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Cheap flights from St. Louis to San Juan from $2,591

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to San Juan departing on 1/26. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:44 pm - 4:13 pm
STL
-
CPX
25h 29m2 stops
United Airlines Logo
10:30 am - 1:16 pm
CPX
-
STL
28h 46m2 stops
$2,591United Airlines
Mon, Jan 26 - Thu, Jan 29

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Culebra 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, momondo users made 832,500 searches. Data last updated December 8, 2025.
Use the filters below to find and compare flights from St. Louis to Culebra that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCulebra

STL - CPX

STLCPX

Lambert-St Louis

Mon 1/26

12:44 pm-4:13 pm

2 stops25h 29m

Culebra

Thu 1/29

10:30 am-1:16 pm

2 stops28h 46m

$2,591

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from St. Louis to Culebra

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 airlines fly to Culebra?

American Airlines, Delta and Frontier are the top three most popular airlines that fly to Culebra from St. Louis according to our data. American Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Culebra. Keep in mind that there are 6 different airlines that fly to Culebra on a routine basis, so you have a few additional options to choose from.

When to book flights from St. Louis to Culebra

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Culebra according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Culebra (STL to CPX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Culebra

Fastest flight time

25h 29m

Direct flights

None
The fastest flight from St. Louis to Culebra takes 25h 29m
There are no direct flights from St. Louis to Culebra. There are no popular flight routes from St. Louis to Culebra.
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  • How far is Lambert-St Louis to Culebra by plane?

    Culebra is 2049.2 mi away from Lambert-St Louis. By plane, this route typically takes 25h 29m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Culebra Airport?

    Prices for flights from Lambert-St Louis Airport to Culebra Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Lambert-St Louis Airport to Culebra Airport?

    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 Culebra Airport.

  • What documentation or ID do you need to fly to Culebra Airport?

    The travel and health documents required for your trip to Culebra Airport 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 Culebra Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Culebra?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Culebra from St. Louis.

Can I find flights from St. Louis to Culebra with flexible booking policies on momondo?

momondo does allow users to show only those flights to Culebra from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Culebra?

Once all potential St. Louis to Culebra flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Culebra right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Culebra flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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