Route reliability record
AVP→ORD
Avoca to Chicago
- Flights
- 842
- Period
- July 2025 to June 2026
- Distance
- 632 mi
- Carriers
- 2
This route sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 842 AVP to ORD flights, with a median arrival 8 minutes early.
Best time to fly AVP to ORD: a 5am–8am departure, ideally on a Saturday. Flights in that window arrived on time 85.4% of the time and Saturday flights 87.3%, against 75.1% for the route overall.
The US average over the same twelve months is 77.6%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
75.1%
Arrivals under 15 minutes late, of 816 completed flights
Avg delay
88 min
Across delayed arrivals only, not all flights
Cancelled
2.61%
National rate is 1.81%
Best carrier
Envoy
75.7% on time across 662 flights
These figures cover 842 flights between July 2025 and June 2026. Beyond the headline rate, 10.8% 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 AVP to ORD
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Envoy Air | 662 | 75.7% | 70 min | 2.57% | B |
| SkyWest Airlinesthin sample | 180 | 72.8% | 150 min | 2.78% | C |
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 half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am404 flights85.4%
- 8am–11am1 flights—
- 11am–2pm—
- 2pm–5pm187 flights71.7%
- 5pm–8pm250 flights60.8%
- 8pm–5am—
Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 60.8% on time, against 85.4% 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 5am–8am window is the busiest, with 404 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 29 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.
December is the weak month at 57.7% on time, against 87.0% in February. 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. May was the busiest month here, with 120 flights.
Across the week, Saturday is the strongest day at 87.3% on time and Sunday the weakest at 67.5%. 20 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 18,000 reported delay minutes.
- 39%Late-arriving aircraft
- 31%National Airspace System
- 21%Carrier
- 8%Extreme weather
39% 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 18,000 reported delay minutes here, that single category outweighs weather by 5 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 17,919 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 85.4% on time here.
Cancellations run at 2.61%, against 1.81% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
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. 10.8% 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 632 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 72.9% on time across 842 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.
One caution: this is a thin sample. 842 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.
Work out the risk of missing a connection in ORD after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 842 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 75.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 816 completed flights over 12 months sit behind that.
Common questions
AVP to ORD questions
How often is AVP to ORD delayed?
About one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 24.9% of the 842 flights in this analysis, against 22.4% nationally. Delayed flights are late by an hour and a half on average.
How reliable is AVP to ORD compared with the rest of the country?
75.1% of flights arrive on time here against a national 77.6%, a difference of 3 points against it. That is worth a B on this site's grading scale.
What time of day has the fewest delays on AVP to ORD?
The 5am–8am departure window is the strongest at 85.4% on time. The 5pm–8pm window is the weakest at 60.8%, 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 December delays on AVP to ORD?
December is the weakest month at 57.7% on time, compared with 87.0% in February. Across the year that is 29 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 AVP — the return legseparate record
- Chicago O'Hare International (ORD) delay statistics
- Envoy Air on AVP to ORD75.7%
- SkyWest Airlines on AVP to ORD72.8%
- AVP to CLT, a related route87.4%
- LGA to ORD, a related route67.3%
- BOS to ORD, a related route72.7%
- Envoy Air on-time record75.7%
- SkyWest Airlines on-time record72.8%
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Direction matters. AVP to ORD and ORD to AVP are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
Embed AVP to ORD’s on-time badge on your site
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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.