Airport month record
DTWJUL
Detroit Metropolitan Wayne County in July 2025
- Departures
- 11,248
- Month
- July 2025
- National, same month
- 71.1%
- Carriers
- 12
Historical statistics for July 2025, not live status or a forecast for this year’s July. For today’s conditions at DTW, see live FAA status.
DTW in July sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 2 points better than the national rate of 71.1%. The late ones land a little over an hour behind schedule. That rests on 11,248 flights, of which Spirit Airlines flew 1,180 at 81.7% on time.
Spirit Airlines is the most reliable of the six carriers covered here at 81.7% on time across 1,180 flights.
Key figures
On time
73.0%
Arrivals under 15 minutes late, of 10,987 completed departures
Avg delay
80 min
Across delayed arrivals only, not all flights
Cancelled
1.97%
Nationally in July: 2.45%
Whole year
76.9%
DTW across all twelve months
These figures cover 11,248 departures from Detroit Metropolitan Wayne County in July 2025. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.
Against the year
July next to DTW's other months
Against DTW's own year, July ran 4 points worse than the twelve-month rate of 76.9%, which makes it number nine of twelve months, best first.
| Month | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| July 2025 (this page) | 11,248 | 73.0% | 80 min | 1.97% | C |
| August 2025 | 10,916 | 81.3% | 68 min | 0.58% | B+ |
| September 2025 | 10,014 | 87.1% | 67 min | 0.19% | A+ |
| October 2025 | 10,950 | 85.3% | 66 min | 0.27% | A+ |
| November 2025 | 9,887 | 78.4% | 78 min | 2.59% | B |
| December 2025 | 9,934 | 62.0% | 87 min | 2.52% | D |
| January 2026 | 9,518 | 64.8% | 83 min | 3.92% | D− |
| February 2026 | 9,122 | 75.7% | 77 min | 2.13% | B |
| March 2026 | 10,701 | 71.6% | 87 min | 4.02% | C− |
| April 2026 | 10,417 | 81.1% | 65 min | 1.27% | B |
| May 2026 | 10,112 | 80.9% | 68 min | 1.27% | B |
| June 2026 | 9,869 | 79.1% | 73 min | 1.43% | B |
Departure window
The best time of day to leave DTW in July
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 33 points, against 12 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am1,623 flights87.4%
- 8am–11am2,702 flights84.8%
- 11am–2pm1,413 flights75.6%
- 2pm–5pm2,197 flights66.5%
- 5pm–8pm1,303 flights54.5%
- 8pm–5am2,010 flights62.1%
Scale runs 45% to 95%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 54.5% on time, against 87.4% 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 8am–11am window is the busiest, with 2,702 flights scheduled in it.
Across the week, Tuesday is the strongest day at 76.8% on time and Monday the weakest at 65.8%. 11 points is a smaller lever than departure hour, but it is free.
Carrier by carrier
Which airlines ran best at DTW in July
The choice of carrier is not cosmetic here. Spirit Airlines arrives on time 81.7% of the time; SkyWest Airlines manages 69.8%. Sample sizes sit next to every figure, because a two-point gap across 2,350 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 5,431 | 72.2% | 74 min | 1.53% | C |
| SkyWest Airlines | 2,350 | 69.8% | 89 min | 0.94% | C+ |
| Spirit Airlines | 1,180 | 81.7% | 83 min | 1.27% | B |
| Republic Airways | 636 | 75.6% | 86 min | 7.39% | B− |
| American Airlines | 460 | 75.6% | 93 min | 1.74% | B |
| Southwest Airlines | 384 | 73.5% | 62 min | 1.56% | C |
| United Airlinesthin sample | 243 | 75.4% | 103 min | 3.29% | B− |
| Frontier Airlinesthin sample | 183 | 72.8% | 49 min | 1.64% | C |
| PSA Airlinesthin sample | 121 | 69.5% | 156 min | 13.22% | C− |
| JetBlue Airwaysthin sample | 113 | 76.2% | 145 min | 7.08% | B− |
| Envoy Airthin sample | 85 | 57.5% | 77 min | 5.88% | D− |
| Alaska Airlinesthin sample | 62 | 70.5% | 57 min | 1.61% | C |
Republic Airways cancels 7.4% 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.
Route by route
Busiest routes out of DTW in July
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DTW to ORD · Chicago | 536 | 67.7% | 90 min | 2.24% | C |
| DTW to ATL · Atlanta | 443 | 69.8% | 77 min | 0.23% | C+ |
| DTW to EWR · Newarkthin sample | 355 | 63.5% | 94 min | 12.68% | D− |
| DTW to LGA · New Yorkthin sample | 338 | 74.2% | 88 min | 8.58% | C− |
| DTW to DFW · Dallas-Fort Worththin sample | 334 | 72.9% | 78 min | 1.50% | C |
| DTW to CLT · Charlottethin sample | 314 | 79.9% | 84 min | 1.59% | B |
| DTW to MCO · Orlandothin sample | 303 | 71.3% | 48 min | 0.66% | C+ |
| DTW to DEN · Denverthin sample | 288 | 73.2% | 83 min | 1.39% | C |
| DTW to PHL · Philadelphiathin sample | 281 | 64.9% | 104 min | 3.56% | D− |
| DTW to LAX · Los Angelesthin sample | 262 | 80.8% | 76 min | 0.38% | B+ |
| DTW to BOS · Bostonthin sample | 250 | 67.4% | 86 min | 4.40% | C− |
| DTW to LAS · Las Vegasthin sample | 249 | 76.9% | 48 min | 0.40% | B+ |
| DTW to DCA · Washingtonthin sample | 239 | 61.1% | 112 min | 8.79% | D− |
| DTW to PHX · Phoenixthin sample | 238 | 75.6% | 98 min | 1.26% | B |
| DTW to SEA · Seattlethin sample | 228 | 76.2% | 54 min | 2.19% | B |
| DTW to BWI · Baltimorethin sample | 219 | 75.8% | 90 min | 1.83% | B |
| DTW to FLL · Fort Lauderdalethin sample | 211 | 75.0% | 93 min | 0.47% | B+ |
| DTW to BNA · Nashvillethin sample | 209 | 73.7% | 69 min | 1.44% | C |
| DTW to IAH · Houstonthin sample | 199 | 80.6% | 70 min | 1.51% | B |
| DTW to MSP · Minneapolisthin sample | 195 | 76.2% | 74 min | 0.00% | B+ |
| DTW to SFO · San Franciscothin sample | 190 | 72.0% | 57 min | 1.58% | C |
| DTW to STL · St. Louisthin sample | 188 | 75.4% | 66 min | 0.53% | B+ |
| DTW to TPA · Tampathin sample | 182 | 76.7% | 59 min | 1.10% | B |
| DTW to SLC · Salt Lake Citythin sample | 167 | 81.9% | 73 min | 0.60% | B+ |
| DTW to MDW · Chicagothin sample | 153 | 70.5% | 78 min | 1.96% | C |
Delay causes
What held DTW up in July
One category carries most of the weight here. Carrier accounts for 46% of the 238,000 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.
- 46%Carrier
- 23%Late-arriving aircraft
- 21%National Airspace System
- 9%Extreme weather
- 0%Security
The largest share of delay minutes, 46%, 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 109,000 of the 238,000 delay minutes reported here. The split is drawn from 237,995 reported delay minutes.
Cancellations sit at 1.97% against a national 2.45%, which is ordinary. Diversions add another 0.35%.
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.4% of arrivals land a full hour or more behind schedule, against 12.1% 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.
What to do with this
Flying from DTW in July
For a July trip through DTW: expect 73.0% on time and 1.97% cancelled, going by July 2025. The 5am–8am window was the strongest part of the day.
Related
Where to go next
- Detroit Metropolitan Wayne County (DTW), the whole year
- DTW in August81.3%
- DTW in September87.1%
- DTW in October85.3%
- DTW in November78.4%
- DTW in December62.0%
- DTW in January64.8%
- DTW in February75.7%
- DTW in March71.6%
- DTW in April81.1%
- DTW in May80.9%
- DTW in June79.1%
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.