Route reliability record
LGA→CHS
New York to Charleston
- Flights
- 1,501
- Period
- September 2025 to August 2026
- Distance
- 641 mi
- Carriers
- 2
This route carries a cancellation problem, not just a delay problem: 5.8% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about seven flights in ten 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 1,501 LGA to CHS flights, of which Republic Airways flew 1,106 at 73.8% on time.
Best time to fly LGA to CHS: a 8am–11am departure, ideally on a Tuesday. Flights in that window arrived on time 81.0% of the time and Tuesday flights 78.2%, against 71.9% for the route overall.
The national on-time rate over the same period is 77.3%, so this route runs 5 points behind the country as a whole. Across a thousand flights that is about 54 extra late arrivals.
Key figures
On time
71.9%
Arrivals under 15 minutes late, of 1,408 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
5.80%
National rate is 1.89%
Best carrier
Republic
73.8% on time across 1,106 flights
These figures cover 1,501 flights between September 2025 and August 2026. Beyond the headline rate, 11.6% 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 LGA to CHS
The choice of carrier is not cosmetic here. Republic Airways arrives on time 73.8% of the time; Delta Air Lines manages 66.6%. 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 | 1,106 | 73.8% | 69 min | 6.15% | C− |
| Delta Air Lines | 395 | 66.6% | 74 min | 4.81% | C− |
Republic Airways cancels 6.2% 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 New York 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. 2 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 18 points, against 7 points between the best and worst carrier.
- 5am–8am12 flights—
- 8am–11am407 flights81.0%
- 11am–2pm264 flights69.2%
- 2pm–5pm526 flights69.4%
- 5pm–8pm220 flights64.7%
- 8pm–5am72 flights63.3%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 63.3% on time, against 81.0% for the 8am–11am 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 2pm–5pm window is the busiest, with 526 flights scheduled in it.
Explore
Filter LGA 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 LGA to CHS, the best departure window is 8am–11am at 81.0% on time and the worst is 8pm–5am at 63.3%, a wide gap of 17.7 points. All US flights leaving 8am–11am ran 83.9%.
- 5–8am—
- 8–11am81.0%
- 11am–2pm69.2%
- 2–5pm69.4%
- 5–8pm64.7%
- 8pm–5am63.3%
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 33 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 52.7% on time, against 85.8% in June. 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, Tuesday is the strongest day at 78.2% on time and Thursday the weakest at 67.8%, a spread of 10 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 28,000 reported delay minutes.
- 39%Late-arriving aircraft
- 29%National Airspace System
- 25%Carrier
- 7%Extreme weather
- 0%Security
39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 28,000 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 27,940 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 81.0% on time here.
Cancellations run at 5.80%, against 1.89% nationally. That is roughly 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
11.6% 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 74.6% on time across 1,500 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 1,501 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 5.80% cancellation rate. A late arrival costs you a little over an hour; 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. 1,408 completed flights over 12 months sit behind that.
Common questions
LGA to CHS questions
How often is LGA to CHS delayed?
Roughly 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 28.1% of the 1,501 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
Which airline is most reliable on LGA to CHS?
Republic Airways leads at 73.8% on time across 1,106 flights. Delta Air Lines is at the other end on 66.6%, a gap of 7 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 LGA to CHS?
The 8am–11am departure window is the strongest at 81.0% on time. The 8pm–5am window is the weakest at 63.3%, 18 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 LGA to CHS?
December is the weakest month at 52.7% on time, compared with 85.8% in June. Across the year that is 33 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 LGA — the return legseparate record
- LaGuardia (LGA) delay statistics
- Charleston International (CHS) delay statistics
- Republic Airways on LGA to CHS73.8%
- Delta Air Lines on LGA to CHS66.6%
- LGA to ORD, a related route66.7%
- ATL to CHS, a related route82.3%
- LGA to ATL, a related route75.5%
- Republic Airways on-time record73.8%
- Delta Air Lines on-time record66.6%
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Direction matters. LGA to CHS and CHS to LGA 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.