How long does it take to drive to San Diego?

It typically takes 2.5 to 3 hours, but can be longer with traffic.

Is there a direct train to San Diego?

No, you must transfer in Los Angeles.

What is the best way to travel?

Driving is the most convenient, but the train is more scenic.

Are there flights from Ontario to San Diego?

No, it is too short a distance for practical flights.

Yes, the tourist areas are generally safe.

Fontana

San Diego

Train Driving

Fontana to San Diego

Updated: 28 May 2026

The journey from Fontana to San Diego covers approximately 160 kilometers. Driving via I-15 South is the most direct route, typically taking 2 to 3 hours depending on traffic. Alternatively, you can take the Metrolink train to Los Angeles and transfer to an Amtrak Pacific Surfliner train to San Diego, though this is a longer journey. San Diego is a popular coastal destination known for its beaches and attractions.

Total Distance: Driving distance 160 km, straight-line air distance 140 km.

Fastest Way

Driving via I-15 S takes about 2.5 hours in light traffic.

Cheapest Way

Driving is usually the cheapest option.

Compare Fontana to San Diego Routes

	Train Connecting	Driving Direct
Duration	4 hours	2 hours 30 mins
Avg Price	$40 - $80	$25 - $50
Operator	Amtrak	Personal Vehicle
Route	Metrolink to LA Union Station, then Amtrak to San Diego.	I-15 S.
Tip	The coastal train ride from LA to San Diego is very scenic.	The I-15 can be very congested near Temecula and Escondido.

Travel Tips

Traffic
Avoid the I-15 during Friday afternoon rush hour.
Parking
Parking in downtown San Diego and near the beach can be expensive and difficult.
Train
Book Amtrak tickets in advance for better prices.
Weather
Coastal weather is mild, but bring a light jacket for the evening.
Local Knowledge
San Diego is a large city; plan your itinerary by neighborhood.