Drive or Fly: San Anselmo, 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

Medium

No scheduled commercial flights found for OAK–ONT. At 438 miles, driving is the only practical option.

Passengers:

Vehicle:

Drive

Door to Door

8h 12m

Distance

438.7 mi

Total Cost

$132

CO2

177 kg

Cost Breakdown

Diesel$97

Hotel (1 room, 0 nights) $0

Meals (1 pax, 1 day) $35

+ No luggage restrictions or TSA lines

+ Comfortable one-day drive

+ Stop anywhere along the route

+ Have your own car at the destination

+ Likely faster door-to-door than flying

− Driver fatigue on longer stretches

− Wear and tear on vehicle

− Fuel price fluctuations

Plan the drive

Fly

Door to Door

3h 40m

47m in the air

Air Distance

392 mi

Total Cost

$191

CO2

100 kg

Door-to-Door Timeline

San Anselmo, CA → OAK 38m

Check-in & Security 90m

Flight 47m

Arrival & Baggage 30m

ONT → Fontana, CA 15m

Cost Breakdown

Ticket (1 pax @ $136) $136

Rental car (1 day)$55

Airports

San Anselmo, CA OAK — San Francisco Bay Oakland International Airport 26 mi, ~38m drive

Fontana, CA ONT — Ontario International Airport 10 mi, ~15m drive

No scheduled flights found

No commercial flights between OAK and ONT. Flight estimates above are theoretical.

+ Saves about 4h 32m compared to driving

+ Less physical fatigue

+ Predictable arrival time

− Airport security and check-in overhead

− No scheduled commercial flights found for this route

− May need a rental car at destination

− Luggage fees and restrictions

− Less flexibility for stops along the way

At a Glance

	Drive	Fly
Door-to-door time	8h 12m	3h 40m
Total cost (1 person)	$132	$191
Carbon footprint	177 kg CO₂	100 kg CO₂
Flexibility	High	Low
Luggage	Unlimited	Restricted
Reliability	Weather dependent	Data unavailable

Drive data: OSRM routing, EIA fuel prices

Flight data: Statistical estimate

Airports: OurAirports

Confidence: Medium — airports identified, fares estimated

Costs are estimates. Actual flight prices vary by airline, date, and booking time. Drive costs based on OSRM routing, EIA fuel prices. Computed Apr 12, 2026.

Decided to drive? See the full trip plan from San Anselmo, CA to Fontana, CA with stops, fuel costs, and turn-by-turn directions.