STL - SJU Price | $264 - $532 |
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SJU Temperature | 77 - 82.4 °F |
SJU Rainfall | 2.2 - 6.1 inches |
Popular in | June | High demand for flights, 23% potential price rise |
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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 |
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.
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 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.
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
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
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
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
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
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
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
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.
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.
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.
There are currently 20+ open flights from St. Louis to San Juan within the next 7 days for less than $200.
Nonstop flights are available for this route on the following days: Friday.
1 flight departure from St. Louis to San Juan per day on average.
Morning (6am - Noon) - 100% of flight departures
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.
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.
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.
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.
0%of flight departures | Early morningMidnight to 6 am |
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50%of flight departures | Morning6 am to noon |
50%of flight departures | AfternoonNoon to 6 pm |
0%of flight departures | Evening6 pm to midnight |
Sunday | 0daily flights |
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Monday | 2daily flights |
Tuesday | 2daily flights |
Wednesday | 2daily flights |
Thursday | 2daily flights |
Friday | 2daily flights |
Saturday | 0daily flights |