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St. Louis

$158+ Cheap flights from Costa Rica to St. Louis (STL)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — STL
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
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Cheap flight deals from Costa Rica to St. Louis

Keep the following information in mind while searching for Costa Rica to St. Louis flight deals. Data was last updated June 18, 2025.

Round-trip from

$278
(American Airlines)

One-way from

$158
(United Airlines)

Popular in

April

Cheapest in

February

Average price

$484
From Costa Rica to Lambert-St Louis
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One-way flight from Costa Rica to Lambert-St Louis
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Highest demand for flights based on searches. 13% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 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 Costa Rica to St. Louis

Cheapest flights from Costa Rica to St. Louis
Explore the most affordable flight options available from Costa Rica to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

This American Airlines deal was found by Cheapflights users on 6/18. 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 9/37:21 amSJO - STL
1 stop14h 29mAmerican Airlines
Tue 10/145:28 amSTL - SJO
1 stop8h 49mAmerican Airlines
Deal found 6/18$278
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Thu 9/41:30 pmSJO - STL
2 stops23h 49mUnited Airlines
Sun 10/1212:25 pmSTL - SJO
2 stops25h 01mUnited Airlines
Deal found 6/17$311
This Delta deal was found by Cheapflights users on 6/17. 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 9/41:35 pmSJO - STL
1 stop7h 27mDelta
Tue 10/146:00 amSTL - SJO
1 stop6h 48mDelta
Deal found 6/17$331
This Southwest deal was found by Cheapflights users on 6/16. 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 7/78:45 amSJO - STL
1 stop13h 40mSouthwest
Mon 7/2812:50 pmSTL - SJO
1 stop7h 50mSouthwest
Deal found 6/16$356
This FlightHub deal was found by Cheapflights users on 6/16. 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.
Fri 7/1811:24 amSJO - STL
1 stop21h 16mSpirit Airlines
Thu 7/315:26 pmSTL - SJO
1 stop18h 45mSpirit Airlines
Deal found 6/16$417
This Mytrip deal was found by Cheapflights users on 6/16. 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 7/317:30 amSJO - STL
3 stops25h 22mMultiple Airlines
Thu 8/75:26 pmSTL - SJO
2 stops22h 47mMultiple Airlines
Deal found 6/16$523
This Alaska Airlines deal was found by Cheapflights users on 6/17. 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 11/51:58 amSJO - STL
2 stops22h 00mAlaska Airlines
Wed 11/127:00 amSTL - SJO
2 stops17h 38mAlaska Airlines
Deal found 6/17$691
This Air Canada deal was found by Cheapflights users on 6/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/48:55 amSJO - STL
1 stop30h 31mAir Canada
Sun 11/94:15 pmSTL - SJO
1 stop30h 10mAir Canada
Deal found 6/16$824

Cheapflights Fare Finder

Customize your flight search to find flights from Costa Rica to St. Louis 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 18, 2025.
Use the filters below to find and compare flights from Costa Rica to St. Louis that are best for you.

Fly from

Costa Rica

Fly to

St. Louis

Route

Depart

Return

Price

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 9/3

7:21 am-10:50 pm

1 stop14h 29m

Lambert-St Louis

Tue 10/14

5:28 am-1:17 pm

1 stop8h 49m

$278

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 9/4

1:30 pm-2:19 pm

2 stops23h 49m

Lambert-St Louis

Sun 10/12

12:25 pm-12:26 pm

2 stops25h 01m

$311

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 9/4

1:35 pm-10:02 pm

1 stop7h 27m

Lambert-St Louis

Tue 10/14

6:00 am-11:48 am

1 stop6h 48m

$331

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Mon 7/7

8:45 am-11:25 pm

1 stop13h 40m

Lambert-St Louis

Mon 7/28

12:50 pm-7:40 pm

1 stop7h 50m

$356

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 7/18

11:24 am-9:40 am

1 stop21h 16m

Lambert-St Louis

Thu 7/31

5:26 pm-11:11 am

1 stop18h 45m

$417

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 7/31

7:30 am-9:52 am

3 stops25h 22m

Lambert-St Louis

Thu 8/7

5:26 pm-3:13 pm

2 stops22h 47m

$523

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 11/5

1:58 am-11:58 pm

2 stops22h 00m

Lambert-St Louis

Wed 11/12

7:00 am-12:38 am

2 stops17h 38m

$691

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 11/4

8:55 am-3:26 pm

1 stop30h 31m

Lambert-St Louis

Sun 11/9

4:15 pm-10:25 pm

1 stop30h 10m

$824

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 9/4

1:30 pm-6:50 pm

1 stop28h 20m

$158

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 9/3

7:21 am-10:50 pm

1 stop14h 29m

$184

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

Showing 1-10 of 13 results
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Best time to book a flight from Costa Rica to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Costa Rica 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 Costa Rica to St. Louis

What is the cheapest month to book a flight from Costa Rica to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Costa Rica to St. Louis (average of $311). Flying from Costa Rica to St. Louis in March is currently the most expensive (average of $356). 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 CR to STL?

Find hourly flight availability from Costa Rica to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 18, 2025.

When flying from Costa Rica to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated June 18, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,810 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Costa Rica to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Costa Rica?

    If you book a flight to St. Louis from Costa Rica, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • What are the cheapest airlines to fly from Costa Rica to St. Louis one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $158. However, be on the lookout for offers from American Airlines and Spirit Airlines, as they are both options that can get you from Costa Rica to St. Louis for a low price.

  • Can I find deals for flights from Costa Rica to St. Louis that include hotel bookings?

    Yes. In addition to deals on Costa Rica to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Costa Rica to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Costa Rica to St. Louis.

  • Can I find deals for business class flights from Costa Rica to St. Louis?

    Yes. Cheapflights offers flight deals from Costa Rica to St. Louis 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 Costa Rica to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Costa Rica to St. Louis (average of $311). Flying from Costa Rica to St. Louis in March is currently the most expensive (average of $356). 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 Costa Rica?

Book flights to Costa Rica if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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Top 2 airlines flying from Costa Rica to St. Louis

Discover the top 2 airlines that operate flights from Costa Rica to St. Louis. 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 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$334Average$430FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$337Average$438FlexibilityNo cancel feeOn-time69%

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