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Cheap flights from St. Louis (STL) to San Juan from $84

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 8/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — SJU
Jun 11 — Jun 181
From?
To?
Tue 6/11
Tue 6/18
1 adult, Economy
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The best prices from Lambert-St Louis to San Juan are usually found in September or April, booked 90 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from St. Louis to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to San Juan (PR1). 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 June 6, 2024.

Popular in

December

Cheapest in

September

Round-trip from

$245

One-way from

$154
High demand for flights, 22% potential price rise
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Best time to find cheap flights, 25% potential price drop
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From Lambert-St Louis to San Juan
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One-way flight from Lambert-St Louis to San Juan
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What is the cheapest day to fly round-trip from St. Louis to San Juan?

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 21% when planning your travel around this day of the week.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 16 days in advance, which can save you up to 15% on flights from St. Louis to San Juan compared to booking the week you need them. Waiting 16 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $311. For sooner than that we have options available in the next 3 days from $315.

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

September is one of the best times of the year to fly to San Juan from St. Louis. Prices for September average $457 per person but you can even find prices for as low as $168. The most expensive prices can be found in the month of December. Opting for a September flight can save you 28% on your journey compared to booking in December

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

When flying from St. Louis to San Juan, 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 37% versus a flight in the morning.

Cheap St. Louis to San Juan flights in June & July 2024

Find cheap flight options from St. Louis to San Juan specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,009,960 searches. Prices were last updated on June 6, 2024.
These are some of the most attractive deals on flights from St. Louis to San Juan in 2024. Check back soon for alternative fares.
Tue 6/1811:57 amSTL - SJU
2 stops22h 44mSpirit Airlines
Mon 6/248:06 pmSJU - STL
2 stops15h 51mSpirit Airlines
Deal found 6/5$228
Tue 6/1811:57 amSTL - SJU
1 stop12h 12mSpirit Airlines
Mon 6/248:06 pmSJU - STL
2 stops15h 51mSpirit Airlines
Deal found 6/5$245
Sat 7/136:19 pmSTL - SJU
1 stop16h 25mSpirit Airlines
Fri 7/198:54 pmSJU - STL
1 stop21h 35mSpirit Airlines
Deal found 6/4$251
Tue 6/1811:57 amSTL - SJU
2 stops22h 44mMultiple Airlines
Sat 6/225:57 pmSJU - STL
1 stop14h 10mMultiple Airlines
Deal found 6/5$261
Tue 6/1811:57 amSTL - SJU
2 stops22h 44mSpirit Airlines
Sat 6/228:06 pmSJU - STL
2 stops22h 59mSpirit Airlines
Deal found 6/5$262
Tue 6/1811:57 amSTL - SJU
1 stop12h 12mSpirit Airlines
Mon 6/2411:59 pmSJU - STL
1 stop11h 58mSpirit Airlines
Deal found 6/5$268
Mon 6/172:18 pmSTL - SJU
1 stop14h 25mMultiple Airlines
Mon 6/248:06 pmSJU - STL
2 stops15h 51mMultiple Airlines
Deal found 6/5$270
Tue 6/1811:57 amSTL - SJU
3 stops30h 08mSpirit Airlines
Mon 6/248:06 pmSJU - STL
2 stops15h 51mSpirit Airlines
Deal found 6/5$271
Tue 6/1811:57 amSTL - SJU
2 stops22h 44mMultiple Airlines
Fri 6/213:08 amSJU - STL
1 stop28h 59mMultiple Airlines
Deal found 6/5$275

St. Louis to San Juan 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and San Juan in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,009,960 searches. Data last updated June 6, 2024.
These are some of the most attractive deals on flights from St. Louis to San Juan in 2024. Check back soon for alternative fares.
Tue 9/1010:34 amSTL - SJU
2 stops14h 56mSpirit Airlines
Wed 9/111:32 pmSJU - STL
2 stops28h 58mSpirit Airlines
Deal found 6/4$157
Tue 9/1010:34 amSTL - SJU
1 stop7h 20mSpirit Airlines
Wed 9/111:32 pmSJU - STL
2 stops28h 58mSpirit Airlines
Deal found 6/4$159
Tue 9/107:57 amSTL - SJU
1 stop15h 55mSpirit Airlines
Wed 9/117:39 pmSJU - STL
1 stop21h 41mSpirit Airlines
Deal found 6/5$163
Tue 8/278:10 amSTL - SJU
1 stop16h 58mSpirit Airlines
Tue 9/31:45 amSJU - STL
1 stop6h 22mSpirit Airlines
Deal found 6/5$175
Sun 9/156:24 pmSTL - SJU
1 stop16h 04mSpirit Airlines
Wed 9/181:45 amSJU - STL
1 stop6h 22mSpirit Airlines
Deal found 6/5$177
Wed 8/147:57 amSTL - SJU
1 stop15h 55mSpirit Airlines
Wed 8/217:54 pmSJU - STL
1 stop21h 26mSpirit Airlines
Deal found 6/4$179
Mon 9/164:31 pmSTL - SJU
1 stop7h 07mSpirit Airlines
Mon 9/231:45 amSJU - STL
1 stop6h 22mSpirit Airlines
Deal found 6/5$186
Mon 9/164:31 pmSTL - SJU
1 stop7h 07mSpirit Airlines
Wed 9/181:45 amSJU - STL
1 stop6h 22mSpirit Airlines
Deal found 6/5$189
Wed 8/148:10 amSTL - SJU
1 stop16h 58mSpirit Airlines
Tue 8/201:52 amSJU - STL
1 stop6h 15mSpirit Airlines
Deal found 6/4$192

St. Louis to San Juan flights leaving soon

Find last-minute flight options from St. Louis to San Juan for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,009,960 searches. Data last updated June 6, 2024.
Book one of these great deals on flights from St. Louis to San Juan. Users should be sure to double check the price, date, and time of their last-minute flight.
Wed 6/128:16 amSTL - SJU
1 stop11h 47mFrontier
Wed 6/1910:15 pmSJU - STL
1 stop9h 52mFrontier
Deal found 6/5$322
Sat 6/156:22 pmSTL - SJU
1 stop16h 08mMultiple Airlines
Wed 6/195:52 pmSJU - STL
1 stop14h 15mMultiple Airlines
Deal found 6/5$323
Sat 6/156:22 pmSTL - SJU
1 stop16h 08mMultiple Airlines
Tue 6/183:08 amSJU - STL
1 stop28h 59mMultiple Airlines
Deal found 6/5$329
Wed 6/128:16 amSTL - SJU
1 stop11h 47mFrontier
Tue 6/183:08 amSJU - STL
1 stop28h 59mFrontier
Deal found 6/5$338
Sat 6/1511:34 amSTL - SJU
1 stop13h 30mMultiple Airlines
Wed 6/193:57 pmSJU - STL
2 stops23h 35mMultiple Airlines
Deal found 6/5$341
Sun 6/166:55 pmSTL - SJU
1 stop6h 43mSpirit Airlines
Sun 6/234:50 amSJU - STL
1 stop14h 15mSpirit Airlines
Deal found 6/5$343
Sun 6/165:22 pmSTL - SJU
1 stop17h 08mMultiple Airlines
Fri 6/218:10 pmSJU - STL
1 stop16h 03mMultiple Airlines
Deal found 6/5$345
Wed 6/128:16 amSTL - SJU
1 stop16h 43mFrontier
Wed 6/193:57 pmSJU - STL
2 stops23h 35mFrontier
Deal found 6/5$359
Sun 6/165:22 pmSTL - SJU
1 stop17h 08mSpirit Airlines
Fri 6/2112:30 pmSJU - STL
3 stops29h 58mSpirit Airlines
Deal found 6/5$368

One-way flights to San Juan from St. Louis

Search for one-way flight options from St. Louis to San Juan. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,009,960 searches. Data last updated June 6, 2024.
If you're seeking multiple options on one-way flights from St. Louis to San Juan, be sure to check out these deals, which are updated often. Those needing a return flight from St. Louis to San Juan can use the search form above.
Tue 8/208:10 amSTL - SJU
1 stop16h 58mSpirit Airlines
Deal found 6/6$84
Tue 8/208:10 amSTL - SJU
1 stop16h 58mSpirit Airlines
Deal found 6/5$94
Mon 8/198:10 amSTL - SJU
1 stop16h 58mSpirit Airlines
Deal found 6/6$100
Mon 8/198:10 amSTL - SJU
1 stop16h 58mSpirit Airlines
Deal found 6/5$109
Tue 7/3010:11 amSTL - SJU
1 stop8h 04mSpirit Airlines
Deal found 6/5$112
Tue 8/208:10 amSTL - SJU
2 stops27h 53mSpirit Airlines
Deal found 6/5$133
Tue 8/208:10 amSTL - SJU
3 stops39h 02mSpirit Airlines
Deal found 6/5$137
Mon 8/198:10 amSTL - SJU
2 stops26h 41mSpirit Airlines
Deal found 6/6$154
Thu 8/296:42 pmSTL - SJU
1 stop15h 23mFrontier
Deal found 6/5$156

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

Customize your flight search to find flights from St. Louis to San Juan 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 3,009,960 searches. Data last updated June 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$157 - $314

Route

Depart

Return

Price

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Tue 9/10

2 stops14h 56m

San Juan Luis Munoz Marin Intl

Wed 9/11

2 stops28h 58m

$157

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Tue 9/10

1 stop7h 20m

San Juan Luis Munoz Marin Intl

Wed 9/11

2 stops28h 58m

$159

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Tue 9/10

1 stop15h 55m

San Juan Luis Munoz Marin Intl

Wed 9/11

1 stop21h 41m

$163

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Tue 8/27

1 stop16h 58m

San Juan Luis Munoz Marin Intl

Tue 9/3

1 stop6h 22m

$175

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Sun 9/15

1 stop16h 04m

San Juan Luis Munoz Marin Intl

Wed 9/18

1 stop6h 22m

$177

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Tue 8/20

1 stop16h 58m

San Juan Luis Munoz Marin Intl

Sat 8/24

1 stop25h 02m

$240

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Thu 8/8

2 stops17h 10m

San Juan Luis Munoz Marin Intl

Sat 8/10

1 stop6h 28m

$268

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Tue 9/10

2 stops10h 33m

San Juan Luis Munoz Marin Intl

Wed 9/11

2 stops12h 20m

$308

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Tue 8/27

1 stop8h 24m

San Juan Luis Munoz Marin Intl

Thu 8/29

1 stop8h 14m

$314

Flights are sorted by cheapest first

Deals found on 6/4

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to San Juan. Price data was last updated on May 31, 2024.
The price you pay for your flight from St. Louis to San Juan may vary depending on when you book. For the best chance of a lower fare, look to book 90 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to San Juan. Price data was last updated on June 2, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to San Juan flight should consider departing on Friday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

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

Have a flexible travel schedule? Discover the best time to fly to San Juan 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.

Temperature and rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average temperature and rainfall totals by month.

SJU

Temperature

77 - 82.4 °F

If weather is an important factor for your trip to San Juan, 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 San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated June 6, 2024.
See what other customers who have flown with Spirit Airlines, Frontier and American Airlines from St. Louis to San Juan have to say. 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
8.2
Very good
5,917 reviews

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.2
Very good
5,917 reviews
Southwest
8.2
Very good
5,917 reviews

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Delta
8.0
Very good
10,371 reviews
Southwest
8.2
Very good
5,917 reviews

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

American Airlines
7.3
Good
14,229 reviews
Southwest
8.2
Very good
5,917 reviews

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Spirit Airlines
6.4
Okay
8,568 reviews
Southwest
8.2
Very good
5,917 reviews

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Frontier
6.2
Okay
3,982 reviews
Southwest
8.2
Very good
5,917 reviews

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Related info for your journey

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

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

  • Can I find flights from St. Louis to San Juan for under $200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to San Juan for under $200. The cheapest flight booked recently is on Spirit Airlines for just $157, but on average you can expect to pay $192.

  • Are there last-minute flights available from St. Louis to San Juan for under $400?

    There are currently 20+ open flights from St. Louis to San Juan within the next 7 days for less than $400.

  • What is the cheapest airline to fly from St. Louis to San Juan round-trip?

    Our cheapest airline available from St. Louis to San Juan is Spirit Airlines. Our recent data shows that you can find tickets from as low as $157 on this airline. Spirit Airlines is 65% 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 one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $84. Frontier flights start at $156 while deals on Southwest start at $186 one-way.

  • What does STL to SJU mean?

    Great question - STL to SJU just means Lambert-St Louis Airport to San Juan Luis Munoz Marin Intl Airport. Now you’ll know what these unique codes when you look for flights! Ponce Mercedita Airport (PSE), San Juan Isla Grande Airport (SIG), Culebra Airport (CPX), Vieques Airport (VQS), Ceiba J. Aponte de la Torre Airport (NRR) are some additional IATA codes for airports related to your trip.

  • Where are the most common layover locations when flying from St. Louis to San Juan?

    St. Louis to San Juan flights have a layover in Charlotte most often. Orlando sees the next most layovers on St. Louis to San Juan flights.

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

    The majority of Charlotte visitors spend their time at Carowind, North Carolina Blumenthal Performing Arts Center, and NASCAR Hall of Fame. Carowind, North Carolina Blumenthal Performing Arts Center, and NASCAR Hall of Fame are located about 8.2 mi, 5.8 mi, and 5.7 mi, respectively from Charlotte Douglas. Travelers in need of a car in Charlotte can rent one for about $52 per day.

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

    Orlando travelers tend to visit Walt Disney World Resort, Universal Orlando Resort, and International Drive more than any other notable places. Walt Disney World Resort, Universal Orlando Resort, and International Drive are located about 16.2 mi, 10.3 mi, and 9.9 mi, respectively from Orlando. Travelers can book a car rental at Orlando for about $30 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for St. Louis to San Juan flights?

    Flights departing from St. Louis and landing in San Juan layover in Atlanta least frequently.

  • Can I find deals for flights from St. Louis to San Juan that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to San Juan flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to San Juan with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to San Juan flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

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

  • Can I find deals for flights from St. Louis to San Juan that allow pets onboard?

    Many airlines flying from St. Louis to San Juan offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to San Juan?

    Yes, you can often find last-minute deals on St. Louis to San Juan flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to San Juan flight deals updated?

    The St. Louis to San Juan flight deals you see on this page were last updated on 6/5.

  • What are the most popular airlines that fly from St. Louis to San Juan?

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

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

    Currently, September is the cheapest month in which you can book a flight from St. Louis to San Juan (average of $245). Flying from St. Louis to San Juan in March is currently the most expensive (average of $338). 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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Alternative routes for St. Louis to San Juan
See prices for flight routes from nearby airports that may be better suited for you.

St. Louis to Luis Munoz Marin Intl flights
Kansas City to Luis Munoz Marin Intl flights
Springfield to Luis Munoz Marin Intl flights
St. Louis to Culebra flights
Kansas City to Aguadilla flights

Top 6 airlines flying from St. Louis to San Juan

Discover the top 6 airlines that operate flights from St. Louis to San Juan. 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 3,009,960 searches. Data last updated June 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$142Average$300FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$154Average$312FlexibilityNo cancel feeOn-time65%
DeltaCheapest$271Average$456FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$280Average$509FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$280Average$648FlexibilityNo cancel feeOn-time69%
Linear Air TaxiCheapest$11,685Average$87,598FlexibilityNo cancel feeOn-timeN/A
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Search flights from St. Louis to San Juan by cabin class

Find flights from St. Louis to San Juan, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Weekly flight availability from St. Louis to San Juan

Explore weekly flight availability from St. Louis to San Juan. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 6, 2024.
Sunday0daily flights
Monday0daily flights
Tuesday0daily flights
Wednesday0daily flights
Thursday0daily flights
Friday0daily flights
Saturday2daily flights

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to San Juan?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Juan from St. Louis today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from St. Louis to San Juan?

Cheapflights simply makes it quick and affordable to book flights from St. Louis to San Juan by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from St. Louis to San Juan with no change fees?

Yes! Cheapflights helps users easily find flights from St. Louis to San Juan with no change fees.

Can Cheapflights notify me if prices for flights from St. Louis to San Juan become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Juan from St. Louis today and book when prices fit your budget.

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