Getting Around South Bay: Trolley, Border & More

Nearest Airports & Honest Drive Times

San Diego International Airport (SAN) is the primary airport for South Bay. Here is the honest breakdown of what to expect.

San Diego International Airport (SAN)

About 15 to 20 miles from South Bay. Light traffic: 20 to 25 minutes to Imperial Beach, 25 to 30 minutes to Chula Vista. Heavy traffic or rush hour: 30 to 45 minutes. This is by far the best option for most visitors. Major airlines serve SAN with direct flights from most US cities.

Tijuana International Airport (TIJ) via CBX

The Cross Border Xpress (CBX) pedestrian bridge connects the Tijuana airport to a terminal on the US side in San Ysidro. If you find a cheap flight to TIJ, the CBX walk takes about 10 minutes and then you are in South Bay in 15 to 20 minutes. Good budget option for flights from Mexico or Latin America.

Los Angeles International Airport (LAX)

About 120 miles away. Light traffic: 2 hours. Heavy traffic: 3+ hours. Only worth considering if the fare savings are significant. The I-5 drive south is long. Avoid arriving at LAX on Friday afternoons.

Do You Actually Need a Car?

A car is helpful for exploring South Bay but not strictly required. The MTS Blue Line trolley serves the area well and goes all the way to San Ysidro for the border. Uber and Lyft are available and affordable for short rides within the area.

If you are staying near Imperial Beach and focused on beach time and Tijuana day trips, the trolley plus rideshare combination works well. If you want to explore Otay Valley trails, multiple neighborhoods, and the Chula Vista bayfront, a car makes everything easier.

Car Rentals

The easiest option is renting at San Diego International Airport (SAN) — the consolidated rental car center is connected to the terminal by a free shuttle. All major companies are there. Book in advance for summer when prices jump.

Book at least 2 to 3 weeks out for summer visits. Economy cars start around $30 to $40 per day off-peak. Peak summer pricing can be significantly higher without advance booking.

Public Transit Worth Using

South Bay has better public transit than most of San Diego thanks to the MTS Blue Line trolley. It is the backbone of getting around without a car — connecting Imperial Beach, Chula Vista, National City, and all the way to San Ysidro for the border crossing.

MTS Blue Line Trolley — The Key Route

The Blue Line is the most useful transit option in South Bay. It runs frequently and connects to downtown San Diego, with stops throughout Chula Vista and National City, terminating at San Ysidro for the border. The fare is about $2.50 per ride. Use the MTS Pronto app for easy payment.

MTS Bus Routes

Several MTS bus routes serve South Bay neighborhoods. Route 933/934 connects Imperial Beach to the trolley stations. Local bus routes serve Chula Vista and National City neighborhoods. Frequency varies — the trolley is more reliable for most trips.

Use the MTS Pronto app for real-time tracking and payment. Fares are about $2.50 per ride.

Rideshare & Surge Pricing

Uber and Lyft are available throughout South Bay with typical wait times of 5 to 10 minutes. Driver density is highest near the trolley stations, IB Pier, and Chula Vista shopping areas. Surge pricing is generally less intense here than in central San Diego.

Average fares within South Bay run $8 to $15 for short rides. SAN airport runs are $15 to $25. Surge pricing is generally less intense than in central San Diego but can still hit on weekend evenings near bars and restaurants.

Getting to Tijuana (Border Crossing)

One of the biggest perks of staying in South Bay is easy access to Tijuana. The MTS Blue Line trolley goes straight to San Ysidro, where you walk across the pedestrian border crossing. No car needed, no border car line.

Weekday mornings have the shortest lines. Sunday afternoons returning to the US are the worst. Download the CBP One app to check real-time wait times. Consider SENTRI for faster returns if you plan to cross regularly.

Frequently Asked Questions