Flight number record
UA 563
United Airlines · Chicago to Newark
- Route
- ORD → EWR
- Departs
- 07:10
- Flights
- 356
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 563, check with United Airlines.
UA 563 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 55 minutes. That rests on 356 flights, with a median arrival 12 minutes early.
Set against the rest of the country, UA 563's record is 13 points better than the US average of 77.3%. That gap is worth roughly 133 fewer late arrivals for every thousand flights.
Key figures
On time
90.6%
Arrivals under 15 minutes late, of 352 completed flights
Avg delay
53 min
Across delayed arrivals only, not all flights
Cancelled
1.12%
National rate is 1.89%
1 hour+ late
2.6%
National rate is 8.3%
These figures cover 356 flights between September 2025 and August 2026. The median arrival is 12 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When UA 563 flies
UA 563 flies ORD to EWR without a single fixed slot. Its most common scheduled departure was 07:10, used on 241 of 356 flights, with 07:00 (53 flights) and 07:15 (41 flights) next.
- Departs 07:10241 flights67.7%
- Departs 07:0053 flights14.9%
- Departs 07:1541 flights11.5%
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 07:10 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 563 runs level with that at 90.6%. 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 563 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 563 is 21 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 beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 563thin sample | 356 | 90.6% | 53 min | 1.12% | A |
| 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 563 quarter by quarter
UA 563 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Oct–Dec 2025 at 85.6%, a swing of 11 points on roughly 71 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.
- Jul–Sep 202530 flights96.7%
- Oct–Dec 202591 flights85.6%
- Jan–Mar 202682 flights91.1%
- Apr–Jun 202691 flights94.5%
- Jul–Sep 202662 flights88.7%
Scale runs 75% to 100%.
By weekday, UA 563 ranged from 86.3% on Sunday to 96.1% on Wednesday. With about 51 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 563 runs when it is late
UA 563 often beats the schedule: 148 of 352 completed flights, 42%, arrived 15 minutes or more early. The 33 late arrivals split 13 under half an hour, 11 between 30 and 60 minutes, and 9 an hour or more.
- 15+ min early148 flights42.0%
- Within 15 min171 flights48.6%
- 15–29 min late13 flights3.7%
- 30–59 min late11 flights3.1%
- 1–2 hours late6 flights1.7%
- 2+ hours late3 flights0.9%
Scale runs 0% to 100%.
Share of 352 completed flights by arrival against schedule.
9 of 32 late departures made up the time and arrived on time, 28% of them. 10 flights left on time and still arrived late.
The worst days
Worst days for UA 563
The latest arrival of the period was on 24 May 2026, 3 hours 9 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 national airspace system delay.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 24 May 2026 | 3 hours 9 minutes | Carrier |
| 28 July 2026 | 2 hours 13 minutes | National Airspace System |
| 26 January 2026 | 2 hours 5 minutes | Extreme weather |
| 13 September 2025 | 1 hour 49 minutes | National Airspace System |
| 14 December 2025 | 1 hour 48 minutes | National Airspace System |
Delay causes
Why UA 563 runs late
National Airspace System accounts for 46% of the 1,733 delay minutes carriers reported here, and the remaining four split what is left.
- 46%National Airspace System
- 32%Carrier
- 12%Late-arriving aircraft
- 11%Extreme weather
46% 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 791 minutes out of 1,733, against a national NAS share of 21%. The split is drawn from 1,733 delay minutes reported on UA 563.
Cancellations sit at 1.12% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.6% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
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 three other city pairs in the data, including LAX to TPA (4), SFO to STL (3) and PBI to IAH (1), but none flew often enough under UA 563 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. 356 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 563
For a booking, UA 563 has one of the better records a US domestic flight can show: 90.6% on time and 1.12% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- ORD to EWR, every carrier and departure
- EWR to ORD, the return direction
- United Airlines 534 on the same route56.3%
- United Airlines 2301 on the same route76.7%
- 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
- Worst months to fly in the US, ranked by the data
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.