Cheap flights from St. Louis to San Diego (STL - SAN) from $37

Currently, October is the cheapest month in which you can book a flight from St. Louis to San Diego (average of $288). Flying from St. Louis to San Diego in July is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

• What airports do I use to fly from St. Louis to San Diego?

  If you book a flight from St. Louis to San Diego, you will be flying from Lambert-St Louis to San Diego. Flights to San Diego (SAN) from Lambert-St Louis (STL) take 3h 40m for a nonstop flight. There is 1 flight from Lambert-St Louis to San Diego per day from 6 airlines.

• Can I find flights from St. Louis to San Diego for under $100 on Cheapflights?

  Yes, there are multiple flights from St. Louis to San Diego for under $100. The cheapest flight booked recently is on Multiple Airlines for just $96, but on average you can expect to pay $132.

• Are there nonstop flights from St. Louis to San Diego for under $400 on Cheapflights?

  Cheapflights has at least 1 direct flight from St. Louis to San Diego under $400. A good price for a nonstop flight from St. Louis to San Diego is less than $352.

• Are there last-minute flights available from St. Louis to San Diego for under $200?

  There are currently 20+ open flights from St. Louis to San Diego within the next 7 days for less than $200.

• What are the cheapest airlines flying from St. Louis to San Diego round-trip?

  Flying on Spirit Airlines is currently your cheapest option to San Diego, with prices starting at $99. Another option worth looking into is Frontier, starting at $127 round trip. You may be able to fly from St. Louis to San Diego for 72% less than the average price by searching for these airlines.

• What are the cheapest airlines to fly from St. Louis to San Diego one-way?

  The cheapest airlines for a one-way flight from St. Louis to San Diego are Spirit Airlines ($37), Frontier ($76), and Delta ($121).

• What are the most popular airlines that fly from St. Louis to San Diego?

  Consider American Airlines, Alaska Airlines or Delta when booking your flight. These represent the most popular airlines when flying from St. Louis to San Diego.

• What does STL to SAN mean?

  STL and SAN are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. STL to SAN refers to a flight route from Lambert-St Louis Airport to San Diego Airport.

• Where are the most common layover locations when flying from St. Louis to San Diego?

  St. Louis to San Diego flights have a layover in Denver most often.

• What are some popular things to do or see while on a layover in Denver?

  The majority of Denver visitors spend their time at Coors Field, 16th Street Mall, and Civic Center Park. Travelers on a layover in Denver can visit Coors Field, 16th Street Mall, and Civic Center Park, by traveling 18.4 mi, 18.7 mi, and 18.7 mi, respectively after landing at Denver Intl. Travelers can rent a car at Denver Intl for an average daily rate of $43 to make sightseeing during their layover a little easier.

• Where are the least popular layover locations for St. Louis to San Diego flights?

  St. Louis to San Diego flights have a layover in Phoenix the least frequently.

• Can I find deals for flights from St. Louis to San Diego that include extra baggage allowance?

  The amount of baggage you can bring on your St. Louis to San Diego flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

• Can I find deals on flights from St. Louis to San Diego with specific airlines?

  Yes, Cheapflights allows you to browse and filter St. Louis to San Diego flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

• Can I find deals for flights from St. Louis to San Diego that include hotel bookings?

  Yes. In addition to deals on St. Louis to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

• How can I find direct flights from St. Louis to San Diego?

  After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to San Diego.

• Can I find deals for business class flights from St. Louis to San Diego?

  Yes. Cheapflights offers flight deals from St. Louis to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

• Can I find deals for flights from St. Louis to San Diego that allow pets onboard?

  Many airlines flying from St. Louis to San Diego offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

• Can I find deals on last-minute flights from St. Louis to San Diego?

  Yes, you can often find last-minute deals on St. Louis to San Diego flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

• How recently were the St. Louis to San Diego flight deals updated?

  The St. Louis to San Diego flight deals you see on this page were last updated on 5/14.