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

A quick flight from St. Louis to San José, San José Province can take about 6h 25m. Spirit Airlines provides one of the quickest options available for as low as $361. Airlines will cover a distance of 2022 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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 $257. Other airlines that can offer you cheap pricing are Spirit Airlines, from $263, and American Airlines, from $364. Delta is priced at 56% lower than the current average price of a flight leaving 3 months from now.

What is the cheapest day to fly from St. Louis to San José, San José Province?

Travelers seeking maximum savings on their St. Louis to San José, San José Province flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

What are the most popular airlines that fly from St. Louis to San José, San José Province?

When booking a flight from St. Louis to San José, San José Province, you may want to consider flying on American Airlines, Delta or Spirit Airlines as they are the most popular for this route.

What is the cheapest day to fly round-trip from St. Louis to San José, San José Province?

Flights from St. Louis to San José, San José Province are found to be more expensive on Friday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San José, San José Province.

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

Find a great deal and save up to 70% by booking at least 55 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to San José, San José Province within the next two weeks, with the cheapest ticket starting at $372.

What is the cheapest month to fly from St. Louis to San José, San José Province?

Flights from St. Louis to San José, San José Province lean towards being more expensive in December. Prices are generally better when you fly from St. Louis to San José, San José Province in September, with the cheapest ticket starting at $341.

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.

$104+ Cheap Flights from St. Louis to San José

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1. Tell us where you want to go

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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

Round-trip from	$296 (KAYAK)
One-way from	$104 (CheapOair)
Popular in	December
Cheapest in	September
Average price	$457

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 ($103 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 September 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 September 11, 2025.

Sun 10/510:57 amSTL - SJO

1 stop25h 33mSpirit Airlines

Fri 10/1012:35 pmSJO - STL

1 stop28h 35mSpirit Airlines

Deal found 9/8

$284

Thu 10/910:57 amSTL - SJO

1 stop25h 33mSpirit Airlines

Wed 10/1512:35 pmSJO - STL

1 stop20h 27mSpirit Airlines

Deal found 9/8

$285

Thu 10/910:57 amSTL - SJO

1 stop25h 33mSpirit Airlines

Sat 10/1112:35 pmSJO - STL

1 stop20h 27mSpirit Airlines

Deal found 9/8

$286

Sun 10/510:57 amSTL - SJO

1 stop25h 33mSpirit Airlines

Wed 10/1512:35 pmSJO - STL

1 stop20h 27mSpirit Airlines

Deal found 9/8

$290

Sun 10/510:57 amSTL - SJO

1 stop25h 33mSpirit Airlines

Sat 10/1112:35 pmSJO - STL

1 stop20h 27mSpirit Airlines

Deal found 9/8

$291

Thu 12/412:20 pmSTL - SJO

1 stop12h 01mSpirit Airlines

Wed 12/101:19 pmSJO - STL

1 stop21h 42mSpirit Airlines

Deal found 9/10

$296

Sun 11/210:57 amSTL - SJO

1 stop25h 33mSpirit Airlines

Sat 11/81:19 pmSJO - STL

1 stop21h 42mSpirit Airlines

Deal found 9/8

$311

Best flights from St. Louis to San José
Discover carefully curated flight deals from St. Louis to San José that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Thu 12/412:20 pmSTL - SJO

1 stop12h 01mSpirit Airlines

Wed 12/1012:22 pmSJO - STL

2 stops22h 39mSpirit Airlines

Deal found 9/10

$341

Tue 11/181:55 pmSTL - SJO

1 stop8h 12mDelta

Tue 11/257:00 amSJO - STL

1 stop11h 35mDelta

Deal found 9/11

$360

Mon 1/126:25 amSTL - SJO

1 stop6h 25mSouthwest

Thu 1/221:45 pmSJO - STL

1 stop7h 40mSouthwest

Deal found 9/8

$361

Sat 11/86:03 pmSTL - SJO

1 stop20h 07mAmerican Airlines

Sat 11/156:22 amSJO - STL

1 stop10h 18mAmerican Airlines

Deal found 9/10

$387

Wed 10/86:15 amSTL - SJO

1 stop14h 22mUnited Airlines

Tue 10/147:55 amSJO - STL

1 stop13h 05mUnited Airlines

Deal found 9/8

$470

Thu 12/49:53 amSTL - SJO

2 stops10h 56mAmerican Airlines

Wed 12/106:00 amSJO - STL

2 stops13h 29mAmerican Airlines

Deal found 9/10

$413

Tue 10/76:15 amSTL - SJO

1 stop7h 11mUnited Airlines

Thu 10/91:30 pmSJO - STL

1 stop7h 30mUnited Airlines

Deal found 9/8

$470

Sun 12/146:53 pmSTL - SJO

1 stop16h 59mAmerican Airlines

Mon 12/2212:34 amSJO - STL

1 stop8h 22mAmerican Airlines

Deal found 9/11

$449

Tue 3/36:15 amSTL - SJO

1 stop7h 02mUnited Airlines

Wed 3/42:20 pmSJO - STL

1 stop7h 46mUnited Airlines

Deal found 9/8

$470

Wed 10/86:15 amSTL - SJO

1 stop14h 22mUnited Airlines

Wed 10/157:55 amSJO - STL

1 stop10h 02mUnited Airlines

Deal found 9/8

$470

Tue 10/76:15 amSTL - SJO

1 stop14h 22mUnited Airlines

Tue 10/147:55 amSJO - STL

1 stop13h 05mUnited Airlines

Deal found 9/8

$470

Last-minute flights from St. Louis to San José
Discover last-minute flight deals from St. Louis to San José. Data last updated September 11, 2025 and is based on user searches.

Sun 9/2810:35 amSTL - SJO

1 stop25h 39mMultiple Airlines

Sun 10/512:35 pmSJO - STL

2 stops25h 29mMultiple Airlines

Deal found 9/10

$318

Sun 10/510:57 amSTL - SJO

1 stop25h 33mSpirit Airlines

Fri 10/1012:35 pmSJO - STL

1 stop28h 35mSpirit Airlines

Deal found 9/8

$284

Sun 10/510:57 amSTL - SJO

1 stop25h 33mSpirit Airlines

Wed 10/1512:35 pmSJO - STL

1 stop20h 27mSpirit Airlines

Deal found 9/8

$290

Sun 10/510:57 amSTL - SJO

1 stop25h 33mSpirit Airlines

Sat 10/1112:35 pmSJO - STL

1 stop20h 27mSpirit Airlines

Deal found 9/8

$291

Sun 10/510:57 amSTL - SJO

1 stop25h 33mMultiple Airlines

Thu 10/912:35 pmSJO - STL

2 stops21h 02mMultiple Airlines

Deal found 9/8

$316

Thu 10/910:57 amSTL - SJO

1 stop25h 33mSpirit Airlines

Wed 10/1512:35 pmSJO - STL

1 stop20h 27mSpirit Airlines

Deal found 9/8

$285

Thu 10/910:57 amSTL - SJO

1 stop25h 33mSpirit Airlines

Sat 10/1112:35 pmSJO - STL

1 stop20h 27mSpirit Airlines

Deal found 9/8

$286

One-way flights from St. Louis to San José
Search for one-way flight options from St. Louis to San José. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Sat 12/62:48 pmSTL - SJO

1 stop9h 33mSpirit Airlines

Deal found 9/10

$104

Mon 12/295:17 amSTL - SJO

1 stop17h 28mAmerican Airlines

Deal found 9/9

$164

Wed 10/17:55 pmSTL - SJO

3 stops40h 19mMultiple Airlines

Deal found 9/9

$188

Wed 9/178:17 amSTL - SJO

2 stops12h 25mAmerican Airlines

Deal found 9/9

$192

Tue 9/167:55 pmSTL - SJO

3 stops52h 40mMultiple Airlines

Deal found 9/9

$212

Wed 9/177:55 pmSTL - SJO

3 stops40h 19mMultiple Airlines

Deal found 9/9

$216

Sat 12/68:00 amSTL - SJO

2 stops23h 10mCopa Airlines

Deal found 9/10

$246

Wed 10/18:00 amSTL - SJO

2 stops26h 04mCopa Airlines

Deal found 9/9

$251

Tue 9/168:50 amSTL - SJO

2 stops11h 52mAmerican Airlines

Deal found 9/9

$263

Sun 12/287:05 amSTL - SJO

2 stops13h 12mAmerican Airlines

Deal found 9/9

$314

Mon 12/296:35 pmSTL - SJO

2 stops27h 57mUnited Airlines

Deal found 9/9

$332

Mon 12/299:50 amSTL - SJO

3 stops26h 24mMultiple Airlines

Deal found 9/9

$360

Cheapflights Fare Finder

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

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Thu 12/4

12:20 pm-12:21 am

1 stop12h 01m

San José Juan Santamaria Intl

Wed 12/10

12:22 pm-11:01 am

2 stops22h 39m

$341

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 11/18

1:55 pm-10:07 pm

1 stop8h 12m

San José Juan Santamaria Intl

Tue 11/25

7:00 am-6:35 pm

1 stop11h 35m

$360

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 1/12

6:25 am-12:50 pm

1 stop6h 25m

San José Juan Santamaria Intl

Thu 1/22

1:45 pm-9:25 pm

1 stop7h 40m

$361

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sat 11/8

6:03 pm-2:10 pm

1 stop20h 07m

San José Juan Santamaria Intl

Sat 11/15

6:22 am-4:40 pm

1 stop10h 18m

$387

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Thu 12/4

9:53 am-8:49 pm

2 stops10h 56m

San José Juan Santamaria Intl

Wed 12/10

6:00 am-7:29 pm

2 stops13h 29m

$413

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sun 12/14

6:53 pm-11:52 am

1 stop16h 59m

San José Juan Santamaria Intl

Mon 12/22

12:34 am-8:56 am

1 stop8h 22m

$449

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Wed 10/8

6:15 am-7:37 pm

1 stop14h 22m

San José Juan Santamaria Intl

Tue 10/14

7:55 am-10:00 pm

1 stop13h 05m

$470

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 10/7

6:15 am-12:26 pm

1 stop7h 11m

San José Juan Santamaria Intl

Thu 10/9

1:30 pm-10:00 pm

1 stop7h 30m

$470

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 3/3

6:15 am-1:17 pm

1 stop7h 02m

San José Juan Santamaria Intl

Wed 3/4

2:20 pm-10:06 pm

1 stop7h 46m

$470

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Wed 10/8

6:15 am-7:37 pm

1 stop14h 22m

San José Juan Santamaria Intl

Wed 10/15

7:55 am-6:57 pm

1 stop10h 02m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 22 results

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?

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?

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

Peruse reviews from past customers who have flown with Southwest, Delta, and United 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

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Southwest

8.0

Very good

4,248 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Delta

8.0

Very good

7,960 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

United Airlines

7.4

Good

8,937 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Spirit Airlines

6.3

Okay

8,023 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

How long is the flight from St. Louis to San José, San José Province?
A quick flight from St. Louis to San José, San José Province can take about 6h 25m. Spirit Airlines provides one of the quickest options available for as low as $361. Airlines will cover a distance of 2022 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
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 $257. Other airlines that can offer you cheap pricing are Spirit Airlines, from $263, and American Airlines, from $364. Delta is priced at 56% 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

Heredia

Manuel Antonio

Alajuela

Monteverde

Jacó

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Top 5 airlines flying from St. Louis to San José

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$257	Average$569	FlexibilityNo cancel fee	On-timeN/A
Spirit Airlines	Cheapest$263	Average$446	FlexibilityNo cancel fee	On-time65%
American Airlines	Cheapest$364	Average$584	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$386	Average$563	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$410	Average$677	FlexibilityNo cancel fee	On-time63%

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$104+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to San José with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

Round-trip from

One-way from

Popular in

Cheapest in

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Find flight deals from St. Louis to San José

Cheapest flights from St. Louis to San JoséExplore 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 September 11, 2025.

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 September 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to San José that are best for you.

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.

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?

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

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

Reviews of airlines servicing San José

Peruse reviews from past customers who have flown with Southwest, Delta, and United 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.

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, San José Province?

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

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

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

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

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

Traveling to a place near San José?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to San José

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from St. Louis to San José

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Travel Smart

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 September 11, 2025.