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$64+ Cheap flights from St. Louis (STL) to Puerto Rico

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
Nov 24 — Dec 11
Sun 11/24
Sun 12/1
1 adult, Economy
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Cheap flight deals from St. Louis to Puerto Rico

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Puerto Rico (PR0). 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.

Find flight deals from St. Louis to Puerto Rico

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

This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/85:02 pmSTL - SJU
1 stop7h 38mFrontier
Sun 12/159:49 pmSJU - STL
1 stop27h 44mFrontier
Deal found 11/19$274
This FareScan 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 FareScan is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/124:26 pmSTL - SJU
2 stops31h 14mSpirit Airlines
Mon 12/169:13 pmSJU - STL
1 stop20h 08mSpirit Airlines
Deal found 11/18$298
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.
Fri 12/66:46 pmSTL - SJU
2 stops53h 54mMultiple Airlines
Sun 12/1510:44 pmSJU - STL
1 stop11h 31mMultiple Airlines
Deal found 11/19$302
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/77:17 amSTL - SJU
2 stops12h 36mAmerican Airlines
Thu 12/124:40 pmSJU - STL
2 stops9h 19mAmerican Airlines
Deal found 11/18$379
This United 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/128:05 amSTL - SJU
1 stop10h 50mUnited Airlines
Sun 12/152:05 amSJU - STL
1 stop10h 54mUnited Airlines
Deal found 11/19$450
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.
Sat 12/141:15 pmSTL - SJU
2 stops9h 30mSouthwest
Tue 12/177:55 amSJU - STL
2 stops11h 20mSouthwest
Deal found 11/18$554
This United 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/28:25 amSTL - CPX
2 stops30h 26mUnited Airlines
Mon 12/910:13 amCPX - STL
2 stops28h 30mUnited Airlines
Deal found 11/19$2,121

Find flights from St. Louis to Puerto Rico within your budget

Customize your flight search to find flights from St. Louis to Puerto Rico 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.

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Route

Depart

Return

Price

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 2/5

9:36 am-12:04 am

2 stops12h 28m

San Juan Luis Munoz Marin Intl

Wed 2/12

7:45 am-10:17 pm

1 stop16h 32m

$264

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 2/10

5:05 pm-11:30 am

1 stop16h 25m

San Juan Luis Munoz Marin Intl

Sat 2/22

6:05 pm-7:07 am

2 stops15h 02m

$266

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sun 12/8

5:02 pm-2:40 am

1 stop7h 38m

San Juan Luis Munoz Marin Intl

Sun 12/15

9:49 pm-11:33 pm

1 stop27h 44m

$274

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 1/7

4:27 pm-8:22 pm

1 stop25h 55m

San Juan Luis Munoz Marin Intl

Wed 1/15

8:43 pm-2:43 pm

1 stop20h 00m

$299

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 1/11

12:41 pm-6:12 am

2 stops15h 31m

San Juan Luis Munoz Marin Intl

Tue 1/14

2:05 am-10:47 am

1 stop10h 42m

$344

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 1/1

6:04 am-3:37 pm

1 stop7h 33m

San Juan Luis Munoz Marin Intl

Thu 1/9

4:25 pm-11:14 pm

1 stop8h 49m

$529

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 3/8

5:25 am-2:35 pm

1 stop7h 10m

San Juan Luis Munoz Marin Intl

Sun 3/16

6:05 am-3:00 pm

2 stops9h 55m

$624

St. LouisCulebra

STL - CPX

STLCPX

Lambert-St Louis

Mon 12/2

8:25 am-4:51 pm

2 stops30h 26m

Culebra

Mon 12/9

10:13 am-12:43 pm

2 stops28h 30m

$2,121

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 1/20

5:05 pm-2:19 am

1 stop7h 14m

$64

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 1/29

7:18 am-9:59 pm

2 stops12h 41m

$132

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 15 results
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Best time to book a flight from St. Louis to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from St. Louis 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 St. Louis to Puerto Rico

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

What is the cheapest month to book a flight from St. Louis to Puerto Rico?

Currently, September is the cheapest month in which you can book a flight from St. Louis to Puerto Rico (average of $254). Flying from St. Louis to Puerto Rico in March is currently the most expensive (average of $335). 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 STL to PR?

Find hourly flight availability from St. Louis to Puerto Rico. 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.

When flying from St. Louis to Puerto Rico, 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 Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Puerto Rico 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 Puerto Rico when rainfall is around 2.2 in.

Temperature in Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Puerto Rico, 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).

Reviews of airlines servicing Puerto Rico

Get insights into the airlines that provide service to Puerto Rico. 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 Puerto Rico. Reviews last updated November 19, 2024.
Read through reviews of airlines operating flights from St. Louis to Puerto Rico, such as United Airlines, Southwest and Frontier. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,015 reviews

Crew

8.7

Food

7.2

Boarding

8.2

Comfort

8.1

Entertainment

7.7

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

Crew

8.7

Food

7.2

Boarding

8.2

Comfort

8.1

Entertainment

7.7

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

Crew

8.7

Food

7.2

Boarding

8.2

Comfort

8.1

Entertainment

7.7

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

Crew

8.7

Food

7.2

Boarding

8.2

Comfort

8.1

Entertainment

7.7

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

Crew

8.7

Food

7.2

Boarding

8.2

Comfort

8.1

Entertainment

7.7

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

Crew

8.7

Food

7.2

Boarding

8.2

Comfort

8.1

Entertainment

7.7

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 St. Louis to Puerto Rico. 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 from for flights from St. Louis to Puerto Rico?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Puerto Rico. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $64. Users have also found prices from $127 and $133 on Delta and American Airlines, respectively.

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

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

  • How can I find direct flights from St. Louis to Puerto Rico?

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

  • Can I find deals for business class flights from St. Louis to Puerto Rico?

    Yes. Cheapflights offers flight deals from St. Louis to Puerto Rico 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 St. Louis to Puerto Rico?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Puerto Rico (average of $254). Flying from St. Louis to Puerto Rico in March is currently the most expensive (average of $335). 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

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Alternative routes for St. Louis to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from St. Louis to Puerto Rico

Discover the top 6 airlines that operate flights from St. Louis to Puerto Rico. 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$144Average$310FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$164Average$312FlexibilityNo cancel feeOn-time65%
DeltaCheapest$262Average$470FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$264Average$546FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$301Average$498FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$374Average$552FlexibilityNo cancel feeOn-time63%
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