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$69+ 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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SAN
Jul 30 — Aug 61
From?
To?
Tue 7/30
Tue 8/6
1 adult, Economy
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The best prices from Lambert-St Louis to San Diego are usually found in April or September, booked 52 days in advance, depart on a Tuesday or Monday 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 July 25, 2024.

Popular in

December

Cheapest in

April

Round-trip from

$108
(mytrip.com)

One-way from

$69
(mytrip.com)
High demand for flights, 25% potential price rise
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Best time to find cheap flights, 31% potential price drop
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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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What is the cheapest day to fly round-trip from St. Louis to San Diego?

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.

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

Travelers have found it’s best to book a flight 53 days in advance to save up to 101% 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 53 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 $339, or $422 for flights within the next 24 hours.

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

The best pricing can be found in the month of April. Prices to San Diego from St. Louis average $342. You can even find prices in April for less than $342, as users have found deals to San Diego from as low as $103. 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 33%.

What is the cheapest time of day to fly from STL to SAN?

Unlike at noon, when flights are generally more expensive, you can save up to 53% on flights from St. Louis to San Diego by exploring options for tickets in the evening.

Cheap St. Louis to San Diego flights in July & August 2024

Find cheap flight options from St. Louis to San Diego specifically for the months of July and August 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Prices were last updated on July 25, 2024.
These are some of the most attractive deals on flights from St. Louis to San Diego in 2024. Check back in a little while for more flight options.
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/211:48 pmSTL - SAN
1 stop5h 29mMultiple Airlines
Tue 8/2710:18 amSAN - STL
1 stop6h 30mMultiple Airlines
Deal found 7/25$108
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/211:48 pmSTL - SAN
1 stop5h 29mMultiple Airlines
Sun 8/258:19 pmSAN - STL
1 stop13h 08mMultiple Airlines
Deal found 7/25$114
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2312:27 pmSTL - SAN
1 stop24h 26mFrontier
Fri 8/309:12 pmSAN - STL
1 stop20h 43mFrontier
Deal found 7/24$138
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/237:48 pmSTL - SAN
1 stop14h 19mFrontier
Mon 8/269:12 pmSAN - STL
1 stop21h 24mFrontier
Deal found 7/25$139
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/207:48 pmSTL - SAN
1 stop14h 19mFrontier
Fri 8/239:12 pmSAN - STL
1 stop20h 43mFrontier
Deal found 7/25$141
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1912:37 pmSTL - SAN
1 stop7h 33mFrontier
Mon 8/2612:33 pmSAN - STL
1 stop5h 51mFrontier
Deal found 7/25$142
This mytrip.com deal was found by Cheapflights users on 7/23. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1811:12 pmSTL - SAN
1 stop18h 22mFrontier
Tue 8/204:56 pmSAN - STL
1 stop26h 26mFrontier
Deal found 7/23$143
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1811:12 pmSTL - SAN
1 stop12h 59mFrontier
Mon 8/2612:33 pmSAN - STL
1 stop5h 51mFrontier
Deal found 7/25$144
This Gotogate deal was found by Cheapflights users on 7/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/167:48 pmSTL - SAN
1 stop19h 35mFrontier
Sun 8/184:51 pmSAN - STL
1 stop16h 56mFrontier
Deal found 7/24$146

St. Louis to San Diego 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and San Diego in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
These are some of the most attractive deals on flights from St. Louis to San Diego in 2024. Check back in a little while for more flight options.
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/211:48 pmSTL - SAN
1 stop5h 29mMultiple Airlines
Tue 8/2710:18 amSAN - STL
1 stop6h 30mMultiple Airlines
Deal found 7/25$108
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/211:48 pmSTL - SAN
1 stop5h 29mMultiple Airlines
Sun 8/258:19 pmSAN - STL
1 stop13h 08mMultiple Airlines
Deal found 7/25$114
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/25:20 pmSTL - SAN
1 stop15h 40mFrontier
Sat 10/57:05 pmSAN - STL
1 stop26h 14mFrontier
Deal found 7/24$137
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2312:27 pmSTL - SAN
1 stop24h 26mFrontier
Fri 8/309:12 pmSAN - STL
1 stop20h 43mFrontier
Deal found 7/24$138
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/237:48 pmSTL - SAN
1 stop14h 19mFrontier
Mon 8/269:12 pmSAN - STL
1 stop21h 24mFrontier
Deal found 7/25$139
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/55:20 pmSTL - SAN
1 stop6h 01mFrontier
Sat 9/71:00 pmSAN - STL
1 stop8h 33mFrontier
Deal found 7/25$140
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/207:48 pmSTL - SAN
1 stop14h 19mFrontier
Fri 8/239:12 pmSAN - STL
1 stop20h 43mFrontier
Deal found 7/25$141
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1912:37 pmSTL - SAN
1 stop7h 33mFrontier
Mon 8/2612:33 pmSAN - STL
1 stop5h 51mFrontier
Deal found 7/25$142
This mytrip.com deal was found by Cheapflights users on 7/23. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1811:12 pmSTL - SAN
1 stop18h 22mFrontier
Tue 8/204:56 pmSAN - STL
1 stop26h 26mFrontier
Deal found 7/23$143

St. Louis to San Diego flights leaving soon

Find last-minute flight options from St. Louis to San Diego for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
Have a look at some of the last-minute flights available departing from St. Louis to San Diego. To prevent any unwanted surprises, users should verify their flight info before booking.
This Frontier deal was found by Cheapflights users on 7/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/811:00 pmSTL - SAN
1 stop11h 25mFrontier
Tue 8/2010:18 amSAN - STL
1 stop6h 30mFrontier
Deal found 7/24$147
This mytrip.com deal was found by Cheapflights users on 7/23. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/210:32 pmSTL - SAN
1 stop20h 48mFrontier
Fri 8/169:12 pmSAN - STL
1 stop20h 43mFrontier
Deal found 7/23$168
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/710:32 pmSTL - SAN
1 stop20h 43mFrontier
Sun 8/114:05 pmSAN - STL
1 stop17h 17mFrontier
Deal found 7/24$171
This Gotogate deal was found by Cheapflights users on 7/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/410:32 pmSTL - SAN
1 stop13h 51mFrontier
Mon 8/123:58 pmSAN - STL
1 stop26h 38mFrontier
Deal found 7/25$173
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/25:19 pmSTL - SAN
1 stop5h 53mFrontier
Thu 8/88:48 pmSAN - STL
1 stop10h 37mFrontier
Deal found 7/24$176
This CheapOair deal was found by Cheapflights users on 7/25. 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.
Mon 8/54:02 pmSTL - SAN
1 stop26h 40mSpirit Airlines
Tue 8/134:27 pmSAN - STL
1 stop18h 31mSpirit Airlines
Deal found 7/25$177
This CheapOair deal was found by Cheapflights users on 7/25. 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.
Fri 8/210:32 pmSTL - SAN
1 stop20h 48mFrontier
Fri 8/169:12 pmSAN - STL
1 stop20h 43mFrontier
Deal found 7/25$180
This CheapOair deal was found by Cheapflights users on 7/24. 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.
Mon 8/54:02 pmSTL - SAN
1 stop9h 15mMultiple Airlines
Mon 8/1210:11 pmSAN - STL
1 stop20h 25mMultiple Airlines
Deal found 7/24$182
This FareScan deal was found by Cheapflights users on 7/25. 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 FareScan is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/54:02 pmSTL - SAN
1 stop9h 15mSpirit Airlines
Tue 8/133:05 pmSAN - STL
2 stops19h 53mSpirit Airlines
Deal found 7/25$195

One-way flights to San Diego from St. Louis

Search for one-way flight options from St. Louis to San Diego. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
Users in need of a one-way flight from St. Louis to San Diego can choose from these deals. Users in need of a round-trip flight from St. Louis to San Diego instead should update the search form at the top of page.
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/107:29 pmSTL - SAN
1 stop26h 12mFrontier
Deal found 7/25$69
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/177:48 pmSTL - SAN
1 stop13h 34mFrontier
Deal found 7/24$74
This mytrip.com deal was found by Cheapflights users on 7/23. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/139:36 pmSTL - SAN
1 stop14h 35mFrontier
Deal found 7/23$75
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/811:00 pmSTL - SAN
1 stop15h 32mFrontier
Deal found 7/24$82
This FareScan deal was found by Cheapflights users on 7/23. 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 FareScan is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1311:26 amSTL - SAN
3 stops31h 51mSpirit Airlines
Deal found 7/23$84
This FareScan deal was found by Cheapflights users on 7/24. 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 FareScan is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/54:02 pmSTL - SAN
1 stop9h 15mSpirit Airlines
Deal found 7/24$86
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/3010:32 pmSTL - SAN
1 stop13h 46mFrontier
Deal found 7/24$88
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/3010:32 pmSTL - SAN
1 stop22h 53mFrontier
Deal found 7/25$89
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/3010:32 pmSTL - SAN
1 stop22h 53mFrontier
Deal found 7/25$90

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 2,752,877 searches. Data last updated July 25, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$108 - $304

Route

Depart

Return

Price

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Wed 8/21

1 stop5h 29m

San Diego

Tue 8/27

1 stop6h 30m

$108

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Wed 8/21

1 stop5h 29m

San Diego

Sun 8/25

1 stop13h 08m

$114

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Wed 10/2

1 stop15h 40m

San Diego

Sat 10/5

1 stop26h 14m

$137

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Fri 8/23

1 stop24h 26m

San Diego

Fri 8/30

1 stop20h 43m

$138

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Fri 8/23

1 stop14h 19m

San Diego

Mon 8/26

1 stop21h 24m

$139

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Wed 8/21

1 stop5h 29m

San Diego

Sat 8/24

2 stops21h 00m

$157

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Mon 8/12

1 stop9h 15m

San Diego

Mon 8/19

2 stops21h 00m

$165

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Sat 8/24

1 stop6h 34m

San Diego

Sat 8/31

1 stop7h 05m

$256

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Fri 11/1

1 stop10h 17m

San Diego

Sat 11/9

2 stops25h 04m

$304

Flights are sorted by cheapest first

Deals found on 7/25

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 July 23, 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 52 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.
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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 July 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
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.
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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.

Temperature and rainfall in San Diego by month

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

SAN

Temperature

57.2 - 71.6 °F

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 July 25, 2024.
Peruse reviews from past customers who have flown with Frontier, Spirit Airlines and Delta 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.
Alaska Airlines
8.1
Very good
9,365 reviews

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

Alaska Airlines
8.1
Very good
9,365 reviews
Alaska Airlines
8.1
Very good
9,365 reviews

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

Delta
8.0
Very good
9,630 reviews
Alaska Airlines
8.1
Very good
9,365 reviews

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

United Airlines
7.4
Good
10,000 reviews
Alaska Airlines
8.1
Very good
9,365 reviews

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

American Airlines
7.3
Good
10,000 reviews
Alaska Airlines
8.1
Very good
9,365 reviews

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

Spirit Airlines
6.4
Okay
8,407 reviews
Alaska Airlines
8.1
Very good
9,365 reviews

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

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 airports do I use to fly from St. Louis to San Diego?

    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 3h 45m for a nonstop flight. There is 1 flight from Lambert-St Louis to San Diego per day from 6 airlines.

  • Can I find flights from St. Louis to San Diego for under $200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to San Diego for under $200. The cheapest flight booked recently is on Multiple Airlines for just $108, but on average you can expect to pay $142.

  • Are there nonstop flights from St. Louis to San Diego for under $400 on Cheapflights?

    Cheapflights has at least 1 direct flight from St. Louis to San Diego under $400. A good price for a nonstop flight from St. Louis to San Diego is less than $389.

  • Are there last-minute flights available from St. Louis to San Diego for under $200?

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

  • 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 $137. Another option worth looking into is Spirit Airlines, starting at $157 round trip. You may be able to fly from St. Louis to San Diego for 59% 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 ($69), Spirit Airlines ($84), and Alaska Airlines ($128).

  • What does STL to SAN mean?

    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.

  • 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 Denver most often.

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

    The majority of Denver visitors spend their time at Coors Field, 16th Street Mall, and Paramount Theatre. Travelers on a layover in Denver can visit Coors Field, 16th Street Mall, and Paramount Theatre, by traveling 18.4 mi, 18.7 mi, and 18.6 mi, respectively after landing at Denver Intl. Travelers can rent a car at Denver Intl for an average daily rate of $83 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 Phoenix the least frequently.

  • Can I find deals for flights from St. Louis to San Diego that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to San Diego flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to San Diego with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to San Diego flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from St. Louis to San Diego that allow pets onboard?

    Many airlines flying from St. Louis to San Diego offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to San Diego?

    Yes, you can often find last-minute deals on St. Louis to San Diego flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to San Diego flight deals updated?

    The St. Louis to San Diego flight deals you see on this page were last updated on 7/25.

  • What are the most popular airlines that fly from St. Louis to San Diego?

    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.

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

    Currently, October is the cheapest month in which you can book a flight from St. Louis to San Diego (average of $289). Flying from St. Louis to San Diego in July is currently the most expensive (average of $343). 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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Top 6 airlines flying from St. Louis to San Diego

Discover the top 6 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 2,752,877 searches. Data last updated July 25, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$74Average$216FlexibilityNo cancel feeOn-time65%
FrontierCheapest$98Average$190FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$200Average$409FlexibilityNo cancel feeOn-time71%
DeltaCheapest$235Average$345FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$246Average$413FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$617Average$718FlexibilityNo cancel feeOn-time75%
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Search flights from St. Louis to San Diego by cabin class

Find flights from St. Louis to San Diego, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from St. Louis to San Diego

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 July 25, 2024.
1%of flight departuresEarly morningMidnight to 6 am
38%of flight departuresMorning6 am to noon
23%of flight departuresAfternoonNoon to 6 pm
38%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to San Diego

Explore weekly flight availability from St. Louis to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 25, 2024.
Sunday3daily flights
Monday1daily flight
Tuesday1daily flight
Wednesday1daily flight
Thursday1daily flight
Friday1daily flight
Saturday1daily flight

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