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San José

$151+ 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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$286
(Delta)

One-way from

$151
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$592
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. 11% potential increase in price ($80 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/11. 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.
Mon 11/176:00 amSTL - SJO
1 stop6h 52mDelta
Tue 11/257:00 amSJO - STL
1 stop11h 02mDelta
Deal found 6/11$286
This American Airlines deal was found by Cheapflights users on 6/11. 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 10/295:29 amSTL - SJO
2 stops8h 31mAmerican Airlines
Tue 11/43:50 pmSJO - STL
1 stop16h 25mAmerican Airlines
Deal found 6/11$290
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Tue 7/295:26 pmSTL - SJO
1 stop18h 45mMultiple Airlines
Fri 8/17:30 amSJO - STL
1 stop25h 10mMultiple Airlines
Deal found 6/11$383
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Sat 6/146:15 amSTL - SJO
1 stop7h 11mUnited Airlines
Thu 7/177:55 amSJO - STL
1 stop13h 20mUnited Airlines
Deal found 6/12$398
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/77:13 pmSTL - SJO
2 stops17h 06mSpirit Airlines
Mon 7/1412:16 pmSJO - STL
1 stop27h 15mSpirit Airlines
Deal found 6/10$405
This Southwest deal was found by Cheapflights users on 6/11. 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 10/308:10 pmSTL - SJO
2 stops16h 00mSouthwest
Sun 11/22:10 pmSJO - STL
2 stops10h 10mSouthwest
Deal found 6/11$602
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 10/297:00 amSTL - SJO
2 stops17h 51mAlaska Airlines
Mon 11/31:58 amSJO - STL
2 stops37h 07mAlaska Airlines
Deal found 6/11$667
This Copa Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 11/158:25 amSTL - SJO
2 stops13h 25mCopa Airlines
Sun 11/234:13 amSJO - STL
2 stops13h 01mCopa Airlines
Deal found 6/11$917

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 June 12, 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

Mon 11/17

6:00 am-12:52 pm

1 stop6h 52m

San José Juan Santamaria Intl

Tue 11/25

7:00 am-6:02 pm

1 stop11h 02m

$286

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Wed 10/29

5:29 am-1:00 pm

2 stops8h 31m

San José Juan Santamaria Intl

Tue 11/4

3:50 pm-8:15 am

1 stop16h 25m

$290

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 7/29

5:26 pm-11:11 am

1 stop18h 45m

San José Juan Santamaria Intl

Fri 8/1

7:30 am-9:40 am

1 stop25h 10m

$383

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 7/7

7:13 pm-11:19 am

2 stops17h 06m

San José Juan Santamaria Intl

Mon 7/14

12:16 pm-4:31 pm

1 stop27h 15m

$405

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sat 7/5

5:00 am-11:55 am

1 stop7h 55m

San José Juan Santamaria Intl

Sun 7/13

12:44 pm-11:43 pm

1 stop9h 59m

$438

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sun 7/6

5:45 am-7:40 pm

1 stop14h 55m

San José Juan Santamaria Intl

Sun 7/13

1:15 pm-12:10 am

1 stop9h 55m

$472

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Wed 10/29

7:00 am-11:51 pm

2 stops17h 51m

San José Juan Santamaria Intl

Mon 11/3

1:58 am-3:05 pm

2 stops37h 07m

$667

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sat 11/15

8:25 am-9:50 pm

2 stops13h 25m

San José Juan Santamaria Intl

Sun 11/23

4:13 am-5:14 pm

2 stops13h 01m

$917

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sat 11/8

8:25 am-11:20 pm

2 stops14h 55m

San José Juan Santamaria Intl

Fri 11/14

2:15 am-5:14 pm

2 stops14h 59m

$1,096

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Wed 7/30

11:24 am-3:13 pm

1 stop28h 49m

$151

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 12 results
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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 June 9, 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 June 12, 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 June 12, 2025.
To help decide which airline to fly from St. Louis to San José, see what other customers have to say about Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Copa Airlines
7.5
Good
1,451 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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 American Airlines, from $290, and Spirit Airlines, from $405. Delta is priced at 52% 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
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.
Kansas City to San José flights
St. Louis to Liberia flights
Kansas City 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$247Average$394FlexibilityNo cancel feeOn-time65%
DeltaCheapest$257Average$590FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$384Average$584FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$407Average$585FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$443Average$718FlexibilityNo cancel feeOn-time63%

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