Drive or Fly: San Diego, CA to Marin City, 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 SAN–SFO. At 515 miles, driving is the only practical option.

Passengers:

Vehicle:

Find Your Vehicle (EPA fuel economy data)

Drive

Door to Door

9h 45m

Distance

515.9 mi

Total Cost

$149

CO2

208 kg

Cost Breakdown

Diesel$114

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

− Driver fatigue on longer stretches

− Wear and tear on vehicle

− Fuel price fluctuations

Plan the drive

Fly

Door to Door

3h 34m

56m in the air

Air Distance

466 mi

Total Cost

$194

CO2

119 kg

Door-to-Door Timeline

San Diego, CA → SAN 10m

Check-in & Security 90m

Flight 56m

Arrival & Baggage 30m

SFO → Marin City, CA 28m

Cost Breakdown

Ticket (1 pax @ $139) $139

Rental car (1 day)$55

Airports

San Diego, CA SAN — San Diego International Airport 2 mi, ~10m drive

Marin City, CA SFO — San Francisco International Airport 19 mi, ~28m drive

No scheduled flights found

No commercial flights between SAN and SFO. Flight estimates above are theoretical.

+ Saves about 6h 11m 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	9h 45m	3h 34m
Total cost (1 person)	$149	$194
Carbon footprint	208 kg CO₂	119 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 17, 2026.

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