Route on-time record
GSP to DTW: most on-time flights and the best time to fly
Greenville/Greer/Spartanburg (Greenville-Spartanburg International Airport) to Detroit (Detroit Metropolitan Wayne County Airport). 637 nonstop flights in Jun 2025 to May 2026, 85% arrived within 15 minutes and 2.4% were cancelled. The most reliable flight number was Delta 876 at 7:20 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
GSP → DTW
Greenville/Greer/Spartanburg to Detroit: 637 nonstop flights a year
On time (12 months)
85%
Cancelled
2.4%
avg delay 17 min
Best time to leave
Before 9 AM
94% on time vs 76% 6 to 9 PM
Most reliable airline
Delta
88% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 876
7:20 AM → 9:12 AM1h 52m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 96%
- Cancelled
- 4.0%
- Avg arrival delay
- 5 min
- Arrived on time 96% of the time (24 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; 6 to 9 PM: 76%).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find Delta 876 fares Opens this date on Aviasales#2 · Delta 733
6:26 PM → 8:13 PM1h 47m nonstop
Local times, typical schedule. Last flown 2026-05-06.
84%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 86% of the time (21 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 76% on time; Before 9 AM: 94%).
- Short track record (21 flights), so its score leans on the airline's record at this hour.
Limited track record · 21 flights
Find Delta 733 fares Opens this date on Aviasales#3 · Delta 1017
11:43 AM → 1:29 PM1h 46m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 80% of the time (25 flights, Jun 2025 to May 2026).
- Lands inside DTW's trouble window: 64% of its 28 ground stops and delay programs started between 1 PM and 7 PM.
- 65% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find Delta 1017 fares Opens this date on Aviasales#4 · Delta 402
6:14 PM → 8:05 PM1h 51m nonstop
Local times, typical schedule. Last flown 2026-04-12.
79%
chance on time
- On time (history)
- 73%
- Cancelled
- 3.2%
- Avg arrival delay
- 25 min
- Arrived on time 73% of the time (30 flights, Jun 2025 to May 2026).
- Cancelled 3.2% of the time (1 of 31).
- Leaves in this route's least on-time window (6 to 9 PM: 76% on time; Before 9 AM: 94%).
- 65% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 30 flights
Find Delta 402 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines88%
385 flights · 91% on time as flown · 2.3% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)76%
252 flights · 76% on time as flown · 2.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
297 flights · avg delay 5 min
- 9 AM to noon81%
125 flights · avg delay 14 min
- 6 to 9 PM76%
209 flights · avg delay 37 min
Best day: Saturday (94%). Worst: Monday (82%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)69%
- Severe weather17%
- Late-arriving aircraft7%
- Air traffic control and airport volume7%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
GSP to DTW questions
- What time of day is best to fly GSP to DTW?
- Before 9 AM: 94% of flights arrived on time, against 76% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from GSP to DTW?
- Delta, with a season-adjusted 88% chance of operating and arriving on time over 385 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on GSP to DTW?
- January (74% on time); the best was October (96%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from GSP
- DTW to GSP (return)
- GSP to ATL 89%
- GSP to ORD 75%
- GSP to CLT 83%
- GSP to DFW 74%
- GSP to DCA 68%
- GSP to LGA 76%
- GSP to EWR 86%
- GSP to MIA 80%
- GSP to BWI 89%
- GSP to BNA 89%
- GSP to PHL 88%
- GSP to DEN 79%
Live status: FAA delays and ground stops