Cheap flights from St. Louis to Costa Rica from $132
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Costa Rica departing on 7/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from St. Louis to Costa Rica
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Costa Rica?
The cheapest month to fly to Costa Rica from St. Louis is in September. Flight prices, which tend to average around $475, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in September, then November is your next best option. Flight prices from St. Louis to Costa Rica during November average around $502.
What is the cheapest day to depart on your flight to Costa Rica?
According to our data, Tuesday is the cheapest day to fly to Costa Rica from St. Louis. The lowest ticket price found for a Tuesday departure recently was $519. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $687. These prices are subject to change though, so be sure to set up a Price Alert for flights to Costa Rica.
What is the cheapest time of day to depart on your flight to Costa Rica?
In the evening is the cheapest time of day to fly from St. Louis to Costa Rica when you can find flight prices for as low as $427. Flying to Costa Rica in the evening is an ideal time because this is during off-peak travel hours. Flights to Costa Rica are more costly at noon, with an average ticket price of $604. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to Costa Rica?
You are more likely to see cheaper flights to Costa Rica from St. Louis when booking 8 weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $606 when searching 8 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Costa Rica from St. Louis for as low as $527 on momondo.
What is the cheapest airline that flies from Lambert-St Louis to Costa Rica?
American Airlines, United Airlines, and Spirit Airlines are the most popular carriers operating from Lambert-St Louis to Costa Rica
What airlines fly to Costa Rica?
American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Costa Rica from St. Louis according to our data. American Airlines is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Costa Rica. Keep in mind that there are 5 different airlines that fly to Costa Rica on a routine basis, so you have a few additional options to choose from.
Cheap St. Louis to Costa Rica flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Costa Rica
When did momondo last update prices for flights from Lambert-St Louis Airport to Costa Rica?
Prices for flights from Lambert-St Louis Airport to Costa Rica are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Costa Rica?
As of June 2025, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Costa Rica.
How old do you have to be to fly from Lambert-St Louis Airport to Costa Rica?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Costa Rica.
What documentation or ID do you need to fly to Costa Rica?
The travel and health documents required for your trip to Costa Rica can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Costa Rica. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from St. Louis to Costa Rica
Compare and see reviews for airlines that fly from St. Louis to Costa Rica with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $247 | Free Cancellation | Rating 6.3 8,052 reviews | |||
| PriceFrom $257 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $384 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $406 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $443 | Free Cancellation | Rating 8.0 4,287 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from St. Louis to Costa Rica?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Costa Rica for you.
Can I find flights from St. Louis to Costa Rica with flexible booking policies on momondo?
Flights from St. Louis to Costa Rica with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from St. Louis to Costa Rica?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Costa Rica.
I’m not ready to book a flight from St. Louis to Costa Rica right now. Can momondo alert me if prices change?
Yes. momondo can track prices for St. Louis to Costa Rica flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.