Drive or Fly: Grossmont, CA to San Diego, CA?
Side-by-side comparison of driving versus flying for this route. Costs, time, and trade-offs at a glance.
Driving wins
MediumNo scheduled commercial flights found for SAN–SAN. At 12 miles, driving is the only practical option.
Find Your Vehicle (EPA fuel economy data)
· · Fuel cost: $
Drive
Door to Door
18m
Distance
12.7 mi
Total Cost
$38
CO2
5 kg
Cost Breakdown
Fly
Door to Door
2h 29m
1m in the air
Air Distance
11 mi
Total Cost
$120
CO2
3 kg
Door-to-Door Timeline
Cost Breakdown
Airports
No scheduled flights found
No commercial flights between SAN and SAN. Flight estimates above are theoretical.
At a Glance
| Drive | Fly | |
|---|---|---|
| Door-to-door time | 18m | 2h 29m |
| Total cost (1 person) | $38 | $120 |
| Carbon footprint | 5 kg CO2 | 3 kg CO2 |
| Flexibility | High | Low |
| Luggage | Unlimited | Restricted |
| Reliability | Weather dependent | Data unavailable |
Costs are estimates. Actual flight prices vary by airline, date, and booking time. Drive costs based on OSRM routing, EIA fuel prices. Computed Apr 16, 2026.
Route Options
2 different routes between these cities.
via CA 94
via I 8
Decided to drive? See the full trip plan from Grossmont, CA to San Diego, CA with stops, fuel costs, and turn-by-turn directions.