Route reliability record

MCO→DTW

Orlando to Detroit

Flights: 3,676
Period: July 2025 to June 2026
Distance: 957 mi
Carriers: 4

This route sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 3,676 flights, of which Frontier Airlines flew 428 at 82.7% on time.

Frontier Airlines is the most reliable of the three carriers covered here at 82.7% on time across 428 flights.

On time

73.3%

Arrivals under 15 minutes late, of 3,629 completed flights

Avg delay

71 min

Across delayed arrivals only, not all flights

Cancelled

1.17%

National rate is 1.81%

Best carrier

Frontier

82.7% on time across 428 flights

These figures cover 3,676 flights between July 2025 and June 2026. Beyond the headline rate, 10.2% 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 MCO to DTW

The choice of carrier is not cosmetic here. Frontier Airlines arrives on time 82.7% of the time; Spirit Airlines manages 69.4%. Sample sizes sit next to every figure, because a two-point gap across 950 flights means less than a ten-point one.

On-time performance by carrier on MCO to DTW
Airline	Flights	On time	Avg delay	Cancelled	Grade
Frontier Airlines	428	82.7%	56 min	0.93%	B+
Delta Air Lines	2,170	74.2%	77 min	0.97%	C+
Spirit Airlines	950	69.4%	66 min	1.79%	C
Southwest Airlinesthin sample	128	55.1%	53 min	0.78%	D+

The spread between Frontier and Spirit is 13 points, wide enough that it should decide the booking. On a hundred trips that is 13 more arrivals inside the on-time window.

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 34 points, against 13 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am695 flights90.4%
8am–11am541 flights88.6%
11am–2pm649 flights74.7%
2pm–5pm796 flights65.8%
5pm–8pm490 flights56.2%
8pm–5am505 flights59.8%

Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 56.2% on time, against 90.4% 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 2pm–5pm window is the busiest, with 796 flights scheduled in it.

Across the year

When delays peak on this route

This route's year swings by 31 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, December worst

December is the weak month at 57.7% on time, against 88.3% 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. March was the busiest month here, with 413 flights.

Across the week, Wednesday is the strongest day at 81.5% on time and Sunday the weakest at 66.1%. 15 points is a smaller lever than departure hour, but it is free.

Delay causes

Why this route gets delayed

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 68,000 reported delay minutes.

Late-arriving aircraft
37%
Carrier
35%
National Airspace System
23%
Extreme weather
5%
Security
0%

37% 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 68,000 reported delay minutes here, that single category outweighs weather by 8 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 68,428 reported delay minutes.

The largest share of delay minutes, 35%, 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 24,000 of the 68,000 delay minutes reported here.

Cancellations sit at 1.17% against a national 1.81%, which is ordinary. Diversions add another 0.11%.

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. 10.2% 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.

The 957 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 75.6% on time across 3,680 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 3,676 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 88.3% on time and December 57.7%, a swing of 31 points. If the dates move at all, move them out of December before you think about anything else. 3,629 completed flights over 12 months sit behind that.

Common questions

MCO to DTW questions

How often is MCO to DTW delayed?

About one flight in four arrive at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 26.7% of the 3,676 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 MCO to DTW?

Frontier Airlines leads at 82.7% on time across 428 flights. Spirit Airlines is at the other end on 69.4%, a gap of 13 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 MCO to DTW?

The 5am–8am departure window is the strongest at 90.4% on time. The 5pm–8pm window is the weakest at 56.2%, 34 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 MCO to DTW?

December is the weakest month at 57.7% on time, compared with 88.3% in September. Across the year that is 31 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. MCO to DTW and DTW to MCO 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