Detroit (DTW) to San Francisco (SFO): On-Time Performance
Data through July 2026
When you fly DTW to SFO matters as much as anything else about the booking: the route swung from 94% on-time in September 2025 to just 43% in June 2026. Across the full period the route averages 73% on-time against a national 78%. Morning departures also hold up better than evening ones (78% vs 66%), which matters most in the rough months.
- On-time
- 73%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 4.9
- last 12 months
- Duration
- 5h 10m
- scheduled
- Distance
- 2,079 mi
Best airline from DTW to SFO
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 75% | 21 min | 0.9% | 894 |
| Delta Air Lines | 72% | 18 min | 0.8% | 2,878 |
Monthly on-time trend
Best time to fly from DTW to SFO
Aim for departures around 8 a.m. (79% on-time); avoid 6 p.m. departures (56%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 68% | 19 min |
| Tuesdaybest | 80% | 10 min |
| Wednesday | 78% | 14 min |
| Thursday | 70% | 21 min |
| Friday | 69% | 22 min |
| Saturday | 76% | 16 min |
| Sunday | 70% | 26 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft18%
- Airline operations42%
- National airspace system37%
- Weather3%
Frequently asked questions
- How often are flights from DTW to SFO delayed?
- 27% of DTW–SFO flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 19 minutes.
- Which airline is most reliable from DTW to SFO?
- United Airlines has the best on-time record on this route at 75%, based on 894 flights. 2 airlines flew DTW–SFO frequently enough to compare in this period.
- What is the best time of day to fly from DTW to SFO?
- Departures around 8 a.m. have the best record (79% on-time), while departures around 6 p.m. have the worst (56%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DTW to SFO?
- The scheduled DTW–SFO flight time averages 5h 10m over 2,079 miles. Actual arrival times vary — flights on this route land 15+ minutes late 27% of the time.
- How often are DTW to SFO flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from DTW to SFO?
- June 2026 was the roughest month in this dataset, with only 43% of arrivals on time. The best was September 2025 at 94%. If your dates are flexible, that 51-point gap is worth planning around.
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Based on 3,772 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.