Delta Air Lines DTW to STL on-time performance
Delta Air Lines nonstop flights from Detroit to St. Louis · Aug 2025 – Jul 2026
On-time arrivals
80%
arrived < 15 min late
Cancelled
1.3%
14 flights
Avg arrival delay
13 min
63 min when late
Rank on route
#2 of 4
route average 77% on time
Key facts
- Delta Air Lines flights on DTW to STL arrived on time 80% of the time in Aug 2025 – Jul 2026.
- 1.3% were cancelled, and 7% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (54%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)54%
- Late-arriving aircraft33%
- Air traffic control & airport congestion12%
- Extreme weather1%
- Security0%
Other airlines on DTW to STL
- Southwest Airlines76% on time · 14 min avg delay
- SkyWest Airlines61% on time · 35 min avg delay
- Spirit Airlines89% on time · 16 min avg delay
Full DTW to STL comparison →
Delta Air Lines on-time record across all routes →
1,095 Delta Air Lines flights tracked on this route; 14 cancelled, 6 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.