$107+ Cheap flights from Puerto Rico to St. Louis (STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Puerto Rico to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Puerto Rico to St. Louis
Keep the following information in mind while searching for Puerto Rico to St. Louis flight deals. Data was last updated June 18, 2025.
Round-trip from | $219 (FlightHub) |
|---|---|
One-way from | $107 (Priceline) |
Popular in | June |
Cheapest in | January |
Average price | $568 |
Find flight deals from Puerto Rico to St. Louis
Cheapest flights from Puerto Rico to St. LouisExplore the most affordable flight options available from Puerto Rico to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.
Explore the most affordable flight options available from Puerto Rico to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.
This FlightHub deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This CheapOair deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Cheapflightsfares deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Puerto Rico to St. Louis 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 2,558,603 searches. Data last updated June 18, 2025.
Use the filters below to find and compare flights from Puerto Rico to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Wed 7/9
9:30 am-11:47 pm
1 stop15h 17m
Lambert-St Louis
Wed 7/16
5:40 pm-9:04 am
1 stop14h 24m
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Thu 7/31
7:54 am-11:59 pm
1 stop17h 05m
Lambert-St Louis
Tue 8/12
6:00 am-10:49 pm
1 stop15h 49m
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Fri 8/15
7:30 am-4:06 pm
1 stop9h 36m
Lambert-St Louis
Sat 9/6
7:00 am-4:36 pm
1 stop8h 36m
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Wed 7/9
1:37 am-9:52 am
1 stop9h 15m
Lambert-St Louis
Sun 7/13
5:40 pm-2:39 am
1 stop7h 59m
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Sun 7/27
1:37 am-9:52 am
1 stop9h 15m
Lambert-St Louis
Wed 8/6
11:24 am-1:35 am
1 stop13h 11m
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Thu 8/14
3:30 pm-10:35 pm
2 stops8h 05m
Lambert-St Louis
Sun 8/17
6:15 am-1:15 pm
1 stop6h 00m
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Thu 8/14
2:05 am-9:28 am
1 stop8h 23m
Lambert-St Louis
Sat 9/6
6:15 am-3:42 pm
1 stop8h 27m
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Fri 10/10
3:40 am-1:27 pm
1 stop10h 47m
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Wed 10/8
6:10 am-8:00 pm
2 stops14h 50m
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Thu 7/17
1:37 am-9:52 am
1 stop9h 15m
Best time to book a flight from Puerto Rico to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Puerto Rico with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Puerto Rico to St. Louis
What is the cheapest month to book a flight from Puerto Rico to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Puerto Rico to St. Louis (average of $311). Flying from Puerto Rico to St. Louis in March is currently the most expensive (average of $356). 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.
What is the cheapest time of day to fly from PR to STL?
Find hourly flight availability from Puerto Rico to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 18, 2025.
When flying from Puerto Rico to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Rainfall in St. Louis by month
Plan your trip to St. Louis by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.
Temperature in St. Louis by month
Plan your trip to St. Louis by taking into account the average temperature totals by month.
If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated June 18, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta and United Airlines from Puerto Rico to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Crew
Entertainment
Overall
Food
Boarding
Reviews
John,May 2025
PVD - BNA
Comfort
Crew
Entertainment
Overall
Food
Boarding
Reviews
John,May 2025
PVD - BNA
Comfort
Crew
Entertainment
Overall
Food
Boarding
Reviews
John,May 2025
PVD - BNA
Comfort
Crew
Entertainment
Overall
Food
Boarding
Reviews
John,May 2025
PVD - BNA
Comfort
Crew
Entertainment
Overall
Food
Boarding
Reviews
John,May 2025
PVD - BNA
Comfort
Crew
Entertainment
Overall
Food
Boarding
Reviews
John,May 2025
PVD - BNA
Related info for your journey
Find useful and relevant information for your journey from Puerto Rico to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Puerto Rico to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Puerto Rico to St. Louis
Discover the top 5 airlines that operate flights from Puerto Rico to St. Louis. 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 2,558,603 searches. Data last updated June 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$163 | Average$240 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$244 | Average$375 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$254 | Average$416 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$255 | Average$462 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$279 | Average$580 | FlexibilityNo cancel fee | On-time63% |