$117+ Cheap flights from St. Louis (STL) to San Juan
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 8 — Sep 151
Round-trip
1 adult, Economy
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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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Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to San JuanExplore the most affordable flight options available from St. Louis to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 9, 2026.
Explore the most affordable flight options available from St. Louis to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/66:17 pm -
1 stop18h 59m
Sun 9/1311:23 am -
2 stops26h 47m
Deal found 8/8![Frontier logo]()
$268
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 8/7. 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
Sun 9/275:11 pm -
1 stop20h 59m
Deal found 8/7![Frontier logo]()
$274
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 8/8. 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 10/45:19 pm -
1 stop7h 33m
Sun 10/115:12 pm -
2 stops17h 28m
Deal found 8/8![Frontier logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 10/1610:35 am -
2 stops12h 03m
Sat 10/243:51 pm -
1 stop18h 49m
Deal found 8/8![Frontier logo]()
$289
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.
Sat 11/710:35 am -
2 stops12h 03m
Wed 11/115:30 pm -
1 stop18h 10m
Deal found 8/6![Frontier logo]()
$290
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 San JuanDiscover carefully curated flight deals from St. Louis to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
Discover carefully curated flight deals from St. Louis to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:05 am -
1 stop8h 44m
Mon 9/215:59 pm -
1 stop6h 43m
Deal found 8/4![Delta logo]()
$356
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Mon 11/165:00 am -
1 stop8h 40m
Thu 11/198:25 am -
1 stop10h 26m
Deal found 8/8![United 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 American Airlines deal was found by Cheapflights users on 8/8. 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 9/66:00 am -
2 stops11h 33m
Sun 9/1310:16 am -
2 stops12h 08m
Deal found 8/8![American Airlines logo]()
$421
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.
Thu 10/296:10 pm -
1 stop6h 10m
Sat 11/710:55 am -
Nonstop5h 00m
Deal found 8/4![Southwest logo]()
$392
This American Airlines deal was found by Cheapflights users on 8/9. 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 1/246:00 am -
2 stops9h 03m
Tue 2/28:20 am -
1 stop8h 44m
Deal found 8/9![American Airlines logo]()
$421
This Southwest deal was found by Cheapflights users on 8/8. 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 10/1610:40 am -
2 stops12h 40m
Sat 10/245:00 am -
2 stops9h 00m
Deal found 8/8![Southwest logo]()
$396
This United Airlines deal was found by Cheapflights users on 8/7. 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.
Sun 1/248:33 am -
2 stops11h 49m
Mon 2/12:05 am -
2 stops15h 36m
Deal found 8/7![United Airlines logo]()
$446
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1310:53 am -
1 stop8h 07m
Tue 11/172:05 am -
2 stops15h 38m
Deal found 8/7![United Airlines logo]()
$446
This Southwest deal was found by Cheapflights users on 8/8. 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 10/175:20 am -
1 stop7h 05m
Sat 10/177:55 pm -
1 stop12h 45m
Deal found 8/8![Southwest logo]()
$416
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Tue 10/271:08 pm -
2 stops9h 28m
Fri 10/306:40 am -
1 stop11h 10m
Deal found 8/8![United Airlines logo]()
$446
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 1/156:50 pm -
1 stop13h 00m
Sat 1/237:50 am -
2 stops9h 40m
Deal found 8/4![Southwest logo]()
$436
Last-minute flights from St. Louis to San JuanDiscover last-minute flight deals from St. Louis to San Juan. Data last updated August 9, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to San Juan. Data last updated August 9, 2026 and is based on user searches.
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 8/8. 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 9/66:17 pm -
1 stop18h 59m
Sun 9/1311:23 am -
2 stops26h 47m
Deal found 8/8![Frontier logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 9/182:29 pm -
2 stops25h 34m
Sun 9/207:00 am -
1 stop10h 34m
Deal found 8/7![Frontier logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 8/7. 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
Sun 9/275:11 pm -
1 stop20h 59m
Deal found 8/7![Frontier logo]()
$274
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 8/8. 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 stops19h 24m
Sun 9/275:11 pm -
1 stop20h 59m
Deal found 8/8![Frontier logo]()
$293
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 San JuanSearch for one-way flight options from St. Louis to San Juan. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
Search for one-way flight options from St. Louis to San Juan. Find affordable one-way fares based on user searches. Data last updated August 9, 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 8/7. 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 11/910:35 am -
2 stops36h 03m
Deal found 8/7![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 stops30h 50m
Deal found 8/7![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 10/1110:35 am -
2 stops36h 03m
Deal found 8/8![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 8/4. 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.
Fri 10/22:29 pm -
2 stops25h 21m
Deal found 8/4![Frontier logo]()
$131
Find 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 August 9, 2026.
Round-trip from | $268 (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 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 2,558,603 searches. Data last updated August 9, 2026.
Use the filters below to find and compare flights from St. Louis to San Juan 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 9/17
7:05 am-4:49 pm
1 stop8h 44m
San Juan Luis Munoz Marin Intl
Mon 9/21
5:59 pm-11:42 pm
1 stop6h 43m
$356
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Mon 11/16
5:00 am-3:40 pm
1 stop8h 40m
San Juan Luis Munoz Marin Intl
Thu 11/19
8:25 am-4:51 pm
1 stop10h 26m
$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
Quickest round-trip
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Thu 10/29
6:10 pm-1:20 am
1 stop6h 10m
San Juan Luis Munoz Marin Intl
Sat 11/7
10:55 am-1:55 pm
Nonstop5h 00m
$392
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Fri 10/16
10:40 am-12:20 am
2 stops12h 40m
San Juan Luis Munoz Marin Intl
Sat 10/24
5:00 am-1:00 pm
2 stops9h 00m
$396
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Sat 10/17
5:20 am-1:25 pm
1 stop7h 05m
San Juan Luis Munoz Marin Intl
Sat 10/17
7:55 pm-7:40 am
1 stop12h 45m
$416
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Sun 9/6
6:00 am-6:33 pm
2 stops11h 33m
San Juan Luis Munoz Marin Intl
Sun 9/13
10:16 am-9:24 pm
2 stops12h 08m
$421
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Sun 1/24
6:00 am-5:03 pm
2 stops9h 03m
San Juan Luis Munoz Marin Intl
Tue 2/2
8:20 am-3:04 pm
1 stop8h 44m
$421
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Fri 1/15
6:50 pm-9:50 am
1 stop13h 00m
San Juan Luis Munoz Marin Intl
Sat 1/23
7:50 am-3:30 pm
2 stops9h 40m
$436
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Sun 1/24
8:33 am-10:22 pm
2 stops11h 49m
San Juan Luis Munoz Marin Intl
Mon 2/1
2:05 am-3:41 pm
2 stops15h 36m
$446
Showing 1-10 of 23 resultsSorted by cheapest first
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.
STL-PR1
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
STL-PR1
STL-SJU
What is the cheapest month to book a flight from St. Louis to San Juan?
Currently, October is the cheapest month in which you can book a flight from St. Louis to San Juan (average of $325). Flying from St. Louis to San Juan in December is currently the most expensive (average of $596). 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.
How much does it cost to fly round-trip from St. Louis to San Juan?
Airfare is below average for this route at the moment.
St. Louis to San Juan flights typically cost between $336 and $603 in September.The cheapest round-trip price found within the last 5 days was $268 on Frontier (Sep 6-Sep 13).
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.
How far ahead should I book a flight from St. Louis to San Juan?
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 53 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 August 9, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from St. Louis to San Juan to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
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 San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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St. Louis and San Juan flights
Browse other St. Louis and San Juan flight options. Last updated on August 9, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on August 9, 2026.
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Top 5 airlines flying from St. Louis to San Juan
Discover the top 5 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 2,558,603 searches. Data last updated August 9, 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% |