Route reliability record

CLT→DTW

Charlotte to Detroit

Flights: 3,535
Period: July 2025 to June 2026
Distance: 500 mi
Carriers: 5

This route lands a B, 5 points better than the national rate of 77.6%. About one flight in six arrive 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 3,535 flights, of which Delta Air Lines flew 1,344 at 88.1% on time.

Set against the rest of the country, this route's record is 5 points better than the US average of 77.6%. That gap is worth roughly 46 fewer late arrivals for every thousand flights.

On time

82.2%

Arrivals under 15 minutes late, of 3,472 completed flights

Avg delay

75 min

Across delayed arrivals only, not all flights

Cancelled

1.64%

National rate is 1.81%

Best carrier

Delta

88.1% on time across 1,344 flights

These figures cover 3,535 flights between July 2025 and June 2026. The median arrival is 10 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.

Carrier by carrier

Which airline is most reliable on CLT to DTW

The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 88.1% of the time; American Airlines manages 78.9%. Sample sizes sit next to every figure, because a two-point gap across 2,074 flights means less than a ten-point one.

On-time performance by carrier on CLT to DTW
Airline	Flights	On time	Avg delay	Cancelled	Grade
PSA Airlinesthin sample	1	100.0%	—	0.00%	A+
Delta Air Lines	1,344	88.1%	84 min	1.34%	A
American Airlines	2,074	78.9%	71 min	1.78%	B
Frontier Airlinesthin sample	30	75.9%	70 min	3.33%	B−
Spirit Airlinesthin sample	86	73.8%	74 min	2.33%	C

Delta leads American by 9 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.

Departure window

The best time of day to leave

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 25 points, against 9 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am559 flights94.0%
8am–11am700 flights90.2%
11am–2pm730 flights83.7%
2pm–5pm272 flights79.5%
5pm–8pm637 flights75.8%
8pm–5am637 flights68.9%

Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 94.0% of the time, against 68.9% for the overnight window. That is 25 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 11am–2pm window is the busiest, with 730 flights scheduled in it.

Across the year

When delays peak on this route

This route's year swings by 16 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.

Darker means more delays. Figures are on-time percentages.September best, July worst

July is the worst month at 73.4% on time, 16 points below September, the best at 89.0%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. October was the busiest month here, with 321 flights.

Across the week, Wednesday is the strongest day at 89.5% on time and Sunday the weakest at 75.4%. 14 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. Late-arriving aircraft accounts for 52% of the 46,000 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.

Late-arriving aircraft
52%
Carrier
33%
National Airspace System
10%
Extreme weather
6%
Security
0%

52% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 46,000 reported delay minutes here, that single category outweighs weather by 9 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 46,059 reported delay minutes.

The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 94.0% on time here.

Cancellations sit at 1.64% against a national 1.81%, which is ordinary. Diversions add another 0.14%.

Connections and stage length

What a delay here actually costs

6.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route are the a little over an hour kind, which a normal layover absorbs.

The 500 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The return leg runs 83.8% on time across 3,537 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.

The sample behind these figures is 3,535 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 this route

Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 89.0% on time and July 73.4%, a swing of 16 points. If the dates move at all, move them out of July before you think about anything else. 3,472 completed flights over 12 months sit behind that.

Common questions

CLT to DTW questions

How often is CLT to DTW delayed?

About one flight in six arrive at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 17.8% of the 3,535 flights in this analysis, against 22.4% nationally. Delayed flights are late by a little over an hour on average.

Which airline is most reliable on CLT to DTW?

Delta Air Lines leads at 88.1% on time across 1,344 flights. American Airlines is at the other end on 78.9%, a gap of 9 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.

What time of day has the fewest delays on CLT to DTW?

The 5am–8am departure window is the strongest at 94.0% on time. The 8pm–5am window is the weakest at 68.9%, 25 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 July delays on CLT to DTW?

July is the weakest month at 73.4% on time, compared with 89.0% in September. Across the year that is 16 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.

Where to go next

Direction matters. CLT to DTW and DTW to CLT are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Updated monthly. How this data is collected.

Key figures