$115+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — STL
Sep 9 — Sep 161
Round-trip
1 adult, Economy
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Find cheap flights from Puerto Rico to St. Louis 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Puerto Rico to St. Louis
Cheapest
Best
Last-minute
One-way
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 August 10, 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 August 10, 2026.
This American Airlines deal was found by Cheapflights users on 8/10. 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 10/156:20 am -
1 stop12h 07m
Mon 10/196:07 pm -
1 stop14h 39m
Deal found 8/10![American Airlines logo]()
$244
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Wed 10/146:20 am -
1 stop12h 29m
Wed 10/285:40 am -
1 stop8h 43m
Deal found 8/10![American Airlines logo]()
$254
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 11/45:30 pm -
1 stop18h 10m
Mon 11/1610:35 am -
2 stops30h 44m
Deal found 8/6![Frontier logo]()
$271
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.
Wed 10/76:30 am -
1 stop28h 10m
Mon 10/1910:35 am -
2 stops36h 41m
Deal found 8/5![Frontier logo]()
$272
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:25 pm -
1 stop24h 57m
Fri 9/112:29 pm -
2 stops42h 49m
Deal found 8/9![Frontier logo]()
$275
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.
Thu 9/175:11 pm -
1 stop20h 59m
Mon 10/1910:35 am -
2 stops36h 41m
Deal found 8/7![Frontier logo]()
$278
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.
Thu 10/83:51 pm -
1 stop18h 49m
Mon 10/1210:35 am -
2 stops36h 41m
Deal found 8/8![Frontier logo]()
$283
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.
Thu 9/104:39 pm -
2 stops21h 31m
Sun 9/205:19 pm -
1 stop28h 54m
Deal found 8/8![Frontier logo]()
$288
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 9/164:39 pm -
2 stops45h 31m
Sun 9/275:19 pm -
1 stop7h 33m
Deal found 8/8![Frontier logo]()
$289
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:57 pm -
1 stop20h 14m
Sun 8/306:17 pm -
2 stops29h 39m
Deal found 8/9![Frontier logo]()
$303
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 August 10, 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 August 10, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:59 pm -
1 stop9h 43m
Sat 10/31:40 pm -
1 stop7h 39m
Deal found 8/6![Delta logo]()
$356
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.
Thu 10/15:00 am -
2 stops9h 50m
Sat 10/31:20 pm -
1 stop7h 10m
Deal found 8/6![Southwest logo]()
$356
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.
Tue 10/66:30 am -
2 stops10h 18m
Mon 10/126:07 pm -
1 stop16h 24m
Deal found 8/9![American Airlines logo]()
$356
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:59 pm -
1 stop6h 43m
Sun 9/136:00 am -
1 stop9h 49m
Deal found 8/9![Delta logo]()
$356
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.
Fri 9/112:35 pm -
2 stops8h 35m
Sun 9/139:00 pm -
1 stop11h 10m
Deal found 8/5![Southwest logo]()
$356
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:54 pm -
1 stop10h 15m
Tue 10/276:20 pm -
1 stop14h 26m
Deal found 8/7![American Airlines logo]()
$356
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:00 am -
1 stop6h 32m
Mon 9/146:00 am -
1 stop6h 45m
Deal found 8/5![Delta logo]()
$356
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:00 am -
2 stops9h 44m
Tue 10/65:00 am -
1 stop7h 28m
Deal found 8/5![American Airlines logo]()
$362
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:00 am -
1 stop8h 33m
Mon 9/76:00 am -
1 stop6h 42m
Deal found 8/5![Delta logo]()
$356
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:51 am -
2 stops11h 51m
Wed 9/165:13 pm -
2 stops15h 11m
Deal found 8/5![American Airlines logo]()
$367
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:49 pm -
1 stop7h 09m
Mon 9/76:00 am -
1 stop6h 42m
Deal found 8/5![Delta logo]()
$356
Last-minute flights from Puerto Rico to St. LouisDiscover last-minute flight deals from Puerto Rico to St. Louis. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Puerto Rico to St. Louis. Data last updated August 10, 2026 and is based on user searches.
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:57 pm -
1 stop20h 14m
Sun 8/306:17 pm -
2 stops29h 39m
Deal found 8/9![Frontier logo]()
$303
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:57 pm -
1 stop20h 14m
Mon 8/316:17 pm -
2 stops29h 39m
Deal found 8/9![Frontier logo]()
$312
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.
Thu 9/33:10 am -
1 stop13h 18m
Mon 9/76:17 pm -
2 stops30h 50m
Deal found 8/8![Frontier logo]()
$320
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:25 pm -
1 stop24h 57m
Fri 9/112:29 pm -
2 stops42h 49m
Deal found 8/9![Frontier logo]()
$275
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.
Thu 9/104:39 pm -
2 stops21h 31m
Sun 9/205:19 pm -
1 stop28h 54m
Deal found 8/8![Frontier logo]()
$288
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.
Sun 9/135:11 pm -
1 stop20h 59m
Wed 9/162:29 pm -
2 stops10h 44m
Deal found 8/5![Frontier logo]()
$313
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 9/164:39 pm -
2 stops45h 31m
Sun 9/275:19 pm -
1 stop7h 33m
Deal found 8/8![Frontier logo]()
$289
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.
Thu 9/175:11 pm -
1 stop20h 59m
Mon 10/1910:35 am -
2 stops36h 41m
Deal found 8/7![Frontier logo]()
$278
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:30 am -
1 stop7h 40m
Sun 9/205:19 pm -
1 stop7h 33m
Deal found 8/9![Frontier logo]()
$309
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Fri 9/253:35 pm -
1 stop18h 49m
Thu 10/15:00 am -
1 stop9h 40m
Deal found 8/10![American Airlines logo]()
$306
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 August 10, 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 August 10, 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.
Tue 10/63:08 am -
2 stops31h 32m
Deal found 8/6![Frontier logo]()
$115
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.
Wed 11/46:12 pm -
2 stops17h 28m
Deal found 8/5![Frontier logo]()
$118
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Fri 9/1810:16 am -
2 stops11h 28m
Deal found 8/10![American Airlines logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 11/78:24 pm -
2 stops39h 16m
Deal found 8/10![Frontier logo]()
$124
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:05 pm -
2 stops40h 35m
Deal found 8/9![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Thu 9/104:39 pm -
2 stops21h 31m
Deal found 8/10![Frontier logo]()
$127
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 August 10, 2026.
Round-trip from | $244 (American Airlines) |
|---|---|
One-way from | $115 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $456 |
Good one-way deal | $260 or less |
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 August 10, 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 San Juan Luis Munoz Marin Intl - STL Lambert-St Louis
SJUSTL
San Juan Luis Munoz Marin Intl
Thu 10/1
2:59 pm-11:42 pm
1 stop9h 43m
Lambert-St Louis
Sat 10/3
1:40 pm-10:19 pm
1 stop7h 39m
$356
San JuanSt. Louis
SJU San Juan Luis Munoz Marin Intl - STL Lambert-St Louis
SJUSTL
San Juan Luis Munoz Marin Intl
Thu 10/1
5:00 am-1:50 pm
2 stops9h 50m
Lambert-St Louis
Sat 10/3
1:20 pm-9:30 pm
1 stop7h 10m
$356
San JuanSt. Louis
SJU San Juan Luis Munoz Marin Intl - STL Lambert-St Louis
SJUSTL
San Juan Luis Munoz Marin Intl
Tue 10/6
6:30 am-3:48 pm
2 stops10h 18m
Lambert-St Louis
Mon 10/12
6:07 pm-11:31 am
1 stop16h 24m
$356
San JuanSt. Louis
SJU San Juan Luis Munoz Marin Intl - STL Lambert-St Louis
SJUSTL
San Juan Luis Munoz Marin Intl
Fri 9/11
5:59 pm-11:42 pm
1 stop6h 43m
Lambert-St Louis
Sun 9/13
6:00 am-4:49 pm
1 stop9h 49m
$356
San JuanSt. Louis
SJU San Juan Luis Munoz Marin Intl - STL Lambert-St Louis
SJUSTL
San Juan Luis Munoz Marin Intl
Fri 9/11
2:35 pm-10:10 pm
2 stops8h 35m
Lambert-St Louis
Sun 9/13
9:00 pm-9:10 am
1 stop11h 10m
$356
San JuanSt. Louis
SJU San Juan Luis Munoz Marin Intl - STL Lambert-St Louis
SJUSTL
San Juan Luis Munoz Marin Intl
Tue 10/20
2:54 pm-12:09 am
1 stop10h 15m
Lambert-St Louis
Tue 10/27
6:20 pm-9:46 am
1 stop14h 26m
$356
Quickest round-trip
San JuanSt. Louis
SJU San Juan Luis Munoz Marin Intl - STL Lambert-St Louis
SJUSTL
San Juan Luis Munoz Marin Intl
Fri 9/11
7:00 am-12:32 pm
1 stop6h 32m
Lambert-St Louis
Mon 9/14
6:00 am-1:45 pm
1 stop6h 45m
$356
San JuanSt. Louis
SJU San Juan Luis Munoz Marin Intl - STL Lambert-St Louis
SJUSTL
San Juan Luis Munoz Marin Intl
Sat 9/5
7:00 am-2:33 pm
1 stop8h 33m
Lambert-St Louis
Mon 9/7
6:00 am-1:42 pm
1 stop6h 42m
$356
San JuanSt. Louis
SJU San Juan Luis Munoz Marin Intl - STL Lambert-St Louis
SJUSTL
San Juan Luis Munoz Marin Intl
Fri 9/4
5:49 pm-11:58 pm
1 stop7h 09m
Lambert-St Louis
Mon 9/7
6:00 am-1:42 pm
1 stop6h 42m
$356
San JuanSt. Louis
SJU San Juan Luis Munoz Marin Intl - STL Lambert-St Louis
SJUSTL
San Juan Luis Munoz Marin Intl
Sat 10/3
6:00 am-2:44 pm
2 stops9h 44m
Lambert-St Louis
Tue 10/6
5:00 am-1:28 pm
1 stop7h 28m
$362
Showing 1-10 of 20 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, January is the cheapest month in which you can book a flight from Puerto Rico to St. Louis (average of $248). Flying from Puerto Rico to St. Louis in July is currently the most expensive (average of $587). 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 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 7 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 August 10, 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.
Crew
8.6
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
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 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
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
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.
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Alternative routes for Puerto Rico to St. Louis
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Puerto Rico to St. Louis by cabin class
Find flights from Puerto Rico to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Puerto Rico and St. Louis flights
Browse other Puerto Rico and St. Louis flight options. Last updated on August 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 August 10, 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 August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$84 | Average$326 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$205 | Average$596 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$225 | Average$456 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$336 | Average$543 | FlexibilityNo cancel fee | On-time63% |