GSP to MIA flight delays
Greer, SC (GSP) Miami, FL (MIA) · 637 miles
725 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
80.45%
Arrived on time
Within 15 minutes of schedule
1.24%
Cancelled
Share of scheduled flights
61 min
When late, late by
Average across delayed arrivals
13 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In September it ran 37.2 points more punctual than in January — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The route has been getting worse. The later months run 9.9 points less punctual than the earlier ones. A drift of that size is rarely weather; it is more often an airline adding frequencies faster than the airports can absorb them.
Only Envoy Air flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
The Greer to Miami route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, Envoy Air arrived on time most often on GSP to MIA. Flights ran closest to schedule in September and worst in January.
Every airline on GSP to MIA
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Envoy Air | 704 | 80.34% | 0.99% | 62 min | C |
| Republic Airways | 21 | 84.21% | 9.52% | 34 min | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
MIA to GSP Miami back to Greer 81.01% on time COther routes from Greer
Common questions
Are flights from Greer to Miami usually delayed?
80.45% of flights on the GSP to MIA route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airlines fly from Greer to Miami?
Only Envoy Air appears in the published record on this route, with 704 flights and 80.34% arriving on time.
How often are GSP to MIA flights cancelled?
1.24% of scheduled flights did not operate — about 12 in every thousand. That is in the normal range.
What is the best month to fly Greer to Miami?
September, when 96.9% of flights arrived on time. The worst was January at 59.7%.
When GSP to MIA flights are late, how late are they?
About 61 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on GSP to MIA during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →