$160+ Cheap flights from Puerto Rico to St. Louis (STL)
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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — STL
Jul 11 — Jul 181
Round-trip
1 adult, Economy
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Find cheap flights from Puerto Rico to St. Louis with Cheapflights
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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 flights from Puerto Rico to St. LouisExplore the most affordable flight options available from Puerto Rico to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
Explore the most affordable flight options available from Puerto Rico to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
This Delta deal was found by Cheapflights users on 6/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:49 pm
SJU
- STL
1 stop7h 09m
Delta
Tue 8/2511:00 am
STL
- SJU
1 stop10h 29m
Delta
Deal found 6/7![Delta logo]()
$336
This American Airlines deal was found by Cheapflights users on 6/6. 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 8/134:53 pm
SJU
- STL
1 stop6h 47m
American Airlines
Tue 8/2510:44 am
STL
- SJU
2 stops10h 11m
American Airlines
Deal found 6/6![American Airlines logo]()
$342
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Thu 9/2410:16 am
SJU
- STL
1 stop14h 30m
American Airlines
Wed 9/305:10 pm
STL
- SJU
1 stop15h 14m
American Airlines
Deal found 6/8![American Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 8/165:15 pm
SJU
- STL
1 stop16h 42m
Frontier
Sat 8/225:33 pm
STL
- SJU
2 stops43h 56m
Frontier
Deal found 6/10![Frontier logo]()
$376
This Southwest deal was found by Cheapflights users on 6/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:55 pm
SJU
- STL
1 stop11h 50m
Southwest
Tue 8/257:15 am
STL
- SJU
2 stops9h 55m
Southwest
Deal found 6/7![Southwest logo]()
$381
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Fri 9/252:58 pm
SJU
- STL
1 stop9h 48m
American Airlines
Thu 10/12:13 pm
STL
- SJU
1 stop18h 11m
American Airlines
Deal found 6/8![American Airlines logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/105:15 pm
SJU
- STL
1 stop16h 42m
Frontier
Fri 7/174:57 pm
STL
- SJU
2 stops43h 58m
Frontier
Deal found 6/10![Frontier logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 7/176:30 am
SJU
- STL
2 stops27h 27m
Frontier
Sat 8/14:57 pm
STL
- SJU
1 stop20h 19m
Frontier
Deal found 6/7![Frontier logo]()
$404
This American Airlines deal was found by Cheapflights users on 6/10. 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 8/133:47 pm
SJU
- STL
2 stops9h 27m
American Airlines
Mon 8/246:00 am
STL
- SJU
2 stops11h 30m
American Airlines
Deal found 6/10![American Airlines logo]()
$413
This American Airlines deal was found by Cheapflights users on 6/6. 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 8/56:00 am
SJU
- STL
2 stops11h 25m
American Airlines
Wed 8/196:54 am
STL
- SJU
2 stops10h 40m
American Airlines
Deal found 6/6![American Airlines logo]()
$426
Best flights from Puerto Rico to St. LouisDiscover carefully curated flight deals from Puerto Rico to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
Discover carefully curated flight deals from Puerto Rico to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
This Southwest deal was found by Cheapflights users on 6/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:00 am
SJU
- STL
2 stops10h 05m
Southwest
Mon 9/216:05 am
STL
- SJU
1 stop7h 25m
Southwest
Deal found 6/7![Southwest logo]()
$336
This Priceline deal was found by Cheapflights users on 6/6. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/266:16 pm
SJU
- STL
1 stop6h 33m
Frontier
Sat 7/113:41 pm
STL
- SJU
1 stop12h 21m
Frontier
Deal found 6/6![Frontier logo]()
$456
This United Airlines deal was found by Cheapflights users on 6/10. 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 9/151:00 am
SJU
- STL
2 stops11h 57m
United Airlines
Sat 9/198:00 am
STL
- SJU
2 stops11h 38m
United Airlines
Deal found 6/10![United Airlines logo]()
$476
This Southwest deal was found by Cheapflights users on 6/10. 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 8/169:25 pm
SJU
- STL
1 stop11h 20m
Southwest
Sat 8/228:00 am
STL
- SJU
1 stop7h 40m
Southwest
Deal found 6/10![Southwest logo]()
$336
This Southwest deal was found by Cheapflights users on 6/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:35 am
SJU
- STL
1 stop6h 20m
Southwest
Tue 10/271:45 pm
STL
- SJU
2 stops9h 00m
Southwest
Deal found 6/9![Southwest logo]()
$336
This Southwest deal was found by Cheapflights users on 6/8. 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.
Wed 10/146:10 am
SJU
- STL
2 stops14h 25m
Southwest
Sun 10/1810:15 am
STL
- SJU
2 stops9h 20m
Southwest
Deal found 6/8![Southwest logo]()
$381
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/191:00 am
SJU
- STL
2 stops12h 13m
United Airlines
Tue 10/2710:23 am
STL
- SJU
2 stops9h 59m
United Airlines
Deal found 6/9![United Airlines logo]()
$527
This Southwest deal was found by Cheapflights users on 6/10. 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 7/1610:20 pm
SJU
- STL
1 stop13h 00m
Southwest
Mon 7/2711:00 am
STL
- SJU
1 stop12h 20m
Southwest
Deal found 6/10![Southwest logo]()
$432
Last-minute flights from Puerto Rico to St. LouisDiscover last-minute flight deals from Puerto Rico to St. Louis. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from Puerto Rico to St. Louis. Data last updated June 11, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 6/265:15 pm
SJU
- STL
1 stop16h 37m
Frontier
Sat 7/114:57 pm
STL
- SJU
2 stops30h 44m
Frontier
Deal found 6/6![Frontier logo]()
$444
This Southwest deal was found by Cheapflights users on 6/10. 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 6/265:30 am
SJU
- STL
2 stops14h 00m
Southwest
Sat 7/41:25 pm
STL
- SJU
1 stop6h 35m
Southwest
Deal found 6/10![Southwest logo]()
$451
This American Airlines deal was found by Cheapflights users on 6/6. 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 7/16:01 am
SJU
- STL
1 stop17h 56m
American Airlines
Sun 7/55:10 am
STL
- SJU
1 stop16h 49m
American Airlines
Deal found 6/6![American Airlines logo]()
$438
This Priceline deal was found by Cheapflights users on 6/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:37 pm
SJU
- STL
1 stop28h 22m
Frontier
Mon 7/134:09 pm
STL
- SJU
1 stop26h 33m
Frontier
Deal found 6/7![Frontier logo]()
$456
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/105:15 pm
SJU
- STL
1 stop16h 42m
Frontier
Fri 7/174:57 pm
STL
- SJU
2 stops43h 58m
Frontier
Deal found 6/10![Frontier logo]()
$400
This Southwest deal was found by Cheapflights users on 6/10. 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 7/1610:20 pm
SJU
- STL
1 stop13h 00m
Southwest
Mon 7/2711:00 am
STL
- SJU
1 stop12h 20m
Southwest
Deal found 6/10![Southwest logo]()
$432
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/165:15 pm
SJU
- STL
1 stop16h 42m
Frontier
Sun 7/196:34 pm
STL
- SJU
2 stops29h 07m
Frontier
Deal found 6/9![Frontier logo]()
$436
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 7/176:30 am
SJU
- STL
2 stops27h 27m
Frontier
Sat 8/14:57 pm
STL
- SJU
1 stop20h 19m
Frontier
Deal found 6/7![Frontier logo]()
$404
This CheapOair deal was found by Cheapflights users on 6/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2410:48 pm
SJU
- STL
1 stop26h 11m
Frontier
Tue 7/283:41 pm
STL
- SJU
1 stop12h 21m
Frontier
Deal found 6/10![Frontier logo]()
$445
This American Airlines deal was found by Cheapflights users on 6/9. 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.
Sat 7/257:00 am
SJU
- STL
1 stop11h 02m
American Airlines
Mon 8/35:32 am
STL
- SJU
1 stop17h 18m
American Airlines
Deal found 6/9![American Airlines logo]()
$461
This American Airlines deal was found by Cheapflights users on 6/9. 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.
Mon 7/277:00 am
SJU
- STL
1 stop17h 32m
American Airlines
Mon 8/37:22 pm
STL
- SJU
1 stop8h 17m
American Airlines
Deal found 6/9![American Airlines logo]()
$413
One-way flights from Puerto Rico to St. LouisSearch for one-way flight options from Puerto Rico to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
Search for one-way flight options from Puerto Rico to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 8/106:26 am
SJU
- STL
2 stops36h 11m
Frontier
Deal found 6/10![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 8/56:26 am
SJU
- STL
2 stops36h 11m
Frontier
Deal found 6/10![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Tue 8/46:45 am
SJU
- STL
2 stops27h 12m
Frontier
Deal found 6/10![Frontier logo]()
$166
This Southwest deal was found by Cheapflights users on 6/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:30 am
SJU
- STL
1 stop7h 05m
Southwest
Deal found 6/9![Southwest logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/86:30 am
SJU
- STL
2 stops36h 07m
Frontier
Deal found 6/10![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 9/27:00 am
SJU
- STL
2 stops35h 30m
Frontier
Deal found 6/8![Frontier logo]()
$171
This United Airlines deal was found by Cheapflights users on 6/10. 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 6/302:05 am
SJU
- STL
1 stop9h 02m
United Airlines
Deal found 6/10![United Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 7/176:30 am
SJU
- STL
2 stops27h 27m
Frontier
Deal found 6/7![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 8/317:00 am
SJU
- STL
2 stops35h 30m
Frontier
Deal found 6/7![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 9/56:00 am
SJU
- STL
2 stops36h 30m
Frontier
Deal found 6/10![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 6/7. 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.
Thu 8/66:26 am
SJU
- STL
2 stops27h 31m
Frontier
Deal found 6/7![Frontier logo]()
$183
Find flight deals from Puerto Rico to St. Louis
Keep the following information in mind while searching for Puerto Rico to St. Louis flight deals. Data was last updated June 11, 2026.
Round-trip from | $336 (Southwest) |
|---|---|
One-way from | $160 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $486 |
Cheapflights Fare Finder
Customize your flight search to find flights from Puerto Rico to St. Louis 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 June 11, 2026.
Use the filters below to find and compare flights from Puerto Rico to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Thu 9/10
10:00 am-7:05 pm
2 stops10h 05m
Lambert-St Louis
Mon 9/21
6:05 am-2:30 pm
1 stop7h 25m
$336
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Sun 8/16
9:25 pm-7:45 am
1 stop11h 20m
Lambert-St Louis
Sat 8/22
8:00 am-4:40 pm
1 stop7h 40m
$336
Quickest round-trip
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Tue 10/20
5:35 am-10:55 am
1 stop6h 20m
Lambert-St Louis
Tue 10/27
1:45 pm-11:45 pm
2 stops9h 00m
$336
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Wed 10/14
6:10 am-7:35 pm
2 stops14h 25m
Lambert-St Louis
Sun 10/18
10:15 am-8:35 pm
2 stops9h 20m
$381
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Thu 7/16
10:20 pm-10:20 am
1 stop13h 00m
Lambert-St Louis
Mon 7/27
11:00 am-12:20 am
1 stop12h 20m
$432
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Fri 6/26
6:16 pm-11:49 pm
1 stop6h 33m
Lambert-St Louis
Sat 7/11
3:41 pm-5:02 am
1 stop12h 21m
$456
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Tue 9/15
1:00 am-11:57 am
2 stops11h 57m
Lambert-St Louis
Sat 9/19
8:00 am-8:38 pm
2 stops11h 38m
$476
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Mon 10/19
1:00 am-12:13 pm
2 stops12h 13m
Lambert-St Louis
Tue 10/27
10:23 am-9:22 pm
2 stops9h 59m
$527
Cheapest one-way
Quickest one-way
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Sat 12/5
10:55 am-1:55 pm
Nonstop5h 00m
$164
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Fri 12/4
3:10 pm-8:37 pm
1 stop7h 27m
$168
Showing 1-10 of 17 resultsSorted by cheapest first
Best time to book a flight from Puerto Rico to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Puerto Rico with our price prediction graph.
SJU-STL
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 Puerto Rico to St. Louis
PR0-STL
SJU-STL
What is the cheapest month to book a flight from Puerto Rico to St. Louis?
Currently, December is the cheapest month in which you can book a flight from Puerto Rico to St. Louis (average of $84). Flying from Puerto Rico to St. Louis in July is currently the most expensive (average of $238). 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 PR to STL?
Find hourly flight availability from Puerto Rico to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 11, 2026.
When flying from Puerto Rico to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How far ahead should I book a flight from Puerto Rico to St. Louis?
The best time to book flights from Puerto Rico to St. Louis is 81 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated June 11, 2026.
See what other customers who have flown with Southwest,Delta, andAmerican Airlines from Puerto Rico to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Puerto Rico to St. Louis. 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 St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington
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Alternative routes for Puerto Rico to St. Louis
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Puerto Rico and St. Louis flights
Browse other Puerto Rico and St. Louis flight options. Last updated on June 11, 2026.
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 11, 2026.
Top 4 airlines flying from Puerto Rico to St. Louis
Discover the top 4 airlines that operate flights from Puerto Rico to St. Louis. 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 June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$84 | Average$318 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$170 | Average$554 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$225 | Average$409 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$342 | Average$583 | FlexibilityNo cancel fee | On-time63% |