Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from San Diego to St Louis
The cheapest flights right now
San Diego – St Louis
Outbound – Dec 3, 2026
direct
3h 30m Return – Dec 9, 2026
direct
5h 30m $291
today
San Diego – St Louis
Outbound – Dec 3, 2026
1 stop
5h 20m DEN
Return – Dec 9, 2026
direct
3h 55m $290
today
San Diego – St Louis
Outbound – Dec 3, 2026
direct
3h 30m Return – Dec 9, 2026
1 stop
5h 20m MCI
$307
today
San Diego – St Louis
Outbound – Dec 3, 2026
direct
3h 30m Return – Dec 9, 2026
direct
5h 30m $430
3 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$202
Average price of a round trip
$237
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
18h56
A flight from San Diego to St Louis takes on average 18h56.
Best time
September
According to user searches, the ideal month to go to St Louis is September.
Tips for finding a cheap flight from San Diego to St Louis
Check out our tips for booking your flight to St Louis (USA) from San Diego (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is October, with an average flight ticket price of $228 (calculation over the last two years). The most touristic season corresponds to the months of October, November and January.
For the cheapest flights, it is advisable to buy your ticket at least 35 days before the departure date.
The airline offering the cheapest flight tickets is Frontier Airlines. A ticket from the airline Frontier Airlines to St Louis costs on average $229.
The airlines that offer the most flights are .
Price of flight tickets from San Diego to St Louis
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $202 to $371
- The average price of a flight ticket is about $237
- Prices are lowest for stays in the month of October
- The month in which booking a ticket is cheaper is: October
info departure city :
San Diego, USA
airports :
Lindbergh Field (SAN)
Montgomery Field (MYF)
NAS (NZY)
local time :
San Diego is a city in the country USA, the time zone is [[timezone]]. In San Diego, it is currently {fromLocalTime}, the temperature is on average 23°C, with a minimum of 22°C and a maximum of 24°C.
The city of San Diego has 3 airport(s): Lindbergh Field, Montgomery Field and NAS
destination info :
St Louis, USA
airports :
Lambert-St. Louis International Airport (STL)
St. Louis Downtown Airport (CPS)
Spirit of St. Louis Airport (SUS)
local time :
St Louis is in the country USA, the time zone is [[timezone]]. In St Louis, it is currently {toLocalTime}, the temperature is on average 16°C, with a minimum of 10°C and a maximum of 22°C.
The city of St Louis has 3 airport(s): Lambert-St. Louis, St. Louis Downtown and Spirit of St. Louis
Useful info about St Louis
What is the least touristic period to go to St Louis?
If you want to visit St Louis during the least touristic period, choose the month of September.
What is the most popular time to travel to St Louis?
In St Louis, the most popular month is October. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from San Diego to St Louis?
According to our data, it is recommended to book your flight 35 days before your departure. If you book your flight ticket 6 weeks before your departure, you may find a price below average. You can also choose morning flights that are 100% cheaper than afternoon and evening flights. The cheapest day to book a flight from San Diego to St Louis is Saturday.
What are the arrival and destination airports when traveling between San Diego and St Louis?
When you leave, you can leave from Lindbergh Field, and you will arrive at Lambert-St. Louis.
How to reach San Diego airport from the city centre?
The airport Lindbergh Field is located 4 km, Montgomery Field is located 10 km or NAS is located 6 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from San Diego to St Louis?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between San Diego and St Louis?
In summer, the average temperature is 25°C in St Louis and 21°C in San Diego. The average rainfall in summer is 135 mm in St Louis and 4 mm in San Diego. In summer, it is warmer in St Louis and it rains less in San Diego. In winter, it is colder in San Diego and it rains more in St Louis.
