Route reliability record
PIT→DTW
Pittsburgh to Detroit
- Flights
- 1,007
- Period
- July 2025 to June 2026
- Distance
- 201 mi
- Carriers
- 3
This route lands a B+, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 1,007 PIT to DTW flights, with a median arrival 9 minutes early.
Best time to fly PIT to DTW: a 5am–8am departure, ideally on a Saturday. Flights in that window arrived on time 85.5% of the time and Saturday flights 86.2%, against 80.3% for the route overall.
The US average over the same twelve months is 77.6%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
80.3%
Arrivals under 15 minutes late, of 997 completed flights
Avg delay
96 min
Across delayed arrivals only, not all flights
Cancelled
0.99%
National rate is 1.81%
Best carrier
SkyWest
77.6% on time across 539 flights
These figures cover 1,007 flights between July 2025 and June 2026. Beyond the headline rate, 9.5% 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.
Carrier by carrier
Which airline is most reliable on PIT to DTW
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Linesthin sample | 125 | 83.7% | 59 min | 1.60% | B |
| Republic Airwaysthin sample | 343 | 83.5% | 74 min | 1.17% | B |
| SkyWest Airlines | 539 | 77.6% | 112 min | 0.74% | B+ |
Departure window
The best time of day to leave
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 1,007 flights.
- 5am–8am211 flights85.5%
- 8am–11am244 flights84.0%
- 11am–2pm—
- 2pm–5pm137 flights79.4%
- 5pm–8pm415 flights75.9%
- 8pm–5am—
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 85.5% of the time, against 75.9% for the evening window. That is 10 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5pm–8pm window is the busiest, with 415 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 34 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
January is the weak month at 60.4% on time, against 94.2% in September. 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. April was the busiest month here, with 118 flights.
Across the week, Saturday is the strongest day at 86.2% on time and Monday the weakest at 71.0%. 15 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
One category carries most of the weight here. Carrier accounts for 45% of the 19,000 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.
- 45%Carrier
- 31%Extreme weather
- 13%National Airspace System
- 11%Late-arriving aircraft
Extreme weather accounts for 31% 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 monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 5.0 times the usual weather exposure. The split is drawn from 18,803 reported delay minutes.
The largest share of delay minutes, 45%, 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 8,484 of the 19,000 delay minutes reported here.
Cancellations sit at 0.99% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here actually costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.5% of arrivals land a full hour or more behind schedule, against 8.1% 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.
At 201 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 runs 78.2% on time across 1,006 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 1,007 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.
Work out the risk of missing a connection in DTW after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 1,007 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 80.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 997 completed flights over 12 months sit behind that.
Common questions
PIT to DTW questions
How often is PIT to DTW delayed?
About one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 19.7% of the 1,007 flights in this analysis, against 22.4% nationally. Delayed flights are late by an hour and a half on average.
How reliable is PIT to DTW compared with the rest of the country?
80.3% of flights arrive on time here against a national 77.6%, a difference of 3 points in its favour. That is worth a B+ on this site's grading scale.
What time of day has the fewest delays on PIT to DTW?
The 5am–8am departure window is the strongest at 85.5% on time. The 5pm–8pm window is the weakest at 75.9%, 10 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are January delays on PIT to DTW?
January is the weakest month at 60.4% on time, compared with 94.2% in September. Across the year that is 34 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- DTW to PIT — the return legseparate record
- Pittsburgh International (PIT) delay statistics
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Delta Air Lines on PIT to DTW83.7%
- Republic Airways on PIT to DTW83.5%
- SkyWest Airlines on PIT to DTW77.6%
- PIT to ORD, a related route78.6%
- ORD to DTW, a related route70.6%
- PIT to LGA, a related route80.9%
- Delta Air Lines on-time record83.7%
- Republic Airways on-time record83.5%
- SkyWest Airlines on-time record77.6%
- How often a connection fails at the major US hubs
- The best time of day to fly, according to 7.04 million flight records
Direction matters. PIT to DTW and DTW to PIT are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.