Route
SUN → SFO
Friedman Memorial Airport San Francisco International Airport
587 miles
Return route SFO → SUN →
Alerts at SUN and SFO
How punctual is this route?
- On-time arrivals
- 57.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 76 min
- Flights arriving 15+ minutes late
- Flights tracked
- 291
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 78%
- Airline (crew, maintenance, cleaning) 16%
- Late-arriving aircraft 5%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 78.6% | 14 |
| October 2025 | 72.7% | 11 |
| December 2025 | 57.6% | 33 |
| January 2026 | 81.0% | 42 |
| February 2026 | 78.4% | 37 |
| March 2026 | 92.5% | 40 |
| April 2026 | 71.4% | 7 |
| May 2026 | 33.3% | 9 |
| June 2026 | 3.2% | 31 |
| July 2026 | 26.5% | 35 |
| August 2026 | 37.5% | 32 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| SkyWest Airlines | 291 | 57.9% | 0.0% | 76 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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