Cheap flights from St. Louis (STL) to San Juan from $92

This is the cheapest one-way flight price, found on 11/29. Prices may vary by date and flight preferences.
STL — SJU
Dec 5 — Dec 121

Flights from San Juan to St. Louis

How to find the cheapest flight from St. Louis (STL) to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 30, 2023.

Popular in

June

Cheapest in

April

Round-trip from

$250

One-way from

$153
High demand for flights, 19% potential price rise
Best time to find cheap flights, 31% potential price drop
From Lambert-St Louis to San Juan
One-way flight from Lambert-St Louis to San Juan

STL - SJU

Price

$250 - $570

SJU

Temperature

77 - 82.4 °F

SJU

Rainfall

2.2 - 6.1 inches

How far in advance should I book a flight from St. Louis to San Juan?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 44 days in advance, which can save you up to 41% on flights from St. Louis to San Juan compared to booking the week you need them. Waiting 44 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $268. For sooner than that we have options available in the next 3 days from $597.

What is the cheapest month to fly from St. Louis to San Juan?

April is one of the best times of the year to fly to San Juan from St. Louis. Prices for April average $482 per person but you can even find prices for as low as $172. The most expensive prices can be found in the month of June. Opting for a April flight can save you 23% on your journey compared to booking in June

When is the cheapest time to fly from St. Louis to San Juan (STL - SJU)?

When flying from St. Louis to San Juan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap American Airlines flights from St. Louis to San Juan

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and San Juan. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,965,316 searches. Data last updated November 30, 2023.
Find some of the cheapest American Airlines flights traveling from St. Louis to San Juan. Come back soon if you're not finding the exact deal you're looking for.

Cheap Spirit Airlines flights from St. Louis to San Juan

Explore cheap flight options specifically provided by Spirit Airlines for the route between St. Louis and San Juan. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,965,316 searches. Data last updated November 30, 2023.
Take a gander at the lowest prices we've found on Spirit Airlines flights from St. Louis to San Juan. Deals are refreshing constantly so come back soon for more options.

Cheap St. Louis to San Juan flights in November & December 2023

Find cheap flight options from St. Louis to San Juan specifically for the months of November and December 2023. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,965,316 searches. Prices were last updated on November 30, 2023.
These are some of the most attractive deals on flights from St. Louis to San Juan in 2023. Check back soon for alternative fares.

St. Louis to San Juan 2023 flight deals

Discover exclusive flight deals for travel between St. Louis and San Juan in 2023. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,965,316 searches. Data last updated November 30, 2023.
These are some of the most attractive deals on flights from St. Louis to San Juan in 2023. Check back soon for alternative fares.

St. Louis to San Juan flights leaving soon

Find last-minute flight options from St. Louis to San Juan for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,965,316 searches. Data last updated November 30, 2023.
Book one of these great deals on flights from St. Louis to San Juan. Users should be sure to double check the price, date, and time of their last-minute flight.

One-way flights to San Juan from St. Louis

Search for one-way flight options from St. Louis to San Juan. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,965,316 searches. Data last updated November 30, 2023.
If you're seeking multiple options on one-way flights from St. Louis to San Juan, be sure to check out these deals, which are updated often. Those needing a return flight from St. Louis to San Juan can use the search form above.

Find flights from St. Louis to San Juan within your budget

Customize your flight search to find flights from St. Louis to San Juan 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, Cheapflights users made 2,965,316 searches. Data last updated November 30, 2023.

Fly from

Any airport

Fly to

Any airport

Budget

$166 - $397

Route

Depart

Return

Price

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Sat 1/13

1 stop10h 28m

San Juan Luis Munoz Marin Intl

Sat 1/20

1 stop6h 55m

$166

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Sat 1/13

1 stop10h 28m

San Juan Luis Munoz Marin Intl

Fri 1/19

1 stop7h 55m

$168

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Thu 1/25

1 stop5h 58m

San Juan Luis Munoz Marin Intl

Fri 1/26

1 stop7h 55m

$176

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Sat 1/13

1 stop14h 14m

San Juan Luis Munoz Marin Intl

Fri 1/19

1 stop20h 08m

$185

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Sat 1/13

2 stops25h 41m

San Juan Luis Munoz Marin Intl

Sat 1/20

1 stop6h 55m

$193

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Thu 2/1

1 stop5h 58m

San Juan Luis Munoz Marin Intl

Tue 2/13

1 stop9h 50m

$206

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Thu 2/29

1 stop8h 02m

San Juan Luis Munoz Marin Intl

Mon 3/4

1 stop7h 49m

$234

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Mon 4/22

1 stop15h 05m

San Juan Luis Munoz Marin Intl

Fri 4/26

1 stop6h 58m

$238

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Mon 2/5

2 stops25h 51m

San Juan Luis Munoz Marin Intl

Thu 2/8

2 stops15h 15m

$397

Flights are sorted by cheapest first

Deals found on 11/29

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated November 30, 2023.
See what other customers who have flown with American Airlines, Spirit Airlines and United Airlines from St. Louis to San Juan have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
7.9
Good
3,035 reviews

Entertainment

7.8

Crew

8.5

Boarding

8.0

Comfort

7.9

Food

7.2

Overall

7.9

Reviews

1 / 10

The flight was not listed on the screens so we had to guess which gate to go to from another similar flight and got lucky. Flight crew seemed irritated to be there.

7.9
Good
3,035 reviews
7.9
Good
3,035 reviews

Entertainment

7.8

Crew

8.5

Boarding

8.0

Comfort

7.9

Food

7.2

Overall

7.9

Reviews

1 / 10

The flight was not listed on the screens so we had to guess which gate to go to from another similar flight and got lucky. Flight crew seemed irritated to be there.

7.4
Good
1,897 reviews
7.9
Good
3,035 reviews

Entertainment

7.8

Crew

8.5

Boarding

8.0

Comfort

7.9

Food

7.2

Overall

7.9

Reviews

1 / 10

The flight was not listed on the screens so we had to guess which gate to go to from another similar flight and got lucky. Flight crew seemed irritated to be there.

7.2
Good
2,645 reviews
7.9
Good
3,035 reviews

Entertainment

7.8

Crew

8.5

Boarding

8.0

Comfort

7.9

Food

7.2

Overall

7.9

Reviews

1 / 10

The flight was not listed on the screens so we had to guess which gate to go to from another similar flight and got lucky. Flight crew seemed irritated to be there.

6.3
Okay
1,495 reviews
7.9
Good
3,035 reviews

Entertainment

7.8

Crew

8.5

Boarding

8.0

Comfort

7.9

Food

7.2

Overall

7.9

Reviews

1 / 10

The flight was not listed on the screens so we had to guess which gate to go to from another similar flight and got lucky. Flight crew seemed irritated to be there.

5.8
Fair
762 reviews
7.9
Good
3,035 reviews

Entertainment

7.8

Crew

8.5

Boarding

8.0

Comfort

7.9

Food

7.2

Overall

7.9

Reviews

1 / 10

The flight was not listed on the screens so we had to guess which gate to go to from another similar flight and got lucky. Flight crew seemed irritated to be there.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from St. Louis to San Juan?

Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to San Juan. On average, Lambert-St Louis has 0 outbound flights to San Juan per day from 6 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

Can I find flights from St. Louis to San Juan for under $200 on Cheapflights?

Yes, there are multiple flights from St. Louis to San Juan for under $200. The cheapest flight booked recently is on Spirit Airlines for just $166, but on average you can expect to pay $199.

Are there last-minute flights available from St. Louis to San Juan for under $300?

There are currently 20+ open flights from St. Louis to San Juan within the next 7 days for less than $300.

What is the cheapest airline to fly from St. Louis to San Juan round-trip?

Our cheapest airline available from St. Louis to San Juan is Spirit Airlines. Our recent data shows that you can find tickets from as low as $166 on this airline. Spirit Airlines is 65% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from St. Louis to San Juan one-way?

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $92. Frontier flights start at $110 while deals on American Airlines start at $160 one-way.

What are the most popular airlines that fly from St. Louis to San Juan?

What does STL to SJU mean?

Great question - STL to SJU just means Lambert-St Louis Airport to San Juan Luis Munoz Marin Intl Airport. Now you’ll know what these unique codes when you look for flights! San Juan Isla Grande Airport (SIG), Ponce Mercedita Airport (PSE), Vieques Airport (VQS), Culebra Airport (CPX), Ceiba J. Aponte de la Torre Airport (NRR) are some additional IATA codes for airports related to your trip.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 6 airlines flying from St. Louis to San Juan

Discover the top 6 airlines that operate flights from St. Louis to San Juan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,965,316 searches. Data last updated November 30, 2023.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$165Average$255FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$175Average$346FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
DeltaCheapest$271Average$524FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$281Average$602FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$287Average$551FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Linear Air TaxiCheapest$11,964Average$87,598FlexibilityNo cancel feeOn-timeN/A
Search Linear Air Taxi flights

Search flights to San Juan by cabin class

Hourly flight availability from St. Louis to San Juan

Find hourly flight availability from St. Louis to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 30, 2023.
100%of flight departuresEarly morningMidnight to 6 am
0%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to San Juan

Explore weekly flight availability from St. Louis to San Juan. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 30, 2023.
Sunday0daily flights
Monday0daily flights
Tuesday0daily flights
Wednesday0daily flights
Thursday0daily flights
Friday0daily flights
Saturday2daily flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to San Juan?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Juan from St. Louis today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from St. Louis to San Juan?

Cheapflights simply makes it quick and affordable to book flights from St. Louis to San Juan by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from St. Louis to San Juan with no change fees?

Yes! Cheapflights helps users easily find flights from St. Louis to San Juan with no change fees.

Can Cheapflights notify me if prices for flights from St. Louis to San Juan become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Juan from St. Louis today and book when prices fit your budget.

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