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$291+ Cheap flights from St. Louis (STL) to San José (SJO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJO
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 May, booked 90 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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$291
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$588
Provider with most accurate pricing for Lambert-St Louis-San José Juan Santamaria Intl flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-San José Juan Santamaria Intl flights.
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From Lambert-St Louis to San José Juan Santamaria Intl
Search Deals
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 ($34 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 28, 2025.

This Mytrip deal was found by Cheapflights users on 3/26. 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.
Sat 5/1010:10 amSTL - SJO
1 stop26h 23mSpirit Airlines
Wed 5/1412:28 pmSJO - STL
1 stop19h 47mSpirit Airlines
Deal found 3/26$291
This Kiwi.com deal was found by Cheapflights users on 3/26. 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.
Tue 5/65:47 pmSTL - SJO
1 stop17h 40mMultiple Airlines
Thu 5/1511:32 amSJO - STL
1 stop11h 34mMultiple Airlines
Deal found 3/26$301
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 6/107:20 amSTL - SJO
1 stop15h 44mAmerican Airlines
Wed 6/1811:59 pmSJO - STL
1 stop15h 40mAmerican Airlines
Deal found 3/27$342
This Delta deal was found by Cheapflights users on 3/26. 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.
Tue 10/216:00 amSTL - SJO
1 stop6h 48mDelta
Tue 10/281:13 pmSJO - STL
1 stop9h 26mDelta
Deal found 3/26$362
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Sun 10/266:15 amSTL - SJO
1 stop7h 02mUnited Airlines
Thu 10/301:20 pmSJO - STL
1 stop7h 46mUnited Airlines
Deal found 3/26$422
This Copa Airlines deal was found by Cheapflights users on 3/25. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/268:10 amSTL - SJO
2 stops25h 10mCopa Airlines
Tue 6/34:10 amSJO - STL
2 stops17h 05mCopa Airlines
Deal found 3/25$570
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/66:30 amSTL - SJO
2 stops18h 22mAlaska Airlines
Wed 5/141:06 amSJO - STL
2 stops21h 58mAlaska Airlines
Deal found 3/26$610
This Southwest deal was found by Cheapflights users on 3/27. 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.
Thu 6/127:05 amSTL - SJO
2 stops13h 35mSouthwest
Thu 6/198:45 amSJO - STL
2 stops11h 00mSouthwest
Deal found 3/27$650

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 March 28, 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

Sat 5/10

10:10 am-11:33 am

1 stop26h 23m

San José Juan Santamaria Intl

Wed 5/14

12:28 pm-9:15 am

1 stop19h 47m

$291

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 5/6

5:47 pm-10:27 am

1 stop17h 40m

San José Juan Santamaria Intl

Thu 5/15

11:32 am-12:06 am

1 stop11h 34m

$301

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 6/10

7:20 am-10:04 pm

1 stop15h 44m

San José Juan Santamaria Intl

Wed 6/18

11:59 pm-4:39 pm

1 stop15h 40m

$342

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 6/10

6:00 am-12:00 pm

1 stop7h 00m

San José Juan Santamaria Intl

Tue 6/17

1:25 pm-11:42 pm

1 stop9h 17m

$382

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sun 6/15

5:55 pm-10:11 am

1 stop17h 16m

San José Juan Santamaria Intl

Fri 6/20

5:30 am-4:53 pm

1 stop10h 23m

$432

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 5/26

8:10 am-8:20 am

2 stops25h 10m

San José Juan Santamaria Intl

Tue 6/3

4:10 am-10:15 pm

2 stops17h 05m

$570

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 5/6

6:30 am-11:52 pm

2 stops18h 22m

San José Juan Santamaria Intl

Wed 5/14

1:06 am-12:04 am

2 stops21h 58m

$610

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Thu 6/12

7:05 am-7:40 pm

2 stops13h 35m

San José Juan Santamaria Intl

Thu 6/19

8:45 am-8:45 pm

2 stops11h 00m

$650

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Compare providers for flights from St. Louis to San José

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to San José in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-San José, San José Province flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-San José, San José Province flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San José, San José Province flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-San José, San José Province flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-San José, San José Province flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 March 21, 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 90 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 March 28, 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.

Rainfall in San José by month

Plan your trip to San José by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San José, San José Province ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit San José, San José Province when rainfall is around 0.0 in.

Temperature in San José by month

Plan your trip to San José by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San José, San José Province, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).

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 March 28, 2025.
To help decide which airline to fly from St. Louis to San José, see what other customers have to say about Southwest, Alaska Airlines and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Copa Airlines
7.5
Good
1,395 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $291. Other airlines that can offer you cheap pricing are American Airlines, from $342, and Delta, from $382. Spirit Airlines is priced at 51% lower than the current average price of a flight leaving 3 months from now.

  • 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Manuel Antonio
Heredia
Jacó
Alajuela
Monteverde

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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.
Kansas City to San José flights
Kansas City to Liberia flights
St. Louis to Liberia flights
Springfield to San José flights
Columbia to Liberia flights

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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$246Average$316FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$389Average$577FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$391Average$600FlexibilityNo cancel feeOn-time71%
DeltaCheapest$427Average$595FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$443Average$783FlexibilityNo cancel feeOn-time63%
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