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San José

$125+ Cheap flights from St. Louis (STL) to San José (SJO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJO
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to San José Juan Santamaria Intl are usually found in September or November, booked 54 days in advance, depart on a Tuesday or Sunday and return on a Tuesday

Cheap flight deals from St. Louis to San José

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to San José (SJO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated julio 30, 2025.

Round-trip from

$284
(American Airlines)

One-way from

$125
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$582
From Lambert-St Louis to San José Juan Santamaria Intl
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One-way flight from Lambert-St Louis to San José Juan Santamaria Intl
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Highest demand for flights based on searches. 13% potential increase in price ($96 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from St. Louis to San José

Cheapest flights from St. Louis to San José
Explore the most affordable flight options available from St. Louis to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.

This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/72:17 pmSTL - SJO
1 stop7h 44mAmerican Airlines
jue. 11/137:00 amSJO - STL
1 stop15h 32mAmerican Airlines
Deal found 7/29$279
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/1410:35 amSTL - SJO
1 stop25h 39mSpirit Airlines
sáb. 9/2012:19 pmSJO - STL
1 stop20h 21mSpirit Airlines
Deal found 7/28$339
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/126:15 amSTL - SJO
1 stop7h 11mUnited Airlines
vie. 9/197:55 amSJO - STL
1 stop13h 13mUnited Airlines
Deal found 7/29$354
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/115:05 amSTL - SJO
1 stop8h 40mSouthwest
vie. 8/158:50 amSJO - STL
1 stop8h 25mSouthwest
Deal found 7/29$397
This Mytrip deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/1412:05 pmSTL - SJO
3 stops23h 22mMultiple Airlines
sáb. 9/208:14 amSJO - STL
3 stops25h 36mMultiple Airlines
Deal found 7/28$410

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated julio 30, 2025.
Use the filters below to find and compare flights from St. Louis to San José that are best for you.

Fly from

St. Louis

Fly to

San José

Route

Depart

Return

Price

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

vie. 11/7

2:17 pm-10:01 pm

1 stop7h 44m

San José Juan Santamaria Intl

jue. 11/13

7:00 am-10:32 pm

1 stop15h 32m

$279

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

dom. 9/14

10:35 am-11:14 am

1 stop25h 39m

San José Juan Santamaria Intl

sáb. 9/20

12:19 pm-9:40 am

1 stop20h 21m

$339

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

vie. 9/12

6:15 am-12:26 pm

1 stop7h 11m

San José Juan Santamaria Intl

vie. 9/19

7:55 am-10:08 pm

1 stop13h 13m

$354

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

lun. 8/11

5:05 am-12:45 pm

1 stop8h 40m

San José Juan Santamaria Intl

vie. 8/15

8:50 am-6:15 pm

1 stop8h 25m

$397

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

dom. 9/14

12:05 pm-10:27 am

3 stops23h 22m

San José Juan Santamaria Intl

sáb. 9/20

8:14 am-10:50 am

3 stops25h 36m

$410

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

lun. 8/11

6:26 am-12:55 pm

1 stop7h 29m

$125

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

sáb. 10/11

7:00 pm-11:14 am

1 stop17h 14m

$144

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

sáb. 10/11

7:00 pm-3:13 pm

2 stops21h 13m

$156

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

vie. 10/10

6:15 am-7:37 pm

1 stop14h 22m

$171

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from St. Louis to San José

Have a flexible travel schedule? Discover the best time to fly to San José from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to San José

How far ahead should I book a flight from St. Louis to San José, San José Province?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to San José. Price data was last updated on July 25, 2025.

The price you pay for your flight from St. Louis to San José, San José Province may vary depending on when you book. For the best chance of a lower fare, look to book 54 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from St. Louis to San José, San José Province?

Currently, September is the cheapest month in which you can book a flight from St. Louis to San José, San José Province (average of $398). Flying from St. Louis to San José, San José Province in March is currently the most expensive (average of $555). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to SJO?

Find hourly flight availability from St. Louis to San José. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 30, 2025.

When flying from St. Louis to San José, San José Province, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 30% versus a flight at noon.

How much does it cost to fly round-trip from St. Louis to San José, San José Province?

Reviews of airlines servicing San José

Get insights into the airlines that provide service to San José. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San José. Reviews last updated julio 30, 2025.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from St. Louis to San José to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,048 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to San José. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from St. Louis to San José, San José Province round-trip?

    Cheapflights users have booked flights from St. Louis to San José, San José Province round-trip from $284. Other airlines that can offer you cheap pricing are Spirit Airlines, from $328, and United Airlines, from $354. American Airlines is priced at 53% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to San José, San José Province one-way?

    The cheapest airlines for a one-way flight from St. Louis to San José, San José Province are American Airlines ($125), Spirit Airlines ($144), and United Airlines ($171).

  • Can I find deals for flights from St. Louis to San José that include hotel bookings?

    Yes. In addition to deals on St. Louis to San José flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to San José?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to San José.

  • Can I find deals for business class flights from St. Louis to San José?

    Yes. Cheapflights offers flight deals from St. Louis to San José by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to San José, San José Province?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to San José, San José Province (average of $398). Flying from St. Louis to San José, San José Province in March is currently the most expensive (average of $555). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Heredia
Manuel Antonio
Alajuela
Monteverde
Jacó

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Alternative routes for St. Louis to San José

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from St. Louis to San José

Discover the top 5 airlines that operate flights from St. Louis to San José. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$257Average$589FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$263Average$446FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$376Average$577FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$406Average$579FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$435Average$695FlexibilityNo cancel feeOn-time63%

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