Most tourist areas are safe, but exercise caution in less populated zones.

How long is the drive?

The drive is approximately 6.5 hours.

Are there direct flights?

Yes, multiple airlines offer direct flights from SFO to ONT.

What is the best time to visit?

Spring and Fall are best for mild weather.

Is it better to fly or drive?

Flying is faster, but driving is cheaper for groups.

San Carlos

Fontana

Flight Driving

San Carlos to Fontana

Updated: 31 May 2026

The journey from San Carlos to Fontana covers about 650 kilometers. Flying into Ontario International Airport (ONT) is the most efficient way to travel, taking roughly 90 minutes. Driving via I-5 South and I-10 East is a direct 6.5-hour route. Fontana is a major city in the Inland Empire, known for its industrial heritage and proximity to the San Bernardino Mountains. This route is popular for both business and tourism.

Total Distance: 650 km driving, 610 km air distance.

Fastest Way

Flying from SFO to ONT is the fastest way to reach Fontana.

Cheapest Way

Driving is the most cost-effective for this route.

Compare San Carlos to Fontana Routes

	Flight Direct	Driving Direct
Duration	1 hour 30 mins	6 hours 30 mins
Avg Price	$120 - $280	$70 (fuel)
Operator	Southwest Airlines	Personal Vehicle
Route	SFO to ONT	I-5 South to I-10 East
Tip	ONT is the closest major airport to Fontana.	Expect heavy traffic entering the Inland Empire.

Travel Tips

Airport Choice
Fly into ONT to save time on ground transportation.
Traffic Timing
Avoid the I-10 freeway during peak rush hours.
Public Transit
Fontana has a good bus system and is served by Metrolink.
Parking
Parking is generally easy and affordable in Fontana.
Weather
Inland Empire can be very hot; pack sunscreen and light clothing.

Safety Tips

Driving Safety
Stay alert for heavy traffic in the Inland Empire area.
Personal Safety
Stick to well-lit areas in the tourist districts at night.
Emergency Kit
Keep a basic emergency kit in your car for long drives.
Ride-share Safety
Always verify your driver's identity before entering a vehicle.