Route reliability record
CHS→LGA
Charleston to New York
- Flights
- 1,500
- Period
- September 2025 to August 2026
- Distance
- 641 mi
- Carriers
- 2
This route carries a cancellation problem, not just a delay problem: 6.5% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 1,500 CHS to LGA flights, of which Republic Airways flew 1,105 at 77.8% on time.
Best time to fly CHS to LGA: a 8am–11am departure, ideally on a Saturday. Flights in that window arrived on time 91.9% of the time and Saturday flights 82.8%, against 74.6% 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
74.6%
Arrivals under 15 minutes late, of 1,392 completed flights
Avg delay
119 min
Across delayed arrivals only, not all flights
Cancelled
6.53%
National rate is 1.89%
Best carrier
Republic
77.8% on time across 1,105 flights
These figures cover 1,500 flights between September 2025 and August 2026. Beyond the headline rate, 12.8% 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 CHS to LGA
The choice of carrier is not cosmetic here. Republic Airways arrives on time 77.8% of the time; Delta Air Lines manages 65.9%. Sample sizes sit next to every figure, because a two-point gap across 395 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airways | 1,105 | 77.8% | 90 min | 6.88% | B− |
| Delta Air Lines | 395 | 65.9% | 171 min | 5.57% | C− |
Republic Airways cancels 6.9% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
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 Charleston to New York
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. 2 of the top 4 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. CHS → EWRCharleston to Newark | United Airlines | 80.1% | 82.2% | 2.60% | 5am–8am, Sat | UA 1289 06:00 |
| 2. CHS → LGACharleston to New York | Republic Airways | 72.4% | 77.8% | 6.88% | 8am–11am, Sat | — |
| 3. CHS → JFKCharleston to New York | JetBlue Airways | 68.3% | 72.5% | 5.81% | 5am–8am, Fri | B6 2474 11:10 |
| 4. CHS → LGACharleston to New York | Delta Air Lines | 62.2% | 65.9% | 5.57% | 11am–2pm, 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 30 points, against 12 points between the best and worst carrier.
- 5am–8am289 flights88.5%
- 8am–11am39 flights91.9%
- 11am–2pm431 flights78.0%
- 2pm–5pm264 flights62.3%
- 5pm–8pm476 flights68.0%
- 8pm–5am1 flights—
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 91.9% of the time, against 62.3% for the afternoon window. That is 30 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5pm–8pm window is the busiest, with 476 flights scheduled in it.
Explore
Filter CHS to LGA 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 CHS to LGA, the best departure window is 8am–11am at 91.9% on time and the worst is 2pm–5pm at 62.3%, a wide gap of 29.6 points. All US flights leaving 8am–11am ran 83.9%.
- 5–8am88.5%
- 8–11am91.9%
- 11am–2pm78.0%
- 2–5pm62.3%
- 5–8pm68.0%
- 8pm–5am—
best all US flightsScale 55% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 20 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 63.0% on time, against 82.9% 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 142 flights.
Across the week, Saturday is the strongest day at 82.8% on time and Sunday the weakest at 68.9%, a spread of 14 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 42,000 reported delay minutes.
- 39%Carrier
- 32%Late-arriving aircraft
- 28%National Airspace System
- 1%Extreme weather
- 0%Security
The largest share of delay minutes, 39%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 16,000 of the 42,000 delay minutes reported here. The split is drawn from 42,054 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 91.9% on time here.
Cancellations run at 6.53%, against 1.89% nationally. That is about one flight in fifteen 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
12.8% 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 641 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 71.9% on time across 1,501 flights, within 3 points 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 1,500 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 LGA after this flight
What to do with this
Booking this route
Put together: the delay figures matter less here than the 6.53% cancellation rate. A late arrival costs you close to two hours; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 1,392 completed flights over 12 months sit behind that.
Common questions
CHS to LGA questions
How often is CHS to LGA delayed?
About one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 25.4% of the 1,500 flights in this analysis, against 22.7% nationally. Delayed flights are late by close to two hours on average.
Which airline is most reliable on CHS to LGA?
Republic Airways leads at 77.8% on time across 1,105 flights. Delta Air Lines is at the other end on 65.9%, a gap of 12 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on CHS to LGA?
The 8am–11am departure window is the strongest at 91.9% on time. The 2pm–5pm window is the weakest at 62.3%, 30 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 CHS to LGA?
December is the weakest month at 63.0% on time, compared with 82.9% in September. Across the year that is 20 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
- LGA to CHS — the return legseparate record
- Charleston International (CHS) delay statistics
- LaGuardia (LGA) delay statistics
- Republic Airways on CHS to LGA77.8%
- Delta Air Lines on CHS to LGA65.9%
- CHS to ATL, a related route88.9%
- ORD to LGA, a related route66.6%
- CHS to CLT, a related route82.7%
- Republic Airways on-time record77.8%
- Delta Air Lines on-time record65.9%
- The US routes with the most cancellations
- Same route, different airline: where the carrier you pick matters most
Direction matters. CHS to LGA and LGA to CHS 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.