Route reliability record
EWR→CHS
Newark to Charleston
- Flights
- 1,321
- Period
- September 2025 to August 2026
- Distance
- 628 mi
- Carriers
- 3
This route 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 1,321 EWR to CHS flights, with a median arrival 9 minutes early.
Best time to fly EWR to CHS: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 91.1% of the time and Tuesday flights 85.5%, against 78.9% for the route overall.
The US average over the same twelve months is 77.3%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
78.9%
Arrivals under 15 minutes late, of 1,277 completed flights
Avg delay
72 min
Across delayed arrivals only, not all flights
Cancelled
3.10%
National rate is 1.89%
Best carrier
United
79.1% on time across 921 flights
These figures cover 1,321 flights between September 2025 and August 2026. Beyond the headline rate, 8.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on EWR to CHS
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 | 921 | 79.1% | 75 min | 2.06% | B |
| Spirit Airlinesthin sample | 235 | 73.9% | 66 min | 5.53% | C− |
Flight by flight
Flights on EWR to CHS
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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.
Best ways to make this trip
The most reliable ways to fly Newark to Charleston
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 3 of the top 4 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. EWR → CHSNewark to Charleston | United Airlines | 77.5% | 79.1% | 2.06% | 5am–8am, Tue | UA 2355 06:45 |
| 2. LGA → CHSNew York to Charleston | Republic Airways | 69.3% | 73.8% | 6.15% | 8am–11am, Tue | — |
| 3. JFK → CHSNew York to Charleston | JetBlue Airways | 68.6% | 72.8% | 5.80% | 5am–8am, Wed | B6 1273 08:10 |
| 4. LGA → CHSNew York to Charleston | Delta Air Lines | 63.4% | 66.6% | 4.81% | 8am–11am, Sat | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 23 points, against half a point between the best and worst carrier.
- 5am–8am380 flights91.1%
- 8am–11am60 flights71.4%
- 11am–2pm162 flights75.0%
- 2pm–5pm327 flights81.1%
- 5pm–8pm28 flights—
- 8pm–5am364 flights68.3%
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 91.1% of the time, against 68.3% for the overnight window. That is 23 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 380 flights scheduled in it.
Explore
Filter EWR to CHS by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On EWR to CHS, the best departure window is 5am–8am at 91.1% on time and the worst is 8pm–5am at 68.3%, a wide gap of 22.8 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am91.1%
- 8–11am71.4%
- 11am–2pm75.0%
- 2–5pm81.1%
- 5–8pm—
- 8pm–5am68.3%
best all US flightsScale 60% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 19 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
December is the weak month at 69.5% on time, against 88.2% in May. 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 140 flights.
Across the week, Tuesday is the strongest day at 85.5% on time and Sunday the weakest at 69.8%, a spread of 16 points.
Delay causes
Why this route gets delayed
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 19,000 reported delay minutes.
- 36%Late-arriving aircraft
- 36%Carrier
- 22%National Airspace System
- 5%Extreme weather
- 1%Security
36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 19,000 reported delay minutes here, that single category outweighs weather by 7 to one. The split is drawn from 19,313 reported delay minutes.
The largest share of delay minutes, 36%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 6,881 of the 19,000 delay minutes reported here.
Cancellations run at 3.10%, against 1.89% nationally. That is about one flight in 30 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 actually costs
8.5% 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 runs 78.9% on time across 1,320 flights, within half a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 1,321 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in CHS after this flight
What to do with this
Booking this route
Put together: the delay figures matter less here than the 3.10% cancellation rate. A late arrival costs you a little over an hour; 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. 1,277 completed flights over 12 months sit behind that.
Common questions
EWR to CHS questions
How often is EWR to CHS delayed?
About one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 21.1% of the 1,321 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
How reliable is EWR to CHS compared with the rest of the country?
78.9% of flights arrive on time here against a national 77.3%, a difference of 2 points in its favour. That is worth a B− on this site's grading scale.
What time of day has the fewest delays on EWR to CHS?
The 5am–8am departure window is the strongest at 91.1% on time. The 8pm–5am window is the weakest at 68.3%, 23 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are December delays on EWR to CHS?
December is the weakest month at 69.5% on time, compared with 88.2% in May. Across the year that is 19 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- CHS to EWR — the return legseparate record
- Newark Liberty International (EWR) delay statistics
- Charleston International (CHS) delay statistics
- Republic Airways on EWR to CHS85.2%
- United Airlines on EWR to CHS79.1%
- Spirit Airlines on EWR to CHS73.9%
- EWR to MCO, a related route77.9%
- ATL to CHS, a related route82.3%
- EWR to ATL, a related route76.9%
- Republic Airways on-time record85.2%
- United Airlines on-time record79.1%
- Spirit Airlines on-time record73.9%
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Direction matters. EWR to CHS and CHS to EWR are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.