Round-trip from | $209 (Delta) |
---|---|
One-way from | $105 (Delta) |
Popular in | July |
Cheapest in | April |
Average price | $321 |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Mon 9/22
6:00 am-1:23 pm
1 stop6h 23m
San Juan Luis Munoz Marin Intl
Sat 9/27
5:19 pm-11:39 pm
1 stop7h 20m
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Fri 9/19
6:15 am-3:42 pm
1 stop8h 27m
San Juan Luis Munoz Marin Intl
Thu 9/25
2:55 pm-10:00 pm
1 stop8h 05m
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sat 5/10
10:10 am-7:07 pm
1 stop7h 57m
San Juan Luis Munoz Marin Intl
Sat 5/17
8:12 pm-9:15 am
1 stop14h 03m
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sat 5/17
10:10 am-7:07 pm
1 stop7h 57m
San Juan Luis Munoz Marin Intl
Sat 5/17
9:30 pm-12:06 am
1 stop27h 36m
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Mon 9/22
5:31 am-12:45 pm
1 stop6h 14m
San Juan Luis Munoz Marin Intl
Sat 9/27
8:30 am-8:23 pm
2 stops12h 53m
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Mon 5/5
5:45 pm-2:51 am
1 stop8h 06m
San Juan Luis Munoz Marin Intl
Sat 5/10
12:05 pm-12:06 am
1 stop13h 01m
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sat 5/10
1:25 pm-6:50 pm
Nonstop4h 25m
San Juan Luis Munoz Marin Intl
Sat 5/17
3:20 pm-10:00 pm
1 stop7h 40m
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sun 5/25
7:05 am-4:33 pm
1 stop8h 28m
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sun 5/18
5:12 am-8:33 pm
1 stop14h 21m
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sat 8/9
5:30 pm-5:30 am
2 stops11h 00m
The price you pay for your flight from St. Louis to San Juan may vary depending on when you book. For the best chance of a lower fare, look to book 29 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, September is the cheapest month in which you can book a flight from St. Louis to San Juan (average of $254). Flying from St. Louis to San Juan in December is currently the most expensive (average of $336). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from St. Louis to San Juan, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 48% versus a flight in the morning.
Travelers seeking maximum savings on their St. Louis to San Juan flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
In terms of precipitation, rainfall in San Juan ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan when rainfall is around 2.2 in.
If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).
Comfort
Crew
Overall
Entertainment
Boarding
Food
Reviews
Gina,Apr 2025
LAS - DEN
Comfort
Crew
Overall
Entertainment
Boarding
Food
Reviews
Gina,Apr 2025
LAS - DEN
Comfort
Crew
Overall
Entertainment
Boarding
Food
Reviews
Gina,Apr 2025
LAS - DEN
Comfort
Crew
Overall
Entertainment
Boarding
Food
Reviews
Gina,Apr 2025
LAS - DEN
Comfort
Crew
Overall
Entertainment
Boarding
Food
Reviews
Gina,Apr 2025
LAS - DEN
Comfort
Crew
Overall
Entertainment
Boarding
Food
Reviews
Gina,Apr 2025
LAS - DEN
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$140 | Average$267 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$166 | Average$312 | FlexibilityNo cancel fee | On-time65% | |
Cheapest$254 | Average$411 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$261 | Average$398 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$265 | Average$499 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$347 | Average$595 | FlexibilityNo cancel fee | On-time63% |