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Cheap flights from St. Louis to San Diego (STL - SAN) from $57

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 5/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — SAN
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
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 19 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 May 16, 2024.

Popular in

December

Cheapest in

April

Round-trip from

$288

One-way from

$179
High demand for flights, 22% potential price rise
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Best time to find cheap flights, 34% 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 20 days in advance to save up to 110% 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 20 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 $338, or $431 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 $358. You can even find prices in April for less than $358, 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 27%.

When is the cheapest time to fly from St. Louis to San Diego (STL - SAN)?

Unlike at noon, when flights are generally more expensive, you can save up to 50% on flights from St. Louis to San Diego by exploring options for tickets in the evening.

Cheap Frontier flights from St. Louis to San Diego

Explore cheap flight options specifically provided by Frontier for the route between St. Louis and San Diego. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Take a peek at the cheapest Frontier flights we've detected traveling from St. Louis to San Diego. Come back soon if you're not finding the exact deal you're looking for.
Mon 6/108:22 pmSTL - SAN
1 stop12h 39mFrontier
Thu 6/1310:14 pmSAN - STL
1 stop11h 40mFrontier
Deal found 5/14$140
Mon 6/37:23 pmSTL - SAN
1 stop16h 51mFrontier
Thu 6/68:29 pmSAN - STL
1 stop12h 13mFrontier
Deal found 5/16$142
Wed 5/228:04 pmSTL - SAN
1 stop13h 00mFrontier
Sun 5/2611:30 amSAN - STL
1 stop9h 02mFrontier
Deal found 5/15$146
Mon 6/37:23 pmSTL - SAN
1 stop16h 51mFrontier
Fri 6/78:21 pmSAN - STL
1 stop12h 21mFrontier
Deal found 5/16$151
Sat 6/157:29 pmSTL - SAN
1 stop14h 16mFrontier
Sat 6/225:40 pmSAN - STL
1 stop18h 57mFrontier
Deal found 5/16$154
Mon 6/108:22 pmSTL - SAN
2 stops25h 02mFrontier
Thu 6/1310:14 pmSAN - STL
1 stop11h 40mFrontier
Deal found 5/14$155
Fri 5/246:40 pmSTL - SAN
1 stop17h 28mFrontier
Tue 5/288:04 amSAN - STL
1 stop23h 32mFrontier
Deal found 5/16$156
Sat 6/88:02 pmSTL - SAN
1 stop12h 59mFrontier
Mon 6/102:02 pmSAN - STL
1 stop22h 45mFrontier
Deal found 5/15$158
Mon 6/108:22 pmSTL - SAN
1 stop12h 39mFrontier
Sun 6/168:31 pmSAN - STL
1 stop12h 11mFrontier
Deal found 5/15$159

Cheap Spirit Airlines flights from St. Louis to San Diego

Explore cheap flight options specifically provided by Spirit Airlines for the route between St. Louis and San Diego. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
To aid your search, here are some of the cheapest Spirit Airlines flights we've found from St. Louis to San Diego. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Mon 6/102:41 pmSTL - SAN
2 stops25h 49mSpirit Airlines
Tue 6/189:19 pmSAN - STL
1 stop13h 46mSpirit Airlines
Deal found 5/15$150
Mon 5/274:05 pmSTL - SAN
1 stop19h 09mSpirit Airlines
Thu 5/307:58 pmSAN - STL
1 stop17h 16mSpirit Airlines
Deal found 5/14$153
Wed 6/121:55 pmSTL - SAN
3 stops27h 41mSpirit Airlines
Tue 6/189:19 pmSAN - STL
1 stop13h 46mSpirit Airlines
Deal found 5/15$172
Tue 6/1111:57 amSTL - SAN
3 stops22h 37mSpirit Airlines
Tue 6/189:19 pmSAN - STL
1 stop13h 46mSpirit Airlines
Deal found 5/15$175
Tue 6/113:23 pmSTL - SAN
2 stops18h 01mSpirit Airlines
Tue 6/189:19 pmSAN - STL
1 stop13h 46mSpirit Airlines
Deal found 5/15$177
Mon 6/102:41 pmSTL - SAN
2 stops25h 49mSpirit Airlines
Tue 6/182:10 pmSAN - STL
2 stops20h 55mSpirit Airlines
Deal found 5/15$179
Mon 6/102:41 pmSTL - SAN
2 stops25h 49mSpirit Airlines
Thu 6/2010:14 pmSAN - STL
1 stop14h 02mSpirit Airlines
Deal found 5/15$186
Wed 6/261:55 pmSTL - SAN
1 stop10h 32mSpirit Airlines
Sun 6/308:16 pmSAN - STL
1 stop15h 35mSpirit Airlines
Deal found 5/15$188
Wed 6/121:55 pmSTL - SAN
3 stops27h 41mSpirit Airlines
Tue 6/182:10 pmSAN - STL
2 stops20h 55mSpirit Airlines
Deal found 5/15$201

Cheap St. Louis to San Diego flights in May & June 2024

Find cheap flight options from St. Louis to San Diego specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 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.
Wed 6/121:55 pmSTL - SAN
1 stop8h 35mMultiple Airlines
Sun 6/164:52 pmSAN - STL
1 stop15h 50mMultiple Airlines
Deal found 5/15$139
Mon 6/108:22 pmSTL - SAN
1 stop12h 39mFrontier
Thu 6/1310:14 pmSAN - STL
1 stop11h 40mFrontier
Deal found 5/14$140
Tue 6/113:47 pmSTL - SAN
1 stop7h 35mMultiple Airlines
Tue 6/189:19 pmSAN - STL
1 stop13h 46mMultiple Airlines
Deal found 5/15$141
Mon 6/37:23 pmSTL - SAN
1 stop16h 51mFrontier
Thu 6/68:29 pmSAN - STL
1 stop12h 13mFrontier
Deal found 5/16$142
Wed 6/51:55 pmSTL - SAN
1 stop10h 32mMultiple Airlines
Sun 6/94:52 pmSAN - STL
2 stops27h 07mMultiple Airlines
Deal found 5/15$144
Wed 5/228:04 pmSTL - SAN
1 stop13h 00mFrontier
Sun 5/2611:30 amSAN - STL
1 stop9h 02mFrontier
Deal found 5/15$146
Wed 6/51:55 pmSTL - SAN
1 stop10h 32mMultiple Airlines
Sun 6/98:24 pmSAN - STL
1 stop12h 18mMultiple Airlines
Deal found 5/15$147
Mon 6/102:41 pmSTL - SAN
2 stops25h 49mSpirit Airlines
Tue 6/189:19 pmSAN - STL
1 stop13h 46mSpirit Airlines
Deal found 5/15$150
Mon 6/37:23 pmSTL - SAN
1 stop16h 51mFrontier
Fri 6/78:21 pmSAN - STL
1 stop12h 21mFrontier
Deal found 5/16$151

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 2,637,452 searches. Data last updated May 16, 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.
Wed 6/121:55 pmSTL - SAN
1 stop8h 35mMultiple Airlines
Sun 6/164:52 pmSAN - STL
1 stop15h 50mMultiple Airlines
Deal found 5/15$139
Mon 6/108:22 pmSTL - SAN
1 stop12h 39mFrontier
Thu 6/1310:14 pmSAN - STL
1 stop11h 40mFrontier
Deal found 5/14$140
Tue 6/113:47 pmSTL - SAN
1 stop7h 35mMultiple Airlines
Tue 6/189:19 pmSAN - STL
1 stop13h 46mMultiple Airlines
Deal found 5/15$141
Mon 6/37:23 pmSTL - SAN
1 stop16h 51mFrontier
Thu 6/68:29 pmSAN - STL
1 stop12h 13mFrontier
Deal found 5/16$142
Wed 6/51:55 pmSTL - SAN
1 stop10h 32mMultiple Airlines
Sun 6/94:52 pmSAN - STL
2 stops27h 07mMultiple Airlines
Deal found 5/15$144
Wed 5/228:04 pmSTL - SAN
1 stop13h 00mFrontier
Sun 5/2611:30 amSAN - STL
1 stop9h 02mFrontier
Deal found 5/15$146
Wed 6/51:55 pmSTL - SAN
1 stop10h 32mMultiple Airlines
Sun 6/98:24 pmSAN - STL
1 stop12h 18mMultiple Airlines
Deal found 5/15$147
Mon 6/102:41 pmSTL - SAN
2 stops25h 49mSpirit Airlines
Tue 6/189:19 pmSAN - STL
1 stop13h 46mSpirit Airlines
Deal found 5/15$150
Mon 6/37:23 pmSTL - SAN
1 stop16h 51mFrontier
Fri 6/78:21 pmSAN - STL
1 stop12h 21mFrontier
Deal found 5/16$151

Non-stop flights to San Diego from St. Louis

Discover non-stop flight options from St. Louis to San Diego. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Consider booking one of these non-stop flights heading from St. Louis to San Diego. Search for alternative flights from St. Louis to San Diego by utilizing the search form above.
Mon 5/206:15 amSTL - SAN
Nonstop4h 00mSouthwest
Thu 5/235:35 pmSAN - STL
Nonstop3h 30mSouthwest
Deal found 5/15$833

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 2,637,452 searches. Data last updated May 16, 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.
Wed 5/228:04 pmSTL - SAN
1 stop13h 00mFrontier
Sun 5/2611:30 amSAN - STL
1 stop9h 02mFrontier
Deal found 5/15$146
Wed 5/228:04 pmSTL - SAN
1 stop13h 00mFrontier
Mon 5/278:21 pmSAN - STL
1 stop23h 18mFrontier
Deal found 5/15$239
Tue 5/2110:34 amSTL - SAN
2 stops24h 40mSpirit Airlines
Tue 6/49:12 pmSAN - STL
1 stop13h 53mSpirit Airlines
Deal found 5/14$240
Thu 5/237:23 pmSTL - SAN
1 stop25h 58mFrontier
Mon 5/278:21 pmSAN - STL
1 stop23h 18mFrontier
Deal found 5/15$247
Thu 5/237:23 pmSTL - SAN
1 stop25h 58mFrontier
Mon 5/2711:04 amSAN - STL
1 stop21h 09mFrontier
Deal found 5/16$255
Tue 5/2110:34 amSTL - SAN
2 stops24h 40mSpirit Airlines
Tue 6/46:15 amSAN - STL
2 stops28h 50mSpirit Airlines
Deal found 5/14$272
Thu 5/235:21 amSTL - SAN
2 stops12h 36mMultiple Airlines
Tue 5/289:12 pmSAN - STL
1 stop11h 34mMultiple Airlines
Deal found 5/15$279
Tue 5/2112:15 pmSTL - SAN
3 stops22h 59mMultiple Airlines
Tue 6/46:15 amSAN - STL
2 stops28h 50mMultiple Airlines
Deal found 5/14$304
Fri 5/248:45 pmSTL - SAN
1 stop12h 29mFrontier
Mon 5/278:21 pmSAN - STL
1 stop11h 52mFrontier
Deal found 5/15$338

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 2,637,452 searches. Data last updated May 16, 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.
Wed 5/2211:36 amSTL - SAN
1 stop12h 49mSpirit Airlines
Deal found 5/15$57
Tue 5/212:12 pmSTL - SAN
1 stop7h 09mFrontier
Deal found 5/15$73
Sat 6/88:02 pmSTL - SAN
1 stop12h 59mFrontier
Deal found 5/15$80
Tue 6/253:47 pmSTL - SAN
1 stop7h 35mFrontier
Deal found 5/15$85
Mon 6/178:22 pmSTL - SAN
1 stop12h 39mFrontier
Deal found 5/15$91
Mon 5/274:05 pmSTL - SAN
1 stop19h 09mSpirit Airlines
Deal found 5/15$92
Tue 6/2511:57 amSTL - SAN
2 stops24h 05mSpirit Airlines
Deal found 5/15$98
Mon 7/2212:12 pmSTL - SAN
1 stop6h 10mFrontier
Deal found 5/15$100
Thu 7/118:57 pmSTL - SAN
1 stop12h 10mFrontier
Deal found 5/15$107

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 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$139 - $246

Route

Depart

Return

Price

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Wed 6/12

1 stop8h 35m

San Diego

Sun 6/16

1 stop15h 50m

$139

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Mon 6/10

1 stop12h 39m

San Diego

Thu 6/13

1 stop11h 40m

$140

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Tue 6/11

1 stop7h 35m

San Diego

Tue 6/18

1 stop13h 46m

$141

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Mon 6/3

1 stop16h 51m

San Diego

Thu 6/6

1 stop12h 13m

$142

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Wed 6/5

1 stop10h 32m

San Diego

Sun 6/9

2 stops27h 07m

$144

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Wed 5/22

1 stop13h 00m

San Diego

Sun 5/26

1 stop9h 02m

$146

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Mon 6/10

2 stops25h 49m

San Diego

Tue 6/18

1 stop13h 46m

$150

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Mon 5/27

1 stop19h 09m

San Diego

Thu 5/30

1 stop17h 16m

$153

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Sun 6/9

1 stop8h 34m

San Diego

Fri 6/21

1 stop5h 43m

$246

Flights are sorted by cheapest first

Deals found on 5/15

When is the best time to 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 May 10, 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 19 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.
Search Deals

When is the cheapest time 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 May 12, 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 Sunday 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.
Search Deals

Average price of flights to San Diego by month

Plan your trip from St. Louis to San Diego by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to San Diego is currently $87 while a round-trip flight costs $156. Price data was last updated on May 12, 2024.

Currently, October is the cheapest month in which you can book a flight from St. Louis to San Diego (average of $288). Flying from St. Louis to San Diego in July 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.

January

$292

February

$297

March

$339

April

$298

May

$297

June

$346

July

$356

August

$308

September

$298

October

$288

November

$337

December

$305

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

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 May 16, 2024.
Peruse reviews from past customers who have flown with Frontier, Spirit Airlines and United Airlines 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
9,157 reviews
Check prices

Overall

8.1

Entertainment

7.3

Food

7.3

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

Alaska Airlines
8.1
Very good
9,157 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Overall

8.1

Entertainment

7.3

Food

7.3

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

Delta
8.0
Very good
10,673 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Overall

8.1

Entertainment

7.3

Food

7.3

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

United Airlines
7.4
Good
10,924 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Overall

8.1

Entertainment

7.3

Food

7.3

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

American Airlines
7.3
Good
14,514 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Overall

8.1

Entertainment

7.3

Food

7.3

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

Spirit Airlines
6.4
Okay
8,672 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Overall

8.1

Entertainment

7.3

Food

7.3

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

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 40m 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 $139, but on average you can expect to pay $151.

  • Are there nonstop flights from St. Louis to San Diego for under $900 on Cheapflights?

    Cheapflights has at least 1 direct flight from St. Louis to San Diego under $900. A good price for a nonstop flight from St. Louis to San Diego is less than $833.

  • 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 $140. Another option worth looking into is Spirit Airlines, starting at $150 round trip. You may be able to fly from St. Louis to San Diego for 60% 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 Spirit Airlines ($57), Frontier ($73), and Alaska Airlines ($200).

  • 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 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 Civic Center Park. Travelers on a layover in Denver can visit Coors Field, 16th Street Mall, and Civic Center Park, by traveling 18.4 mi, 18.7 mi, and 18.7 mi, respectively after landing at Denver Intl. Travelers can rent a car at Denver Intl for an average daily rate of $43 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 5/16.

See more FAQs

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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 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 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$95Average$271FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
FrontierCheapest$98Average$203FlexibilityNo cancel feeOn-time62%
Search Frontier flights
American AirlinesCheapest$207Average$433FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$235Average$369FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$286Average$431FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Alaska AirlinesCheapest$617Average$718FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
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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.
First Class
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Prem Econ 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 May 16, 2024.
24%of flight departuresEarly morningMidnight to 6 am
38%of flight departuresMorning6 am to noon
38%of flight departuresAfternoonNoon to 6 pm
0%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 May 16, 2024.
Sunday3daily flights
Monday1daily flight
Tuesday1daily flight
Wednesday1daily flight
Thursday1daily flight
Friday1daily flight
Saturday1daily flight

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How does Cheapflights help users find flights from St. Louis to San Diego?

When you search for this flight from St. Louis to San Diego, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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Not ready to book yet? You can track prices for flights from St. Louis to San Diego on Cheapflights with our Price Alert feature and get notified when better prices are available.

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