Cheap flights from St. Louis (STL) to San Juan
How to find the cheapest flight from St. Louis (STL) to San Juan
All the information you need to plan the best STL to PR1 flight in 2023: compare St. Louis to San Juan flight prices with the expected peak season, weather and rainfall in San Juan.
STL - SJU Price | $264 - $532 |
|---|---|
SJU Temperature | 77 - 82.4 °F |
SJU Rainfall | 2.2 - 6.1 inches |
| Popular in | June | High demand for flights, 23% potential price rise |
|---|---|---|
| Cheapest in | September | Best time to find cheap flights, 35% potential price drop |
| Round-trip from | $264 | From Lambert-St Louis to San Juan |
| One-way from | $158 | One-way flight from Lambert-St Louis to San Juan |
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 27 days in advance, which can save you up to 34% on flights from St. Louis to San Juan compared to booking the week you need them. Waiting 27 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 $426. For sooner than that we have options available in the next 3 days from $555.
What is the cheapest month to fly from St. Louis to San Juan?
September is one of the best times of the year to fly to San Juan from St. Louis. Prices for September average $408 per person but you can even find prices for as low as $188. The most expensive prices can be found in the month of June. Opting for a September flight can save you 30% 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 flights from St. Louis to San Juan in February, March 2023
The best prices found for STL to San Juan flights for February, March
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
9h 46mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
10h 17mMultiple Airlines
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
17h 15mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
12h 43mMultiple Airlines
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
29h 24mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
10h 03mMultiple Airlines
St. Louis to San Juan 2023 flight deals
Cheap flights to San Juan from St. Louis found for this year
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
6h 57mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
13h 21mFrontier
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
17h 15mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
12h 43mMultiple Airlines
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
29h 24mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
10h 03mMultiple Airlines
Cheap Frontier flights from St. Louis to San Juan
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
6h 57mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
13h 21mFrontier
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
12h 18mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
12h 22mFrontier
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
14h 24mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
14h 24mFrontier
Cheap Spirit Airlines flights from St. Louis to San Juan
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
9h 55mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
8h 39mSpirit Airlines
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
15h 07mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
10h 17mSpirit Airlines
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
13h 57mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
17h 45mSpirit Airlines
Last minute flights from St. Louis to San Juan
Late deals on return flights to San Juan from St. Louis, departing today and this week
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
9h 46mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
10h 17mMultiple Airlines
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
17h 15mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
12h 43mMultiple Airlines
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
29h 24mSan Juan Luis Munoz Marin Intl
Lambert-St Louis
1 stop
10h 03mMultiple Airlines
One-way flights to San Juan from St. Louis
The cheapest one-way flights from St. Louis to San Juan
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
14h 24mFrontier
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
10h 55mFrontier
Lambert-St Louis
San Juan Luis Munoz Marin Intl
1 stop
9h 19mMultiple Airlines
Reviews of Airlines Servicing San Juan
Overall
Boarding
Food
Entertainment
Crew
Comfort
Reviews
Everything was great except Spirit airlines damaged my brand new Porta Suitcase that I purchased in Peru. When I retrieved my Checked suitcase at ft Lauderdale Airport, my suitcase was damaged with a dent on 1 of the corners of suitcase
Overall
Boarding
Food
Entertainment
Crew
Comfort
Reviews
Everything was great except Spirit airlines damaged my brand new Porta Suitcase that I purchased in Peru. When I retrieved my Checked suitcase at ft Lauderdale Airport, my suitcase was damaged with a dent on 1 of the corners of suitcase
Overall
Boarding
Food
Entertainment
Crew
Comfort
Reviews
Everything was great except Spirit airlines damaged my brand new Porta Suitcase that I purchased in Peru. When I retrieved my Checked suitcase at ft Lauderdale Airport, my suitcase was damaged with a dent on 1 of the corners of suitcase
Related info for your journey
Useful info, stats and facts about St. Louis to San Juan flights.
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 1 outbound flight to San Juan per day from 11 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.
Which airlines flying from Lambert-St Louis to San Juan have flexible cancellations due to COVID-19?
American Airlines, Spirit Airlines, and Frontier are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.
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 Frontier for just $164, but on average you can expect to pay $181.
Are there last-minute flights available from St. Louis to San Juan for under $200?
There are currently 20+ open flights from St. Louis to San Juan within the next 7 days for less than $200.
What days are nonstop flights available from St. Louis to San Juan?
Nonstop flights are available for this route on the following days: Friday.
How many flights depart from St. Louis to San Juan on average per day?
1 flight departure from St. Louis to San Juan per day on average.
Morning (6am - Noon) - 100% of flight departures
How long is the flight from St. Louis to San Juan?
For as low as $164, Frontier can have you in San Juan from St. Louis in 6h 57m. The distance between St. Louis and San Juan is about 2036 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from St. Louis to San Juan round-trip?
Our cheapest airline available from St. Louis to San Juan is Frontier. Our recent data shows that you can find tickets from as low as $164 on this airline. An additional option worth looking into is Spirit Airlines, starting at $197. Frontier is 59% cheaper than the average price of flights available within the next 90 days to this destination.
What are the most popular airlines that fly from St. Louis to San Juan?
Consider Undisclosed Carrier, American Airlines or Alaska Airlines when booking your flight. These represent the most popular airlines when flying from St. Louis to San Juan.
What are the cheapest flights from St. Louis to San Juan?
The cheapest flight price from St. Louis to San Juan is $85. On average you can expect to pay $724. The most popular route, (Lambert-St Louis - San Juan Luis Munoz Marin Intl), can usually be booked for $164.
Other flights from St. Louis
Alternative routes for St. Louis to San Juan
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from St. Louis to San Juan
The chart below displays the airlines Cheapflights users traveling from St. Louis to San Juan choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Hourly flight availability from St. Louis to San Juan
See what time of day planes typically take off from St. Louis to San Juan
| 0%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 50%of flight departures | Morning6 am to noon |
| 50%of flight departures | AfternoonNoon to 6 pm |
| 0%of flight departures | Evening6 pm to midnight |
Weekly flight availability from St. Louis to San Juan
See how many times per day planes take to the skies headed from St. Louis to San Juan
| Sunday | 0daily flights |
|---|---|
| Monday | 2daily flights |
| Tuesday | 2daily flights |
| Wednesday | 2daily flights |
| Thursday | 2daily flights |
| Friday | 2daily flights |
| Saturday | 0daily flights |