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San José

$127+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJO
Jul 19 — Jul 261
Sat 7/19
Sat 7/26
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 July 14, 2025.

Round-trip from

$286
(American Airlines)

One-way from

$127
(Delta)

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. 14% potential increase in price ($102 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($39 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 July 14, 2025.

This American Airlines deal was found by Cheapflights users on 7/13. 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.
Wed 8/275:26 amSTL - SJO
1 stop15h 49mAmerican Airlines
Wed 9/37:27 amSJO - STL
1 stop9h 56mAmerican Airlines
Deal found 7/13$286
This Southwest deal was found by Cheapflights users on 7/13. 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.
Mon 8/2512:35 pmSTL - SJO
1 stop7h 20mSouthwest
Sat 8/308:45 amSJO - STL
1 stop11h 55mSouthwest
Deal found 7/13$330
This Delta deal was found by Cheapflights users on 7/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:30 amSTL - SJO
1 stop13h 45mDelta
Fri 12/57:00 amSJO - STL
1 stop16h 39mDelta
Deal found 7/14$333
This FlightHub deal was found by Cheapflights users on 7/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/910:45 amSTL - SJO
1 stop24h 44mSpirit Airlines
Sat 8/1612:18 pmSJO - STL
1 stop20h 22mSpirit Airlines
Deal found 7/13$361
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Fri 8/226:15 amSTL - SJO
1 stop7h 11mUnited Airlines
Sat 12/138:45 amSJO - STL
2 stops14h 00mUnited Airlines
Deal found 7/12$381
This Mytrip deal was found by Cheapflights users on 7/13. 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.
Thu 9/42:26 pmSTL - SJO
3 stops21h 48mMultiple Airlines
Tue 9/97:30 amSJO - STL
3 stops27h 40mMultiple Airlines
Deal found 7/13$455

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 July 14, 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

Wed 8/27

5:26 am-8:15 pm

1 stop15h 49m

San José Juan Santamaria Intl

Wed 9/3

7:27 am-6:23 pm

1 stop9h 56m

$286

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 8/25

12:35 pm-6:55 pm

1 stop7h 20m

San José Juan Santamaria Intl

Sat 8/30

8:45 am-9:40 pm

1 stop11h 55m

$330

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Thu 11/27

8:30 am-10:15 pm

1 stop13h 45m

San José Juan Santamaria Intl

Fri 12/5

7:00 am-11:39 pm

1 stop16h 39m

$333

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sat 8/9

10:45 am-10:29 am

1 stop24h 44m

San José Juan Santamaria Intl

Sat 8/16

12:18 pm-9:40 am

1 stop20h 22m

$361

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Fri 8/22

6:15 am-12:26 pm

1 stop7h 11m

San José Juan Santamaria Intl

Sat 12/13

8:45 am-10:45 pm

2 stops14h 00m

$381

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Thu 9/4

2:26 pm-11:14 am

3 stops21h 48m

San José Juan Santamaria Intl

Tue 9/9

7:30 am-12:10 pm

3 stops27h 40m

$455

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 8/19

6:00 am-12:10 pm

1 stop7h 10m

$127

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 8/19

7:01 am-8:15 pm

2 stops14h 14m

$129

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 8/25

2:30 pm-11:12 am

3 stops21h 42m

$166

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Wed 7/23

7:30 am-7:40 pm

1 stop13h 10m

$182

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/14

Showing 1-10 of 14 results
1
2

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 11, 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 July 14, 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.

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 July 14, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and Copa 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
4,242 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,956 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Copa Airlines
7.5
Good
1,482 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,858 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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 $286. Other airlines that can offer you cheap pricing are Southwest, from $330, and Delta, from $333. American Airlines is priced at 52% 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 Delta ($127), American Airlines ($129), and Spirit Airlines ($166).

  • 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

Browse thousands of different options on Cheapflights for your next trip

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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 July 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$257Average$590FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$263Average$406FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$380Average$580FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$401Average$580FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$435Average$695FlexibilityNo cancel feeOn-time63%

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