Yes, flying saves you nearly 7 hours of travel time.

How long is the drive?

The drive is approximately 8 to 9 hours depending on traffic.

Are there direct flights?

Yes, several airlines offer direct flights from SFO to SAN.

Is the train an option?

You can take the train, but it requires a transfer and takes much longer.

What is the best time to visit?

San Diego has great weather year-round, but spring and fall are ideal.

Redwood City

San Diego

Flight Driving

Redwood City to San Diego

Updated: 31 May 2026

The trip from Redwood City to San Diego covers roughly 800 kilometers. Flying from SFO to San Diego International Airport (SAN) takes about 1 hour and 30 minutes. Driving via I-5 South is a long journey, typically taking 8 to 9 hours without stops. This route takes you from the heart of the Bay Area to the southern tip of California. It is a popular route for vacationers heading to the coast.

Total Distance: 800 km driving, 750 km air distance.

Fastest Way

Flying is significantly faster than driving.

Cheapest Way

Driving is usually cheaper for groups of two or more people.

Compare Redwood City to San Diego Routes

	Flight Direct	Driving Direct
Duration	1 hour 30 minutes	8 hours 30 minutes
Avg Price	120 to 300 dollars	100 dollars in fuel
Operator	Alaska Airlines, United Airlines	Personal Vehicle
Route	SFO to SAN.	I-5 South.
Tip	Book early to avoid high prices during peak holiday seasons.	Plan for at least two stops to stretch your legs and refuel.

Travel Tips

Airport
San Diego International Airport is very close to downtown, making it easy to reach your hotel.
Traffic
Avoid the I-5 through Orange County during rush hour to save significant time.
Public Transit
Use the San Diego Trolley to get around the city without a car.
Sun Protection
The sun is strong in San Diego; always wear sunscreen and a hat.
Booking
Check flight prices on multiple platforms to find the best deal.

Safety Tips

Driving
Stay alert on the long I-5 stretch; take breaks to avoid driver fatigue.
Beach Safety
Always swim near lifeguard towers at San Diego beaches.
Personal Security
Be aware of your surroundings in busy tourist areas.
Emergency
Keep your phone charged and have a backup power bank for long trips.