Flight California Redwood Coast - Humboldt County Airport departs from Eureka California Redwood Coast - Humboldt County Airport at 08:00 and arrives at San Francisco International Airport at 09:13.
The flighttime is about 4h 13m. The distance travelled ("as the bird flies"): 281 Km. So the average speed is roughly 67 Km.
There is an 3 hour time difference between Eureka and San Francisco