Flight number record
UA 2301
United Airlines · Chicago to Newark
- Route
- ORD → EWR
- Departs
- 09:15
- Flights
- 310
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2301, check with United Airlines.
UA 2301 lands a B, level with the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 310 flights, with a median arrival 9 minutes early.
Key figures
On time
76.7%
Arrivals under 15 minutes late, of 305 completed flights
Avg delay
94 min
Across delayed arrivals only, not all flights
Cancelled
1.61%
National rate is 1.89%
1 hour+ late
9.8%
National rate is 8.3%
These figures cover 310 flights between September 2025 and August 2026. Beyond the headline rate, 9.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 2301 flies
UA 2301 flies ORD to EWR without a single fixed slot. Its most common scheduled departure was 09:15, used on 97 of 310 flights, with 08:40 (67 flights) and 09:05 (40 flights) next.
- Departs 09:1597 flights31.3%
- Departs 08:4067 flights21.6%
- Departs 09:0540 flights12.9%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 09:15 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 2301 runs 7 points worse at 76.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 2301 next to ORD to EWR
Every carrier on ORD to EWR combined arrived on time 69.8% of the time across 6,126 flights, so UA 2301 is 7 points ahead of it. United flew 4,415 flights on the same city pair under all its flight numbers, including this one, and those ran 72.0% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2301thin sample | 310 | 76.7% | 94 min | 1.61% | B |
| All United Airlines on ORD–EWR | 4,415 | 72.0% | 89 min | 2.85% | C |
| All carriers on ORD–EWR | 6,126 | 69.8% | 87 min | 3.82% | C− |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2301 quarter by quarter
UA 2301 did not run the same all year. Its best quarter was Jan–Mar 2026 at 82.8% on time and its weakest Oct–Dec 2025 at 65.7%, a swing of 17 points on roughly 78 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.
- Oct–Dec 202567 flights65.7%
- Jan–Mar 202690 flights82.8%
- Apr–Jun 202691 flights80.2%
- Jul–Sep 202662 flights75.0%
Scale runs 55% to 90%.
By weekday, UA 2301 did best on Saturday at 81.4% on time and worst on Sunday at 68.2%. Each day rests on about 44 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2301 runs when it is late
UA 2301 often beats the schedule: 105 of 305 completed flights, 34%, arrived 15 minutes or more early. The 71 late arrivals split 28 under half an hour, 13 between 30 and 60 minutes, and 30 an hour or more.
- 15+ min early105 flights34.4%
- Within 15 min129 flights42.3%
- 15–29 min late28 flights9.2%
- 30–59 min late13 flights4.3%
- 1–2 hours late12 flights3.9%
- 2+ hours late18 flights5.9%
Scale runs 0% to 100%.
Share of 305 completed flights by arrival against schedule.
14 of 62 late departures made up the time and arrived on time, 23% of them. In the other direction, 23 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at EWR.
The worst days
Worst days for UA 2301
The latest arrival of the period was on 12 March 2026, 8 hours 20 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 March 2026 | 8 hours 20 minutes | Carrier |
| 30 March 2026 | 6 hours 26 minutes | Late-arriving aircraft |
| 14 December 2025 | 5 hours 56 minutes | Late-arriving aircraft |
| 14 June 2026 | 4 hours 55 minutes | Late-arriving aircraft |
| 1 August 2026 | 4 hours 48 minutes | Carrier |
Delay causes
Why UA 2301 runs late
Carrier accounts for 43% of the 6,639 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Carrier
- 34%Late-arriving aircraft
- 23%National Airspace System
- 1%Extreme weather
34% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,639 reported delay minutes here, that single category outweighs weather by 34 to one. The split is drawn from 6,639 delay minutes reported on UA 2301.
Cancellations sit at 1.61% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
9.8% 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 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.
The same number turns up on four other city pairs in the data, including EWR to TPA (33), EWR to SAV (28) and STL to EWR (26), but none flew often enough under UA 2301 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to EWR only.
One caution: this is a thin sample. 310 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 UA 2301
For a booking, read UA 2301 as 76.7% on time with 1.61% cancelled over 310 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ORD to EWR, every carrier and departure
- EWR to ORD, the return direction
- United Airlines 563 on the same route90.6%
- United Airlines 534 on the same route56.3%
- United Airlines 1209 on the same route66.5%
- Chicago O'Hare International (ORD) delay statistics
- Newark Liberty International (EWR) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.