Route · GSP → MIA · 2020–2025 BTS data
Greer to Miami
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), GSP to MIA (Greer to Miami) ranks #3839 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 85.5%
- On-time
- +6.5 pts
- vs US avg
- 73 min
- Delay when late
- 1,977
- Flights
- #3839 of 4927
- Corpus placement
Cancelled
0.5%
Best Month
Oct 2025 96%
Worst Month
May 2024 66%
Distance
637 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 65 | 11 | 0 | 0 | YX,MQ |
| Nov 2025 | 63 | 10 | 1 | 0 | MQ,YX |
| Oct 2025 | 57 | 2 | 0 | 0 | MQ |
| Sep 2025 | 32 | 1 | 0 | 0 | MQ |
| Aug 2025 | 63 | 10 | 0 | 0 | YX,MQ |
| Jul 2025 | 65 | 16 | 0 | 0 | YX,MQ |
| Jun 2025 | 64 | 21 | 1 | 0 | YX,MQ |
| May 2025 | 58 | 11 | 0 | 0 | MQ |
| Apr 2025 | 30 | 4 | 0 | 0 | MQ |
| Mar 2025 | 40 | 1 | 0 | 1 | MQ |
| Feb 2025 | 56 | 10 | 0 | 0 | MQ |
| Jan 2025 | 62 | 7 | 1 | 0 | MQ |
| Dec 2024 | 60 | 12 | 0 | 0 | MQ |
| Nov 2024 | 57 | 2 | 0 | 0 | MQ |
| Oct 2024 | 47 | 4 | 0 | 0 | MQ |
| Sep 2024 | 30 | 2 | 1 | 0 | MQ |
| Aug 2024 | 31 | 0 | 0 | 0 | MQ |
| Jul 2024 | 31 | 5 | 0 | 0 | MQ |
| Jun 2024 | 34 | 6 | 0 | 0 | MQ |
| May 2024 | 62 | 21 | 0 | 0 | MQ |
| Apr 2024 | 57 | 6 | 0 | 0 | MQ |
| Mar 2024 | 31 | 2 | 0 | 0 | MQ |
| Jan 2024 | 31 | 6 | 2 | 0 | MQ |
| Dec 2023 | 31 | 3 | 0 | 0 | MQ |
GSP–MIA seasonal on-time pattern
Best: September (95.2%) · weakest: May (77.9%)
Strongest calendar month
September
95.2% on-time · ~31 flights/mo
Busiest calendar month
February
~55 flights/mo avg
Weakest calendar month
May
77.9% on-time · ~53 flights/mo
Cancellation Rate
0.5%
6 of 1,157 flights
Diversion Rate
0.1%
1 of 1,157 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
GSP - Greer
Full on-time, delay-cause, and seasonal performance for Greer, SC.
GSP on-time profileMIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
MIA on-time profileCompare the two airports
See GSP and MIA side by side on delays, cancellations, and reliability.
Compare GSP vs MIAOrigin-hub reliability standing
Among GSP's stronger departures
GSP → MIA posts a 85.5% on-time rate, landing in the ≥85% band with 9 of 14 BTS-tracked routes leaving Greer. The same hub also shows 5 mid-band and 0 challenged departures · fleet-wide on-time rank #1055 of 4927 (highest on-time = #1).
Similar routes
Other BTS-tracked routes with comparable performance or trip length to GSP–MIA.
Routes with a similar on-time rate
What the Data Says About GSP to MIA
Greer to Miami (GSP to MIA) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.5% on-time rate across 1,977 flights, with delays that do happen averaging 73.0 minutes. The corridor runs roughly 637 miles and is served by 3 carriers. Over the most recent 24 months, 6 of 1,157 flights were cancelled (0.5%) and 1 diverted (0.1%).
The monthly split is wide on this route: Oct 2025 posted the strongest performance at 96% on-time, while May 2024 came in at just 66% - a 30-point swing worth factoring into travel timing.
On the multi-year calendar, GSP–MIA peaks in September at 95.2% on-time while February carries the heaviest traffic (~55 flights per month) ; the softest month is May at 77.9%, a 17.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does GSP to MIA rank among US routes by traffic? ▼
How often are flights delayed from GSP to MIA? ▼
What is the cancellation rate for GSP to MIA? ▼
How far is the flight from GSP to MIA? ▼
When is the best time to fly from GSP to MIA? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using GSP–MIA data
GSP–MIA runs 6.5 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare GSP and MIA airport profiles: delay causes and top routes differ even on the same corridor. GSP airport
- If your dates flex, September (95.2% on-time) beats May (77.9%) on this corridor. Seasonal chart
- 4 other routes post a similar 85.5% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.