Delta Air Lines DTW to SAT on-time performance
Delta Air Lines nonstop flights from Detroit to San Antonio · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
0.7%
7 flights
Avg arrival delay
12 min
55 min when late
Rank on route
#2 of 2
route average 81% on time
Key facts
- Delta Air Lines flights on DTW to SAT arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 0.7% were cancelled, and 6% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 81% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (58%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)58%
- Air traffic control & airport congestion22%
- Late-arriving aircraft17%
- Extreme weather3%
- Security0%
Other airlines on DTW to SAT
- Spirit Airlines90% on time · 31 min avg delay
Full DTW to SAT comparison →
Delta Air Lines on-time record across all routes →
934 Delta Air Lines flights tracked on this route; 7 cancelled, 3 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.