Carrier route record
UAEWR→CHS
United Airlines · Newark to Charleston
- Flights
- 921
- Period
- September 2025 to August 2026
- Share of route
- 70%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on EWR to CHS lands a B, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 921 flights, with a median arrival 9 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate United on EWR to CHS from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
79.1%
Arrivals under 15 minutes late, of 900 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
2.06%
National rate is 1.89%
Whole route
78.9%
Every carrier on EWR to CHS, 1,321 flights
These figures cover 921 flights between September 2025 and August 2026. Beyond the headline rate, 8.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
United against every carrier on EWR to CHS
United flew 921 of the 1,321 flights on EWR to CHS, most of the route. Its 79.1% on time is about level with the route as a whole at 78.9%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Republic at 85.2% to Spirit at 73.9%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
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 |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 165 | 85.2% | 59 min | 5.45% | A− |
| United Airlines (this page) | 921 | 79.1% | 75 min | 2.06% | B |
| Spirit Airlinesthin sample | 235 | 73.9% | 66 min | 5.53% | C− |
Flight by flight
United flight numbers on EWR to CHS
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When United runs best on this route
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.
- 5am–8am315 flights91.9%
- 8am–11am—
- 11am–2pm90 flights76.4%
- 2pm–5pm159 flights82.2%
- 5pm–8pm16 flights—
- 8pm–5am341 flights67.4%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 91.9% of the time, against 67.4% for the overnight window. That is 25 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 341 flights scheduled in it.
Across the year
United on EWR to CHS through the year
August is the worst month at 71.6% on time, 21 points below September, the best at 92.1%. 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. August was the busiest month here, with 91 flights.
Across the week, Tuesday is the strongest day at 85.4% on time and Sunday the weakest at 69.9%, a spread of 16 points.
Arrival by arrival
How late United on EWR to CHS runs when it is late
United on EWR to CHS often beats the schedule: 320 of 900 completed flights, 36%, arrived 15 minutes or more early. The 188 late arrivals split 49 under half an hour, 61 between 30 and 60 minutes, and 78 an hour or more.
- 15+ min early320 flights35.6%
- Within 15 min392 flights43.6%
- 15–29 min late49 flights5.4%
- 30–59 min late61 flights6.8%
- 1–2 hours late46 flights5.1%
- 2+ hours late32 flights3.6%
Scale runs 0% to 100%.
Share of 900 completed flights by arrival against schedule.
31 of 187 late departures made up the time and arrived on time, 17% of them. 32 flights left on time and still arrived late.
The worst days
Worst days for United on EWR to CHS
The latest arrival of the period was on 14 June 2026, 10 hours 39 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 June 2026 | 10 hours 39 minutes | Extreme weather |
| 4 January 2026 | 8 hours 55 minutes | Carrier |
| 22 November 2025 | 5 hours 26 minutes | Late-arriving aircraft |
| 19 December 2025 | 5 hours 5 minutes | Late-arriving aircraft |
| 14 December 2025 | 4 hours 34 minutes | Late-arriving aircraft |
Delay causes
Why United runs late on this route
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 14,000 reported delay minutes.
- 41%Late-arriving aircraft
- 34%Carrier
- 17%National Airspace System
- 7%Extreme weather
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 14,000 reported delay minutes here, that single category outweighs weather by 6 to one. The split is drawn from 14,134 reported delay minutes.
The largest share of delay minutes, 34%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,865 of the 14,000 delay minutes reported here.
Cancellations sit at 2.06% against a national 1.89%, which is ordinary. Diversions add another 0.22%.
Connections and stage length
What a delay here costs
8.7% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The 628 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 return leg is a different operation and performs like one: it runs 82.2% on time across 923 flights, 3 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 3 points of difference.
One caution: this is a thin sample. 921 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 United on EWR to CHS
Put together: treat all of this as provisional. 921 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 79.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 900 completed flights over 12 months sit behind that.
Related
Where to go next
- EWR to CHS, every carrier
- United on CHS to EWR, the return leg
- Republic Airways on EWR to CHS85.2%
- Spirit Airlines on EWR to CHS73.9%
- United Airlines network-wide record
- Newark Liberty International (EWR) delay statistics
- Charleston International (CHS) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
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.