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Route · GSP → DTW · 2020–2025 BTS data

Greer to Detroit

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), GSP to DTW (Greer to Detroit) ranks #3362 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

89.8%
On-time
+10.8 pts
vs US avg
112 min
Delay when late
2,871
Flights
#3362 of 4927
Corpus placement

Cancelled

1.0%

Best Month

Jul 2023 96%

Worst Month

Jul 2024 76%

Distance

508 mi

Carriers

13

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 57 7 2 0 DL,OO
Nov 2025 47 8 4 0 OO,DL
Oct 2025 36 0 0 0 DL,OO
Sep 2025 52 5 0 0 OO,DL
Aug 2025 65 6 0 0 OO,DL
Jul 2025 80 15 1 1 DL,OO
Jun 2025 74 15 0 0 DL,OO
May 2025 51 8 0 0 OO,DL
Dec 2024 75 4 0 1 9E,OO
Nov 2024 75 7 0 0 9E
Oct 2024 73 4 0 0 OO,9E
Sep 2024 67 11 1 0 OO,9E,DL
Aug 2024 72 16 0 0 DL,9E,OO
Jul 2024 68 16 5 0 9E,DL,OO
Jun 2024 67 13 0 1 9E,DL,OO
May 2024 57 3 0 0 9E,DL,OO
Apr 2024 48 1 0 0 9E,DL,OO
Nov 2023 45 2 0 0 9E,DL,OO
Oct 2023 50 2 0 0 9E,DL,OO
Sep 2023 54 4 0 0 9E,DL,OO
Aug 2023 58 7 0 0 9E,DL,OO
Jul 2023 52 2 0 0 9E,DL,OO
Jun 2023 56 4 0 0 9E,DL,OO
May 2023 50 2 1 0 DL,OO

GSP–DTW seasonal on-time pattern

Best: October (94.9%) · weakest: June (85.3%)

80%85%90%95%100% JanFebMarAprMayJunJulAugSepOctNovDec 91.8%

Strongest calendar month

October

94.9% on-time · ~51 flights/mo

Busiest calendar month

December

~61 flights/mo avg

Weakest calendar month

June

85.3% on-time · ~60 flights/mo

Cancellation Rate

1.0%

14 of 1,429 flights

Diversion Rate

0.2%

3 of 1,429 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 profile

DTW - Detroit

Full on-time, delay-cause, and seasonal performance for Detroit, MI.

DTW on-time profile

Compare the two airports

See GSP and DTW side by side on delays, cancellations, and reliability.

Compare GSP vs DTW

Origin-hub reliability standing

Among GSP's stronger departures

GSP → DTW posts a 89.8% 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 #159 of 4927 (highest on-time = #1).

What the Data Says About GSP to DTW

Greer to Detroit (GSP to DTW) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 89.8% on-time rate across 2,871 flights, with delays that do happen averaging 111.5 minutes. The corridor runs roughly 508 miles and is served by 13 carriers. Over the most recent 24 months, 14 of 1,429 flights were cancelled (1.0%) and 3 diverted (0.2%).

The monthly split is wide on this route: Jul 2023 posted the strongest performance at 96% on-time, while Jul 2024 came in at just 76% - a 20-point swing worth factoring into travel timing.

On the multi-year calendar, GSP–DTW peaks in October at 94.9% on-time while December carries the heaviest traffic (~61 flights per month) ; the softest month is June at 85.3%, a 9.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does GSP to DTW rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, GSP to DTW ranks #3362 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from GSP to DTW? ▼
Flights from Greer to Detroit have a 89.8% on-time rate based on 2,871 flights. The average delay is 111.5 minutes. The best recent month was Jul 2023 with 96% on-time.
What is the cancellation rate for GSP to DTW? ▼
Over the last 24 months, 1.0% of flights on this route were cancelled (14 of 1,429 flights) and 0.2% were diverted.
How far is the flight from GSP to DTW? ▼
The flight distance from Greer (GSP) to Detroit (DTW) is approximately 508 miles. This route is served by 13 carriers.
When is the best time to fly from GSP to DTW? ▼
The best recent month for on-time performance was Jul 2023 (96% on-time). The worst was Jul 2024 (76% on-time). Consider booking during months with historically better performance.

Airports on this route

GSP Airport

Greer
DTW Airport

Detroit
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–DTW data

GSP–DTW runs 10.8 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 DTW airport profiles: delay causes and top routes differ even on the same corridor. GSP airport
  • If your dates flex, October (94.9% on-time) beats June (85.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 89.8% 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.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.