Route Reliability
St. Louis → Detroit
STL–DTW · 440 miles · St. Louis Lambert International Airport to Detroit Metropolitan Wayne County Airport
- 83%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 1.0%
- Cancelled
- 1,932
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Delta Air Lines86%1,299 flights
- 2.Southwest Airlines76%585 flights
Not enough history to rank: Spirit Airlines (48 flights). We rank airlines only after 100 flights on the route.
What the data says
Morning-you made the right choice.
STL–DTW flights departing between 6–9 AM arrived on time 94% of the time, versus 72% between 6–9 PM.
Skip Monday if you can.
STL–DTW flights arrived on time 88% of the time on Tuesdays. On Mondays: 76%.
Delta Air Lines runs this route best.
Delta Air Lines arrived on time 86% of the time on this route; Southwest Airlines managed 76%.
Ticking up lately.
STL–DTW flights arrived on time 83% of the time over the last three months in the data, compared with 78% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon76%(286 flights)
- Tue88%(268 flights)
- Wed86%(268 flights)
- Thu87%(290 flights)
- Fri80%(289 flights)
- Sat84%(219 flights)
- Sun80%(292 flights)
- 6–9 AM94%(461 flights)
- 9 AM–12 PM83%(499 flights)
- 12–3 PM81%(232 flights)
- 3–6 PM83%(263 flights)
- 6–9 PM72%(457 flights)
Jun 80% → May 82% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 80% | 176 |
| July 2025 | 76% | 188 |
| August 2025 | 86% | 179 |
| September 2025 | 94% | 155 |
| October 2025 | 87% | 171 |
| November 2025 | 88% | 152 |
| December 2025 | 79% | 151 |
| January 2026 | 76% | 124 |
| February 2026 | 80% | 112 |
| March 2026 | 79% | 159 |
| April 2026 | 88% | 169 |
| May 2026 | 82% | 176 |
Keep nerding
Based on 1,932 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.