$93 Find Cheap Flights from San Diego to St. Louis - Compare and Save

The are 1-stop and 2-stop layover flights from SAN to STL often operated by Delta, Frontier, and American Airlines. The common layover cities include Las Vegas, Salt Lake City, Dallas, Chicago, and Atlanta. Direct flights are seldom offered from SAN to STL but you can get a few operated by Southwest Airlines.

There is a Lost & Found section maintained by the St. Louis Airport Police Department. Additionally, lost items are also recovered by the Transportation Security Administration (TSA) and if you wish to make an inquiry, do so between Monday and Friday. It’s also recommended to contact your airline for inquiries.

To get to the car rental station, board the Enterprise Bus at the pick-up spot situated outside the baggage claim area. Here you’ll be assisted at the counter to get the rental agreement and vehicle keys but you may also find self-service stations for quick and easy rental transactions.

Aside from the Car Rental Service, other travel options to choose from include taking a taxi, a ride app, the MetroLink, or the bus service. The taxi zones are located at Terminal 1 Exit 14 and Terminal 2 Exit 12. The Ride App pick up zones are at Terminal 1 Exit 6 and Terminal 2 Exit 15. The MetroLink stations are at Terminal 1 Exit 1 and Terminal 2 Exit 12. Lastly, the Bus Port is located to the South of Terminal 1.

Among airlines operating San Diego to St. Louis flights:

• Southwest: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only Southwest operates flights between San Diego and St. Louis.

Flights from San Diego to St. Louis usually depart from San Diego (SAN) and arrive at Lambert-St Louis (STL).

Here are some options for this route, based on selected ticket types and cabin classes:

• Southwest: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from San Diego to St. Louis:

• Economy Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $236 round-trip via Portland (PDX), compared to $531 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest and American Airlines. Other aircraft seen on the route include Airbus A321-100/200 variants.

One-stop flights from San Diego to St. Louis most commonly connect through:

• Denver Intl (DEN) - 30% of one-stop connections
• Phoenix Sky Harbor Intl (PHX) - 22% of one-stop connections
• Dallas/Fort Worth (DFW) - 18% of one-stop connections
• Salt Lake City (SLC) - 12% of one-stop connections

Denver Intl (DEN) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 41% on the San Diego to St. Louis route. Thursday is the cheapest departure day at $339 round-trip on average, while Sunday is the most expensive at $566, a difference of $227. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Afternoon is the busiest departure period on San Diego to St. Louis flights, with 100% of flights leaving in that window. Morning departures account for 0%, evening flights for 0%, and night flights for 0%.

Some of the most popular sights in St. Louis are Downtown St. Louis, Busch Stadium and Enterprise Center. These are among the most viewed places in St. Louis on KAYAK.

These are the earliest and latest flight times available from San Diego to St. Louis:

• Earliest: departs at 6:40 am and lands at 10:15 am
• Latest: departs at 6:20 pm and lands at 9:55 pm.

The flight takes about 3h 35m.

Last-minute fares on this route - booked within 2 weeks of departure - run 28% above the route average of $372. Book 19 weeks before departure for the lowest fares.

A nonstop flight from San Diego to St. Louis takes 3h 35m, covering 1,553 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $185 to $1,634. That means the highest observed fare was about 9x higher than the lowest one.

One-way fares from San Diego to St. Louis are currently lower than usual. Average one-way flight prices are about $148, which is 34% below the typical average for this route.

Flying via Phoenix Sky Harbor Intl (PHX) gives the shortest average 1-stop total travel time at 5h 37m, compared with 6h 15m via Salt Lake City (SLC) and 6h 23m via Minneapolis St Paul (MSP).

St. Louis is 2 hours ahead of San Diego (Central Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:
• Hertz
• Budget
• Alamo
• Enterprise Rent-A-Car
• Payless

Round-trip flights from San Diego to St. Louis range from $294 to $479, with an average of $372 over the past 12 months. Anything below $294 counts as a good deal.