Cheap flights from St. Louis to San José from $104

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 José departing on 11/13. 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

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Spirit Airlines Logo
12:20 pm - 12:21 amSTL-SJO
12h 01m1 stop
Spirit Airlines Logo
1:16 am - 1:53 pmSJO-STL
12h 37m1 stop
$299Spirit Airlines
Find Deal
dom., feb. 1 - vie., feb. 6
Multiple Airlines Logo
2:57 pm - 12:25 pmSTL-SJO
21h 28m1 stop
Multiple Airlines Logo
1:31 pm - 11:07 amSJO-STL
45h 36m2 stops
$313Multiple Airlines
Find Deal
jue., dic. 4 - mar., dic. 9
Spirit Airlines Logo
2:57 pm - 12:25 pmSTL-SJO
21h 28m1 stop
Spirit Airlines Logo
1:31 pm - 2:02 pmSJO-STL
24h 31m1 stop
$316Spirit Airlines
Find Deal
jue., dic. 4 - mié., dic. 10
Multiple Airlines Logo
7:15 pm - 12:25 pmSTL-SJO
18h 10m1 stop
Multiple Airlines Logo
2:20 am - 9:07 amSJO-STL
30h 47m2 stops
$317Multiple Airlines
Find Deal
sáb., nov. 1 - lun., nov. 10
Multiple Airlines Logo
5:11 pm - 11:27 amSTL-SJO
18h 16m1 stop
Multiple Airlines Logo
1:19 pm - 11:01 amSJO-STL
21h 42m1 stop
$318Multiple Airlines
Find Deal
lun., feb. 2 - mié., feb. 25
Spirit Airlines Logo
12:20 pm - 12:21 amSTL-SJO
12h 01m1 stop
Spirit Airlines Logo
1:19 pm - 11:01 amSJO-STL
21h 42m1 stop
$319Spirit Airlines
Find Deal
jue., ene. 29 - mié., feb. 25
Delta Logo
7:05 am - 10:07 pmSTL-SJO
15h 02m1 stop
Delta Logo
7:00 am - 4:07 pmSJO-STL
9h 07m1 stop
$360Delta
Find Deal
mar., nov. 18 - mar., nov. 25
American Airlines Logo
10:15 am - 10:13 pmSTL-SJO
11h 58m2 stops
American Airlines Logo
1:23 pm - 11:07 pmSJO-STL
9h 44m1 stop
$364American Airlines
Find Deal
mié., nov. 12 - mié., nov. 19
American Airlines Logo
1:43 pm - 10:13 pmSTL-SJO
8h 30m1 stop
American Airlines Logo
2:59 pm - 10:59 pmSJO-STL
8h 00m1 stop
$365American Airlines
Find Deal
mié., nov. 12 - mié., nov. 19
Delta Logo
6:00 am - 11:58 amSTL-SJO
6h 58m1 stop
Delta Logo
2:31 pm - 11:44 pmSJO-STL
9h 13m1 stop
$379Delta
Find Deal
vie., oct. 31 - vie., nov. 14

American Airlines flights from St. Louis to San José

Our best American Airlines deals on St. Louis to San José flight tickets
American Airlines
Nov 12
STL10:15 amLambert-St Louis
11h 58m
2 stops
SJO10:13 pmSan José Juan Santamaria Intl
Nov 19
SJO1:23 pmSan José Juan Santamaria Intl
9h 44m
1 stop
STL11:07 pmLambert-St Louis
American Airlines
Nov 12
STL1:43 pmLambert-St Louis
8h 30m
1 stop
SJO10:13 pmSan José Juan Santamaria Intl
Nov 19
SJO2:59 pmSan José Juan Santamaria Intl
8h 00m
1 stop
STL10:59 pmLambert-St Louis
American Airlines
Jan 17
STL3:54 pmLambert-St Louis
20h 44m
1 stop
SJO12:38 pmSan José Juan Santamaria Intl
Jan 23
SJO1:34 pmSan José Juan Santamaria Intl
8h 31m
1 stop
STL10:05 pmLambert-St Louis

Delta flights from St. Louis to San José

Our best Delta deals on St. Louis to San José flight tickets
Delta
Nov 18
STL7:05 amLambert-St Louis
15h 02m
1 stop
SJO10:07 pmSan José Juan Santamaria Intl
Nov 25
SJO7:00 amSan José Juan Santamaria Intl
9h 07m
1 stop
STL4:07 pmLambert-St Louis
Delta
Oct 31
STL6:00 amLambert-St Louis
6h 58m
1 stop
SJO11:58 amSan José Juan Santamaria Intl
Nov 14
SJO2:31 pmSan José Juan Santamaria Intl
9h 13m
1 stop
STL11:44 pmLambert-St Louis
Delta
Nov 17
STL1:55 pmLambert-St Louis
8h 12m
1 stop
SJO10:07 pmSan José Juan Santamaria Intl
Nov 24
SJO7:00 amSan José Juan Santamaria Intl
9h 07m
1 stop
STL4:07 pmLambert-St Louis

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to San José 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 octubre 22, 2025.
Use the filters below to find and compare flights from St. Louis to San José that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

dom. 2/1

12:20 pm-12:21 am

1 stop12h 01m

San José Juan Santamaria Intl

vie. 2/6

1:16 am-1:53 pm

1 stop12h 37m

$299

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

jue. 12/4

2:57 pm-12:25 pm

1 stop21h 28m

San José Juan Santamaria Intl

mar. 12/9

1:31 pm-11:07 am

2 stops45h 36m

$313

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

jue. 12/4

2:57 pm-12:25 pm

1 stop21h 28m

San José Juan Santamaria Intl

mié. 12/10

1:31 pm-2:02 pm

1 stop24h 31m

$316

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

sáb. 11/1

7:15 pm-12:25 pm

1 stop18h 10m

San José Juan Santamaria Intl

lun. 11/10

2:20 am-9:07 am

2 stops30h 47m

$317

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

lun. 2/2

5:11 pm-11:27 am

1 stop18h 16m

San José Juan Santamaria Intl

mié. 2/25

1:19 pm-11:01 am

1 stop21h 42m

$318

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

jue. 1/29

12:20 pm-12:21 am

1 stop12h 01m

San José Juan Santamaria Intl

mié. 2/25

1:19 pm-11:01 am

1 stop21h 42m

$319

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

mar. 11/18

7:05 am-10:07 pm

1 stop15h 02m

San José Juan Santamaria Intl

mar. 11/25

7:00 am-4:07 pm

1 stop9h 07m

$360

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

mié. 11/12

10:15 am-10:13 pm

2 stops11h 58m

San José Juan Santamaria Intl

mié. 11/19

1:23 pm-11:07 pm

1 stop9h 44m

$364

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

mié. 11/12

1:43 pm-10:13 pm

1 stop8h 30m

San José Juan Santamaria Intl

mié. 11/19

2:59 pm-10:59 pm

1 stop8h 00m

$365

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

vie. 10/31

6:00 am-11:58 am

1 stop6h 58m

San José Juan Santamaria Intl

vie. 11/14

2:31 pm-11:44 pm

1 stop9h 13m

$379

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from St. Louis to San José

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 typical price of a round-trip flight between St. Louis and San José?

What is the cheapest month to fly to San José?

In general, October is the cheapest month to fly from St. Louis to San José. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $427. If you don’t want to visit San José in October, then you should wait until September to fly from St. Louis, when ticket prices are also cheap, with an average price of $435.

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

On average, the least expensive day to fly to San José from St. Louis is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $519. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from St. Louis to San José on a Saturday will generally be more expensive and average around $687. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our data shows that the cheapest St. Louis to San José flights are usually those with departure times in the evening. Our users have found flights to San José in the evening for as low as $427. Flights at noon are often more expensive with an average ticket price of $604.

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

You are more likely to see cheaper flights to San José from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to San José for around $584 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San José from St. Louis for as low as $472 on momondo.

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

As of October 2025, prices for St. Louis to San José flights are approximately 45% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to San José

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

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

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

Direct flights

None
There are no direct flights from St. Louis to San José. There are no popular flight routes from St. Louis to San José.
  • How far is Lambert-St Louis to San José Juan Santamaria Intl by plane?

    Lambert-St Louis and San José Juan Santamaria Intl are 2016.9 mi apart from one another. In terms of flight time, this usually takes a little over 6h 58m.

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

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

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

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

  • What documentation or ID do you need to fly to San José Juan Santamaria Intl Airport?

    The travel and health documents you'll need for your trip to San José Juan Santamaria Intl 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 José Juan Santamaria Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from St. Louis to San José

Compare and see reviews for airlines that fly from St. Louis to San José with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $257Free CancellationRating
7.9
7,981 reviews
Search Delta flights
Spirit AirlinesPriceFrom $263Free CancellationRating
6.3
8,097 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $338Free CancellationRating
7.2
11,029 reviews
Search American Airlines flights
SouthwestPriceFrom $383Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
United AirlinesPriceFrom $386Free CancellationRating
7.4
8,988 reviews
Search United Airlines flights

Traveling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Manuel Antonio
Jacó
Alajuela
Monteverde
Heredia
Dominical
Santa Elena
Esterillos Este

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to San José. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to San José from St. Louis with this policy.

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

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 José.

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

If you are simply researching potential flights to San José, momondo offers a useful price alert feature which will track prices for flights to San José from St. Louis and alert you when they change.

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1 adult
vie. 11/21
vie. 11/28

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