$103 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, Aug 9 - Sat, Aug 16
STL
Lambert-St. Louis Intl.
SJU
Luis Munoz Marin Intl.
$248 Roundtrip, found 2 days ago
$248
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Aug 9 from Lambert-St. Louis Intl. to Luis Munoz Marin Intl., returning Sat, Aug 16, priced at $248 found 2 days ago

Airfares from $103 One Way, $205 Round Trip from St. Louis to San Juan

Prices starting at $205 for return flights and $103 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, Nov 18 - Tue, Nov 25
STL
St. Louis
SJU
San Juan
$205 Roundtrip, found 22 hours ago
$205
Roundtrip
found 22 hours ago
Select Southwest Airlines flight, departing Tue, Nov 18 from St. Louis to San Juan, returning Tue, Nov 25, priced at $205 found 22 hours ago
Tue, Nov 18 - Tue, Nov 25
STL
St. Louis
SJU
San Juan
$210 Roundtrip, found 22 hours ago
$210
Roundtrip
found 22 hours ago
Select Delta flight, departing Tue, Nov 18 from St. Louis to San Juan, returning Tue, Nov 25, priced at $210 found 22 hours ago
Mon, Sep 15 - Fri, Sep 19
STL
St. Louis
SJU
San Juan
$215 Roundtrip, found 17 hours ago
$215
Roundtrip
found 17 hours ago
Select Delta flight, departing Mon, Sep 15 from St. Louis to San Juan, returning Fri, Sep 19, priced at $215 found 17 hours ago
Tue, Nov 18 - Tue, Nov 25
STL
St. Louis
SJU
San Juan
$225 Roundtrip, found 22 hours ago
$225
Roundtrip
found 22 hours ago
Select United flight, departing Tue, Nov 18 from St. Louis to San Juan, returning Tue, Nov 25, priced at $225 found 22 hours ago
Mon, Nov 17 - Thu, Nov 27
STL
St. Louis
SJU
San Juan
$228 Roundtrip, found 4 days ago
$228
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 17 from St. Louis to San Juan, returning Thu, Nov 27, priced at $228 found 4 days ago

San Juan economy flight packages

Price found within the past 48 hours. Click for updated prices.
Segovia Studio Units
3.0-star property

Segovia Studio Units

8.6/10 Excellent! (674 reviews)

Sep 18 - Sep 23

5 night stay

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

Southwest Airlines • Non-stop roundtrip • Coach
per person
found 21 hours ago
Amazing stay will be back

Reviewed on Mar 16, 2025

Dorado Beach 5 Bedroom Villa
3.5-star property

Dorado Beach 5 Bedroom Villa

No reviews

Sep 7 - Sep 11

4 night stay

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

Delta • Non-stop roundtrip • Coach
Save 100% on your flight
per person
found 13 hours ago
Coral by the Sea Hotel
3.0-star property

Coral by the Sea Hotel

6/10 (1,872 reviews)

Sep 18 - Sep 23

5 night stay

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

Southwest Airlines • Non-stop roundtrip • Coach
per person
found 21 hours ago
We wanted to stay near Isla Verde. The hotel is located very close to the airport. However, we discovered cockroaches in our room and we had cold water for a shower. I could’ve dealt with the cold water shower if we didn’t have the cockroaches. Not all the lights in the room worked.

Reviewed on Jul 9, 2025

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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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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.