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Cheap flights from St. Louis (STL) to San Juan from $73

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 2 — Jun 91
From?
To?
Sun 6/2
Sun 6/9
1 adult, Economy
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The best prices from Lambert-St Louis to San Juan are usually found in April or September, 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 May 28, 2024.

Popular in

December

Cheapest in

April

Round-trip from

$248

One-way from

$157
High demand for flights, 22% potential price rise
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Best time to find cheap flights, 25% potential price drop
Search Deals
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 $312.

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

April is one of the best times of the year to fly to San Juan from St. Louis. Prices for April average $457 per person but you can even find prices for as low as $196. The most expensive prices can be found in the month of December. Opting for a April flight can save you 28% on your journey compared to booking in December

When is the cheapest time to fly from St. Louis to San Juan (STL - 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 Frontier flights from St. Louis to San Juan

Explore cheap flight options specifically provided by Frontier for the route between St. Louis and San Juan. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,740,132 searches. Data last updated May 28, 2024.
Find some of the cheapest Frontier flights traveling from St. Louis to San Juan. Come back soon if you're not finding the exact deal you're looking for.
Sat 8/38:00 pmSTL - SJU
2 stops17h 53mFrontier
Thu 8/84:11 pmSJU - STL
2 stops18h 14mFrontier
Deal found 5/27$280
Tue 6/47:44 pmSTL - SJU
1 stop11h 38mFrontier
Wed 6/58:05 pmSJU - STL
1 stop12h 02mFrontier
Deal found 5/28$281
Sat 6/83:08 pmSTL - SJU
1 stop11h 28mFrontier
Sat 6/1510:15 pmSJU - STL
1 stop9h 52mFrontier
Deal found 5/27$286
Mon 7/227:33 pmSTL - SJU
1 stop12h 08mFrontier
Thu 7/254:11 pmSJU - STL
2 stops18h 14mFrontier
Deal found 5/27$290
Tue 6/47:44 pmSTL - SJU
1 stop13h 59mFrontier
Wed 6/58:05 pmSJU - STL
1 stop12h 02mFrontier
Deal found 5/27$291
Sat 6/83:08 pmSTL - SJU
1 stop11h 28mFrontier
Fri 6/143:08 amSJU - STL
1 stop28h 59mFrontier
Deal found 5/27$297
Tue 6/47:44 pmSTL - SJU
1 stop13h 59mFrontier
Wed 6/53:57 pmSJU - STL
2 stops23h 35mFrontier
Deal found 5/27$303
Mon 6/176:16 pmSTL - SJU
1 stop13h 06mFrontier
Thu 6/204:07 pmSJU - STL
2 stops18h 33mFrontier
Deal found 5/28$304
Wed 7/247:33 pmSTL - SJU
1 stop26h 56mFrontier
Sat 7/274:31 pmSJU - STL
2 stops20h 37mFrontier
Deal found 5/27$309

Cheap United Airlines flights from St. Louis to San Juan

Explore cheap flight options specifically provided by United Airlines for the route between St. Louis and San Juan. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,740,132 searches. Data last updated May 28, 2024.
Take a gander at the lowest prices we've found on United Airlines flights from St. Louis to San Juan. Deals are refreshing constantly so come back soon for more options.
Wed 6/266:15 amSTL - SJU
1 stop8h 27mUnited Airlines
Tue 7/21:05 amSJU - STL
2 stops15h 35mUnited Airlines
Deal found 5/27$602
Wed 6/56:15 amSTL - SJU
1 stop8h 27mUnited Airlines
Fri 6/71:05 amSJU - STL
2 stops14h 11mUnited Airlines
Deal found 5/27$741
Tue 6/411:15 amSTL - SJU
1 stop8h 23mUnited Airlines
Tue 6/41:05 amSJU - STL
2 stops14h 09mUnited Airlines
Deal found 5/28$753

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

Find cheap flight options from St. Louis to San Juan specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,740,132 searches. Prices were last updated on May 28, 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.
Sun 6/235:22 pmSTL - SJU
1 stop17h 08mSpirit Airlines
Sat 6/298:06 pmSJU - STL
1 stop21h 26mSpirit Airlines
Deal found 5/27$257
Tue 6/253:23 pmSTL - SJU
1 stop19h 18mSpirit Airlines
Sat 6/298:06 pmSJU - STL
1 stop21h 26mSpirit Airlines
Deal found 5/27$272
Tue 6/47:44 pmSTL - SJU
1 stop11h 38mFrontier
Wed 6/58:05 pmSJU - STL
1 stop12h 02mFrontier
Deal found 5/28$281
Sat 6/83:08 pmSTL - SJU
1 stop11h 28mFrontier
Sat 6/1510:15 pmSJU - STL
1 stop9h 52mFrontier
Deal found 5/27$286
Tue 6/47:44 pmSTL - SJU
1 stop13h 59mFrontier
Wed 6/58:05 pmSJU - STL
1 stop12h 02mFrontier
Deal found 5/27$291
Tue 6/47:44 pmSTL - SJU
1 stop11h 38mMultiple Airlines
Mon 6/1011:59 pmSJU - STL
1 stop11h 58mMultiple Airlines
Deal found 5/27$295
Sat 6/83:08 pmSTL - SJU
1 stop11h 28mFrontier
Fri 6/143:08 amSJU - STL
1 stop28h 59mFrontier
Deal found 5/27$297
Tue 6/47:44 pmSTL - SJU
1 stop13h 59mFrontier
Wed 6/53:57 pmSJU - STL
2 stops23h 35mFrontier
Deal found 5/27$303
Mon 6/176:16 pmSTL - SJU
1 stop13h 06mFrontier
Thu 6/204:07 pmSJU - STL
2 stops18h 33mFrontier
Deal found 5/28$304

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 2,740,132 searches. Data last updated May 28, 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 8/2710:34 amSTL - SJU
1 stop7h 37mSpirit Airlines
Wed 9/47:57 pmSJU - STL
1 stop22h 33mSpirit Airlines
Deal found 5/27$138
Tue 8/2710:34 amSTL - SJU
1 stop7h 37mSpirit Airlines
Wed 9/47:57 pmSJU - STL
2 stops23h 32mSpirit Airlines
Deal found 5/27$147
Tue 8/272:35 pmSTL - SJU
2 stops19h 53mSpirit Airlines
Wed 9/47:57 pmSJU - STL
2 stops23h 32mSpirit Airlines
Deal found 5/27$165
Tue 8/2710:34 amSTL - SJU
1 stop7h 37mSpirit Airlines
Tue 9/31:00 amSJU - STL
1 stop22h 14mSpirit Airlines
Deal found 5/27$183
Tue 8/2710:34 amSTL - SJU
1 stop7h 37mMultiple Airlines
Sat 8/318:09 pmSJU - STL
1 stop11h 53mMultiple Airlines
Deal found 5/27$195
Sun 9/17:48 pmSTL - SJU
1 stop6h 00mSpirit Airlines
Sat 9/77:57 pmSJU - STL
1 stop22h 33mSpirit Airlines
Deal found 5/27$229
Sat 9/711:39 amSTL - SJU
1 stop12h 53mSpirit Airlines
Thu 9/125:00 amSJU - STL
1 stop14h 29mSpirit Airlines
Deal found 5/27$230
Tue 8/610:11 amSTL - SJU
1 stop8h 04mSpirit Airlines
Mon 8/123:33 amSJU - STL
1 stop7h 51mSpirit Airlines
Deal found 5/28$231
Wed 9/44:31 pmSTL - SJU
1 stop8h 20mSpirit Airlines
Fri 9/62:40 amSJU - STL
1 stop8h 48mSpirit Airlines
Deal found 5/27$236

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 2,740,132 searches. Data last updated May 28, 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.
Tue 6/47:44 pmSTL - SJU
1 stop11h 38mFrontier
Wed 6/58:05 pmSJU - STL
1 stop12h 02mFrontier
Deal found 5/28$281
Tue 6/47:44 pmSTL - SJU
1 stop13h 59mFrontier
Wed 6/58:05 pmSJU - STL
1 stop12h 02mFrontier
Deal found 5/27$291
Tue 6/47:44 pmSTL - SJU
1 stop11h 38mMultiple Airlines
Mon 6/1011:59 pmSJU - STL
1 stop11h 58mMultiple Airlines
Deal found 5/27$295
Tue 6/47:44 pmSTL - SJU
1 stop13h 59mFrontier
Wed 6/53:57 pmSJU - STL
2 stops23h 35mFrontier
Deal found 5/27$303
Tue 6/42:35 pmSTL - SJU
1 stop6h 49mMultiple Airlines
Tue 6/43:08 amSJU - STL
1 stop28h 59mMultiple Airlines
Deal found 5/27$333
Wed 6/58:13 amSTL - SJU
1 stop16h 46mFrontier
Sat 6/84:27 pmSJU - STL
2 stops23h 10mFrontier
Deal found 5/27$336
Tue 6/42:35 pmSTL - SJU
1 stop6h 49mMultiple Airlines
Mon 6/104:27 pmSJU - STL
2 stops23h 20mMultiple Airlines
Deal found 5/27$344
Tue 6/42:35 pmSTL - SJU
1 stop6h 49mMultiple Airlines
Tue 6/43:08 amSJU - STL
1 stop28h 59mMultiple Airlines
Deal found 5/28$348
Sun 6/26:19 pmSTL - SJU
1 stop16h 13mSpirit Airlines
Sat 6/82:40 amSJU - STL
1 stop16h 25mSpirit Airlines
Deal found 5/26$367

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 2,740,132 searches. Data last updated May 28, 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 8/2010:34 amSTL - SJU
1 stop7h 37mSpirit Airlines
Deal found 5/27$73
Tue 8/202:35 pmSTL - SJU
2 stops19h 53mSpirit Airlines
Deal found 5/27$90
Wed 8/214:31 pmSTL - SJU
1 stop9h 18mSpirit Airlines
Deal found 5/28$110
Tue 8/202:35 pmSTL - SJU
3 stops28h 13mSpirit Airlines
Deal found 5/28$118
Sat 6/226:22 pmSTL - SJU
1 stop16h 08mSpirit Airlines
Deal found 5/27$122
Mon 8/194:31 pmSTL - SJU
2 stops25h 40mSpirit Airlines
Deal found 5/27$133
Mon 8/199:20 pmSTL - SJU
1 stop12h 45mFrontier
Deal found 5/27$135
Mon 6/37:18 amSTL - SJU
1 stop15h 46mFrontier
Deal found 5/27$137
Mon 8/195:00 pmSTL - SJU
3 stops25h 11mMultiple Airlines
Deal found 5/28$138

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 2,740,132 searches. Data last updated May 28, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$257 - $602

Route

Depart

Return

Price

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Sun 6/23

1 stop17h 08m

San Juan Luis Munoz Marin Intl

Sat 6/29

1 stop21h 26m

$257

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Wed 8/7

1 stop29h 31m

San Juan Luis Munoz Marin Intl

Wed 8/14

1 stop7h 21m

$267

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Sat 7/6

1 stop16h 08m

San Juan Luis Munoz Marin Intl

Fri 7/12

1 stop22h 35m

$269

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Tue 6/25

1 stop19h 18m

San Juan Luis Munoz Marin Intl

Sat 6/29

1 stop21h 26m

$272

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Sat 8/3

2 stops17h 53m

San Juan Luis Munoz Marin Intl

Thu 8/8

2 stops18h 14m

$280

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Wed 7/10

1 stop26h 56m

San Juan Luis Munoz Marin Intl

Mon 7/15

1 stop15h 08m

$285

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Sat 6/8

1 stop11h 28m

San Juan Luis Munoz Marin Intl

Sat 6/15

1 stop9h 52m

$286

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Wed 8/14

2 stops8h 45m

San Juan Luis Munoz Marin Intl

Sun 8/18

1 stop17h 21m

$396

Lambert-St LouisSan Juan Luis Munoz Marin Intl

STL - SJU

STLSJU

Lambert-St Louis

Wed 6/26

1 stop8h 27m

San Juan Luis Munoz Marin Intl

Tue 7/2

2 stops15h 35m

$602

Flights are sorted by cheapest first

Deals found on 5/27

When is the best time to 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 24, 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

When is the cheapest time 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 May 26, 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

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 May 28, 2024.
See what other customers who have flown with Frontier, United Airlines 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.
United Airlines
7.4
Good
10,799 reviews
Check prices

Overall

7.4

Food

6.7

Entertainment

7.1

Boarding

7.7

Comfort

7.2

Crew

8.1

Reviews

1 / 10

For a first class fair this was the worse ever. 1. Long delay departing. 2. Long time landing. 3. Late getting car hire. 4. No compensation whatsoever. Do I need to say more. You check it out yourself.

United Airlines
7.4
Good
10,799 reviews
United Airlines
7.4
Good
10,799 reviews
Check prices

Overall

7.4

Food

6.7

Entertainment

7.1

Boarding

7.7

Comfort

7.2

Crew

8.1

Reviews

1 / 10

For a first class fair this was the worse ever. 1. Long delay departing. 2. Long time landing. 3. Late getting car hire. 4. No compensation whatsoever. Do I need to say more. You check it out yourself.

American Airlines
7.3
Good
14,316 reviews
United Airlines
7.4
Good
10,799 reviews
Check prices

Overall

7.4

Food

6.7

Entertainment

7.1

Boarding

7.7

Comfort

7.2

Crew

8.1

Reviews

1 / 10

For a first class fair this was the worse ever. 1. Long delay departing. 2. Long time landing. 3. Late getting car hire. 4. No compensation whatsoever. Do I need to say more. You check it out yourself.

Spirit Airlines
6.4
Okay
8,617 reviews
United Airlines
7.4
Good
10,799 reviews
Check prices

Overall

7.4

Food

6.7

Entertainment

7.1

Boarding

7.7

Comfort

7.2

Crew

8.1

Reviews

1 / 10

For a first class fair this was the worse ever. 1. Long delay departing. 2. Long time landing. 3. Late getting car hire. 4. No compensation whatsoever. Do I need to say more. You check it out yourself.

Frontier
6.3
Okay
4,016 reviews
United Airlines
7.4
Good
10,799 reviews
Check prices

Overall

7.4

Food

6.7

Entertainment

7.1

Boarding

7.7

Comfort

7.2

Crew

8.1

Reviews

1 / 10

For a first class fair this was the worse ever. 1. Long delay departing. 2. Long time landing. 3. Late getting car hire. 4. No compensation whatsoever. Do I need to say more. You check it out yourself.

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 $300 on Cheapflights?

    Yes, there are multiple flights from St. Louis to San Juan for under $300. The cheapest flight booked recently is on Spirit Airlines for just $257, but on average you can expect to pay $291.

  • Are there last-minute flights available from St. Louis to San Juan for under $300?

    There are currently 20+ open flights from St. Louis to San Juan within the next 7 days for less than $300.

  • What are the cheapest airlines flying 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 $257 on this airline. An additional option worth looking into is Frontier, starting at $280. Spirit Airlines is 43% 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 $73. Frontier flights start at $135 while deals on American Airlines start at $161 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. Atlanta 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 $54 per day.

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

    Atlanta travelers tend to visit Georgia Aquarium, Fox Theatre, and Piedmont Park more than any other notable places. Georgia Aquarium, Fox Theatre, and Piedmont Park are located about 8.6 mi, 9.3 mi, and 10.4 mi, respectively from Atlanta Hartsfield-Jackson. Travelers can book a car rental at Atlanta Hartsfield-Jackson for about $50 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 Orlando 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 5/28.

  • 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.

  • When is the best time 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 $248). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to San Juan
See prices for flight routes from nearby airports that may be better suited for you.

Kansas City to Luis Munoz Marin Intl flights
St. Louis 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 2,740,132 searches. Data last updated May 28, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$142Average$299FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$154Average$312FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
DeltaCheapest$271Average$449FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$276Average$509FlexibilityNo cancel feeOn-time71%
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Find flights from St. Louis to San Juan, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from St. Louis to San Juan

Find hourly flight availability from St. Louis to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 28, 2024.
0%of flight departuresEarly morningMidnight to 6 am
100%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
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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 May 28, 2024.
Sunday0daily flights
Monday0daily flights
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Saturday2daily flights

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

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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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