Route reliability record
MCO→ORD
Orlando to Chicago
- Flights
- 6,224
- Period
- September 2025 to August 2026
- Distance
- 1,005 mi
- Carriers
- 5
This route 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 77.3%. The late ones land a little over an hour behind schedule. That rests on 6,224 MCO to ORD flights, of which United Airlines flew 2,537 at 74.3% on time.
Best time to fly MCO to ORD: a 5am–8am departure, ideally on a Wednesday. Flights in that window arrived on time 87.8% of the time and Wednesday flights 79.4%, against 71.1% for the route overall.
United Airlines is the most reliable of the five carriers covered here at 74.3% on time across 2,537 flights.
Key figures
On time
71.1%
Arrivals under 15 minutes late, of 6,068 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
1.78%
National rate is 1.89%
Best carrier
United
74.3% on time across 2,537 flights
These figures cover 6,224 flights between September 2025 and August 2026. Beyond the headline rate, 11.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on MCO to ORD
The choice of carrier is not cosmetic here. United Airlines arrives on time 74.3% of the time; Spirit Airlines manages 59.0%. Sample sizes sit next to every figure, because a two-point gap across 462 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines | 2,537 | 74.3% | 82 min | 0.95% | C+ |
| American Airlines | 2,163 | 71.2% | 82 min | 2.08% | C |
| Frontier Airlines | 391 | 69.2% | 91 min | 2.56% | C |
| Southwest Airlines | 671 | 67.6% | 62 min | 1.34% | C |
| Spirit Airlines | 462 | 59.0% | 74 min | 4.98% | D− |
Spirit Airlines cancels 5.0% 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.
Flight by flight
Flights on MCO to ORD
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Best ways to make this trip
The most reliable ways to fly Orlando to Chicago
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 1 of the top 5 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. MCO → ORDOrlando to Chicago | United Airlines | 73.6% | 74.3% | 0.95% | 5am–8am, Wed | UA 2475 12:34 |
| 2. MCO → ORDOrlando to Chicago | American Airlines | 69.7% | 71.2% | 2.08% | 5am–8am, Wed | — |
| 3. MCO → MDWOrlando to Chicago | Southwest Airlines | 68.3% | 69.6% | 1.82% | 5am–8am, Wed | — |
| 4. MCO → ORDOrlando to Chicago | Frontier Airlines | 67.4% | 69.2% | 2.56% | 5am–8am, Tue | — |
| 5. MCO → ORDOrlando to Chicago | Southwest Airlines | 66.7% | 67.6% | 1.34% | 5am–8am, Wed | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
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 32 points, against 15 points between the best and worst carrier.
- 5am–8am870 flights87.8%
- 8am–11am1,199 flights84.3%
- 11am–2pm957 flights79.2%
- 2pm–5pm1,605 flights59.7%
- 5pm–8pm1,256 flights55.7%
- 8pm–5am337 flights67.5%
Scale runs 45% to 95%.
The 5pm–8pm window is where this operation falls apart: 55.7% on time, against 87.8% 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 1,605 flights scheduled in it.
Explore
Filter MCO to ORD by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On MCO to ORD, the best departure window is 5am–8am at 87.8% on time and the worst is 5pm–8pm at 55.7%, a wide gap of 32.1 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am87.8%
- 8–11am84.3%
- 11am–2pm79.2%
- 2–5pm59.7%
- 5–8pm55.7%
- 8pm–5am67.5%
best all US flightsScale 45% to 95%.
Across the year
When delays peak on this route
This route's year swings by 24 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.
September is the best month on the calendar at 84.6% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. March was the busiest month here, with 689 flights.
Across the week, Wednesday is the strongest day at 79.4% on time and Sunday the weakest at 62.8%, a spread of 17 points.
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 138,000 reported delay minutes.
- 38%National Airspace System
- 34%Late-arriving aircraft
- 23%Carrier
- 5%Extreme weather
- 0%Security
34% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 138,000 reported delay minutes here, that single category outweighs weather by 7 to one. The split is drawn from 138,326 reported delay minutes.
38% 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 52,000 minutes out of 138,000, against a national NAS share of 21%.
Cancellations sit at 1.78% against a national 1.89%, which is ordinary. Diversions add another 0.72%.
Connections and stage length
What a delay here actually costs
11.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.
The return leg runs 72.8% on time across 6,220 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 6,224 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.
Work out the risk of missing a connection in ORD after this flight
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 84.6% on time and March 60.2%, a swing of 24 points. If the dates move at all, move them out of March before you think about anything else. 6,068 completed flights over 12 months sit behind that.
Common questions
MCO to ORD questions
How often is MCO to ORD delayed?
Roughly one flight in three arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 28.9% of the 6,224 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
Which airline is most reliable on MCO to ORD?
United Airlines leads at 74.3% on time across 2,537 flights. Spirit Airlines is at the other end on 59.0%, a gap of 15 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 ORD?
The 5am–8am departure window is the strongest at 87.8% on time. The 5pm–8pm window is the weakest at 55.7%, 32 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 March delays on MCO to ORD?
March is the weakest month at 60.2% on time, compared with 84.6% in September. Across the year that is 24 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
- ORD to MCO — the return legseparate record
- Orlando International (MCO) delay statistics
- Chicago O'Hare International (ORD) delay statistics
- United Airlines on MCO to ORD74.3%
- American Airlines on MCO to ORD71.2%
- Frontier Airlines on MCO to ORD69.2%
- Southwest Airlines on MCO to ORD67.6%
- Spirit Airlines on MCO to ORD59.0%
- MCO to ATL, a related route74.9%
- LGA to ORD, a related route66.7%
- MCO to EWR, a related route75.0%
- United Airlines on-time record74.3%
- American Airlines on-time record71.2%
- Frontier Airlines on-time record69.2%
- Same route, different airline: where the carrier you pick matters most
- Why the first flight of the morning is statistically safest
Direction matters. MCO to ORD and ORD to MCO 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.