$100 Cheap flight deals from St. Louis (STL) to San Juan (SJU)

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This Weekend's Flight Deals from St. Louis to San Juan

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jul 12 - Mon, Jul 14
STL
Lambert-St. Louis Intl.
SJU
Luis Munoz Marin Intl.
$390 Roundtrip, found 10 hours ago
$390
Roundtrip
found 10 hours ago
Select Spirit Airlines flight, departing Sat, Jul 12 from Lambert-St. Louis Intl. to Luis Munoz Marin Intl., returning Mon, Jul 14, priced at $390 found 10 hours ago

Airfares from $100 One Way, $214 Round Trip from St. Louis to San Juan

Prices starting at $214 for return flights and $100 for one-way flights to San Juan were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 14 - Wed, Oct 15
STL
St. Louis
SJU
San Juan
$214 Roundtrip, found 2 days ago
$214
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 14 from St. Louis to San Juan, returning Wed, Oct 15, priced at $214 found 2 days ago
Sat, Jul 19 - Fri, Jul 25
STL
St. Louis
SJU
San Juan
$219 Roundtrip, found 14 hours ago
$219
Roundtrip
found 14 hours ago
Select Spirit Airlines flight, departing Sat, Jul 19 from St. Louis to San Juan, returning Fri, Jul 25, priced at $219 found 14 hours ago
Sat, Sep 20 - Fri, Sep 26
STL
St. Louis
SJU
San Juan
$219 Roundtrip, found 8 hours ago
$219
Roundtrip
found 8 hours ago
Select Southwest Airlines flight, departing Sat, Sep 20 from St. Louis to San Juan, returning Fri, Sep 26, priced at $219 found 8 hours ago
Mon, Sep 8 - Sat, Sep 13
STL
St. Louis
SJU
San Juan
$219 Roundtrip, found 1 day ago
$219
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Sep 8 from St. Louis to San Juan, returning Sat, Sep 13, priced at $219 found 1 day ago
Sat, Sep 20 - Fri, Sep 26
STL
St. Louis
SJU
San Juan
$222 Roundtrip, found 8 hours ago
$222
Roundtrip
found 8 hours ago
Select Delta flight, departing Sat, Sep 20 from St. Louis to San Juan, returning Fri, Sep 26, priced at $222 found 8 hours ago

San Juan economy flight packages

Price found within the past 48 hours. Click for updated prices.
The Oliver Hotel
2.0-star property

The Oliver Hotel

9/10 Wonderful! (25 reviews)

Aug 9 - Aug 13

4 night stay

St. Louis (STL) to San Juan (SJU)

Spirit Airlines • Non-stop • Coach

San Juan (SJU) to St. Louis (STL)

Southwest Airlines • Non-stop • Coach
Save 100% on your flight
per person
found 1 day ago
El Colonial - Adults Only
3.5-star property

El Colonial - Adults Only

9.4/10 Exceptional! (1,215 reviews)

Aug 9 - Aug 13

4 night stay

St. Louis (STL) to San Juan (SJU)

Spirit Airlines • Non-stop • Coach

San Juan (SJU) to St. Louis (STL)

Southwest Airlines • Non-stop • Coach
Save 100% on your flight
per person
found 1 day ago
This was the perfect spot the night before our cruise. Extremely convenient to all of the highlights of San Juan and the cruise port. The staff was excellent and very welcoming

Reviewed on Feb 15, 2025

THE BUOY
3.5-star property

THE BUOY

10/10 Exceptional! (16 reviews)

Aug 25 - Aug 31

6 night stay

St. Louis (STL) to San Juan (SJU)

Delta • Non-stop • Coach

San Juan (SJU) to St. Louis (STL)

Frontier Airlines • Non-stop • Coach
Save 100% on your flight
per person
found 1 day ago
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More About Flying To San Juan from St. Louis

Route Information for Flights from St. Louis to San Juan

Origin Airport IATA Code
STL
Destination Airport IATA Code
SJU
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

St. Louis to San Juan

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Low-cost St. Louis to San Juan flights can be booked with total confidence through Orbitz every time. We also make it very easy to cancel flights or other travel arrangements online should you need to. You can also add activities and car rentals to your flight or hotel reservation for a hassle-free trip.

Frequently asked questions

Am I able to catch a flight from St. Louis to San Juan now?
The Covid-19 Travel Advisor can help you with queries about travel restrictions and quarantine requirements when taking a flight from St. Louis to San Juan.
What is the shortest flight from St. Louis to San Juan?
The quickest flight from Lambert-St. Louis Intl. Airport (STL) to San Juan Airport (SJU-Luis Munoz Marin Intl.) is 4 hours and 57 minutes. Pack a few things in your carry-on to help pass the time, like a gripping read or your travel journal.
If I am not able to travel due to COVID-19, can I cancel my flight to San Juan?
We get that traveling right now has its challenges, so it's good to know that many reservations booked through us are able to be cancelled or changed. If your travel plans to San Juan have been affected by COVID-19, a lot of airlines are making things easier by offering credits to use at a later date. Just sign in to your account and you'll quickly see what options are available. Our Customer Service Portal is the place to go for more information.
Are there flights to San Juan with flexible change policies?
In most cases you'll have the option to reschedule your flight to San Juan without a change fee. All you have to do then is pay the difference between the old flight and the new one. Look for the "no change fees" filter and book with confidence.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2020 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data the cheapest month to fly is August. Perfect for those who need a weekend getaway, or just a break from it all before the weather changes. Be aware that the most expensive time to fly is the height of summer, with ticket prices peaking in the month of June.
How can I save money on flights?
To really save big on your next vacation, think outside the box. Select two different airlines or fare types for your return trip and you'll generally get a much better deal. Those who tried this on Orbitz in 2020 saved up to 45% on their airfares. Get mixing and matching today!

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.