Carrier route record

F9MCO→ORD

Frontier Airlines · Orlando to Chicago

Flights: 366
Period: July 2025 to June 2026
Share of route: 6%
Carriers: 5

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.

Frontier on MCO to ORD sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 366 flights. The strongest carrier on the route with a full sample, United Airlines, flew 2,459 at 75.6% on time.

United Airlines is the most reliable of the four carriers covered here at 75.6% on time across 2,459 flights.

On time

72.0%

Arrivals under 15 minutes late, of 357 completed flights

Avg delay

97 min

Across delayed arrivals only, not all flights

Cancelled

2.46%

National rate is 1.81%

Whole route

70.6%

Every carrier on MCO to ORD, 6,350 flights

These figures cover 366 flights between July 2025 and June 2026. Beyond the headline rate, 13.4% 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

Frontier against every carrier on MCO to ORD

Frontier flew 366 of the 6,350 flights on MCO to ORD, about 6% of it. Its 72.0% on time is about level with the route as a whole at 70.6%. Ranked by on-time rate it is number two of five carriers on the route, where the range runs from United at 75.6% to Spirit at 60.0%.

The choice of carrier is not cosmetic here. United Airlines arrives on time 75.6% of the time; Spirit Airlines manages 60.0%. Sample sizes sit next to every figure, because a two-point gap across 583 flights means less than a ten-point one.

On-time performance by carrier on MCO to ORD
Airline	Flights	On time	Avg delay	Cancelled	Grade
United Airlines	2,459	75.6%	81 min	0.85%	B+
Frontier Airlines (this page)	366	72.0%	97 min	2.46%	C
American Airlines	2,142	68.9%	86 min	2.19%	C
Southwest Airlines	800	66.8%	60 min	1.38%	C
Spirit Airlines	583	60.0%	74 min	4.12%	D−

Spirit Airlines cancels 4.1% 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.

Departure window

When Frontier runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 31 points, against 16 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am51 flights92.2%
8am–11am47 flights89.1%
11am–2pm77 flights68.0%
2pm–5pm46 flights63.0%
5pm–8pm32 flights71.9%
8pm–5am113 flights61.7%

Scale runs 55% to 100%. Rows with fewer than 30 flights show a dash.

The 8pm–5am window is where this operation falls apart: 61.7% on time, against 92.2% 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 8pm–5am window is the busiest, with 113 flights scheduled in it.

Across the year

Frontier on MCO to ORD through the year

Jul–Sep 202575 flights75.7%
Oct–Dec 202585 flights75.9%
Jan–Mar 2026109 flights63.2%
Apr–Jun 202697 flights75.5%

Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 72.0% on time across 366 flights.

Frontier on MCO to ORD did not run the same all year. Its best quarter was Oct–Dec 2025 at 75.9% on time and its weakest Jan–Mar 2026 at 63.2%, a swing of 13 points on roughly 92 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Across the week, Tuesday is the strongest day at 88.6% on time and Sunday the weakest at 66.7%. 22 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Frontier runs late on this route

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 9,671 reported delay minutes.

Late-arriving aircraft
36%
National Airspace System
34%
Carrier
19%
Extreme weather
11%

36% 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 9,671 reported delay minutes here, that single category outweighs weather by 3 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 9,671 reported delay minutes.

34% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 3,276 minutes out of 9,671, against a national NAS share of 21%.

Cancellations sit at 2.46% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 13.4% 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 1,005 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 69.5% on time across 365 flights, within 3 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. 366 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.

What to do with this

Booking Frontier on MCO to ORD

Put together: treat all of this as provisional. 366 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 72.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 357 completed flights over 12 months sit behind that.

Where to go next

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.

Key figures