81.8%
- Spirit Airlines on DTW to EWR67.6%
- Delta Air Lines network-wide record
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Newark Liberty International (EWR) delay statistics
- The US routes with the most cancellations
- Same route, different airline: where the carrier you pick matters most
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.