HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$57+ Cheap flights from San Juan 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — STL
Nov 24 — Dec 11
Sun 11/24
Sun 12/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Juan 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.

The best prices from San Juan to Lambert-St Louis are usually found in February or March, booked 65 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Cheap flight deals from San Juan to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to St. Louis (STL). 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 19, 2024.

Popular in

June

Cheapest in

February

Round-trip from

$134
(eDestinos)

One-way from

$57
(eDestinos)
High demand for flights, 24% potential price rise
Search Deals
Best time to find cheap flights, 19% potential price drop
Search Deals
From San Juan to Lambert-St Louis
Search Deals
One-way flight from San Juan to Lambert-St Louis
Search Deals

Find flight deals from San Juan to St. Louis

Cheapest flights from San Juan to St. Louis
Explore the most affordable flight options available from San Juan to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 19, 2024.

This eDestinos deal was found by Cheapflights users on 11/18. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/55:05 pmSJU - STL
1 stop8h 19mFrontier
Mon 12/95:02 pmSTL - SJU
1 stop7h 38mFrontier
Deal found 11/18$152
This eDestinos deal was found by Cheapflights users on 11/19. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/56:20 amSJU - STL
2 stops19h 04mMultiple Airlines
Mon 12/95:02 pmSTL - SJU
1 stop17h 31mMultiple Airlines
Deal found 11/19$237
This eDestinos deal was found by Cheapflights users on 11/18. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/279:13 pmSJU - STL
1 stop21h 49mSpirit Airlines
Thu 1/24:27 pmSTL - SJU
1 stop25h 55mSpirit Airlines
Deal found 11/18$352
This American Airlines deal was found by Cheapflights users on 11/17. 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.
Thu 12/55:30 amSJU - STL
2 stops9h 57mAmerican Airlines
Mon 12/96:00 amSTL - SJU
1 stop15h 50mAmerican Airlines
Deal found 11/17$369
This KAYAK deal was found by Cheapflights users on 11/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/152:05 amSJU - STL
1 stop10h 54mUnited Airlines
Wed 12/186:15 amSTL - SJU
1 stop8h 21mUnited Airlines
Deal found 11/18$534
This Southwest deal was found by Cheapflights users on 11/18. 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.
Mon 12/29:55 pmSJU - STL
1 stop13h 25mSouthwest
Fri 1/31:55 pmSTL - SJU
2 stops8h 45mSouthwest
Deal found 11/18$574
This Alaska Airlines deal was found by Cheapflights users on 11/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/166:25 amSJU - STL
3 stops32h 59mAlaska Airlines
Thu 12/199:39 amSTL - SJU
3 stops27h 31mAlaska Airlines
Deal found 11/18$3,000

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

Customize your flight search to find flights from San Juan 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 2,659,078 searches. Data last updated November 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 12/5

5:05 pm-11:24 pm

1 stop8h 19m

Lambert-St Louis

Mon 12/9

5:02 pm-2:40 am

1 stop7h 38m

$152

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 2/13

5:19 pm-11:43 pm

1 stop8h 24m

Lambert-St Louis

Tue 2/18

5:20 pm-8:40 pm

1 stop25h 20m

$234

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 2/13

8:15 am-4:06 pm

2 stops9h 51m

Lambert-St Louis

Tue 2/18

10:49 am-10:35 pm

2 stops9h 46m

$266

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Mon 1/27

2:05 am-2:14 pm

2 stops14h 09m

Lambert-St Louis

Tue 2/4

1:02 pm-12:36 am

2 stops9h 34m

$344

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Fri 12/27

9:13 pm-5:02 pm

1 stop21h 49m

Lambert-St Louis

Thu 1/2

4:27 pm-8:22 pm

1 stop25h 55m

$352

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Sun 1/19

9:05 am-4:55 pm

1 stop9h 50m

Lambert-St Louis

Sat 2/1

12:50 pm-7:05 pm

Nonstop4h 15m

$540

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Fri 4/11

3:25 pm-12:01 am

3 stops33h 36m

Lambert-St Louis

Sat 4/19

4:30 pm-1:54 pm

3 stops20h 24m

$2,930

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Sun 1/5

6:30 am-3:54 pm

2 stops11h 24m

Lambert-St Louis

Sun 1/12

11:09 am-11:59 pm

2 stops10h 50m

$5,132

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 12/12

5:05 pm-11:24 pm

1 stop8h 19m

$57

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Wed 2/19

9:30 pm-7:07 am

1 stop11h 37m

$117

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 16 results
1
2

Best time to book a flight from San Juan to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from San Juan with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from San Juan to St. Louis

Get recent, data-driven insights about flights from San Juan to St. Louis including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from San Juan to St. Louis. Price data was last updated on November 15, 2024.

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Juan to St. Louis?

Currently, September is the cheapest month in which you can book a flight from San Juan to St. Louis (average of $308). Flying from San Juan to St. Louis in March is currently the most expensive (average of $357). 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 SJU to STL?

Find hourly flight availability from San Juan 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 November 19, 2024.

One of the essential ways to save on airfare from San Juan to St. Louis is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 45% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from San Juan to St. Louis. Price data was last updated on November 18, 2024.

Travelers seeking maximum savings on their San Juan to St. Louis flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 November 19, 2024.
Read through reviews of airlines operating flights from San Juan to St. Louis, such as Frontier, American Airlines and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,460 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,765 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,173 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from San Juan to St. Louis. 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 into for flights to St. Louis from San Juan?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to St. Louis from San Juan. Booking flights from San Juan to Lambert-St Louis (STL) should be relatively easy as there are 0 daily inbound flights from San Juan from 4 different airlines.

  • What are the cheapest airlines flying from San Juan to St. Louis round-trip?

    Our cheapest airline available from San Juan to St. Louis is Frontier. Our recent data shows that you can find tickets from as low as $134 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $266 and $344 round-trip. These flights start at 68% lower than the current average price 3 months from now.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $57. Users have also found prices from $117 and $127 on Spirit Airlines and American Airlines, respectively.

  • Can I find deals for flights from San Juan to St. Louis that include hotel bookings?

    Yes. In addition to deals on San Juan to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Juan to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Juan to St. Louis.

  • Can I find deals for business class flights from San Juan to St. Louis?

    Yes. Cheapflights offers flight deals from San Juan to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Juan to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from San Juan to St. Louis (average of $308). Flying from San Juan to St. Louis in March is currently the most expensive (average of $357). 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.

See more FAQs

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.

Alternative routes for San Juan to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Luis Munoz Marin Intl to St. Louis flights
Luis Munoz Marin Intl to Kansas City flights

Top 4 airlines flying from San Juan to St. Louis

Discover the top 4 airlines that operate flights from San Juan 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 2,659,078 searches. Data last updated November 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$163Average$290FlexibilityNo cancel feeOn-time62%
DeltaCheapest$244Average$373FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$280Average$554FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$286Average$453FlexibilityNo cancel feeOn-time71%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines