US$80️ Cheap Flights from St. Louis to San Juan (2024)

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Find cheap one-way flights from St. Louis to San Juan starting at US$80.

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from St. Louis to San Juan?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Cheapest airlines flights from St. Louis to San Juan

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Spirit Airlines

From US$80

Frontier Airlines

From US$94

American Airlines

From US$122

Delta Air Lines

From US$131

United Airlines

From US$175

Sun Country Airlines

From US$238

Alaska Airlines

From US$446

ANA airlines

Find more flights and airlines

Find cheap flights from St. Louis to San Juan by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from St. Louis to San Juan.

Cheapest
STL
11:39
13h 5m
1 transfer
SJU
01:44
St. Louis Lambert International Airport - Luis Muñoz Marín International Airport
Sat, May 4Spirit Airlines
US$80
STL
11:39
13h 5m
1 transfer
SJU
01:44
St. Louis Lambert International Airport - Luis Muñoz Marín International Airport
Sat, May 4Spirit Airlines
US$80
Find More Flights

Frequently Asked Questions

When are flight tickets from St. Louis (STL) to San Juan (SJU) the cheapest?
Airlines adjust prices for flights from St. Louis to San Juan based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from St. Louis (STL) to San Juan (SJU) cost?
According to Trip.com's data, the lowest price is around $495.
How long does it take to fly from St. Louis (STL) to San Juan (SJU) and what is the distance?
It takes around 4 hours 30 minutes to fly from St. Louis (STL) to San Juan (SJU).
What is the transportation method from the main airport to downtown in San Juan?
- The distance from Luis Muñoz Marín International Airport to downtown is about 11km. It takes about 30 minutes by taxi.
What are the most popular airlines that fly from St. Louis (STL) to San Juan (SJU)?
Airlines with flights from St. Louis (STL) to San Juan (SJU): Southwest Airlines.

How to find a cheap flight from St. Louis to San Juan

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from St. Louis to San Juan. Book your flights at the right time and save more.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

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Look Out for Deals

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Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

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St. Louis to San Juan Flight Information

Cheapest nonstop flight price	$80
Cheapest round-trip ticket price	$398
Off-season for travel	May
Peak season for travel	October
Flight distance	3,237.41km
Average flight time	4 hours 30 minutes
Popular airline	American Airlines