$117+ 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
Sep 6 — Sep 131
Round-trip
1 adult, Economy
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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
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Luis Munoz Marin Intl
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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 August 7, 2026.
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 August 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:29 pm -
2 stops25h 16m
Mon 9/286:30 am -
1 stop7h 40m
Deal found 8/2![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:29 pm -
1 stop22h 11m
Wed 11/46:12 pm -
2 stops17h 28m
Deal found 8/6![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:35 am -
2 stops12h 03m
Thu 10/223:51 pm -
1 stop18h 49m
Deal found 8/4![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/72:29 pm -
2 stops10h 44m
Sun 10/113:51 pm -
1 stop18h 49m
Deal found 8/6![Frontier logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/232:29 pm -
2 stops10h 44m
Mon 9/286:30 am -
1 stop7h 40m
Deal found 8/6![Frontier logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:29 pm -
2 stops25h 16m
Wed 9/306:42 pm -
1 stop24h 12m
Deal found 8/2![Frontier logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:35 am -
2 stops12h 22m
Sat 11/77:42 pm -
1 stop25h 57m
Deal found 8/3![Frontier logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:29 pm -
2 stops25h 21m
Mon 10/56:30 am -
1 stop7h 40m
Deal found 8/5![Frontier logo]()
$292
Best flights from St. Louis to Luis Munoz Marin IntlDiscover 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 August 7, 2026.
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 August 7, 2026.
This American Airlines deal was found by Cheapflights users on 8/6. 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 9/36:54 am -
1 stop16h 05m
Thu 9/102:58 pm -
2 stops8h 44m
Deal found 8/6![American Airlines logo]()
$356
This Southwest deal was found by Cheapflights users on 8/4. 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 10/234:20 pm -
2 stops8h 00m
Mon 11/25:35 am -
2 stops10h 30m
Deal found 8/4![Southwest logo]()
$356
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Wed 12/97:33 am -
2 stops12h 49m
Wed 12/168:30 am -
2 stops14h 43m
Deal found 8/5![United Airlines logo]()
$531
This Southwest deal was found by Cheapflights users on 8/2. 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.
Tue 10/62:25 pm -
2 stops8h 20m
Fri 10/95:30 am -
2 stops14h 35m
Deal found 8/2![Southwest logo]()
$396
This American Airlines deal was found by Cheapflights users on 8/6. 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.
Sun 9/206:30 am -
2 stops13h 17m
Wed 9/302:58 pm -
2 stops10h 29m
Deal found 8/6![American Airlines logo]()
$421
This Southwest deal was found by Cheapflights users on 8/1. 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.
Sun 9/206:00 am -
2 stops10h 05m
Wed 9/305:15 am -
2 stops7h 55m
Deal found 8/1![Southwest logo]()
$421
This American Airlines deal was found by Cheapflights users on 8/6. 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.
Wed 1/1311:31 am -
1 stop8h 08m
Wed 1/202:52 pm -
2 stops10h 20m
Deal found 8/6![American Airlines logo]()
$426
This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/510:55 am -
Nonstop4h 20m
Sun 12/139:35 pm -
1 stop13h 45m
Deal found 8/2![Southwest logo]()
$457
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/285:05 am -
1 stop9h 30m
Sat 12/510:55 am -
Nonstop5h 00m
Deal found 8/5![Southwest logo]()
$482
This Southwest deal was found by Cheapflights users on 8/6. 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.
Wed 1/2711:30 am -
2 stops9h 35m
Sun 2/75:35 am -
2 stops9h 05m
Deal found 8/6![Southwest logo]()
$493
Last-minute flights from St. Louis to Luis Munoz Marin IntlDiscover last-minute flight deals from St. Louis to Luis Munoz Marin Intl. Data last updated August 7, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Luis Munoz Marin Intl. Data last updated August 7, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:02 pm -
1 stop14h 09m
Wed 8/265:37 pm -
2 stops24h 45m
Deal found 8/2![Frontier logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:17 pm -
2 stops29h 39m
Fri 9/116:30 am -
1 stop7h 40m
Deal found 8/5![Frontier logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:29 pm -
2 stops25h 16m
Mon 9/286:30 am -
1 stop7h 40m
Deal found 8/2![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:29 pm -
2 stops25h 16m
Wed 9/306:42 pm -
1 stop24h 12m
Deal found 8/2![Frontier logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:29 pm -
1 stop22h 11m
Tue 9/298:45 am -
2 stops29h 25m
Deal found 8/2![Frontier logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/232:29 pm -
2 stops10h 44m
Mon 9/286:30 am -
1 stop7h 40m
Deal found 8/6![Frontier logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/232:29 pm -
2 stops22h 05m
Wed 9/306:42 pm -
1 stop24h 12m
Deal found 8/2![Frontier logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:39 pm -
1 stop18h 39m
Thu 10/85:12 pm -
2 stops17h 28m
Deal found 8/2![Frontier logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:29 pm -
2 stops19h 24m
Sat 10/103:51 pm -
1 stop18h 49m
Deal found 8/6![Frontier logo]()
$297
One-way flights from St. Louis to Luis Munoz Marin IntlSearch 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 August 7, 2026.
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 August 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:29 pm -
2 stops23h 48m
Deal found 8/6![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:29 pm -
2 stops25h 16m
Deal found 8/2![Frontier logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:17 pm -
2 stops29h 39m
Deal found 8/2![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:17 pm -
2 stops29h 39m
Deal found 8/5![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:35 am -
2 stops36h 03m
Deal found 8/2![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:17 pm -
2 stops29h 39m
Deal found 8/5![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:29 pm -
2 stops25h 21m
Deal found 8/6![Frontier logo]()
$132
Find flight deals from St. Louis to Luis Munoz Marin Intl
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Luis Munoz Marin Intl (SJU). 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 August 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $272 (Kiwi.com) |
One-way from | $117 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $409 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Luis Munoz Marin Intl 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 August 7, 2026.
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
Cheapest round-trip
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Thu 9/3
6:54 am-11:59 pm
1 stop16h 05m
San Juan Luis Munoz Marin Intl
Thu 9/10
2:58 pm-10:42 pm
2 stops8h 44m
$356
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Fri 10/23
4:20 pm-1:20 am
2 stops8h 00m
San Juan Luis Munoz Marin Intl
Mon 11/2
5:35 am-2:05 pm
2 stops10h 30m
$356
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Tue 10/6
2:25 pm-11:45 pm
2 stops8h 20m
San Juan Luis Munoz Marin Intl
Fri 10/9
5:30 am-7:05 pm
2 stops14h 35m
$396
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Sun 9/20
6:30 am-8:47 pm
2 stops13h 17m
San Juan Luis Munoz Marin Intl
Wed 9/30
2:58 pm-12:27 am
2 stops10h 29m
$421
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Sun 9/20
6:00 am-5:05 pm
2 stops10h 05m
San Juan Luis Munoz Marin Intl
Wed 9/30
5:15 am-12:10 pm
2 stops7h 55m
$421
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Wed 1/13
11:31 am-9:39 pm
1 stop8h 08m
San Juan Luis Munoz Marin Intl
Wed 1/20
2:52 pm-11:12 pm
2 stops10h 20m
$426
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Sat 12/5
10:55 am-5:15 pm
Nonstop4h 20m
San Juan Luis Munoz Marin Intl
Sun 12/13
9:35 pm-9:20 am
1 stop13h 45m
$457
Quickest round-trip
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Sat 11/28
5:05 am-4:35 pm
1 stop9h 30m
San Juan Luis Munoz Marin Intl
Sat 12/5
10:55 am-1:55 pm
Nonstop5h 00m
$482
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Wed 1/27
11:30 am-11:05 pm
2 stops9h 35m
San Juan Luis Munoz Marin Intl
Sun 2/7
5:35 am-12:40 pm
2 stops9h 05m
$493
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Wed 12/9
7:33 am-10:22 pm
2 stops12h 49m
San Juan Luis Munoz Marin Intl
Wed 12/16
8:30 am-9:13 pm
2 stops14h 43m
$531
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Luis Munoz Marin Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Luis Munoz Marin Intl in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-San Juan Luis Munoz Marin Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
STL-SJU
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
Prices
Delays
More
How far ahead should I book a flight from St. Louis to San Juan Luis Munoz Marin Intl Airport?
Booking 55 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, October is the cheapest month in which you can book a flight from St. Louis to San Juan Luis Munoz Marin Intl Airport (average of $325). Flying from St. Louis to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $573). 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?
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 August 7, 2026.
When flying from St. Louis to San Juan Luis Munoz Marin Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How often are flights from St. Louis to San Juan delayed?
About 30% of weekly flights between St. Louis and San Juan have experienced delays in the past year, with the average delay time being 93 minutes.
What is the most punctual flight time for St. Louis to San Juan flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on St. Louis to San Juan flights?
Over the last year, Southwest have had the lowest number of delays on this route, with just 30% of flights being delayed.
What’s the top layover airport for flights from St. Louis to San Juan Luis Munoz Marin Intl Airport?
Share of 1-stop round-trip flights from St. Louis to San Juan Luis Munoz Marin Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Orlando (MCO) – chosen by Cheapflights users on 45% of 1-stop itineraries from St. Louis to San Juan Luis Munoz Marin Intl Airport on Cheapflights.
What’s the cheapest layover airport for flights from St. Louis to San Juan Luis Munoz Marin Intl Airport?
Average round-trip fare for 1-stop flights from St. Louis to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Chicago (ORD) is the most affordable 1-stop option, with an average round-trip price of $273.
What’s the fastest layover option from St. Louis to San Juan Luis Munoz Marin Intl Airport?
Shortest average travel time for 1-stop one-way flights from St. Louis to San Juan Luis Munoz Marin Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 6h 43m.
Which airport typically offers the quickest layover for flights from St. Louis to San Juan Luis Munoz Marin Intl Airport?
Average layover duration for 1-stop one-way flights from St. Louis to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 30m.
Reviews of airlines servicing Luis Munoz Marin Intl
Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated August 7, 2026.
Read through reviews of airlines operating flights from St. Louis to San Juan Luis Munoz Marin Intl Airport, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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.
Traveling to a place near San Juan Luis Munoz Marin Intl Airport?
Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locationsFajardo
Luquillo
Dorado
Rio Grande
Humacao
Bayamón
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Top 5 airlines flying from St. Louis to Luis Munoz Marin Intl
Discover the top 5 airlines that operate flights from St. Louis to Luis Munoz Marin Intl. 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 August 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$148 | Average$333 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$205 | Average$416 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$225 | Average$406 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$250 | Average$495 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$483 | FlexibilityNo cancel fee | On-time63% |