Carrier route record
AAORD→EWR
American Airlines · Chicago to Newark
- Flights
- 737
- 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 ORD to EWR 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, a little over half of flights arrive on time, worth a D− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 737 flights. The strongest carrier on the route with a full sample, Envoy Air, flew 657 at 79.3% on time.
The national on-time rate over the same period is 77.6%, so American on ORD to EWR runs 22 points behind the country as a whole. Across a thousand flights that is about 220 extra late arrivals.
Key figures
On time
55.6%
Arrivals under 15 minutes late, of 709 completed flights
Avg delay
83 min
Across delayed arrivals only, not all flights
Cancelled
3.80%
National rate is 1.81%
Whole route
69.4%
Every carrier on ORD to EWR, 6,044 flights
These figures cover 737 flights between July 2025 and June 2026. Beyond the headline rate, 23.0% 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 ORD to EWR
American flew 737 of the 6,044 flights on ORD to EWR, about 12% of it. Its 55.6% on time is 14 points worse than the route as a whole, which runs 69.4%. Ranked by on-time rate it is number four of five carriers on the route, where the range runs from Envoy at 79.3% to Spirit at 43.2%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Envoy Air arrives on time 79.3% of the time; United Airlines manages 71.3%. Sample sizes sit next to every figure, because a two-point gap across 4,391 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Envoy Air | 657 | 79.3% | 62 min | 5.18% | B− |
| United Airlines | 4,391 | 71.3% | 86 min | 2.37% | C |
| Republic Airwaysthin sample | 102 | 60.2% | 83 min | 7.84% | D− |
| American Airlines (this page) | 737 | 55.6% | 83 min | 3.80% | D− |
| Spirit Airlinesthin sample | 157 | 43.2% | 80 min | 14.65% | F− |
Envoy Air cancels 5.2% 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 42 points, against 8 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am43 flights88.4%
- 8am–11am45 flights63.6%
- 11am–2pm87 flights71.3%
- 2pm–5pm53 flights51.0%
- 5pm–8pm355 flights50.9%
- 8pm–5am154 flights46.6%
Scale runs 40% to 95%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 46.6% on time, against 88.4% 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 5pm–8pm window is the busiest, with 355 flights scheduled in it.
Across the year
American on ORD to EWR through the year
December is the weak month at 33.3% on time, against 67.5% in April. 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. June was the busiest month here, with 150 flights.
Across the week, Tuesday is the strongest day at 69.2% on time and Monday the weakest at 44.6%. 25 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 26,000 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
- 25%National Airspace System
- 23%Carrier
- 4%Extreme weather
- 0%Security
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 26,000 reported delay minutes here, that single category outweighs weather by 11 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 26,036 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 88.4% on time here.
Cancellations run at 3.80%, 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. 23.0% 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 77.8% on time across 735 flights, 22 points above 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. 737 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 ORD to EWR
Put together: the delay figures matter less here than the 3.80% cancellation rate. A late arrival costs you an hour and a half; 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. 709 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to EWR, every carrier
- American on EWR to ORD, the return leg
- Envoy Air on ORD to EWR79.3%
- United Airlines on ORD to EWR71.3%
- Republic Airways on ORD to EWR60.2%
- Spirit Airlines on ORD to EWR43.2%
- American Airlines network-wide record
- Chicago O'Hare International (ORD) delay statistics
- Newark Liberty International (EWR) 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.