$101+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — STL
apr 9 — apr 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 marzo 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 marzo 10, 2026.
This Priceline deal was found by Cheapflights users on 3/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 4/133:08 am
SJU
- STL
1 stop21h 11m
Frontier
sab 4/184:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 3/8![Frontier logo]()
$202
This American Airlines deal was found by Cheapflights users on 3/6. 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.
gio 4/1610:03 am
SJU
- STL
1 stop13h 21m
American Airlines
dom 4/197:00 am
STL
- SJU
1 stop12h 51m
American Airlines
Deal found 3/6![American Airlines logo]()
$222
This Frontier deal was found by Cheapflights users on 3/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 4/163:19 pm
SJU
- STL
1 stop9h 00m
Frontier
dom 4/194:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 3/10![Frontier logo]()
$243
This Travelocity deal was found by Cheapflights users on 3/6. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/103:16 am
SJU
- STL
1 stop21h 09m
Frontier
sab 4/254:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 3/6![Frontier logo]()
$244
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 5/183:08 am
SJU
- STL
1 stop21h 11m
Frontier
mar 6/24:44 pm
STL
- SJU
1 stop8h 12m
Frontier
Deal found 3/6![Frontier logo]()
$269
This Delta deal was found by Cheapflights users on 3/7. 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.
gio 5/211:14 pm
SJU
- STL
1 stop11h 45m
Delta
mar 5/2610:49 am
STL
- SJU
1 stop10h 28m
Delta
Deal found 3/7![Delta logo]()
$276
This Frontier deal was found by Cheapflights users on 3/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 4/94:33 pm
SJU
- STL
1 stop7h 52m
Frontier
lun 4/138:41 am
STL
- SJU
1 stop10h 19m
Frontier
Deal found 3/5![Frontier logo]()
$279
This Trip.com deal was found by Cheapflights users on 3/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 3/177:54 pm
SJU
- STL
2 stops15h 43m
Multiple Airlines
mar 3/244:51 pm
STL
- SJU
1 stop8h 12m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$289
This Orbitz deal was found by Cheapflights users on 3/6. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/1710:54 am
SJU
- STL
1 stop13h 25m
Frontier
dom 5/34:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 3/6![Frontier logo]()
$300
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 marzo 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 marzo 10, 2026.
This American Airlines deal was found by Cheapflights users on 3/5. 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.
gio 5/1411:59 pm
SJU
- STL
1 stop9h 55m
American Airlines
mar 5/196:29 am
STL
- SJU
1 stop14h 36m
American Airlines
Deal found 3/5![American Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 3/6. 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.
mer 6/175:00 am
SJU
- STL
1 stop7h 30m
Southwest
mer 6/2410:30 am
STL
- SJU
2 stops10h 30m
Southwest
Deal found 3/6![Southwest logo]()
$396
This United Airlines deal was found by Cheapflights users on 3/5. 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.
gio 4/92:55 pm
SJU
- STL
1 stop8h 33m
United Airlines
lun 4/139:10 am
STL
- SJU
2 stops11h 14m
United Airlines
Deal found 3/5![United Airlines logo]()
$406
This Southwest deal was found by Cheapflights users on 3/8. 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.
mar 7/215:00 am
SJU
- STL
2 stops14h 25m
Southwest
gio 7/3011:00 am
STL
- SJU
1 stop9h 15m
Southwest
Deal found 3/8![Southwest logo]()
$410
This United Airlines deal was found by Cheapflights users on 3/9. 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.
mer 4/227:40 am
SJU
- STL
1 stop15h 12m
United Airlines
dom 4/269:10 am
STL
- SJU
1 stop10h 24m
United Airlines
Deal found 3/9![United Airlines logo]()
$451
This United Airlines deal was found by Cheapflights users on 3/10. 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.
mer 4/151:00 am
SJU
- STL
2 stops10h 45m
United Airlines
dom 4/197:45 am
STL
- SJU
2 stops11h 53m
United Airlines
Deal found 3/10![United Airlines logo]()
$488
Last-minute flights from Puerto Rico to St. LouisDiscover last-minute flight deals from Puerto Rico to St. Louis. Data last updated marzo 10, 2026 and is based on user searches.
Discover last-minute flight deals from Puerto Rico to St. Louis. Data last updated marzo 10, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 3/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 3/177:54 pm
SJU
- STL
2 stops15h 43m
Multiple Airlines
mar 3/244:51 pm
STL
- SJU
1 stop8h 12m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$289
This Priceline deal was found by Cheapflights users on 3/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 3/173:19 pm
SJU
- STL
1 stop9h 00m
Frontier
mar 3/244:51 pm
STL
- SJU
1 stop8h 12m
Frontier
Deal found 3/8![Frontier logo]()
$314
This Frontier deal was found by Cheapflights users on 3/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 4/94:33 pm
SJU
- STL
1 stop7h 52m
Frontier
lun 4/138:41 am
STL
- SJU
1 stop10h 19m
Frontier
Deal found 3/5![Frontier logo]()
$279
This Travelocity deal was found by Cheapflights users on 3/6. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/103:16 am
SJU
- STL
1 stop21h 09m
Frontier
sab 4/254:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 3/6![Frontier logo]()
$244
This Priceline deal was found by Cheapflights users on 3/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 4/133:08 am
SJU
- STL
1 stop21h 11m
Frontier
sab 4/184:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 3/8![Frontier logo]()
$202
This American Airlines deal was found by Cheapflights users on 3/6. 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.
gio 4/1610:03 am
SJU
- STL
1 stop13h 21m
American Airlines
dom 4/197:00 am
STL
- SJU
1 stop12h 51m
American Airlines
Deal found 3/6![American Airlines logo]()
$222
This Frontier deal was found by Cheapflights users on 3/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 4/163:19 pm
SJU
- STL
1 stop9h 00m
Frontier
dom 4/194:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 3/10![Frontier logo]()
$243
This Orbitz deal was found by Cheapflights users on 3/6. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/1710:54 am
SJU
- STL
1 stop13h 25m
Frontier
dom 5/34:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 3/6![Frontier logo]()
$300
This American Airlines deal was found by Cheapflights users on 3/6. 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.
sab 4/186:45 am
SJU
- STL
1 stop11h 36m
American Airlines
sab 5/28:57 am
STL
- SJU
2 stops10h 54m
American Airlines
Deal found 3/6![American Airlines logo]()
$323
This CheapOair deal was found by Cheapflights users on 3/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 4/193:21 am
SJU
- STL
1 stop20h 58m
Frontier
sab 4/254:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 3/8![Frontier logo]()
$329
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 marzo 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 marzo 10, 2026.
This Priceline deal was found by Cheapflights users on 3/6. 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.
mar 5/126:30 am
SJU
- STL
1 stop17h 49m
Frontier
Deal found 3/6![Frontier logo]()
$101
This Priceline deal was found by Cheapflights users on 3/6. 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.
mar 4/283:08 am
SJU
- STL
1 stop21h 11m
Frontier
Deal found 3/6![Frontier logo]()
$107
This Southwest deal was found by Cheapflights users on 3/9. 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.
mar 5/55:35 am
SJU
- STL
2 stops8h 50m
Southwest
Deal found 3/9![Southwest logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
lun 4/612:05 pm
SJU
- STL
1 stop23h 25m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$116
This Priceline deal was found by Cheapflights users on 3/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 4/143:08 am
SJU
- STL
1 stop21h 11m
Frontier
Deal found 3/10![Frontier logo]()
$117
This Trip.com deal was found by Cheapflights users on 3/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 4/2111:30 am
SJU
- STL
2 stops20h 20m
Frontier
Deal found 3/6![Frontier logo]()
$118
This Southwest deal was found by Cheapflights users on 3/6. 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.
mer 4/225:35 am
SJU
- STL
1 stop10h 40m
Southwest
Deal found 3/6![Southwest logo]()
$121
This Frontier deal was found by Cheapflights users on 3/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 6/96:00 am
SJU
- STL
1 stop8h 22m
Frontier
Deal found 3/5![Frontier logo]()
$122
This Booking.com deal was found by Cheapflights users on 3/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/109:10 pm
SJU
- STL
1 stop11h 41m
Frontier
Deal found 3/10![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
ven 4/2411:02 am
SJU
- STL
1 stop20h 48m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$126
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 marzo 10, 2026.
Round-trip from | $202 (Priceline) |
|---|---|
One-way from | $101 (Priceline) |
Popular in | July |
Cheapest in | January |
Average price | $440 |
Good round-trip deal | $696 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 marzo 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 - STL
SJUSTL
San Juan Luis Munoz Marin Intl
gio 5/14
11:59 pm-8:54 am
1 stop9h 55m
Lambert-St Louis
mar 5/19
6:29 am-10:05 pm
1 stop14h 36m
$309
Quickest round-trip
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
mer 6/17
5:00 am-11:30 am
1 stop7h 30m
Lambert-St Louis
mer 6/24
10:30 am-10:00 pm
2 stops10h 30m
$396
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
gio 4/9
2:55 pm-10:28 pm
1 stop8h 33m
Lambert-St Louis
lun 4/13
9:10 am-9:24 pm
2 stops11h 14m
$406
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
mar 7/21
5:00 am-6:25 pm
2 stops14h 25m
Lambert-St Louis
gio 7/30
11:00 am-9:15 pm
1 stop9h 15m
$410
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
mer 4/22
7:40 am-9:52 pm
1 stop15h 12m
Lambert-St Louis
dom 4/26
9:10 am-8:34 pm
1 stop10h 24m
$451
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
mer 4/15
1:00 am-10:45 am
2 stops10h 45m
Lambert-St Louis
dom 4/19
7:45 am-8:38 pm
2 stops11h 53m
$488
Cheapest one-way
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
mer 4/22
12:55 pm-11:36 pm
1 stop11h 41m
$111
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
mer 4/22
5:35 am-1:25 pm
2 stops8h 50m
$121
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
mer 6/3
1:00 am-12:11 pm
2 stops12h 11m
$138
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
mer 6/10
7:30 am-2:37 pm
1 stop8h 07m
$138
Showing 1-10 of 14 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, June is the cheapest month in which you can book a flight from Puerto Rico to St. Louis (average of $112). Flying from Puerto Rico to St. Louis in August is currently the most expensive (average of $264). 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 marzo 10, 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.
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 marzo 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.
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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 marzo 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 marzo 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 marzo 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$84 | Average$318 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$170 | Average$418 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$225 | Average$379 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$342 | Average$595 | FlexibilityNo cancel fee | On-time63% |