St. Louis (STL) → San Diego (SAN)
About St. Louis to San Diego Flights
Discover the best flights from St. Louis to San Diego, covering 2,501 km in approximately 3h 38m. St. Louis (STL) to San Diego (SAN) is one of the popular medium-haul routes within United States. With 0 major airlines operating this route including direct flights, travelers have plenty of options to choose from. Whether you're traveling for business or leisure, our comprehensive guide helps you find the best deals, understand seasonal price variations, and choose the right airline for your journey from St. Louis to San Diego.
12-Month Price History
No price data available
Best Time to Fly
Cheapest Month
February
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
38 days
For best prices
Booking Tips
For the best prices on St. Louis to San Diego flights, we recommend booking 49 days in advance. Domestic flights typically see price increases as the departure date approaches, so early booking is advisable. Tuesday and Wednesday departures often offer the lowest fares, while Friday and Sunday flights tend to be more expensive due to business and leisure travel demand. Consider flying early morning or late evening for additional savings, as these off-peak times usually have lower demand.
Airlines Serving This Route
| Airline | Economy | Business | First |
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Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Alternative Flight Options
St. Louis → Los Angeles
St. Louis Lambert International (STL) to Los Angeles International (LAX)
Distance: 2,557 km
Average price: $484
St. Louis → Tijuana
St. Louis Lambert International (STL) to Tijuana International (TIJ)
Distance: 2,491 km
Average price: $616
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Frequently Asked Questions
How long is the flight from St. Louis to San Diego?
The flight time from St. Louis (STL) to San Diego (SAN) is approximately 3 hours and 38 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between St. Louis and San Diego?
The aerial distance between St. Louis and San Diego is 2,501 kilometers (1,554 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from St. Louis to San Diego?
Several airlines operate flights between St. Louis and San Diego, including . Direct flights are available on this route.
What is the cheapest month to fly from St. Louis to San Diego?
Based on historical data, February typically offers the lowest airfares for flights from St. Louis to San Diego. However, prices can vary based on holidays, events, and airline promotions. We recommend checking our price calendar for the most up-to-date information.
How far in advance should I book my flight to San Diego?
For the best prices on St. Louis to San Diego flights, we recommend booking 31 days in advance. Domestic flights can sometimes offer good last-minute deals, but advance booking is usually cheaper.
Do I need a visa to travel from St. Louis to San Diego?
Visa requirements depend on your nationality and the purpose of your visit. Since this is a domestic flight, no visa is required for citizens.
What is the time difference between St. Louis and San Diego?
St. Louis operates on America/Chicago time zone, while San Diego is in the America/Los_Angeles time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.