San José

$169+ 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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJO
Apr 13 — Apr 201
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Cheap 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 14, 2026.

This American Airlines deal was found by Cheapflights users on 3/9. 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 4/295:24 am
STL
-
SJO
1 stop14h 43m
American Airlines
Wed 5/2011:35 pm
SJO
-
STL
1 stop17h 55m
American Airlines
Deal found 3/9$362
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Sat 5/96:11 pm
STL
-
SJO
1 stop20h 11m
American Airlines
Wed 5/2011:35 pm
SJO
-
STL
1 stop17h 55m
American Airlines
Deal found 3/9$370
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Sun 5/105:20 am
STL
-
SJO
1 stop17h 16m
American Airlines
Sat 5/1611:35 pm
SJO
-
STL
1 stop16h 46m
American Airlines
Deal found 3/9$392
This Delta deal was found by Cheapflights users on 3/10. 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.
Sat 5/96:00 am
STL
-
SJO
1 stop8h 15m
Delta
Wed 5/201:20 pm
SJO
-
STL
1 stop9h 39m
Delta
Deal found 3/10$402
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Mon 5/115:51 am
STL
-
SJO
2 stops14h 16m
American Airlines
Fri 5/1511:35 pm
SJO
-
STL
1 stop16h 46m
American Airlines
Deal found 3/9$407
This American Airlines deal was found by Cheapflights users on 3/9. 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 4/86:55 pm
STL
-
SJO
1 stop17h 30m
American Airlines
Wed 4/1511:35 pm
SJO
-
STL
1 stop8h 19m
American Airlines
Deal found 3/9$422

Find 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 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$362
(American Airlines)

One-way from

$169
(FlightHub)

Popular in

December

Cheapest in

January

Average price

$859
Provider with most accurate pricing for Lambert-St Louis-San José Juan Santamaria Intl flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-San José Juan Santamaria Intl flights.
From Lambert-St Louis to San José Juan Santamaria Intl
One-way flight from Lambert-St Louis to San José Juan Santamaria Intl
Highest demand for flights based on searches. 5% potential increase in price ($32 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($29 potential savings vs. average RT price).
Average for round-trip flights in March 2026

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 14, 2026.
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

Cheapest round-trip

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 4/20

7:45 am-8:19 pm

2 stops13h 34m

San José Juan Santamaria Intl

Thu 4/23

1:25 pm-8:25 am

2 stops18h 00m

$517

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 4/6

7:45 am-10:11 am

2 stops27h 26m

San José Juan Santamaria Intl

Tue 4/21

1:25 pm-8:25 am

2 stops18h 00m

$577
Quickest round-trip

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 5/11

8:30 pm-12:21 pm

2 stops16h 51m

San José Juan Santamaria Intl

Fri 5/15

7:55 am-10:30 pm

1 stop13h 35m

$577

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sun 5/10

7:09 pm-12:21 pm

2 stops18h 12m

San José Juan Santamaria Intl

Fri 5/15

1:25 pm-10:48 am

2 stops20h 23m

$577

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Wed 5/6

6:00 am-7:37 pm

1 stop14h 37m

San José Juan Santamaria Intl

Fri 5/15

1:25 pm-12:47 pm

2 stops22h 22m

$577
Cheapest one-way

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Thu 5/28

4:19 pm-8:19 am

1 stop17h 00m

$169
Quickest one-way

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sun 4/26

6:00 am-11:56 am

1 stop6h 56m

$170

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 4/28

6:00 am-11:56 am

1 stop6h 56m

$170

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 4/27

6:00 am-11:56 am

1 stop6h 56m

$170

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Wed 4/29

8:23 pm-11:33 am

3 stops40h 10m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 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 flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San José flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-San José 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 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?

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 6, 2026.

To ensure you get the cheapest price possible for a flight from St. Louis to San José, you should look to book at least 43 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, November is the cheapest month in which you can book a flight from St. Louis to San José (average of $314). Flying from St. Louis to San José in July is currently the most expensive (average of $427). 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.

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

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 14, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited 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.

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

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.
  • How long is the flight from St. Louis to San José?

    Departing from St. Louis to San José will take you 13h 34m. St. Louis and San José are separated by a distance of 2022 mi.

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

    Delta, at $257, was found to be the cheapest airline from St. Louis to San José.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Delta is priced at 53% 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?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to San José (average of $314). Flying from St. Louis to San José in July is currently the most expensive (average of $427). 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
Alajuela
Monteverde
Jacó
Heredia
Dominical
Manuel Antonio

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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.

Top 4 airlines flying from St. Louis to San José

Discover the top 4 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 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$257Average$528FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$331Average$498FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$379Average$515FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$383Average$601FlexibilityNo cancel feeOn-time63%

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