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$65+ 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — STL
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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Cheap flight deals from Puerto Rico to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Puerto Rico (PR0) 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 December 22, 2024.

Round-trip from

$134
(eDestinos)

One-way from

$65
(eDestinos)
From Puerto Rico to Lambert-St Louis
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One-way flight from Puerto Rico to Lambert-St Louis
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Find flight deals from Puerto Rico to St. Louis

Cheapest flights from Puerto Rico to St. Louis
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 December 22, 2024.

This Cheapflightsfares deal was found by Cheapflights users on 12/21. 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.
Thu 12/263:59 amSJU - STL
1 stop6h 48mFrontier
Mon 1/65:45 pmSTL - SJU
1 stop7h 04mFrontier
Deal found 12/21$290
This American Airlines deal was found by Cheapflights users on 12/21. 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 12/261:30 amSJU - STL
1 stop11h 15mAmerican Airlines
Mon 1/65:45 amSTL - SJU
2 stops9h 45mAmerican Airlines
Deal found 12/21$569
This eDestinos deal was found by Cheapflights users on 12/21. 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 12/279:00 pmSJU - STL
1 stop28h 28mMultiple Airlines
Thu 1/21:00 pmSTL - SJU
3 stops28h 55mMultiple Airlines
Deal found 12/21$632
This Southwest deal was found by Cheapflights users on 12/21. 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.
Fri 12/272:25 pmSJU - STL
2 stops9h 30mSouthwest
Sun 12/297:40 pmSTL - SJU
1 stop12h 45mSouthwest
Deal found 12/21$694
This United Airlines deal was found by Cheapflights users on 12/21. 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.
Fri 12/2710:15 amSJU - STL
2 stops13h 30mUnited Airlines
Mon 1/610:35 amSTL - SJU
2 stops12h 01mUnited Airlines
Deal found 12/21$784
This Alaska Airlines deal was found by Cheapflights users on 12/21. 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.
Thu 12/261:30 amSJU - STL
3 stops24h 29mAlaska Airlines
Thu 1/210:16 amSTL - SJU
3 stops26h 42mAlaska Airlines
Deal found 12/21$3,487

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

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 December 22, 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

Tue 1/28

8:30 pm-11:31 pm

2 stops29h 01m

Lambert-St Louis

Tue 2/4

3:48 pm-9:21 am

1 stop15h 33m

$225

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Fri 2/7

6:15 am-2:07 pm

2 stops9h 52m

Lambert-St Louis

Sun 2/9

2:00 pm-11:58 pm

1 stop7h 58m

$254

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 1/9

2:51 pm-11:27 pm

1 stop10h 36m

Lambert-St Louis

Wed 1/15

5:05 pm-8:40 pm

2 stops25h 35m

$308

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Wed 1/8

8:21 pm-2:43 pm

1 stop20h 22m

Lambert-St Louis

Sun 1/19

4:28 pm-9:21 am

1 stop14h 53m

$337

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Mon 1/27

2:05 am-3:38 pm

2 stops15h 33m

Lambert-St Louis

Tue 2/4

10:55 am-9:28 pm

1 stop8h 33m

$344

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Fri 1/10

4:15 pm-11:37 pm

1 stop9h 22m

Lambert-St Louis

Sun 1/19

10:59 am-11:46 pm

1 stop10h 47m

$459

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Fri 4/11

5:35 am-4:00 pm

2 stops11h 25m

Lambert-St Louis

Sun 4/20

5:25 pm-12:40 am

1 stop6h 15m

$534

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Wed 6/18

7:29 am-1:52 pm

2 stops31h 23m

Lambert-St Louis

Sat 7/5

7:30 pm-1:55 pm

2 stops17h 25m

$1,604

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 2/6

9:49 pm-11:31 pm

1 stop27h 42m

$65

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Sat 2/22

9:34 pm-2:42 pm

1 stop19h 08m

$115

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 16 results
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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.
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 Puerto Rico to St. Louis

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

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 December 22, 2024.

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 December 22, 2024.
Peruse reviews from past customers who have flown with Frontier, American Airlines 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.
Southwest
8.1
Very good
4,804 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,804 reviews
Southwest
8.1
Very good
4,804 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,537 reviews
Southwest
8.1
Very good
4,804 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,594 reviews
Southwest
8.1
Very good
4,804 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,028 reviews
Southwest
8.1
Very good
4,804 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,804 reviews

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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.

  • What airport do you fly into for flights to St. Louis from Puerto Rico?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from 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 Puerto Rico to St. Louis one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $65. Users have also found prices from $115 and $127 on Spirit Airlines and Delta, respectively.

  • What are the cheapest flights from Puerto Rico to St. Louis?

    The cheapest flight price from Puerto Rico to St. Louis is $204. On average you can expect to pay $262. The most popular route, (San Juan Luis Munoz Marin Intl - Lambert-St Louis), can usually be booked for $182.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Puerto Rico 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 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$163Average$264FlexibilityNo cancel feeOn-time62%
DeltaCheapest$244Average$366FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$279Average$554FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$280Average$554FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$297Average$434FlexibilityNo cancel feeOn-time71%
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