Route · GSP → DEN · 2020–2025 BTS data
Greer to Denver
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), GSP to DEN (Greer to Denver) ranks #3987 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 85.6%
- On-time
- +6.6 pts
- vs US avg
- 83 min
- Delay when late
- 1,723
- Flights
- #3987 of 4927
- Corpus placement
Cancelled
0.5%
Best Month
N/A
Worst Month
N/A
Distance
1,278 mi
Carriers
12
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 5 | 0 | 1 | UA,OO |
| Nov 2025 | 30 | 0 | 0 | 0 | UA |
| Oct 2025 | 31 | 3 | 0 | 0 | UA |
| Sep 2025 | 30 | 6 | 0 | 0 | UA |
| Aug 2025 | 33 | 11 | 0 | 2 | WN,UA |
| Jul 2025 | 39 | 16 | 0 | 4 | UA,WN |
| Jun 2025 | 38 | 14 | 0 | 1 | UA,WN |
| May 2025 | 31 | 15 | 0 | 0 | OO,UA |
| Apr 2025 | 30 | 5 | 1 | 0 | OO |
| Mar 2025 | 31 | 2 | 0 | 0 | OO |
| Jan 2025 | 31 | 2 | 1 | 0 | OO |
| Dec 2024 | 31 | 1 | 0 | 0 | OO |
| Nov 2024 | 30 | 7 | 1 | 0 | OO |
| Oct 2024 | 31 | 2 | 0 | 0 | OO |
| Sep 2024 | 30 | 2 | 0 | 0 | OO |
| Aug 2024 | 33 | 7 | 0 | 2 | WN,OO |
| Jul 2024 | 39 | 12 | 0 | 0 | OO,WN |
| Jun 2024 | 38 | 7 | 0 | 1 | OO,WN |
| May 2024 | 31 | 7 | 0 | 1 | OO,UA |
| Apr 2024 | 30 | 2 | 0 | 0 | OO |
| Mar 2024 | 31 | 0 | 1 | 0 | OO |
| Jan 2024 | 31 | 4 | 0 | 0 | OO |
| Dec 2023 | 31 | 1 | 0 | 0 | OO |
| Oct 2023 | 31 | 2 | 0 | 0 | OO |
GSP–DEN seasonal on-time pattern
Best: March (95.3%) · weakest: June (73.5%)
Strongest calendar month
March
95.3% on-time · ~34 flights/mo
Busiest calendar month
February
~38 flights/mo avg
Weakest calendar month
June
73.5% on-time · ~34 flights/mo
Cancellation Rate
0.5%
4 of 772 flights
Diversion Rate
1.6%
12 of 772 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 profileDEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
DEN on-time profileCompare the two airports
See GSP and DEN side by side on delays, cancellations, and reliability.
Compare GSP vs DENOrigin-hub reliability standing
Among GSP's stronger departures
GSP → DEN posts a 85.6% 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 #1019 of 4927 (highest on-time = #1).
Similar routes
Other BTS-tracked routes with comparable performance or trip length to GSP–DEN.
Routes with a similar on-time rate
What the Data Says About GSP to DEN
Greer to Denver (GSP to DEN) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.6% on-time rate across 1,723 flights, with delays that do happen averaging 83.1 minutes. The corridor runs roughly 1,278 miles and is served by 12 carriers. Over the most recent 24 months, 4 of 772 flights were cancelled (0.5%) and 12 diverted (1.6%).
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
On the multi-year calendar, GSP–DEN peaks in March at 95.3% on-time while February carries the heaviest traffic (~38 flights per month) ; the softest month is June at 73.5%, a 21.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does GSP to DEN rank among US routes by traffic? ▼
How often are flights delayed from GSP to DEN? ▼
What is the cancellation rate for GSP to DEN? ▼
How far is the flight from GSP to DEN? ▼
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–DEN data
GSP–DEN runs 6.6 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 DEN airport profiles: delay causes and top routes differ even on the same corridor. GSP airport
- If your dates flex, March (95.3% on-time) beats June (73.5%) on this corridor. Seasonal chart
- 4 other routes post a similar 85.6% 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.