Route on-time record
DTW to STL: most on-time flights and the best time to fly
Detroit (Detroit Metropolitan Wayne County Airport) to St Louis (St. Louis Lambert International Airport). 1,908 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was Southwest 2361 at 7:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DTW → STL
Detroit to St Louis: 1,908 nonstop flights a year
On time (12 months)
77%
Cancelled
0.9%
avg delay 15 min
Best time to leave
Before 9 AM
86% on time vs 68% 6 to 9 PM
Most reliable airline
Spirit
79% 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 · Southwest 2361
7:00 AM → 7:45 AM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2867; its record covers all of them.
91%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 93% of the time (88 flights, Jun 2025 to May 2026).
- Never cancelled in 88 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 6 to 9 PM: 68%).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
Moderate track record · 88 flights
Find Southwest 2361 fares Opens this date on Aviasales#2 · Delta 2868
8:45 AM → 9:29 AM1h 44m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.8%
- Avg arrival delay
- 5 min
- Arrived on time 91% of the time (242 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 6 to 9 PM: 68%).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
Strong track record · 242 flights
Find Delta 2868 fares Opens this date on Aviasales#3 · Delta 1371
12:31 PM → 1:10 PM1h 39m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 90% of the time (20 flights, Jun 2025 to May 2026).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
- Short track record (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find Delta 1371 fares Opens this date on Aviasales#4 · Delta 2822
3:50 PM → 4:32 PM1h 42m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 76%
- Cancelled
- 1.6%
- Avg arrival delay
- 15 min
- Arrived on time 76% of the time (314 flights, Jun 2025 to May 2026).
- Departs inside DTW's trouble window: 64% of its 28 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 314 flights
Find Delta 2822 fares Opens this date on Aviasales#5 · Delta 1541
8:00 PM → 8:42 PM1h 42m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 76%
- Cancelled
- 1.3%
- Avg arrival delay
- 17 min
- Arrived on time 76% of the time (307 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 86%).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
Strong track record · 307 flights
Find Delta 1541 fares Opens this date on Aviasales#6 · SkyWest 3854 · sold as United Express, Delta Connection, American Eagle or Alaska
12:20 PM → 1:05 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-06. Same departure also flew as SkyWest 3739; its record covers all of them.
73%
chance on time
- On time (history)
- 78%
- Cancelled
- 2.1%
- Avg arrival delay
- 14 min
- Arrived on time 78% of the time (45 flights, Jun 2025 to May 2026).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
- Short track record (45 flights), so its score leans on the airline's record at this hour.
Limited track record · 45 flights
Find 12:20 PM flight fares Opens this date on Aviasales#7 · SkyWest 3863 · sold as United Express, Delta Connection, American Eagle or Alaska
8:59 AM → 9:46 AM1h 47m nonstop
Local times, typical schedule. Last flown 2026-04-12.
69%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.0%
- Avg arrival delay
- 31 min
- Arrived on time 64% of the time (36 flights, Jun 2025 to May 2026).
- Never cancelled in 36 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 6 to 9 PM: 68%).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
Limited track record · 36 flights
Find 8:59 AM flight fares Opens this date on Aviasales#8 · Southwest 692
8:15 PM → 8:55 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as Southwest 2869; its record covers all of them.
63%
chance on time
- On time (history)
- 63%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 63% of the time (113 flights, Jun 2025 to May 2026).
- Never cancelled in 113 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 86%).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
Moderate track record · 113 flights
Find Southwest 692 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Spirit Airlines79%
48 flights · 85% on time as flown · 1.2% cancel
- Delta Air Lines79%
1,082 flights · 80% on time as flown · 1.0% cancel
- Southwest Airlines76%
585 flights · 77% on time as flown · 0.6% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)66%
191 flights · 61% on time as flown · 1.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM86%
640 flights · avg delay 10 min
- Noon to 3 PM77%
274 flights · avg delay 15 min
- 3 to 6 PM75%
387 flights · avg delay 15 min
- 6 to 9 PM68%
512 flights · avg delay 22 min
Best day: Tuesday (85%). Worst: Friday (79%).
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)51%
- Late-arriving aircraft30%
- Air traffic control and airport volume13%
- Severe weather7%
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
DTW to STL questions
- What time of day is best to fly DTW to STL?
- Before 9 AM: 86% of flights arrived on time, against 68% 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 DTW to STL?
- Spirit, with a season-adjusted 79% chance of operating and arriving on time over 48 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 DTW to STL?
- January (73% on time); the best was September (90%), 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 DTW
- STL to DTW (return)
- DTW to ORD 72%
- DTW to ATL 78%
- DTW to LGA 75%
- DTW to MCO 75%
- DTW to EWR 75%
- DTW to CLT 84%
- DTW to DFW 76%
- DTW to DEN 79%
- DTW to DCA 68%
- DTW to PHL 79%
- DTW to LAS 77%
- DTW to FLL 72%
Live status: FAA delays and ground stops