Delta Air Lines STL to DTW on-time performance
Delta Air Lines nonstop flights from St. Louis to Detroit · Aug 2025 – Jul 2026
On-time arrivals
88%
arrived < 15 min late
Cancelled
1.7%
19 flights
Avg arrival delay
13 min
101 min when late
Rank on route
#1 of 4
route average 81% on time
Key facts
- Delta Air Lines flights on STL to DTW arrived on time 88% of the time in Aug 2025 – Jul 2026.
- 1.7% were cancelled, and 6% arrived an hour or more late.
- That ranks #1 of 4 airlines on this route, which averaged 81% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (52%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)52%
- Late-arriving aircraft37%
- Air traffic control & airport congestion6%
- Extreme weather5%
- Security0%
Other airlines on STL to DTW
- Southwest Airlines72% on time · 17 min avg delay
- SkyWest Airlines71% on time · 32 min avg delay
- Spirit Airlines84% on time · 54 min avg delay
Full STL to DTW comparison →
Delta Air Lines on-time record across all routes →
1,095 Delta Air Lines flights tracked on this route; 19 cancelled, 2 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.