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Route on-time record

GSP to LGA: most on-time flights and the best time to fly

Greenville/Greer/Spartanburg (Greenville-Spartanburg International Airport) to New York (LaGuardia Airport). 942 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 6.9% were cancelled. The most reliable flight number was Republic 4751 at 6:00 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

GSP → LGA

Greenville/Greer/Spartanburg to New York: 942 nonstop flights a year

On time (12 months)

76%

Cancelled

6.9%

avg delay 20 min

Best time to leave

9 AM to noon

87% on time vs 63% 6 to 9 PM

Most reliable airline

Republic

71% chance on time

Check GSP to LGA fares

Lowest nonstop fare seen in the next two months: $367 (American 4751 on 2026-11-29). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · Republic 4751 · sold as American Eagle, Delta Connection or United Express

    6:00 AM → 8:02 AM2h 02m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    78%

    chance on time

    On time (history)
    82%
    Cancelled
    5.1%
    Avg arrival delay
    12 min
    • Arrived on time 82% of the time (314 flights, Jun 2025 to May 2026).
    • Cancelled 5.1% of the time (17 of 332).

    Strong track record · 314 flights

    Find 6:00 AM flight fares Opens this date on Aviasales

  2. #2 · Republic 4449 · sold as American Eagle, Delta Connection or United Express

    12:35 PM → 2:39 PM2h 04m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    73%

    chance on time

    On time (history)
    83%
    Cancelled
    0.0%
    Avg arrival delay
    11 min
    • Arrived on time 83% of the time (42 flights, Jun 2025 to May 2026).
    • Never cancelled in 42 scheduled flights.
    • Lands inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
    • Short track record (42 flights), so its score leans on the airline's record at this hour.

    Limited track record · 42 flights

    Find 12:35 PM flight fares Opens this date on Aviasales

  3. #3 · Republic 4448 · sold as American Eagle, Delta Connection or United Express

    6:10 PM → 8:17 PM2h 07m nonstop

    Local times, typical schedule. Last flown 2026-05-19.

    72%

    chance on time

    On time (history)
    89%
    Cancelled
    2.6%
    Avg arrival delay
    6 min
    • Arrived on time 89% of the time (37 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 63% on time; 9 AM to noon: 87%).
    • Short track record (37 flights), so its score leans on the airline's record at this hour.

    Limited track record · 37 flights

    Find 6:10 PM flight fares Opens this date on Aviasales

  4. #4 · Republic 4423 · sold as American Eagle, Delta Connection or United Express

    5:59 PM → 8:04 PM2h 05m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    64%

    chance on time

    On time (history)
    60%
    Cancelled
    0.0%
    Avg arrival delay
    48 min
    • Arrived on time 60% of the time (10 flights, Jun 2025 to May 2026).
    • 50% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (10 flights), so its score leans on the airline's record at this hour.

    Limited track record · 10 flights

    Find 5:59 PM flight fares Opens this date on Aviasales

  5. #5 · Republic 4534 · sold as American Eagle, Delta Connection or United Express

    12:55 PM → 2:52 PM1h 57m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    61%

    chance on time

    On time (history)
    66%
    Cancelled
    12.1%
    Avg arrival delay
    27 min
    • Arrived on time 66% of the time (224 flights, Jun 2025 to May 2026).
    • Cancelled 12.1% of the time (31 of 256).
    • Lands inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.

    Strong track record · 224 flights

    Find 12:55 PM flight fares Opens this date on Aviasales

  6. #6 · Republic 4364 · sold as American Eagle, Delta Connection or United Express

    6:53 PM → 8:52 PM1h 59m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    57%

    chance on time

    On time (history)
    57%
    Cancelled
    11.3%
    Avg arrival delay
    41 min
    • Arrived on time 57% of the time (110 flights, Jun 2025 to May 2026).
    • Cancelled 11.3% of the time (14 of 124).
    • Leaves in this route's least on-time window (6 to 9 PM: 63% on time; 9 AM to noon: 87%).

    Moderate track record · 110 flights

    Find 6:53 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Republic Airways (sold as American Eagle, Delta Connection or United Express)71%

    942 flights · 76% on time as flown · 6.9% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM82%

    332 flights · avg delay 12 min

  • 9 AM to noon87%

    137 flights · avg delay 13 min

  • Noon to 3 PM73%

    170 flights · avg delay 20 min

  • 3 to 6 PM69%

    84 flights · avg delay 26 min

  • 6 to 9 PM63%

    219 flights · avg delay 34 min

Best day: Saturday (90%). Worst: Friday (81%).

Smarter routing

Nearby airports that run more on time

  • GSP → EWR 82% chance on time

    Greenville-Spartanburg International Airport to Newark Liberty International Airport · 743 flights a year · 17 mi from your airports · yours: 71%

    Rank flightsFares

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
82
F
85
M
81
A
86
M
81
J
81
J
81
A
84
S
90
O
87
N
83
D
84

What delays this route

  • Late-arriving aircraft40%
  • Air traffic control and airport volume26%
  • Airline (crew, maintenance, boarding)24%
  • Severe weather10%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

GSP to LGA questions

What time of day is best to fly GSP to LGA?
9 AM to noon: 87% of flights arrived on time, against 63% for departures 6 to 9 PM.
Which airline is most on time from GSP to LGA?
Republic, with a season-adjusted 71% chance of operating and arriving on time over 942 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on GSP to LGA?
July (81% on time); the best was September (90%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

More routes from GSP

Live status: FAA delays and ground stops