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$54+ Cheap flights from St. Louis to San Diego (STL - SAN)

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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SAN
dic. 23 — dic. 301
lun. 12/23
lun. 12/30
1 adult, Economy
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The best prices from Lambert-St Louis to San Diego are usually found in April or January, booked 60 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

Cheap flight deals from St. Louis to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to San Diego (SAN). 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 diciembre 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$195
(Trip.com)

One-way from

$54
(Frontier)

Popular in

December

Cheapest in

April

Average price

$387
Provider with most accurate pricing for Lambert-St Louis-San Diego flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-San Diego flights.
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From Lambert-St Louis to San Diego
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One-way flight from Lambert-St Louis to San Diego
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High demand for flights, 3% potential price rise
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Best time to find cheap flights, 1% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from St. Louis to San Diego

Cheapest flights from St. Louis to San Diego
Explore the most affordable flight options available from St. Louis to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 18, 2024.

This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/239:29 pmSTL - SAN
1 stop14h 27mFrontier
mar. 12/316:25 amSAN - STL
1 stop23h 48mFrontier
Deal found 12/16$334
This American Airlines deal was found by Cheapflights users on 12/18. 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.
mar. 12/316:00 pmSTL - SAN
1 stop7h 40mAmerican Airlines
mar. 1/76:33 amSAN - STL
1 stop5h 09mAmerican Airlines
Deal found 12/18$357
This Trip.com deal was found by Cheapflights users on 12/17. 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.
dom. 12/2212:00 pmSTL - SAN
1 stop23h 16mMultiple Airlines
lun. 1/66:25 amSAN - STL
1 stop13h 51mMultiple Airlines
Deal found 12/17$446
This United Airlines deal was found by Cheapflights users on 12/18. 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.
mar. 12/315:33 pmSTL - SAN
1 stop18h 14mUnited Airlines
mar. 1/710:30 pmSAN - STL
2 stops11h 46mUnited Airlines
Deal found 12/18$500
This Southwest deal was found by Cheapflights users on 12/18. 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.
mar. 12/3111:00 amSTL - SAN
Nonstop4h 00mSouthwest
mar. 1/72:25 pmSAN - STL
1 stop6h 00mSouthwest
Deal found 12/18$568
This Delta deal was found by Cheapflights users on 12/16. 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.
sáb. 12/219:42 amSTL - SAN
1 stop7h 59mDelta
mar. 12/3110:23 pmSAN - STL
1 stop9h 10mDelta
Deal found 12/16$722
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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.
mar. 12/3111:36 amSTL - SAN
2 stops11h 28mAlaska Airlines
mar. 1/76:20 amSAN - STL
2 stops13h 49mAlaska Airlines
Deal found 12/18$753
This Mytrip deal was found by Cheapflights users on 12/17. 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.
sáb. 12/215:52 pmSTL - SAN
3 stops21h 35mSpirit Airlines
lun. 12/236:06 pmSAN - STL
3 stops19h 15mSpirit Airlines
Deal found 12/17$1,322

Find flights from St. Louis to San Diego within your budget

Customize your flight search to find flights from St. Louis to San Diego 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 diciembre 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

sáb. 3/8

6:59 pm-10:48 am

1 stop17h 49m

San Diego

jue. 3/13

4:06 pm-9:16 am

1 stop15h 10m

$196

St. LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

mar. 1/7

2:49 pm-10:33 pm

1 stop9h 44m

San Diego

jue. 1/9

10:35 am-7:34 pm

1 stop6h 59m

$197

St. LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

vie. 2/28

3:21 pm-11:59 pm

1 stop10h 38m

San Diego

lun. 3/3

7:00 am-11:59 pm

1 stop14h 59m

$248

St. LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

mar. 4/29

3:30 pm-8:22 pm

1 stop6h 52m

San Diego

mié. 5/7

6:20 am-4:45 pm

1 stop8h 25m

$276

St. LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

jue. 2/27

6:36 pm-11:30 pm

1 stop6h 54m

San Diego

dom. 3/2

9:55 pm-8:51 am

1 stop8h 56m

$277

St. LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

dom. 1/19

1:45 pm-7:53 pm

2 stops8h 08m

San Diego

mié. 1/22

10:39 am-8:02 pm

1 stop7h 23m

$281

St. LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

mié. 1/15

5:50 pm-9:55 pm

1 stop6h 05m

San Diego

mié. 1/22

9:30 am-2:55 pm

Nonstop3h 25m

$330

St. LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

sáb. 1/18

7:09 pm-11:52 pm

1 stop6h 43m

$54

St. LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

dom. 1/19

6:00 am-10:55 am

1 stop6h 55m

$138

St. LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

mar. 2/18

5:20 pm-8:57 am

3 stops41h 37m

$150

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 15 results
1
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Compare providers for flights from St. Louis to San Diego

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 St. Louis to San Diego in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*2 stars
CheapOairPrice Accuracy2 starsTrust Score*2 stars
GotogatePrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub 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 St. Louis-San Diego 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 St. Louis to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from St. Louis to San Diego

Get recent, data-driven insights about flights from St. Louis to San Diego including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from St. Louis to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to San Diego. Price data was last updated on December 13, 2024.

To ensure you get the cheapest price possible for a flight from St. Louis to San Diego, you should look to book at least 60 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from St. Louis to San Diego?

Currently, September is the cheapest month in which you can book a flight from St. Louis to San Diego (average of $266). Flying from St. Louis to San Diego in March is currently the most expensive (average of $339). 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 STL to SAN?

Find hourly flight availability from St. Louis to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 18, 2024.

Unlike at noon, when flights are generally more expensive, you can save up to 38% on flights from St. Louis to San Diego by exploring options for tickets in the evening.

What is the cheapest day to fly from St. Louis to San Diego?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to San Diego. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their St. Louis to San Diego flight should consider departing on Tuesday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated diciembre 18, 2024.
Peruse reviews from past customers who have flown with Delta, American Airlines and Southwest from St. Louis to San Diego to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Alaska Airlines
8.0
Very good
9,554 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines
7.4
Good
9,055 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Related info for your journey

Find useful and relevant information for your journey from St. Louis to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Flying on Frontier is currently your cheapest option to San Diego, with prices starting at $195. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and Delta, with the lowest prices starting at $230 and $276, respectively. You may be able to fly from St. Louis to San Diego for 40% 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 Frontier ($54), Delta ($138), and Southwest ($163).

  • What are the cheapest flights from St. Louis to San Diego?

    Looking for the cheapest flight from St. Louis to San Diego? While on average our users pay $444, our data indicates the cheapest price to be $216. The most popular route (Lambert-St Louis - San Diego), is priced around $163.

  • 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 Phoenix most often.

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

    The majority of Phoenix visitors spend their time at Chase Field, Desert Ridge Marketplace, and Phoenix Symphony Hall. Travelers on a layover in Phoenix can visit Chase Field, Desert Ridge Marketplace, and Phoenix Symphony Hall, by traveling 4.0 mi, 16.7 mi, and 4.3 mi, respectively after landing at Phoenix Sky Harbor Intl. Travelers can rent a car at Phoenix Sky Harbor Intl for an average daily rate of $58 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 Denver the least frequently.

  • 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.

  • What is the cheapest month to book a flight from St. Louis to San Diego?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to San Diego (average of $266). Flying from St. Louis to San Diego in March is currently the most expensive (average of $339). 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.

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Alternative routes for St. Louis to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from St. Louis to San Diego

Discover the top 5 airlines that operate flights from St. Louis to San Diego. 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 diciembre 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$116Average$195FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$198Average$361FlexibilityNo cancel feeOn-time71%
DeltaCheapest$235Average$310FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$246Average$376FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$345Average$492FlexibilityNo cancel feeOn-time63%
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