What are the cheapest airlines to fly from St. Louis to San Juan Luis Munoz Marin Intl Airport one-way?

$93 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $110 and $116, respectively.

What are the cheapest flights from St. Louis to San Juan Luis Munoz Marin Intl Airport?

Looking at all options, your cheapest flight can be booked for $566. While the most popular route (Lambert-St Louis - San Juan Luis Munoz Marin Intl) can be booked for $219 on average our data indicates $660 when flying from St. Louis to San Juan Luis Munoz Marin Intl Airport.

What are the most popular airlines that fly from St. Louis to San Juan Luis Munoz Marin Intl Airport?

Consider American Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying from St. Louis to San Juan Luis Munoz Marin Intl Airport.

Where are the most common layover locations when flying from St. Louis to San Juan Luis Munoz Marin Intl Airport?

Most of the time, St. Louis to San Juan Luis Munoz Marin Intl Airport flights that have layovers will stop in Charlotte. Orlando sees the second most layovers for non-direct flights flying from St. Louis to San Juan Luis Munoz Marin Intl Airport.

Where are the least popular layover locations for St. Louis to San Juan Luis Munoz Marin Intl Airport flights?

Of the flights from St. Louis to San Juan Luis Munoz Marin Intl Airport that have layovers, the fewest flights stop in Atlanta.

What are some popular things to do or see while on a layover in Charlotte?

Carowind, Mint Museum Uptown, and NASCAR Hall of Fame are the most popular attractions in Charlotte if you're in need of something to do during your layover. Carowind, Mint Museum Uptown, and NASCAR Hall of Fame can be accessed by traveling approximately 8.2 mi, 5.4 mi, and 5.7 mi, respectively from Charlotte Douglas. Travelers can book a car rental at Charlotte Douglas for about $47 per day to make their sightseeing more efficient.

What are some popular points of interest to see during a layover in Orlando?

Walt Disney World Resort, Universal Orlando Resort, and International Drive are currently the most popular points of interest in Orlando at the moment. Walt Disney World Resort, Universal Orlando Resort, and International Drive can be accessed by traveling approximately 16.2 mi, 10.2 mi, and 9.9 mi, respectively from Orlando. Those on a layover in Orlando in need of a rental car can book one at Orlando for about $24.

What is the cheapest day to fly round-trip from St. Louis to San Juan Luis Munoz Marin Intl Airport?

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 58% when planning your travel around this day of the week.

What is the cheapest month to fly from St. Louis to San Juan Luis Munoz Marin Intl Airport?

September is one of the best times of the year to fly to San Juan Luis Munoz Marin Intl Airport from St. Louis. Prices for September average $443 per person but you can even find prices for as low as $203. The most expensive prices can be found in the month of July. Opting for a September flight can save you 25% on your journey compared to booking in July

What airport do you fly from for flights from St. Louis to San Juan Luis Munoz Marin Intl?

Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to San Juan Luis Munoz Marin Intl. On average, Lambert-St Louis has 0 outbound flights to San Juan Luis Munoz Marin Intl per day from 6 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

Can I find deals for flights from St. Louis to Luis Munoz Marin Intl that include hotel bookings?

Yes. In addition to deals on St. Louis to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Luis Munoz Marin Intl?

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

Can I find deals for business class flights from St. Louis to Luis Munoz Marin Intl?

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

$93+ Flights from St. Louis to San Juan Luis Munoz Marin Intl Airport

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Find cheap flights from St. Louis to Luis Munoz Marin Intl 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

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Cheapflights Tip: The best prices from Lambert-St Louis to San Juan Luis Munoz Marin Intl are usually found in September or August, booked 71 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from St. Louis to Luis Munoz Marin Intl

Round-trip from	$212 (Priceline)
One-way from	$93 (Priceline)
Popular in	July
Cheapest in	September
Average price	$551
Good round-trip deal	$566 or less

From Lambert-St Louis to San Juan Luis Munoz Marin Intl

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One-way flight from Lambert-St Louis to San Juan Luis Munoz Marin Intl

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($42 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

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Average for round-trip flights in June 2025

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Price to beat on a round-trip flight from Lambert-St Louis to San Juan Luis Munoz Marin Intl.

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Find flight deals from St. Louis to Luis Munoz Marin Intl

Cheapest flights from St. Louis to Luis Munoz Marin Intl
Explore the most affordable flight options available from St. Louis to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

Tue 6/245:47 pmSTL - SJU

1 stop7h 48mFrontier

Sun 6/295:40 amSJU - STL

1 stop19h 13mFrontier

Deal found 6/17

$212

Wed 9/175:25 amSTL - SJU

1 stop7h 45mSouthwest

Fri 9/193:30 pmSJU - STL

2 stops8h 05mSouthwest

Deal found 6/16

$219

Fri 7/115:40 pmSTL - SJU

1 stop7h 59mMultiple Airlines

Sun 7/131:37 amSJU - STL

1 stop9h 15mMultiple Airlines

Deal found 6/17

$234

Sun 9/217:20 amSTL - SJU

1 stop7h 48mDelta

Sat 9/2712:55 pmSJU - STL

1 stop6h 07mDelta

Deal found 6/15

$259

Mon 6/3011:28 amSTL - SJU

1 stop6h 51mSpirit Airlines

Thu 7/37:36 pmSJU - STL

2 stops22h 28mSpirit Airlines

Deal found 6/16

$263

Mon 9/15:27 amSTL - SJU

1 stop16h 29mAmerican Airlines

Fri 9/54:42 pmSJU - STL

1 stop7h 25mAmerican Airlines

Deal found 6/16

$295

Tue 12/912:24 pmSTL - SJU

1 stop10h 12mUnited Airlines

Thu 12/112:05 amSJU - STL

2 stops14h 15mUnited Airlines

Deal found 6/17

$309

Best flights from St. Louis to Luis Munoz Marin Intl
Discover carefully curated flight deals from St. Louis to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2025.

Tue 6/245:47 pmSTL - SJU

1 stop7h 48mFrontier

Sun 6/295:40 amSJU - STL

1 stop19h 13mFrontier

Deal found 6/17

$212

Fri 7/115:40 pmSTL - SJU

1 stop7h 59mMultiple Airlines

Sun 7/131:37 amSJU - STL

1 stop9h 15mMultiple Airlines

Deal found 6/17

$234

Mon 6/3011:28 amSTL - SJU

1 stop6h 51mSpirit Airlines

Thu 7/37:36 pmSJU - STL

2 stops22h 28mSpirit Airlines

Deal found 6/16

$263

Mon 9/15:27 amSTL - SJU

1 stop16h 29mAmerican Airlines

Fri 9/54:42 pmSJU - STL

1 stop7h 25mAmerican Airlines

Deal found 6/16

$295

Sun 7/275:30 pmSTL - SJU

1 stop7h 10mSouthwest

Tue 7/295:30 amSJU - STL

2 stops8h 50mSouthwest

Deal found 6/17

$367

Mon 9/86:15 amSTL - SJU

1 stop8h 27mUnited Airlines

Wed 9/101:05 amSJU - STL

2 stops14h 14mUnited Airlines

Deal found 6/16

$385

Last-minute flights from St. Louis to Luis Munoz Marin Intl
Discover last-minute flight deals from St. Louis to Luis Munoz Marin Intl. Data last updated June 18, 2025 and is based on user searches.

Mon 6/2311:28 amSTL - SJU

1 stop6h 51mMultiple Airlines

Tue 7/13:40 amSJU - STL

1 stop21h 13mMultiple Airlines

Deal found 6/16

$294

Mon 6/235:30 amSTL - SJU

2 stops11h 35mAmerican Airlines

Wed 7/26:05 amSJU - STL

2 stops11h 10mAmerican Airlines

Deal found 6/16

$665

Mon 6/235:00 amSTL - SJU

1 stop8h 44mUnited Airlines

Tue 7/11:10 amSJU - STL

2 stops22h 35mUnited Airlines

Deal found 6/16

$705

Mon 6/2310:48 amSTL - SJU

1 stop11h 00mDelta

Wed 6/255:48 pmSJU - STL

1 stop6h 48mDelta

Deal found 6/16

$975

Tue 6/245:47 pmSTL - SJU

1 stop7h 48mFrontier

Sun 6/295:40 amSJU - STL

1 stop19h 13mFrontier

Deal found 6/17

$212

Tue 6/247:20 amSTL - SJU

2 stops7h 40mSouthwest

Sun 6/296:00 amSJU - STL

1 stop6h 25mSouthwest

Deal found 6/17

$615

Fri 6/276:36 pmSTL - SJU

2 stops23h 43mSpirit Airlines

Sun 6/292:36 amSJU - STL

2 stops16h 42mSpirit Airlines

Deal found 6/16

$420

Mon 6/3011:28 amSTL - SJU

1 stop6h 51mSpirit Airlines

Thu 7/37:36 pmSJU - STL

2 stops22h 28mSpirit Airlines

Deal found 6/16

$263

Fri 7/115:40 pmSTL - SJU

1 stop7h 59mMultiple Airlines

Sun 7/131:37 amSJU - STL

1 stop9h 15mMultiple Airlines

Deal found 6/17

$234

Thu 7/246:10 amSTL - SJU

1 stop15h 40mAmerican Airlines

Tue 7/293:45 pmSJU - STL

2 stops9h 06mAmerican Airlines

Deal found 6/16

$485

Sun 7/275:30 pmSTL - SJU

1 stop7h 10mSouthwest

Fri 8/111:25 amSJU - STL

1 stop10h 30mSouthwest

Deal found 6/17

$295

One-way flights from St. Louis to Luis Munoz Marin Intl
Search for one-way flight options from St. Louis to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated June 18, 2025.

Wed 7/165:40 pmSTL - SJU

1 stop7h 59mFrontier

Deal found 6/16

$93

Mon 9/87:00 amSTL - SJU

1 stop8h 36mDelta

Deal found 6/16

$110

Tue 9/166:00 pmSTL - SJU

2 stops19h 53mAmerican Airlines

Deal found 6/18

$116

Mon 8/1110:47 amSTL - SJU

2 stops26h 58mSpirit Airlines

Deal found 6/18

$133

Sat 9/69:17 amSTL - SJU

2 stops13h 40mUnited Airlines

Deal found 6/16

$144

Wed 9/106:25 amSTL - SJU

2 stops10h 00mSouthwest

Deal found 6/16

$199

Fri 8/152:27 pmSTL - SJU

2 stops23h 49mMultiple Airlines

Deal found 6/18

$273

Sat 8/169:09 amSTL - SJU

3 stops28h 51mAvianca

Deal found 6/16

$666

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 6/24

5:47 pm-2:35 am

1 stop7h 48m

San Juan Luis Munoz Marin Intl

Sun 6/29

5:40 am-11:53 pm

1 stop19h 13m

$212

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 7/11

5:40 pm-2:39 am

1 stop7h 59m

San Juan Luis Munoz Marin Intl

Sun 7/13

1:37 am-9:52 am

1 stop9h 15m

$234

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 6/30

11:28 am-7:19 pm

1 stop6h 51m

San Juan Luis Munoz Marin Intl

Thu 7/3

7:36 pm-5:04 pm

2 stops22h 28m

$263

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 9/1

5:27 am-10:56 pm

1 stop16h 29m

San Juan Luis Munoz Marin Intl

Fri 9/5

4:42 pm-11:07 pm

1 stop7h 25m

$295

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sun 7/27

5:30 pm-1:40 am

1 stop7h 10m

San Juan Luis Munoz Marin Intl

Tue 7/29

5:30 am-1:20 pm

2 stops8h 50m

$367

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 9/8

6:15 am-3:42 pm

1 stop8h 27m

San Juan Luis Munoz Marin Intl

Wed 9/10

1:05 am-2:19 pm

2 stops14h 14m

$385

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 7/16

5:40 pm-2:39 am

1 stop7h 59m

$93

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 9/8

7:00 am-4:36 pm

1 stop8h 36m

$110

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 9/16

6:00 pm-2:53 pm

2 stops19h 53m

$116

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 8/11

10:47 am-2:45 pm

2 stops26h 58m

$133

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 14 results

Best time to book a flight from St. Louis to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl 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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to San Juan Luis Munoz Marin Intl Airport

How far ahead should I book a flight from St. Louis to San Juan Luis Munoz Marin Intl Airport?

Booking 71 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to San Juan Luis Munoz Marin Intl Airport. 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 St. Louis to San Juan Luis Munoz Marin Intl Airport?

Currently, September is the cheapest month in which you can book a flight from St. Louis to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from St. Louis to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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 SJU?

When flying from St. Louis to San Juan Luis Munoz Marin Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 53% versus a flight at noon.

What is the cheapest day to fly from St. Louis to San Juan Luis Munoz Marin Intl Airport?

Travelers seeking maximum savings on their St. Louis to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Luis Munoz Marin Intl by month

In terms of precipitation, rainfall in San Juan Luis Munoz Marin Intl Airport 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 Luis Munoz Marin Intl Airport when rainfall is around 2.2 in.

Temperature in Luis Munoz Marin Intl by month

If weather is an important factor for your trip to San Juan Luis Munoz Marin Intl Airport, 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 Luis Munoz Marin Intl

To help decide which airline to fly from St. Louis to San Juan, see what other customers have to say about Southwest, Delta and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,280 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,280 reviews

Southwest

8.0

Very good

4,280 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Delta

8.0

Very good

7,964 reviews

Southwest

8.0

Very good

4,280 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

United Airlines

7.4

Good

8,810 reviews

Southwest

8.0

Very good

4,280 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,280 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Avianca

6.7

Okay

2,350 reviews

Southwest

8.0

Very good

4,280 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

What airport do you fly from for flights from St. Louis to San Juan Luis Munoz Marin Intl?
Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to San Juan Luis Munoz Marin Intl. On average, Lambert-St Louis has 0 outbound flights to San Juan Luis Munoz Marin Intl per day from 6 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.
What are the cheapest airlines flying from St. Louis to San Juan Luis Munoz Marin Intl Airport round-trip?
According to our current data, Frontier ($212), Spirit Airlines ($263), and American Airlines ($295) offers the cheapest pricing from St. Louis to San Juan Luis Munoz Marin Intl Airport. Frontier is 52% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from St. Louis to San Juan Luis Munoz Marin Intl Airport one-way?
$93 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $110 and $116, respectively.
What are the cheapest flights from St. Louis to San Juan Luis Munoz Marin Intl Airport?
Looking at all options, your cheapest flight can be booked for $566. While the most popular route (Lambert-St Louis - San Juan Luis Munoz Marin Intl) can be booked for $219 on average our data indicates $660 when flying from St. Louis to San Juan Luis Munoz Marin Intl Airport.
Where are the most common layover locations when flying from St. Louis to San Juan Luis Munoz Marin Intl Airport?
Most of the time, St. Louis to San Juan Luis Munoz Marin Intl Airport flights that have layovers will stop in Charlotte. Orlando sees the second most layovers for non-direct flights flying from St. Louis to San Juan Luis Munoz Marin Intl Airport.
What are some popular things to do or see while on a layover in Charlotte?
Carowind, Mint Museum Uptown, and NASCAR Hall of Fame are the most popular attractions in Charlotte if you're in need of something to do during your layover. Carowind, Mint Museum Uptown, and NASCAR Hall of Fame can be accessed by traveling approximately 8.2 mi, 5.4 mi, and 5.7 mi, respectively from Charlotte Douglas. Travelers can book a car rental at Charlotte Douglas for about $47 per day to make their sightseeing more efficient.
What are some popular points of interest to see during a layover in Orlando?
Walt Disney World Resort, Universal Orlando Resort, and International Drive are currently the most popular points of interest in Orlando at the moment. Walt Disney World Resort, Universal Orlando Resort, and International Drive can be accessed by traveling approximately 16.2 mi, 10.2 mi, and 9.9 mi, respectively from Orlando. Those on a layover in Orlando in need of a rental car can book one at Orlando for about $24.
Where are the least popular layover locations for St. Louis to San Juan Luis Munoz Marin Intl Airport flights?
Of the flights from St. Louis to San Juan Luis Munoz Marin Intl Airport that have layovers, the fewest flights stop in Atlanta.
Can I find deals for flights from St. Louis to Luis Munoz Marin Intl that include hotel bookings?
Yes. In addition to deals on St. Louis to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Luis Munoz Marin Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Luis Munoz Marin Intl.
Can I find deals for business class flights from St. Louis to Luis Munoz Marin Intl?
Yes. Cheapflights offers flight deals from St. Louis to Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport?
Currently, September is the cheapest month in which you can book a flight from St. Louis to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from St. Louis to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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.

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Top 6 airlines flying from St. Louis to Luis Munoz Marin Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$140	Average$248	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$155	Average$319	FlexibilityNo cancel fee	On-time65%
United Airlines	Cheapest$219	Average$387	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$244	Average$398	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$254	Average$499	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$356	Average$598	FlexibilityNo cancel fee	On-time63%

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$93+ Cheap flights from St. Louis (STL) to Luis Munoz Marin Intl (SJU)

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 7/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to San Juan Luis Munoz Marin Intl are usually found in September or August, booked 71 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from St. Louis to Luis Munoz Marin Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Find flight deals from St. Louis to Luis Munoz Marin Intl

Cheapest flights from St. Louis to Luis Munoz Marin IntlExplore the most affordable flight options available from St. Louis to Luis Munoz Marin Intl. 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 St. Louis to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to San Juan Luis Munoz Marin Intl Airport that are best for you.

Best time to book a flight from St. Louis to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to San Juan Luis Munoz Marin Intl Airport

How far ahead should I book a flight from St. Louis to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Luis Munoz Marin Intl. Price data was last updated on June 13, 2025.

What is the cheapest month to book a flight from St. Louis to San Juan Luis Munoz Marin Intl Airport?

What is the cheapest time of day to fly from STL to SJU?

Find hourly flight availability from St. Louis to Luis Munoz Marin Intl. 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.

What is the cheapest day to fly from St. Louis to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Luis Munoz Marin Intl. Price data was last updated on December 16, 2024.

Rainfall in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average rainfall totals by month.

Temperature in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Luis Munoz Marin Intl

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Luis Munoz Marin Intl. 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 San Juan Luis Munoz Marin Intl?

What are the cheapest airlines flying from St. Louis to San Juan Luis Munoz Marin Intl Airport round-trip?

What are the cheapest airlines to fly from St. Louis to San Juan Luis Munoz Marin Intl Airport one-way?

What are the cheapest flights from St. Louis to San Juan Luis Munoz Marin Intl Airport?

Where are the most common layover locations when flying from St. Louis to San Juan Luis Munoz Marin Intl Airport?

What are some popular things to do or see while on a layover in Charlotte?

What are some popular points of interest to see during a layover in Orlando?

Where are the least popular layover locations for St. Louis to San Juan Luis Munoz Marin Intl Airport flights?

Can I find deals for flights from St. Louis to Luis Munoz Marin Intl that include hotel bookings?

How can I find direct flights from St. Louis to Luis Munoz Marin Intl?

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Cheapest flights from St. Louis to Luis Munoz Marin Intl
Explore the most affordable flight options available from St. Louis to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.