Is San Diego expensive?

It is moderately expensive, especially for lodging and dining.

It is highly recommended for exploring the region.

What is the best time to visit?

Spring and fall offer the best weather.

Yes, the San Diego Zoo is one of the best in the world.

How long is the flight?

A flight from St. Louis is about 4 hours.

Troy

San Diego

Flight Driving

Troy to San Diego

Updated: 28 May 2026

The route from Troy, Missouri to San Diego, California covers approximately 2,900 kilometers. Driving is a long-distance journey that typically follows I-40 west, taking about 27 hours of driving time. Flying from St. Louis Lambert International Airport to San Diego International Airport (SAN) is the most efficient option. You will traverse the heart of the Southwest before reaching the Pacific Coast. Expect a beautiful climate upon arrival in Southern California.

Total Distance: 2,900 km driving distance; 2,500 km straight-line air distance.

Fastest Way

A flight from St. Louis to San Diego takes about 4 hours with a connection.

Cheapest Way

Flying is the most cost-effective way to reach San Diego from Missouri.

Compare Troy to San Diego Routes

	Flight Connecting	Driving Direct
Duration	4 hours	27 hours
Avg Price	$160 - $500	$500 - $700 in fuel
Operator	Southwest Airlines	Personal Vehicle
Route	STL to SAN	I-70 W to I-40 W through Oklahoma City and Phoenix.
Tip	Connecting flights are common; check for the shortest layover.	Plan for at least two overnight stops to manage the distance.

Travel Tips

Transportation
A rental car is recommended for visiting attractions outside downtown.
Sun Safety
The sun is strong; wear sunscreen even on overcast days.
Dining
Try the local fish tacos; they are a San Diego staple.
Parking
Parking in downtown and beach areas can be difficult; use apps to find spots.
Weather
The coastal breeze can be cool in the evenings; bring a light jacket.

Safety Tips

Beach Safety
Always swim near lifeguard towers and watch for rip currents.
Sun Exposure
Avoid peak sun hours to prevent sunburn.
Emergency
Keep your phone charged and know the local emergency number.
Neighborhoods
San Diego is generally safe, but stay aware in unfamiliar areas at night.