Carrier route record
AAEWR→ORD
American Airlines · Newark to Chicago
- Flights
- 735
- Period
- July 2025 to June 2026
- Share of route
- 12%
- Carriers
- 5
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with American Airlines.
American on EWR to ORD carries a cancellation problem, not just a delay problem: 3.8% of scheduled flights never operate, against 1.8% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a B− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 735 flights. The strongest carrier on the route with a full sample, Envoy Air, flew 657 at 73.2% on time.
The US average over the same twelve months is 77.6%, so there is little to separate American on EWR to ORD from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.8%
Arrivals under 15 minutes late, of 706 completed flights
Avg delay
108 min
Across delayed arrivals only, not all flights
Cancelled
3.81%
National rate is 1.81%
Whole route
71.5%
Every carrier on EWR to ORD, 6,039 flights
These figures cover 735 flights between July 2025 and June 2026. Beyond the headline rate, 12.2% 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
American against every carrier on EWR to ORD
American flew 735 of the 6,039 flights on EWR to ORD, about 12% of it. Its 77.8% on time is 6 points better than the route as a whole, which runs 71.5%. Ranked by on-time rate it is first of five carriers on the route, where the range runs from American at 77.8% to Republic at 52.8%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The two carriers here are closely matched: 2 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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlines (this page) | 735 | 77.8% | 108 min | 3.81% | B− |
| Envoy Air | 657 | 73.2% | 89 min | 5.48% | C− |
| United Airlines | 4,389 | 71.1% | 76 min | 2.26% | C |
| Spirit Airlinesthin sample | 156 | 53.8% | 102 min | 16.67% | F− |
| Republic Airwaysthin sample | 102 | 52.8% | 82 min | 11.76% | F− |
Envoy Air cancels 5.5% 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 American runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 29 points, against 2 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am444 flights87.9%
- 8am–11am40 flights82.5%
- 11am–2pm6 flights—
- 2pm–5pm41 flights59.0%
- 5pm–8pm204 flights58.5%
- 8pm–5am—
Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 58.5% on time, against 87.9% 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 444 flights scheduled in it.
Across the year
American on EWR to ORD through the year
July is the worst month at 61.5% on time, 26 points below April, the best at 87.3%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. June was the busiest month here, with 150 flights.
Across the week, Tuesday is the strongest day at 83.5% on time and Friday the weakest at 72.4%. 11 points is a smaller lever than departure hour, but it is free.
Delay causes
Why American runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 47% of the 17,000 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.
- 47%Late-arriving aircraft
- 24%National Airspace System
- 22%Carrier
- 8%Extreme weather
47% 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 17,000 reported delay minutes here, that single category outweighs weather by 6 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 16,951 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 87.9% on time here.
Cancellations run at 3.81%, against 1.81% nationally. That is about one flight in 25 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 costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.2% 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 719 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 is a different operation and performs like one: it runs 55.6% on time across 737 flights, 22 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 22 points of difference.
One caution: this is a thin sample. 735 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 American on EWR to ORD
Put together: the delay figures matter less here than the 3.81% cancellation rate. A late arrival costs you close to two hours; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 706 completed flights over 12 months sit behind that.
Related
Where to go next
- EWR to ORD, every carrier
- American on ORD to EWR, the return leg
- Envoy Air on EWR to ORD73.2%
- United Airlines on EWR to ORD71.1%
- Spirit Airlines on EWR to ORD53.8%
- Republic Airways on EWR to ORD52.8%
- American Airlines network-wide record
- Newark Liberty International (EWR) delay statistics
- Chicago O'Hare International (ORD) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.