Carrier route record
UACHS→EWR
United Airlines · Charleston to Newark
- Flights
- 804
- Period
- July 2025 to June 2026
- Share of route
- 59%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with United Airlines.
United on CHS to EWR lands a B, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That is a workable record, not a spotless one. That rests on 804 flights, with a median arrival 8 minutes early.
Set against the rest of the country, United's CHS to EWR record is 6 points better than the US average of 77.6%. That gap is worth roughly 58 fewer late arrivals for every thousand flights.
Key figures
On time
83.4%
Arrivals under 15 minutes late, of 788 completed flights
Avg delay
105 min
Across delayed arrivals only, not all flights
Cancelled
1.99%
National rate is 1.81%
Whole route
78.9%
Every carrier on CHS to EWR, 1,362 flights
These figures cover 804 flights between July 2025 and June 2026. Beyond the headline rate, 8.0% 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
United against every carrier on CHS to EWR
United flew 804 of the 1,362 flights on CHS to EWR, most of the route. Its 83.4% on time is 5 points better than the route as a whole, which runs 78.9%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from United at 83.4% to Spirit at 62.6%. 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 |
|---|---|---|---|---|---|
| United Airlines (this page) | 804 | 83.4% | 105 min | 1.99% | B |
| Republic Airwaysthin sample | 283 | 81.6% | 101 min | 6.71% | B− |
| Spirit Airlinesthin sample | 275 | 62.6% | 83 min | 6.55% | D− |
Flight by flight
United flight numbers on CHS to EWR
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 29 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am278 flights91.1%
- 8am–11am10 flights—
- 11am–2pm307 flights89.1%
- 2pm–5pm34 flights67.6%
- 5pm–8pm139 flights62.5%
- 8pm–5am36 flights67.6%
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 62.5% on time, against 91.1% 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 11am–2pm window is the busiest, with 307 flights scheduled in it.
Across the year
United on CHS to EWR through the year
December is the weak month at 69.9% on time, against 94.6% in September. 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. November was the busiest month here, with 88 flights.
Across the week, Saturday is the strongest day at 89.6% on time and Sunday the weakest at 72.3%. 17 points is a smaller lever than departure hour, but it is free.
Delay causes
Why United runs late on this route
One category carries most of the weight here. National Airspace System accounts for 48% of the 14,000 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.
- 48%National Airspace System
- 26%Late-arriving aircraft
- 24%Carrier
- 2%Extreme weather
48% 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 6,536 minutes out of 14,000, against a national NAS share of 21%. The split is drawn from 13,740 reported delay minutes.
Cancellations sit at 1.99% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
8.0% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, 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. 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 runs 81.7% on time across 802 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 804 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 CHS to EWR
Put together: treat all of this as provisional. 804 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 83.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 788 completed flights over 12 months sit behind that.
Related
Where to go next
- CHS to EWR, every carrier
- United on EWR to CHS, the return leg
- Republic Airways on CHS to EWR81.6%
- Spirit Airlines on CHS to EWR62.6%
- United Airlines network-wide record
- Newark Liberty International (EWR) delay statistics
- The best time of day to fly, according to 7.04 million flight records
- Worst months to fly in the US, ranked by the data
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.