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Cheap flights from San José to St. Louis from $155

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San José to St. Louis departing on 12/24. 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 San José to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:55 am - 2:27 pm
SJO
-
STL
29h 32m2 stops
United Airlines Logo
6:00 am - 7:37 pm
STL
-
SJO
14h 37m1 stop
$348United Airlines
Fri, Apr 17 - Sun, Apr 26
United Airlines Logo
6:30 am - 3:52 pm
SJO
-
STL
9h 22m1 stop
United Airlines Logo
10:07 am - 6:16 pm
STL
-
SJO
8h 09m1 stop
$357United Airlines
Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
6:30 am - 12:29 pm
SJO
-
STL
29h 59m2 stops
United Airlines Logo
10:07 am - 8:39 pm
STL
-
SJO
10h 32m1 stop
$361United Airlines
Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
6:30 am - 9:13 pm
SJO
-
STL
14h 43m2 stops
United Airlines Logo
4:39 pm - 6:16 pm
STL
-
SJO
25h 37m1 stop
$369United Airlines
Wed, Feb 11 - Sat, Feb 14
United Airlines Logo
8:45 am - 10:43 pm
SJO
-
STL
13h 58m2 stops
United Airlines Logo
6:35 pm - 12:56 pm
STL
-
SJO
18h 21m1 stop
$377United Airlines
Wed, Dec 24 - Wed, Dec 31
American Airlines Logo
12:31 am - 5:05 pm
SJO
-
STL
16h 34m1 stop
American Airlines Logo
5:12 am - 9:43 pm
STL
-
SJO
17h 31m1 stop
$378American Airlines
Sun, Mar 1 - Wed, Mar 11
American Airlines Logo
12:34 am - 10:50 am
SJO
-
STL
10h 16m1 stop
American Airlines Logo
5:00 am - 11:26 am
STL
-
SJO
7h 26m1 stop
$386American Airlines
Wed, Dec 24 - Tue, Mar 24
United Airlines Logo
7:55 am - 12:25 pm
SJO
-
STL
27h 30m2 stops
United Airlines Logo
7:45 am - 12:21 pm
STL
-
SJO
29h 36m2 stops
$390United Airlines
Fri, Apr 17 - Sun, Apr 26
American Airlines Logo
12:34 am - 7:30 pm
SJO
-
STL
18h 56m2 stops
American Airlines Logo
10:20 am - 7:55 pm
STL
-
SJO
10h 35m2 stops
$391American Airlines
Wed, Dec 24 - Tue, Mar 24
United Airlines Logo
5:30 am - 10:06 pm
SJO
-
STL
15h 36m1 stop
United Airlines Logo
5:18 pm - 10:11 am
STL
-
SJO
17h 53m2 stops
$399United Airlines
Fri, May 22 - Sat, May 30

United Airlines flights from San José to St. Louis

Our best United Airlines deals on San José to St. Louis flight tickets
United Airlines
Apr 17
SJO7:55 amSan José Juan Santamaria Intl
29h 32m
2 stops
STL2:27 pmLambert-St Louis
Apr 26
STL6:00 amLambert-St Louis
14h 37m
1 stop
SJO7:37 pmSan José Juan Santamaria Intl
$348
Find similar
United Airlines
Jan 29
SJO6:30 amSan José Juan Santamaria Intl
9h 22m
1 stop
STL3:52 pmLambert-St Louis
Feb 2
STL10:07 amLambert-St Louis
8h 09m
1 stop
SJO6:16 pmSan José Juan Santamaria Intl
$357
Find similar
United Airlines
Jan 29
SJO6:30 amSan José Juan Santamaria Intl
29h 59m
2 stops
STL12:29 pmLambert-St Louis
Feb 2
STL10:07 amLambert-St Louis
10h 32m
1 stop
SJO8:39 pmSan José Juan Santamaria Intl
$361
Find similar

American Airlines flights from San José to St. Louis

Our best American Airlines deals on San José to St. Louis flight tickets
American Airlines
Mar 1
SJO12:31 amSan José Juan Santamaria Intl
16h 34m
1 stop
STL5:05 pmLambert-St Louis
Mar 11
STL5:12 amLambert-St Louis
17h 31m
1 stop
SJO9:43 pmSan José Juan Santamaria Intl
$378
Find similar
American Airlines
Dec 24
SJO12:34 amSan José Juan Santamaria Intl
10h 16m
1 stop
STL10:50 amLambert-St Louis
Mar 24
STL5:00 amLambert-St Louis
7h 26m
1 stop
SJO11:26 amSan José Juan Santamaria Intl
$386
Find similar
American Airlines
Dec 24
SJO12:34 amSan José Juan Santamaria Intl
18h 56m
2 stops
STL7:30 pmLambert-St Louis
Mar 24
STL10:20 amLambert-St Louis
10h 35m
2 stops
SJO7:55 pmSan José Juan Santamaria Intl
$391
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San José 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 December 11, 2025.
Use the filters below to find and compare flights from San José to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 4/17

7:55 am-2:27 pm

2 stops29h 32m

Lambert-St Louis

Sun 4/26

6:00 am-7:37 pm

1 stop14h 37m

$348

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 1/29

6:30 am-3:52 pm

1 stop9h 22m

Lambert-St Louis

Mon 2/2

10:07 am-6:16 pm

1 stop8h 09m

$357

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 1/29

6:30 am-12:29 pm

2 stops29h 59m

Lambert-St Louis

Mon 2/2

10:07 am-8:39 pm

1 stop10h 32m

$361

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 2/11

6:30 am-9:13 pm

2 stops14h 43m

Lambert-St Louis

Sat 2/14

4:39 pm-6:16 pm

1 stop25h 37m

$369

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 12/24

8:45 am-10:43 pm

2 stops13h 58m

Lambert-St Louis

Wed 12/31

6:35 pm-12:56 pm

1 stop18h 21m

$377

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sun 3/1

12:31 am-5:05 pm

1 stop16h 34m

Lambert-St Louis

Wed 3/11

5:12 am-9:43 pm

1 stop17h 31m

$378

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 12/24

12:34 am-10:50 am

1 stop10h 16m

Lambert-St Louis

Tue 3/24

5:00 am-11:26 am

1 stop7h 26m

$386

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 4/17

7:55 am-12:25 pm

2 stops27h 30m

Lambert-St Louis

Sun 4/26

7:45 am-12:21 pm

2 stops29h 36m

$390

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 12/24

12:34 am-7:30 pm

2 stops18h 56m

Lambert-St Louis

Tue 3/24

10:20 am-7:55 pm

2 stops10h 35m

$391

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/22

5:30 am-10:06 pm

1 stop15h 36m

Lambert-St Louis

Sat 5/30

5:18 pm-10:11 am

2 stops17h 53m

$399

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 San José 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 San José to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $362. The month of December is another great option to travel to St. Louis, with average flight prices from San José averaging around $365.

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 Tuesday when prices can be found for as low as $420. 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 $690. 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 San José in the morning is the least expensive time of day to depart. momondo users have found prices as low as $479 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $561 per ticket.

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

As of December 2025, prices for San José to St. Louis flights are approximately 37% cheaper when compared to flights at the same time last year.

When to book flights from San José to St. Louis

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

Cheap San José to St. Louis (SJO to STL) flight deals and tips

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

Fastest flight time

10h 05m

Direct flights

None
The fastest flight from San José to St. Louis takes 10h 05m
There are no direct flights from San José to St. Louis. There are no popular flight routes from San José to St. Louis.
Search flight deals

  • How far is San José Juan Santamaria Intl to Lambert-St Louis by plane?

    The straight-line distance from San José Juan Santamaria Intl to Lambert-St Louis is 2016.9 mi. Typically, this will take 10h 05m by plane in normal conditions.

  • When did momondo last update prices for flights from San José Juan Santamaria Intl Airport to Lambert-St Louis Airport?

    Prices for flights from San José Juan Santamaria Intl Airport to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from San José Juan Santamaria Intl Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from San José Juan Santamaria Intl Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San José Juan Santamaria Intl 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 San José to St. Louis?

Best airlines flying from San José to St. Louis

Compare and see reviews for airlines that fly from San José to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $274Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights

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
Maryland Heights
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Farmington
Festus
Clayton
Glencoe
Edwardsville
Eureka
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from San José 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 San José to St. Louis for you.

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

Yes. momondo allows you to filter the results for San José to St. Louis flights to just show those with flexible booking policies.

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

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 San José to St. Louis.

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

Price alerts on flights to St. Louis from San José are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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