Route on-time record
MIA to GSP: most on-time flights and the best time to fly
Miami (Miami International Airport) to Greenville/Greer/Spartanburg (Greenville-Spartanburg International Airport). 726 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 3762 at 4:48 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MIA → GSP
Miami to Greenville/Greer/Spartanburg: 726 nonstop flights a year
On time (12 months)
80%
Cancelled
1.4%
avg delay 9 min
Best time to leave
Noon to 3 PM
91% on time vs 75% 3 to 6 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 3762 · sold as American Eagle
4:48 PM → 6:56 PM2h 08m nonstop
Local times, typical schedule. Last flown 2026-04-06.
80%
chance on time
- On time (history)
- 83%
- Cancelled
- 3.3%
- Avg arrival delay
- 11 min
- Arrived on time 83% 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 (3 to 6 PM: 75% on time; Noon to 3 PM: 91%).
- Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 29 flights
Find 4:48 PM flight fares Opens this date on Aviasales#2 · Envoy 3558 · sold as American Eagle
5:40 PM → 7:45 PM2h 05m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 100% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 75% on time; Noon to 3 PM: 91%).
- Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 5:40 PM flight fares Opens this date on Aviasales#3 · Envoy 3507 · sold as American Eagle
4:12 PM → 6:15 PM2h 03m 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 (3 to 6 PM: 75% on time; Noon to 3 PM: 91%).
- Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 43 flights
Find 4:12 PM flight fares Opens this date on Aviasales#4 · Envoy 3435 · sold as American Eagle
9:55 PM → 11:59 PM2h 04m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 80%
- Cancelled
- 1.1%
- Avg arrival delay
- 9 min
- Arrived on time 80% of the time (357 flights, Jun 2025 to May 2026).
- Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
Strong track record · 357 flights
Find 9:55 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%
705 flights · 80% on time as flown · 1.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon87%
40 flights · avg delay 4 min
- Noon to 3 PM91%
35 flights · avg delay 4 min
- 3 to 6 PM75%
263 flights · avg delay 11 min
- After 9 PM80%
361 flights · avg delay 9 min
Best day: Tuesday (85%). Worst: Sunday (74%).
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
- Late-arriving aircraft49%
- Air traffic control and airport volume32%
- Airline (crew, maintenance, boarding)16%
- Severe weather3%
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
MIA to GSP questions
- What time of day is best to fly MIA to GSP?
- Noon to 3 PM: 91% of flights arrived on time, against 75% for departures 3 to 6 PM.
- Which airline is most on time from MIA to GSP?
- Envoy, with a season-adjusted 79% chance of operating and arriving on time over 705 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 MIA to GSP?
- June (68% on time); the best was October (92%), 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 MIA
- GSP to MIA (return)
- MIA to ATL 73%
- MIA to LGA 67%
- MIA to DFW 73%
- MIA to JFK 71%
- MIA to ORD 71%
- MIA to EWR 72%
- MIA to DCA 75%
- MIA to MCO 72%
- MIA to IAH 76%
- MIA to CLT 78%
- MIA to BOS 69%
- MIA to LAX 75%
Live status: FAA delays and ground stops