Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

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 1/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Deals available from 900+ travel sites.

"This year, momondo is the #1 place for airfares on the internet."
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? to track prices.

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.
7:09 pm - 11:52 pmSTL-SAN
6h 43m1 stop
10:40 am - 7:31 pmSAN-STL
6h 51m1 stop
$108Frontier
Find Deal
Sat, Feb 1 - Thu, Feb 6
7:09 pm - 11:52 pmSTL-SAN
6h 43m1 stop
6:25 am - 9:16 amSAN-STL
24h 51m1 stop
$118Frontier
Find Deal
Sat, Jan 18 - Tue, Jan 21
5:37 pm - 11:59 pmSTL-SAN
8h 22m1 stop
10:45 pm - 9:52 amSAN-STL
9h 07m1 stop
$277American Airlines
Find Deal
Thu, Feb 27 - Sun, Mar 2
1:45 pm - 7:53 pmSTL-SAN
8h 08m2 stops
7:00 am - 3:38 pmSAN-STL
6h 38m1 stop
$281United Airlines
Find Deal
Sun, Jan 19 - Sun, Jan 26
11:20 am - 4:20 pmSTL-SAN
7h 00m1 stop
6:15 am - 4:35 pmSAN-STL
8h 20m2 stops
$306United Airlines
Find Deal
Tue, May 6 - Sat, May 10
5:00 pm - 11:58 pmSTL-SAN
8h 58m1 stop
3:00 pm - 11:14 pmSAN-STL
6h 14m1 stop
$321Delta
Find Deal
Thu, Jan 9 - Wed, Jan 15
5:50 pm - 10:30 pmSTL-SAN
6h 40m1 stop
9:30 am - 2:55 pmSAN-STL
3h 25mnonstop
$353Southwest
Find Deal
Mon, Jan 20 - Mon, Jan 27
2:15 pm - 9:05 pmSTL-SAN
8h 50m1 stop
4:30 pm - 11:57 pmSAN-STL
5h 27m1 stop
$368American Airlines
Find Deal
Fri, Jan 17 - Mon, Jan 20
8:10 am - 12:15 pmSTL-SAN
6h 05m1 stop
6:35 pm - 12:05 amSAN-STL
3h 30mnonstop
$373Southwest
Find Deal
Thu, Jan 16 - Mon, Jan 20
6:00 am - 11:21 amSTL-SAN
7h 21m1 stop
5:10 pm - 12:38 amSAN-STL
5h 28m1 stop
$458Delta
Find Deal
Thu, Jun 12 - Wed, Jun 25
7:09 pm - 11:52 pmSTL-SAN
6h 43m1 stop
$54Frontier
Find Deal
Wed, Jan 22
8:31 pm - 6:58 pmSTL-SAN
24h 27m1 stop
$61Frontier
Find Deal
Thu, Jan 16
5:00 pm - 11:58 pmSTL-SAN
8h 58m1 stop
$138Delta
Find Deal
Wed, Jan 15
2:25 pm - 7:35 pmSTL-SAN
7h 10m2 stops
$143Southwest
Find Deal
Sat, Feb 22
2:49 pm - 7:36 amSTL-SAN
18h 47m2 stops
$147Alaska Airlines
Find Deal
Wed, Jan 22
2:18 pm - 6:49 pmSTL-SAN
6h 31m1 stop
$169Delta
Find Deal
Thu, Mar 20
6:30 am - 4:59 pmSTL-SAN
12h 29m2 stops
$171Alaska Airlines
Find Deal
Tue, Apr 22
4:29 pm - 9:42 pmSTL-SAN
7h 13m1 stop
$183United Airlines
Find Deal
Sat, Mar 22
9:44 am - 7:53 pmSTL-SAN
12h 09m2 stops
$188United Airlines
Find Deal
Tue, Jan 21
12:15 pm - 2:10 pmSTL-SAN
3h 55mnonstop
$205Southwest
Find Deal
Tue, May 6
6:49 pm - 11:54 pmSTL-SAN
7h 05m1 stop
6:25 am - 8:13 amSAN-STL
23h 48m1 stop
$485Frontier
Find Deal
Wed, Dec 25 - Tue, Dec 31
6:49 pm - 11:54 pmSTL-SAN
7h 05m1 stop
11:12 am - 8:13 amSAN-STL
19h 01m1 stop
$641Frontier
Find Deal
Wed, Dec 25 - Fri, Jan 3
6:49 pm - 11:54 pmSTL-SAN
7h 05m1 stop
7:55 pm - 1:27 pmSAN-STL
15h 32m2 stops
Wed, Dec 25 - Tue, Dec 31
8:50 am - 8:03 pmSTL-SAN
13h 13m2 stops
10:06 am - 12:28 amSAN-STL
12h 22m2 stops
$858United Airlines
Find Deal
Wed, Dec 25 - Tue, Dec 31
8:50 am - 6:11 pmSTL-SAN
11h 21m1 stop
7:13 pm - 12:28 amSAN-STL
27h 15m1 stop
$865United Airlines
Find Deal
Tue, Dec 24 - Fri, Dec 27
4:43 pm - 10:04 amSTL-SAN
19h 21m2 stops
11:10 am - 12:28 amSAN-STL
11h 18m1 stop
$870United Airlines
Find Deal
Tue, Dec 24 - Fri, Dec 27
8:50 am - 8:03 pmSTL-SAN
13h 13m2 stops
6:15 am - 10:16 pmSAN-STL
14h 01m2 stops
$909United Airlines
Find Deal
Tue, Dec 24 - Fri, Dec 27
8:35 am - 8:40 pmSTL-SAN
14h 05m2 stops
6:15 am - 12:28 amSAN-STL
16h 13m1 stop
$912United Airlines
Find Deal
Wed, Dec 25 - Fri, Jan 3
7:00 am - 8:16 pmSTL-SAN
15h 16m2 stops
12:00 pm - 11:59 pmSAN-STL
9h 59m2 stops
$999Alaska Airlines
Find Deal
Wed, Dec 25 - Fri, Jan 3
7:40 am - 9:55 amSTL-SAN
4h 15mnonstop
6:15 pm - 11:45 pmSAN-STL
3h 30mnonstop
$428Southwest
Find Deal
Thu, Feb 13 - Mon, Feb 17
10:20 am - 12:30 pmSTL-SAN
4h 10mnonstop
9:30 am - 2:55 pmSAN-STL
3h 25mnonstop
$454Southwest
Find Deal
Mon, Jan 20 - Mon, Jan 27
11:05 am - 1:15 pmSTL-SAN
4h 10mnonstop
6:50 am - 12:15 pmSAN-STL
3h 25mnonstop
$476Southwest
Find Deal
Thu, Jan 9 - Sun, Jan 12
11:05 am - 1:15 pmSTL-SAN
4h 10mnonstop
6:50 am - 12:15 pmSAN-STL
3h 25mnonstop
$485Southwest
Find Deal
Thu, Jan 30 - Sun, Feb 2
11:05 am - 1:15 pmSTL-SAN
4h 10mnonstop
6:35 pm - 12:05 amSAN-STL
3h 30mnonstop
$496Southwest
Find Deal
Sun, Jan 19 - Sun, Jan 26
4:35 pm - 6:45 pmSTL-SAN
4h 10mnonstop
6:35 pm - 12:05 amSAN-STL
3h 30mnonstop
$499Southwest
Find Deal
Thu, Jan 16 - Mon, Jan 20
7:20 pm - 9:25 pmSTL-SAN
4h 05mnonstop
6:45 am - 12:15 pmSAN-STL
3h 30mnonstop
$612Southwest
Find Deal
Thu, Mar 27 - Sun, Mar 30

Delta flights from St. Louis to San Diego

Our best Delta deals on St. Louis to San Diego flight tickets
Delta
Jan 9
STL5:00 pmLambert-St Louis
8h 58m
1 stop
SAN11:58 pmSan Diego
Jan 15
SAN3:00 pmSan Diego
6h 14m
1 stop
STL11:14 pmLambert-St Louis
Delta
Jun 12
STL6:00 amLambert-St Louis
7h 21m
1 stop
SAN11:21 amSan Diego
Jun 25
SAN5:10 pmSan Diego
5h 28m
1 stop
STL12:38 amLambert-St Louis
Delta
Jun 6
STL6:30 amLambert-St Louis
6h 17m
1 stop
SAN10:47 amSan Diego
Jun 22
SAN6:15 amSan Diego
16h 23m
1 stop
STL12:38 amLambert-St Louis

Frontier flights from St. Louis to San Diego

Our best Frontier deals on St. Louis to San Diego flight tickets
Frontier
Feb 1
STL7:09 pmLambert-St Louis
6h 43m
1 stop
SAN11:52 pmSan Diego
Feb 6
SAN10:40 amSan Diego
6h 51m
1 stop
STL7:31 pmLambert-St Louis
Frontier
Jan 18
STL7:09 pmLambert-St Louis
6h 43m
1 stop
SAN11:52 pmSan Diego
Jan 21
SAN6:25 amSan Diego
24h 51m
1 stop
STL9:16 amLambert-St Louis
Frontier
Jan 18
STL7:09 pmLambert-St Louis
6h 43m
1 stop
SAN11:52 pmSan Diego
Jan 19
SAN10:40 amSan Diego
6h 51m
1 stop
STL7:31 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 January is also very affordable. Most momondo users find prices during this month for around $276.

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 $300. 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 $230. Flights at noon are often more expensive with an average ticket price of $366.

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 $327. However, in the past 72 hours, people saw flights from St. Louis for as low as $121.

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 73% 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 December 2024, prices for St. Louis to San Diego flights are approximately 23% 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 $108.
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 05m.

  • 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 $115Free CancellationRating
6.1
3,469 reviews
Search Frontier flights
American AirlinesPriceFrom $198Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $235Free CancellationRating
8.0
8,594 reviews
Search Delta flights
United AirlinesPriceFrom $246Free CancellationRating
7.4
9,022 reviews
Search United Airlines flights
SouthwestPriceFrom $345Free CancellationRating
8.1
4,780 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 18 flights on this route every week with an average price of $489. 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.


An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Sat 12/28
Sat 1/4
Email me momondo's favorite deals

Find better results for your trip to the United States