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Route · DTW → GSP · 2020–2025 BTS data

Detroit to Greer

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DTW to GSP (Detroit to Greer) ranks #3360 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

84.3%
On-time
+5.3 pts
vs US avg
80 min
Delay when late
2,873
Flights
#3360 of 4927
Corpus placement

Cancelled

0.8%

Best Month

Oct 2024 97%

Worst Month

Dec 2025 61%

Distance

508 mi

Carriers

15

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 57 22 1 0 DL,OO
Nov 2025 47 16 4 0 OO,DL
Oct 2025 37 8 0 0 OO,DL
Sep 2025 52 8 0 0 OO,DL
Aug 2025 65 10 0 0 OO,DL
Jul 2025 80 20 1 1 DL,OO
Jun 2025 75 24 0 0 OO,DL
May 2025 50 9 0 0 DL,OO
Dec 2024 75 16 0 2 9E,OO
Nov 2024 75 5 0 0 9E
Oct 2024 73 2 0 0 OO,9E
Sep 2024 67 10 1 0 OO,9E,DL
Aug 2024 72 20 0 1 DL,9E,OO
Jul 2024 68 25 4 1 9E,DL,OO
Jun 2024 67 14 0 0 9E,DL,OO
May 2024 57 10 0 0 9E,DL,OO
Apr 2024 48 2 0 0 9E,DL,OO
Nov 2023 45 4 0 0 9E,DL,OO
Oct 2023 50 2 0 0 9E,DL,OO
Sep 2023 54 6 0 0 9E,DL,OO
Aug 2023 58 9 0 0 9E,DL,OO
Jul 2023 52 12 0 0 9E,DL,OO
Jun 2023 56 14 0 0 9E,DL,OO
May 2023 50 5 1 0 DL,OO

DTW–GSP seasonal on-time pattern

Best: October (95.3%) · weakest: February (74.8%)

70%75%80%85%90%95%100% JanFebMarAprMayJunJulAugSepOctNovDec 74.9%

Strongest calendar month

October

95.3% on-time · ~51 flights/mo

Busiest calendar month

December

~61 flights/mo avg

Weakest calendar month

February

74.8% on-time · ~53 flights/mo

Cancellation Rate

0.8%

12 of 1,430 flights

Diversion Rate

0.3%

5 of 1,430 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

DTW - Detroit

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

DTW on-time profile

GSP - Greer

Full on-time, delay-cause, and seasonal performance for Greer, SC.

GSP on-time profile

Compare the two airports

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

Compare DTW vs GSP

Origin-hub reliability standing

Mid-pack among DTW departures

From DTW, this corridor sits with 60 other 75–85% on-time routes out of 94 tracked departures, not the hub's reliability leaders (34 at ≥85%) and not the softest ( 0 below 75%). Destination: Greer · fleet on-time rank #1466 of 4927.

What the Data Says About DTW to GSP

Bureau of Transportation Statistics records show Detroit to Greer (DTW to GSP) running a 84.3% on-time rate over 2,873 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 79.8 minutes. The 508-mile corridor is served by 15 carriers, and over the last 24 months 0.8% of 1,430 flights were cancelled, 0.3% diverted.

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 97% on-time, while Dec 2025 came in at just 61% - a 36-point swing worth factoring into travel timing.

On the multi-year calendar, DTW–GSP peaks in October at 95.3% on-time while December carries the heaviest traffic (~61 flights per month) ; the softest month is February at 74.8%, a 20.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does DTW to GSP rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, DTW to GSP ranks #3360 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 DTW to GSP? ▼
Flights from Detroit to Greer have a 84.3% on-time rate based on 2,873 flights. The average delay is 79.8 minutes. The best recent month was Oct 2024 with 97% on-time.
What is the cancellation rate for DTW to GSP? ▼
Over the last 24 months, 0.8% of flights on this route were cancelled (12 of 1,430 flights) and 0.3% were diverted.
How far is the flight from DTW to GSP? ▼
The flight distance from Detroit (DTW) to Greer (GSP) is approximately 508 miles. This route is served by 15 carriers.
When is the best time to fly from DTW to GSP? ▼
The best recent month for on-time performance was Oct 2024 (97% on-time). The worst was Dec 2025 (61% on-time). Consider booking during months with historically better performance.

Airports on this route

DTW Airport

Detroit
GSP Airport

Greer
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 DTW–GSP data

DTW–GSP runs 5.3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare DTW and GSP airport profiles: delay causes and top routes differ even on the same corridor. DTW airport
  • If your dates flex, October (95.3% on-time) beats February (74.8%) on this corridor. Seasonal chart
  • 4 other routes post a similar 84.3% 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.