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Cheap flights from Santa Ana, California to St. Louis from $69

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Santa Ana, California to St. Louis departing on 1/23. 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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0 bags

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Find the cheapest flights from Santa Ana, California to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:34 pm - 12:12 pmSNA-STL
15h 38m1 stop
Frontier Logo
9:14 pm - 5:39 pmSTL-SNA
22h 25m1 stop
$134Frontier
Find Deal
Thu, Dec 4 - Sun, Dec 7
Frontier Logo
6:34 pm - 9:48 pmSNA-STL
25h 14m1 stop
Frontier Logo
9:14 pm - 5:39 pmSTL-SNA
22h 25m1 stop
$138Frontier
Find Deal
Thu, Dec 4 - Sun, Dec 7
Frontier Logo
1:35 pm - 10:14 amSNA-STL
18h 39m1 stop
Frontier Logo
9:14 pm - 5:39 pmSTL-SNA
22h 25m1 stop
$142Frontier
Find Deal
Fri, Dec 5 - Sun, Dec 7
Multiple Airlines Logo
3:55 pm - 2:48 pmSNA-STL
20h 53m1 stop
Multiple Airlines Logo
7:39 pm - 8:57 pmSTL-SNA
27h 18m2 stops
$164Multiple Airlines
Find Deal
Tue, Jan 13 - Fri, Jan 23
Multiple Airlines Logo
3:55 pm - 2:48 pmSNA-STL
20h 53m1 stop
Multiple Airlines Logo
9:48 pm - 8:57 pmSTL-SNA
25h 09m1 stop
$169Multiple Airlines
Find Deal
Tue, Jan 13 - Fri, Jan 23
Frontier Logo
1:35 pm - 10:14 amSNA-STL
18h 39m1 stop
Frontier Logo
10:44 pm - 5:39 pmSTL-SNA
20h 55m1 stop
$195Frontier
Find Deal
Fri, Dec 12 - Sun, Dec 14
Multiple Airlines Logo
1:35 pm - 10:14 amSNA-STL
18h 39m1 stop
Multiple Airlines Logo
10:10 pm - 10:16 amSTL-SNA
14h 06m1 stop
$208Multiple Airlines
Find Deal
Tue, Dec 16 - Tue, Dec 23
Frontier Logo
10:35 am - 10:02 amSNA-STL
21h 27m2 stops
Frontier Logo
1:07 pm - 6:50 pmSTL-SNA
7h 43m1 stop
$249Frontier
Find Deal
Sun, Jan 4 - Sun, Jan 11
Multiple Airlines Logo
6:45 am - 10:14 amSNA-STL
25h 29m2 stops
Multiple Airlines Logo
10:10 pm - 10:16 amSTL-SNA
14h 06m1 stop
$253Multiple Airlines
Find Deal
Tue, Dec 16 - Tue, Dec 23
Frontier Logo
2:39 pm - 8:53 pmSNA-STL
28h 14m1 stop
Frontier Logo
9:32 pm - 6:01 pmSTL-SNA
22h 29m1 stop
$272Frontier
Find Deal
Thu, Feb 5 - Sun, Feb 8

Frontier flights from Santa Ana, California to St. Louis

Our best Frontier deals on Santa Ana, California to St. Louis flight tickets
Frontier
Dec 4
SNA6:34 pmSanta Ana J. Wayne/Orange Cnty
15h 38m
1 stop
STL12:12 pmLambert-St Louis
Dec 7
STL9:14 pmLambert-St Louis
22h 25m
1 stop
SNA5:39 pmSanta Ana J. Wayne/Orange Cnty
$134
Find similar
Frontier
Dec 4
SNA6:34 pmSanta Ana J. Wayne/Orange Cnty
25h 14m
1 stop
STL9:48 pmLambert-St Louis
Dec 7
STL9:14 pmLambert-St Louis
22h 25m
1 stop
SNA5:39 pmSanta Ana J. Wayne/Orange Cnty
$138
Find similar
Frontier
Dec 5
SNA1:35 pmSanta Ana J. Wayne/Orange Cnty
18h 39m
1 stop
STL10:14 amLambert-St Louis
Dec 7
STL9:14 pmLambert-St Louis
22h 25m
1 stop
SNA5:39 pmSanta Ana J. Wayne/Orange Cnty
$142
Find similar

Southwest flights from Santa Ana, California to St. Louis

Our best Southwest deals on Santa Ana, California to St. Louis flight tickets
Southwest
Dec 16
SNA8:30 amSanta Ana J. Wayne/Orange Cnty
6h 55m
2 stops
STL5:25 pmLambert-St Louis
Dec 23
STL9:50 amLambert-St Louis
7h 45m
2 stops
SNA3:35 pmSanta Ana J. Wayne/Orange Cnty
$414
Find similar
Southwest
Jan 1
SNA8:30 amSanta Ana J. Wayne/Orange Cnty
6h 55m
2 stops
STL5:25 pmLambert-St Louis
Jan 15
STL2:25 pmLambert-St Louis
8h 10m
2 stops
SNA8:35 pmSanta Ana J. Wayne/Orange Cnty
$445
Find similar
Southwest
Mar 7
SNA3:50 pmSanta Ana J. Wayne/Orange Cnty
8h 05m
2 stops
STL1:55 amLambert-St Louis
Mar 12
STL8:20 amLambert-St Louis
8h 15m
2 stops
SNA2:35 pmSanta Ana J. Wayne/Orange Cnty
$499
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Santa Ana, California to St. Louis 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, momondo users made 832,500 searches. Data last updated November 18, 2025.
Use the filters below to find and compare flights from Santa Ana, California to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Thu 12/4

6:34 pm-12:12 pm

1 stop15h 38m

Lambert-St Louis

Sun 12/7

9:14 pm-5:39 pm

1 stop22h 25m

$134

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Thu 12/4

6:34 pm-9:48 pm

1 stop25h 14m

Lambert-St Louis

Sun 12/7

9:14 pm-5:39 pm

1 stop22h 25m

$138

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Fri 12/5

1:35 pm-10:14 am

1 stop18h 39m

Lambert-St Louis

Sun 12/7

9:14 pm-5:39 pm

1 stop22h 25m

$142

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Tue 1/13

3:55 pm-2:48 pm

1 stop20h 53m

Lambert-St Louis

Fri 1/23

7:39 pm-8:57 pm

2 stops27h 18m

$164

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Tue 1/13

3:55 pm-2:48 pm

1 stop20h 53m

Lambert-St Louis

Fri 1/23

9:48 pm-8:57 pm

1 stop25h 09m

$169

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Fri 12/12

1:35 pm-10:14 am

1 stop18h 39m

Lambert-St Louis

Sun 12/14

10:44 pm-5:39 pm

1 stop20h 55m

$195

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Tue 12/16

1:35 pm-10:14 am

1 stop18h 39m

Lambert-St Louis

Tue 12/23

10:10 pm-10:16 am

1 stop14h 06m

$208

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Sun 1/4

10:35 am-10:02 am

2 stops21h 27m

Lambert-St Louis

Sun 1/11

1:07 pm-6:50 pm

1 stop7h 43m

$249

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Tue 12/16

6:45 am-10:14 am

2 stops25h 29m

Lambert-St Louis

Tue 12/23

10:10 pm-10:16 am

1 stop14h 06m

$253

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Thu 2/5

2:39 pm-8:53 pm

1 stop28h 14m

Lambert-St Louis

Sun 2/8

9:32 pm-6:01 pm

1 stop22h 29m

$272

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Santa Ana, California to St. Louis

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 St. Louis?

In general, October is the cheapest month to fly from Santa Ana, California to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $329. The month of August is another great option to travel to St. Louis, with average flight prices from Santa Ana, California averaging around $374.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $391. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $431. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Santa Ana, California in the evening is the least expensive time of day to depart. momondo users have found prices as low as $375 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $426 per ticket.

How have Santa Ana, California to St. Louis flight prices changed over time?

As of November 2025, prices for Santa Ana, California to St. Louis flights are approximately 48% cheaper when compared to flights at the same time last year.

When to book flights from Santa Ana, California to St. Louis

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

Cheap Santa Ana, California to St. Louis (SNA to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Santa Ana, California to St. Louis

Direct flights

None
There are no direct flights from Santa Ana, California to St. Louis. There are no popular flight routes from Santa Ana, California to St. Louis.
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  • How far is Santa Ana J. Wayne/Orange Cnty to Lambert-St Louis by plane?

    The straight-line distance from Santa Ana J. Wayne/Orange Cnty to Lambert-St Louis is 1572.0 mi. By plane, this route typically takes 6h 00m.

  • When did momondo last update prices for flights from Santa Ana J. Wayne/Orange Cnty Airport to Lambert-St Louis Airport?

    Prices for flights from Santa Ana J. Wayne/Orange Cnty Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Santa Ana J. Wayne/Orange Cnty Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Santa Ana J. Wayne/Orange Cnty Airport to Lambert-St Louis 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 Santa Ana J. Wayne/Orange Cnty Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Santa Ana, California to St. Louis?

Best airlines flying from Santa Ana, California to St. Louis

Compare and see reviews for airlines that fly from Santa Ana, California to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $150Free CancellationRating
5.8
3,105 reviews
Search Frontier flights
DeltaPriceFrom $248Free CancellationRating
7.9
8,003 reviews
Search Delta flights
American AirlinesPriceFrom $278Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
SouthwestPriceFrom $311Free CancellationRating
8.0
4,248 reviews
Search Southwest flights
United AirlinesPriceFrom $311Free CancellationRating
7.4
9,019 reviews
Search United Airlines flights

  • United Airlines Flights From Santa Ana, California to St. Louis

    United Airlines flies from Santa Ana, California to St. Louis around 6 times per week, with 9,019 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Santa Ana, California to St. Louis in the last 72 hours was $311 (round-trip), much lower than the average airfare cost of $450 for United Airlines flights on this route.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Santa Ana to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Santa Ana to St. Louis for you.

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

All flight searches from Santa Ana to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Santa Ana to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Santa Ana. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Santa Ana to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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