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Cheap flights from St. Louis to San Diego from $54

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to San Diego departing on 1/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to San Diego

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to San Diego that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to San Diego.

Cheap last minute flights

Planning a quick getaway from St. Louis to San Diego? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to San Diego, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to San Diego

Find recent round-trip train or bus tickets from St. Louis to San Diego.

All round-trip flight deals to San Diego

The cheapest plane tickets to San Diego found on KAYAK recently.
12:00 pm - 9:16 amSTL-SAN
23h 16m1 stop
6:25 am - 9:06 amSAN-STL
24h 41m1 stop
$136Frontier
Find Deal
Thu, Jan 2 - Tue, Jan 7
6:46 pm - 10:58 amSTL-SAN
18h 12m1 stop
6:25 am - 8:13 amSAN-STL
23h 48m1 stop
$138Frontier
Find Deal
Fri, Dec 6 - Tue, Dec 10
5:40 am - 12:36 pmSTL-SAN
8h 56m1 stop
4:30 pm - 11:57 pmSAN-STL
5h 27m1 stop
$247American Airlines
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Thu, Jan 16 - Tue, Jan 21
5:00 pm - 10:50 pmSTL-SAN
7h 50m1 stop
10:15 pm - 9:36 amSAN-STL
9h 21m1 stop
$276Delta
Find Deal
Sat, Mar 1 - Mon, Mar 3
4:43 pm - 10:20 pmSTL-SAN
7h 37m1 stop
10:15 am - 8:43 pmSAN-STL
8h 28m2 stops
$281United Airlines
Find Deal
Sat, Jan 4 - Wed, Jan 8
7:15 am - 12:36 pmSTL-SAN
7h 21m1 stop
4:04 pm - 12:27 amSAN-STL
6h 23m1 stop
$301United Airlines
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Thu, Apr 17 - Mon, Apr 21
2:13 pm - 7:09 pmSTL-SAN
6h 56m1 stop
10:15 pm - 9:36 amSAN-STL
9h 21m1 stop
$307Delta
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Fri, Feb 28 - Mon, Mar 3
5:35 am - 9:10 amSTL-SAN
5h 35m1 stop
6:50 am - 12:15 pmSAN-STL
3h 25mnonstop
$343Southwest
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Fri, Feb 21 - Mon, Feb 24
5:50 pm - 10:30 pmSTL-SAN
6h 40m1 stop
8:45 am - 2:10 pmSAN-STL
3h 25mnonstop
$373Southwest
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Sun, Jan 26 - Sat, Feb 1
2:15 pm - 8:54 pmSTL-SAN
8h 39m1 stop
1:45 pm - 11:59 pmSAN-STL
8h 14m1 stop
$453American Airlines
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Mon, Dec 9 - Sat, Dec 14
7:09 pm - 11:52 pmSTL-SAN
6h 43m1 stop
$54Frontier
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Sat, Jan 18
7:09 pm - 11:52 pmSTL-SAN
6h 43m1 stop
$61Frontier
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Wed, Jan 22
6:00 am - 11:54 amSTL-SAN
7h 54m1 stop
$138Delta
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Tue, Dec 24
1:39 pm - 7:53 pmSTL-SAN
8h 14m2 stops
$143United Airlines
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Tue, Dec 17
11:00 am - 4:10 pmSTL-SAN
7h 10m2 stops
$159Southwest
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Tue, Jan 21
1:39 pm - 7:53 pmSTL-SAN
8h 14m2 stops
$173United Airlines
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Sat, Dec 14
11:05 am - 1:15 pmSTL-SAN
4h 10mnonstop
$174Southwest
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Tue, Jan 21
6:00 am - 10:55 amSTL-SAN
6h 55m1 stop
$199Delta
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Sun, Feb 23
6:23 pm - 10:45 pmSTL-SAN
6h 22m1 stop
$219American Airlines
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Thu, Mar 13
2:17 pm - 6:23 pmSTL-SAN
6h 06m1 stop
$409American Airlines
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Sat, Dec 28
5:38 pm - 11:56 pmSTL-SAN
8h 18m1 stop
6:25 am - 8:13 amSAN-STL
23h 48m1 stop
$243Frontier
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Mon, Nov 25 - Thu, Dec 19
10:17 pm - 8:06 pmSTL-SAN
23h 49m1 stop
6:25 am - 12:06 amSAN-STL
15h 41m1 stop
$272Frontier
Find Deal
Tue, Nov 26 - Thu, Nov 28
5:38 pm - 11:56 pmSTL-SAN
8h 18m1 stop
8:23 am - 11:59 pmSAN-STL
13h 36m2 stops
Mon, Nov 25 - Fri, Nov 29
9:20 am - 6:40 amSTL-SAN
23h 20m3 stops
6:06 pm - 7:55 pmSAN-STL
23h 49m3 stops
Mon, Nov 25 - Thu, Dec 19
7:09 am - 8:37 amSTL-SAN
27h 28m1 stop
7:45 pm - 12:43 pmSAN-STL
14h 58m2 stops
$729United Airlines
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Mon, Nov 25 - Wed, Nov 27
7:00 am - 2:57 pmSTL-SAN
9h 57m1 stop
12:44 pm - 1:27 pmSAN-STL
22h 43m2 stops
$731Alaska Airlines
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Tue, Nov 26 - Thu, Nov 28
8:05 pm - 10:05 pmSTL-SAN
4h 00mnonstop
4:10 pm - 12:40 amSAN-STL
6h 30m1 stop
$759Southwest
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Mon, Nov 25 - Thu, Dec 19
10:10 am - 5:50 pmSTL-SAN
9h 40m2 stops
6:56 pm - 12:43 pmSAN-STL
15h 47m2 stops
$764United Airlines
Find Deal
Tue, Nov 26 - Thu, Nov 28
7:00 am - 4:20 pmSTL-SAN
11h 20m2 stops
6:56 pm - 4:56 pmSAN-STL
20h 00m1 stop
$807Alaska Airlines
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Fri, Nov 22 - Thu, Nov 28
8:05 pm - 10:05 pmSTL-SAN
4h 00mnonstop
3:50 pm - 11:10 pmSAN-STL
5h 20m1 stop
$1,002Southwest
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Mon, Nov 25 - Fri, Nov 29
4:45 pm - 6:55 pmSTL-SAN
4h 10mnonstop
9:30 am - 2:55 pmSAN-STL
3h 25mnonstop
$410Southwest
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Fri, Feb 14 - Wed, Mar 5
6:30 am - 8:35 amSTL-SAN
4h 05mnonstop
6:50 am - 12:20 pmSAN-STL
3h 30mnonstop
$423Southwest
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Mon, Dec 23 - Mon, Dec 30
5:20 pm - 7:25 pmSTL-SAN
4h 05mnonstop
7:00 am - 12:30 pmSAN-STL
3h 30mnonstop
$466Southwest
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Wed, Mar 12 - Sun, Mar 16
8:05 pm - 10:05 pmSTL-SAN
4h 00mnonstop
6:15 pm - 11:45 pmSAN-STL
3h 30mnonstop
$480Southwest
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Fri, Dec 13 - Sun, Dec 15
1:00 pm - 3:10 pmSTL-SAN
4h 10mnonstop
8:40 am - 2:10 pmSAN-STL
3h 30mnonstop
$486Southwest
Find Deal
Sat, Mar 8 - Sat, Mar 15
7:20 pm - 9:25 pmSTL-SAN
4h 05mnonstop
6:10 pm - 11:40 pmSAN-STL
3h 30mnonstop
$490Southwest
Find Deal
Mon, Mar 17 - Fri, Mar 21
11:00 am - 1:00 pmSTL-SAN
4h 00mnonstop
6:25 pm - 11:55 pmSAN-STL
3h 30mnonstop
$496Southwest
Find Deal
Tue, Dec 24 - Sat, Dec 28
6:30 am - 8:35 amSTL-SAN
4h 05mnonstop
6:45 pm - 12:15 amSAN-STL
3h 30mnonstop
$504Southwest
Find Deal
Fri, Dec 20 - Fri, Dec 27
7:00 pm - 9:00 pmSTL-SAN
4h 00mnonstop
6:25 pm - 11:55 pmSAN-STL
3h 30mnonstop
$578Southwest
Find Deal
Sat, Dec 21 - Sat, Dec 28
7:20 pm - 9:25 pmSTL-SAN
4h 05mnonstop
8:40 am - 2:10 pmSAN-STL
3h 30mnonstop
$588Southwest
Find Deal
Mon, Mar 17 - Sat, Mar 22

Frontier flights from St. Louis to San Diego

Our best Frontier deals on St. Louis to San Diego flight tickets
Frontier
Jan 2
STL12:00 pmLambert-St Louis
23h 16m
1 stop
SAN9:16 amSan Diego
Jan 7
SAN6:25 amSan Diego
24h 41m
1 stop
STL9:06 amLambert-St Louis
Frontier
Dec 6
STL6:46 pmLambert-St Louis
18h 12m
1 stop
SAN10:58 amSan Diego
Dec 10
SAN6:25 amSan Diego
23h 48m
1 stop
STL8:13 amLambert-St Louis
Frontier
Dec 19
STL10:09 pmLambert-St Louis
14h 13m
1 stop
SAN10:22 amSan Diego
Dec 26
SAN9:10 pmSan Diego
21h 19m
1 stop
STL8:29 pmLambert-St Louis

Alaska Airlines flights from St. Louis to San Diego

Our best Alaska Airlines deals on St. Louis to San Diego flight tickets
Alaska Airlines
Jan 26
STL2:49 pmLambert-St Louis
11h 10m
1 stop
SAN11:59 pmSan Diego
Feb 1
SAN6:52 pmSan Diego
17h 01m
1 stop
STL1:53 pmLambert-St Louis
Alaska Airlines
Jan 27
STL2:49 pmLambert-St Louis
23h 13m
2 stops
SAN12:02 pmSan Diego
Jan 31
SAN11:48 amSan Diego
10h 11m
1 stop
STL11:59 pmLambert-St Louis
Alaska Airlines
Jan 26
STL2:49 pmLambert-St Louis
11h 10m
1 stop
SAN11:59 pmSan Diego
Feb 1
SAN2:07 pmSan Diego
21h 46m
2 stops
STL1:53 pmLambert-St Louis

See travel insights to San Diego from

How to get the cheapest flight ticket from St. Louis to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of April, then departing from St. Louis during the month August is also very affordable. Most momondo users find prices during this month for around $302.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from St. Louis to San Diego is on a Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $303. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $380. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $222. Flights at noon are often more expensive with an average ticket price of $376.

What is the cheapest Lambert-St Louis to San Diego flight route?

Fly from Lambert-St Louis to San Diego for the best Lambert-St Louis - San Diego flight prices

How far in advance should I book a flight to San Diego?

Most flyers found that booking tickets 60 days in advance of their planned departure date is the best time to get cheap flights to San Diego. During this timeframe, flight prices are around $335. However, in the past 72 hours, people saw flights from St. Louis for as low as $114.

What cabin class options are available on Lambert-St Louis to San Diego flights?

There are 1 cabin classes available to choose from on Lambert-St Louis to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to San Diego flights?

You could potentially save up to 68% on your flight if you consider stops on a St. Louis to San Diego flight.

How have St. Louis to San Diego flight prices changed over time?

As of November 2024, prices for St. Louis to San Diego flights are approximately 29% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to San Diego (STL to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to San Diego

Best Price Found

$54

Fastest flight time

3h 55m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from St. Louis in the past 72 hours is $54. The best round-trip flight deal from St. Louis to San Diego found on momondo in the last 72 hours is $136.
The fastest flight from St. Louis to San Diego takes 3h 55m
Direct flights go from St. Louis to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)

  • How far is Lambert-St Louis to San Diego by plane?

    There are 1560.0 mi between Lambert-St Louis and San Diego. By plane, this route typically takes 4h 00m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to San Diego Airport?

    Prices for flights from Lambert-St Louis Airport to San Diego Airport are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to San Diego Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to San Diego Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to San Diego?

  • What is the most popular airline from St. Louis to San Diego?


Best airlines flying from St. Louis to San Diego

Compare and see reviews for airlines that fly from St. Louis to San Diego with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $108Free CancellationRating
6.1
3,536 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $144Free CancellationRating
6.3
8,169 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $196Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $235Free CancellationRating
8.0
8,755 reviews
Search Delta flights
United AirlinesPriceFrom $246Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
SouthwestPriceFrom $345Free CancellationRating
8.1
5,005 reviews
Search Southwest flights
  • Southwest Flights From St. Louis to San Diego

    The lowest priced Southwest flight from St. Louis to San Diego from the last 72 hours was $345. Generally, Southwest has 12 flights on this route every week with an average price of $487. Southwest is rated 8.1/10 by our users.


Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to San Diego?

Finding the right flight to San Diego from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Diego quick and easy, saving you time and money.

Can I find flights from St. Louis to San Diego with flexible booking policies on momondo?

Flights from St. Louis to San Diego with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to San Diego?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to San Diego.

I’m not ready to book a flight from St. Louis to San Diego right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Diego from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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