Route reliability record

DTW→CLT

Detroit to Charlotte

Flights: 3,537
Period: July 2025 to June 2026
Distance: 500 mi
Carriers: 5

This route lands a B, 6 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 an hour and a half on average. That is a workable record, not a spotless one. That rests on 3,537 flights, of which American Airlines flew 2,073 at 85.1% on time.

Set against the rest of the country, this route's record is 6 points better than the US average of 77.6%. That gap is worth roughly 62 fewer late arrivals for every thousand flights.

On time

83.8%

Arrivals under 15 minutes late, of 3,474 completed flights

Avg delay

87 min

Across delayed arrivals only, not all flights

Cancelled

1.70%

National rate is 1.81%

Best carrier

American

85.1% on time across 2,073 flights

These figures cover 3,537 flights between July 2025 and June 2026. The median arrival is 13 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 DTW to CLT

The two carriers here are closely matched: 3 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.

On-time performance by carrier on DTW to CLT
Airline	Flights	On time	Avg delay	Cancelled	Grade
PSA Airlinesthin sample	1	100.0%	—	0.00%	A+
American Airlines	2,073	85.1%	94 min	1.83%	A
Spirit Airlinesthin sample	88	83.9%	95 min	1.14%	B
Delta Air Lines	1,345	82.3%	72 min	1.49%	B
Frontier Airlinesthin sample	30	58.6%	172 min	3.33%	D−

No carrier stands out. American tops the table at 85.1%, 3 points clear of the bottom, which is inside the range this kind of sample moves year to year.

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 20 points, against 3 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am882 flights87.9%
8am–11am672 flights89.7%
11am–2pm498 flights87.1%
2pm–5pm692 flights82.4%
5pm–8pm452 flights75.9%
8pm–5am341 flights69.9%

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 89.7% of the time, against 69.9% for the overnight window. That is 20 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 882 flights scheduled in it.

Across the year

When delays peak on this route

This route's year swings by 19 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.October best, December worst

December is the weak month at 71.8% on time, against 91.0% in October. 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 321 flights.

Across the week, Wednesday is the strongest day at 88.7% on time and Sunday the weakest at 76.1%. 13 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 46% of the 49,000 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.

Carrier
46%
Late-arriving aircraft
40%
National Airspace System
12%
Extreme weather
1%
Security
0%

40% 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 49,000 reported delay minutes here, that single category outweighs weather by 30 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 48,876 reported delay minutes.

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 23,000 of the 49,000 delay minutes reported here.

Cancellations sit at 1.70% against a national 1.81%, which is ordinary. Diversions add another 0.08%.

Connections and stage length

What a delay here actually costs

6.5% 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 an hour and a half 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 82.2% on time across 3,535 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 3,537 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. October runs 91.0% on time and December 71.8%, a swing of 19 points. If the dates move at all, move them out of December before you think about anything else. 3,474 completed flights over 12 months sit behind that.

Common questions

DTW to CLT questions

How often is DTW to CLT 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 16.2% of the 3,537 flights in this analysis, against 22.4% nationally. Delayed flights are late by an hour and a half on average.

Which airline is most reliable on DTW to CLT?

American Airlines leads at 85.1% on time across 2,073 flights. Delta Air Lines is at the other end on 82.3%, a gap of 3 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 DTW to CLT?

The 8am–11am departure window is the strongest at 89.7% on time. The 8pm–5am window is the weakest at 69.9%, 20 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 December delays on DTW to CLT?

December is the weakest month at 71.8% on time, compared with 91.0% in October. Across the year that is 19 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. DTW to CLT and CLT to DTW 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