Route on-time record
GSP to MIA: most on-time flights and the best time to fly
Greenville/Greer/Spartanburg (Greenville-Spartanburg International Airport) to Miami (Miami International Airport). 725 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 1.4% were cancelled. The most reliable flight number was Envoy 3806 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
GSP → MIA
Greenville/Greer/Spartanburg to Miami: 725 nonstop flights a year
On time (12 months)
80%
Cancelled
1.4%
avg delay 13 min
Best time to leave
Before 9 AM
89% on time vs 68% 6 to 9 PM
Most reliable airline
Envoy
79% chance on time
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 · Envoy 3806 · sold as American Eagle
6:00 AM → 7:56 AM1h 56m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 89%
- Cancelled
- 1.1%
- Avg arrival delay
- 11 min
- Arrived on time 89% of the time (360 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 68%).
Strong track record · 360 flights
Find 6:00 AM flight fares Opens this date on Aviasales#2 · Envoy 3507 · sold as American Eagle
6:45 PM → 8:44 PM1h 59m nonstop
Local times, typical schedule. Last flown 2026-05-20.
80%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 84% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 43 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 89%).
- Short track record (43 flights), so its score leans on the airline's record at this hour.
Limited track record · 43 flights
Find 6:45 PM flight fares Opens this date on Aviasales#3 · Envoy 3762 · sold as American Eagle
7:26 PM → 9:23 PM1h 57m nonstop
Local times, typical schedule. Last flown 2026-04-06.
71%
chance on time
- On time (history)
- 66%
- Cancelled
- 3.3%
- Avg arrival delay
- 27 min
- Arrived on time 66% of the time (29 flights, Jun 2025 to May 2026).
- Cancelled 3.3% of the time (1 of 30).
- Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 89%).
- 75% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 29 flights
Find 7:26 PM flight fares Opens this date on Aviasales#4 · Envoy 3558 · sold as American Eagle
8:15 PM → 10:10 PM1h 55m nonstop
Local times, typical schedule. Last flown 2026-05-31.
67%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 64% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 89%).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 8:15 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Envoy Air (sold as American Eagle)79%
704 flights · 80% on time as flown · 1.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM89%
364 flights · avg delay 11 min
- 9 AM to noon84%
44 flights · avg delay 6 min
- 3 to 6 PM75%
44 flights · avg delay 18 min
- 6 to 9 PM68%
263 flights · avg delay 16 min
Best day: Tuesday (87%). Worst: Saturday (81%).
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.
What delays this route
- Airline (crew, maintenance, boarding)43%
- Late-arriving aircraft42%
- Air traffic control and airport volume12%
- Severe weather2%
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 MIA questions
- What time of day is best to fly GSP to MIA?
- Before 9 AM: 89% of flights arrived on time, against 68% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from GSP to MIA?
- Envoy, with a season-adjusted 79% chance of operating and arriving on time over 704 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 MIA?
- June (74% on time); the best was September (95%), 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
- MIA to GSP (return)
- GSP to ATL 89%
- GSP to ORD 75%
- GSP to CLT 83%
- GSP to DFW 74%
- GSP to DCA 68%
- GSP to LGA 76%
- GSP to EWR 86%
- GSP to BWI 89%
- GSP to DTW 85%
- GSP to BNA 89%
- GSP to PHL 88%
- GSP to DEN 79%
Live status: FAA delays and ground stops