Drive or Fly: San Francisco, CA to Fontana, CA?
Side-by-side comparison of driving versus flying for this route. Costs, time, and trade-offs at a glance.
Driving wins
MediumDriving is significantly cheaper and the distance is manageable in one day.
Find Your Vehicle (EPA fuel economy data)
· · Fuel cost: $
Drive
Door to Door
7h 58m
Distance
426.6 mi
Total Cost
$116
CO2
172 kg
Cost Breakdown
Fly
Door to Door
3h 17m
45m in the air
Air Distance
377 mi
Total Cost
$190
CO2
96 kg
Door-to-Door Timeline
Cost Breakdown
Airports
Flight Data
Service
Connecting only
On-Time
100.0%
At a Glance
| Drive | Fly | |
|---|---|---|
| Door-to-door time | 7h 58m | 3h 17m |
| Total cost (1 person) | $116 | $190 |
| Carbon footprint | 172 kg CO2 | 96 kg CO2 |
| Flexibility | High | Low |
| Luggage | Unlimited | Restricted |
| Reliability | Weather dependent | 100% on-time |
Costs are estimates. Actual flight prices vary by airline, date, and booking time. Drive costs based on OSRM routing, EIA fuel prices. Computed Jul 21, 2026.
Route Options
2 different routes between these cities.
via I 5, I 580, I 5 Truck
via US 101; CA 156, US 101, CA 46
Decided to drive? See the full trip plan from San Francisco, CA to Fontana, CA with stops, fuel costs, and turn-by-turn directions.