OnTimeRoutes
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Delta Air Lines DTW to SFO on-time performance

Delta Air Lines nonstop flights from Detroit to San Francisco · Aug 2025 – Jul 2026

On-time arrivals
66%
arrived < 15 min late
Cancelled
0.7%
10 flights
Avg arrival delay
22 min
62 min when late
Rank on route
#2 of 2
route average 67% on time

Key facts

  • Delta Air Lines flights on DTW to SFO arrived on time 66% of the time in Aug 2025 – Jul 2026.
  • 0.7% were cancelled, and 10% arrived an hour or more late.
  • That ranks #2 of 2 airlines on this route, which averaged 67% on time overall.
  • The largest source of delay minutes was air traffic control & airport congestion (45%).

On-time trend by month

30%65%100%July 2025: 70.8% on time, 0.7% cancelledJul ’25August 2025: 77.3% on time, 0.0% cancelledAug ’25September 2025: 93.9% on time, 0.0% cancelledSep ’25October 2025: 78.9% on time, 0.0% cancelledOct ’25November 2025: 72.2% on time, 0.9% cancelledNov ’25December 2025: 50.5% on time, 4.5% cancelledDec ’25January 2026: 64.2% on time, 0.0% cancelledJan ’26February 2026: 69.0% on time, 0.0% cancelledFeb ’26March 2026: 67.0% on time, 1.8% cancelledMar ’26April 2026: 61.7% on time, 0.9% cancelledApr ’26May 2026: 51.7% on time, 0.0% cancelledMay ’26June 2026: 40.8% on time, 0.8% cancelledJun ’26July 2026: 63.8% on time, 0.0% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Air traffic control & airport congestion45%
  • Airline (crew, maintenance, cleaning, fueling)39%
  • Late-arriving aircraft11%
  • Extreme weather5%
  • Security0%

Other airlines on DTW to SFO

1,388 Delta Air Lines flights tracked on this route; 10 cancelled, 0 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.