Cheap flights from St. Louis to San Diego (STL - SAN) from $45

Flying to your destination on a Thursday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to San Diego. Check prices with Cheapflights to find a great deal for your trip.

Travelers have found it’s best to book a flight 27 days in advance to save up to 14% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 27 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to San Diego 1-2 weeks in advance for as low as $356, or $395 for flights within the next 24 hours.

The best pricing can be found in the month of September. Prices to San Diego from St. Louis average $377. You can even find prices in September for less than $377, as users have found deals to San Diego from as low as $150. The month of December appears to be one of the more expensive times to travel to San Diego from St. Louis. Flying in the targeted month can save you up to 29%.

Unlike at noon, when flights are generally more expensive, you can save up to 26% on flights from St. Louis to San Diego by exploring options for tickets in the evening.

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 5h 45m for a nonstop flight. There is 1 flight from Lambert-St Louis to San Diego per day from 6 airlines.

Yes, there are multiple flights from St. Louis to San Diego for under $200. The cheapest flight booked recently is on Frontier for just $103, but on average you can expect to pay $136.

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

Days when nonstop flights are available for this flight are: Friday, Saturday.

Within the past month, 42 users have taken a look at flights from Lambert-St Louis to San Diego.

4 flight departures from St. Louis to San Diego per day on average.
Early Morning (Midnight to 6am) - 25% of flight departures
Morning (6am - Noon) - 25% of flight departures
Afternoon (Noon - 6pm) - 50% of flight departures

Departing from St. Louis to San Diego will take you 19h 55m. The distance between St. Louis and San Diego is about 1562 mi.

Flying on Frontier is currently your cheapest option to San Diego, with prices starting at $103. You may be able to fly from St. Louis to San Diego for 72% less than the average price by searching for this airline.

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.

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.

When you search for this flight from St. Louis to San Diego, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Cheapflights helps you find that perfect flight to San Diego from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Yes! Cheapflights helps users easily find flights from St. Louis to San Diego with no change fees.

Not ready to book yet? You can track prices for flights from St. Louis to San Diego on Cheapflights with our Price Alert feature and get notified when better prices are available.