$95+ Cheap flights from San Diego to St. Louis (SAN - STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from San Diego to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from San Diego to Lambert-St Louis are usually found in August or February, booked 66 days in advance, depart on a Wednesday or Thursday and return on a Tuesday
Cheap flight deals from San Diego to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 30, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $277 (Trip.com) |
One-way from | $95 (Frontier) |
Popular in | December |
Cheapest in | August |
Average price | $369 |
Good round-trip deal | $411 or less |
Good one-way deal | $246 or less |
Find flight deals from San Diego to St. Louis
Cheapest flights from San Diego to St. LouisExplore the most affordable flight options available from San Diego to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.
Explore the most affordable flight options available from San Diego to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.
This Trip.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2025.
Use the filters below to find and compare flights from San Diego to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Thu 5/15
8:54 pm-9:09 am
1 stop10h 15m
Lambert-St Louis
Mon 5/19
6:53 pm-11:19 pm
2 stops30h 26m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Fri 6/13
9:40 pm-9:04 am
1 stop9h 24m
Lambert-St Louis
Mon 6/16
3:42 pm-11:29 pm
1 stop9h 47m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Tue 6/3
6:15 am-4:31 pm
2 stops8h 16m
Lambert-St Louis
Thu 6/5
1:42 pm-5:14 pm
1 stop5h 32m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Tue 6/3
8:48 pm-9:15 am
2 stops34h 27m
Lambert-St Louis
Thu 6/5
5:15 pm-6:03 pm
3 stops26h 48m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Thu 6/19
5:50 pm-10:33 am
2 stops14h 43m
Lambert-St Louis
Sun 6/22
6:12 pm-6:26 pm
2 stops26h 14m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Mon 6/2
5:35 pm-12:50 am
1 stop5h 15m
Lambert-St Louis
Wed 6/4
10:55 am-3:10 pm
2 stops6h 15m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Thu 7/3
4:24 pm-11:59 pm
1 stop5h 35m
Lambert-St Louis
Sun 7/6
9:05 pm-12:16 am
1 stop5h 11m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Tue 5/20
7:29 am-4:22 pm
1 stop6h 53m
Lambert-St Louis
Wed 5/28
6:52 am-5:14 pm
2 stops12h 22m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Thu 5/15
8:54 pm-9:09 am
1 stop10h 15m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Tue 6/3
8:48 pm-9:15 am
2 stops34h 27m
Compare providers for flights from San Diego to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to St. Louis in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Diego-St. Louis flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on San Diego-St. Louis flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from San Diego-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Diego-St. Louis flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Diego to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from San Diego with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from San Diego to St. Louis
How far ahead should I book a flight from San Diego to St. Louis?
Use this chart to determine the optimal time to book a round-trip flight from San Diego to St. Louis. Price data was last updated on April 25, 2025.
The best time to book flights from San Diego to St. Louis is 66 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from San Diego to St. Louis?
Currently, August is the cheapest month in which you can book a flight from San Diego to St. Louis (average of $311). Flying from San Diego to St. Louis in March 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 is the cheapest time of day to fly from SAN to STL?
Find hourly flight availability from San Diego to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.
A simple way to save on the total cost of your ticket is to fly from San Diego to St. Louis in the evening. If you’re flexible enough to do this you can expect to save up to 60% on your trip compared to booking a flight in the afternoon.
What is the cheapest day to fly from San Diego to St. Louis?
Use this chart to determine the cheapest time to fly round-trip from San Diego to St. Louis. Price data was last updated on March 30, 2025.
Travelers seeking maximum savings on their San Diego to St. Louis flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in St. Louis by month
Plan your trip to St. Louis by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.
Temperature in St. Louis by month
Plan your trip to St. Louis by taking into account the average temperature totals by month.
If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated April 30, 2025.
To help decide which airline to fly from San Diego to St. Louis, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Food
Entertainment
Overall
Comfort
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Food
Entertainment
Overall
Comfort
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Food
Entertainment
Overall
Comfort
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Food
Entertainment
Overall
Comfort
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Food
Entertainment
Overall
Comfort
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Food
Entertainment
Overall
Comfort
Crew
Reviews
James,Apr 2025
LAX - SFO
Related info for your journey
Find useful and relevant information for your journey from San Diego to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for San Diego to St. Louis
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Top 5 airlines flying from San Diego to St. Louis
Discover the top 5 airlines that operate flights from San Diego to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$116 | Average$241 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$190 | Average$276 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$246 | Average$355 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$256 | Average$350 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$343 | Average$494 | FlexibilityNo cancel fee | On-time63% |