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St. Louis

$328+ Cheap flights from Costa Rica to St. Louis (STL)

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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — STL
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$328
(United Airlines)

Popular in

April

Cheapest in

February

Average price

$580
Provider with most accurate pricing for San José Juan Santamaria Intl-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Lambert-St Louis flights.
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From Costa Rica to Lambert-St Louis
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Highest demand for flights based on searches. 15% potential increase in price ($87 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($24 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 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 March 31, 2025.

This United Airlines deal was found by Cheapflights users on 3/30. 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.
Wed 4/21:30 pmSJO - STL
2 stops25h 17mUnited Airlines
Mon 4/145:35 pmSTL - SJO
2 stops27h 02mUnited Airlines
Deal found 3/30$530
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Thu 5/296:03 amSJO - STL
2 stops14h 23mAmerican Airlines
Mon 6/26:00 amSTL - SJO
2 stops13h 35mAmerican Airlines
Deal found 3/30$569
This Mytrip deal was found by Cheapflights users on 3/30. 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.
Wed 4/212:26 pmSJO - STL
1 stop28h 26mMultiple Airlines
Mon 4/141:00 pmSTL - SJO
3 stops23h 18mMultiple Airlines
Deal found 3/30$598
This Alaska Airlines deal was found by Cheapflights users on 3/30. 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 5/201:06 amSJO - STL
2 stops21h 58mAlaska Airlines
Wed 5/286:22 pmSTL - SJO
2 stops30h 24mAlaska Airlines
Deal found 3/30$743

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 March 31, 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

Sat 7/5

11:59 pm-5:06 pm

1 stop16h 07m

Lambert-St Louis

Sun 7/13

4:28 pm-1:20 pm

1 stop21h 52m

$624

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 5/20

1:06 am-12:04 am

2 stops21h 58m

Lambert-St Louis

Wed 5/28

6:22 pm-11:46 pm

2 stops30h 24m

$743

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 9/20

4:20 pm-9:48 am

2 stops16h 28m

Lambert-St Louis

Sat 9/27

10:30 am-11:35 pm

3 stops38h 05m

$2,236

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 6/5

1:06 am-12:04 am

2 stops21h 58m

$561

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 8/6

5:05 am-10:45 pm

3 stops16h 40m

$914

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

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 March 31, 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 March 31, 2025.
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,614 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • 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
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
Chesterfield

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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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$335Average$475FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$342Average$424FlexibilityNo cancel feeOn-time71%
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