SJU - STL

$153 Find Cheap Flights from San Juan to St. Louis - Compare and Save

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Everything you should know

Cheapest round-trip
$270
Typical prices: $340-$510
Frontier
Tue 11/13Fri 11/16
SJU - STL • 1 stop
Cheapest non-stop
$743
Typical prices: $587-$742
Southwest
Wed 11/21Wed 11/28
SJU - STL • Non-stop
Nonstop flights
You can fly direct with Southwest. Average duration is 5h 01m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 38% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 39% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $312 (round-trip)
Shortest trip • 6h 44m (one-way)
Insights
Insights
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We hope you love your trip to St. Louis!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from San Juan to St. Louis (SJU-STL)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Juan to St. Louis

Fri, Nov 13 - Mon, Nov 16
Frontier Logo
7:23 am - 11:16 pmSJU  San Juan Luis Munoz Marin Intl-STL Lambert-St Louis
17h 53m1 stop Orlando
Frontier Logo
6:34 pm - 4:17 pmSTL  Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl
19h 43m2 stops Atlanta Hartsfield-Jackson Philadelphia
$270Frontier
Fri, Nov 13 - Mon, Nov 16
Frontier Logo
3:55 pm - 7:14 pmSJU  San Juan Luis Munoz Marin Intl-STL Lambert-St Louis
29h 19m2 stops Atlanta Hartsfield-Jackson Denver Intl
Frontier Logo
6:34 pm - 4:17 pmSTL  Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl
19h 43m2 stops Atlanta Hartsfield-Jackson Philadelphia
$277Frontier
Wed, Nov 11 - Sun, Nov 15
Frontier Logo
3:55 am - 11:16 pmSJU  San Juan Luis Munoz Marin Intl-STL Lambert-St Louis
21h 21m1 stop Orlando
Frontier Logo
4:26 pm - 10:15 amSTL  Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl
15h 49m1 stop Orlando
$316Frontier
Mon, Nov 23 - Tue, Dec 1
American Airlines Logo
1:18 pm - 9:37 pmSJU  San Juan Luis Munoz Marin Intl-STL Lambert-St Louis
10h 19m2 stops Miami Washington, D.C. Reagan-National
American Airlines Logo
6:43 am - 6:05 pmSTL  Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl
9h 22m2 stops Charlotte Douglas Miami
$396American Airlines
Mon, Nov 23 - Tue, Dec 1
American Airlines Logo
1:18 pm - 9:37 pmSJU  San Juan Luis Munoz Marin Intl-STL Lambert-St Louis
10h 19m2 stops Miami Washington, D.C. Reagan-National
American Airlines Logo
6:43 am - 9:27 pmSTL  Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl
12h 44m1 stop Charlotte Douglas
$396American Airlines
Wed, Feb 24 - Sun, Feb 28
Southwest Logo
6:15 am - 12:20 pmSJU  San Juan Luis Munoz Marin Intl-STL Lambert-St Louis
8h 05m1 stop Baltimore/Washington
Southwest Logo
7:55 pm - 10:25 amSTL  Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl
12h 30m1 stop Orlando
$396Southwest
Fri, Nov 13 - Tue, Nov 17
Southwest Logo
7:30 am - 3:20 pmSJU  San Juan Luis Munoz Marin Intl-STL Lambert-St Louis
9h 50m2 stops Orlando Nashville Intl
Southwest Logo
12:35 pm - 12:50 amSTL  Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl
10h 15m1 stop Orlando
$396Southwest
Fri, Nov 13 - Tue, Nov 17
Delta Logo
4:20 pm - 11:56 pmSJU  San Juan Luis Munoz Marin Intl-STL Lambert-St Louis
9h 36m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 5:43 pmSTL  Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl
9h 43m1 stop Atlanta Hartsfield-Jackson
$396Delta
Thu, Nov 12 - Sun, Nov 15
American Airlines Logo
1:40 pm - 9:38 pmSJU  San Juan Luis Munoz Marin Intl-STL Lambert-St Louis
9h 58m2 stops Miami Washington, D.C. Reagan-National
American Airlines Logo
6:47 am - 3:52 pmSTL  Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl
7h 05m1 stop Charlotte Douglas
$411American Airlines
Tue, Mar 2 - Thu, Mar 4
JetBlue Logo
6:15 am - 12:20 pmSJU  San Juan Luis Munoz Marin Intl-STL Lambert-St Louis
8h 05m1 stop Baltimore/Washington
JetBlue Logo
5:05 am - 7:55 pmSTL  Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl
12h 50m1 stop Orlando
$479JetBlue
Booking Insights

Price, demand and travel trends for San Juan Luis Munoz Marin Intl Airport to St. Louis flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from San Juan Luis Munoz Marin Intl Airport to St. Louis?

Round-trip flights from San Juan Luis Munoz Marin Intl Airport to St. Louis typically range from $340 to $510. The lowest price found in the past 5 days was $270, on Frontier.

What's the cheapest day of the week to fly from San Juan Luis Munoz Marin Intl Airport to St. Louis?

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from San Juan Luis Munoz Marin Intl Airport to St. Louis. It’s 26% cheaper than the average day, while Sunday is the most expensive, with prices 20% higher.

What’s the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to St. Louis?

•January is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to St. Louis at $264 round-trip.
•July ($555) and June ($486) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 110% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from San Juan Luis Munoz Marin Intl Airport to St. Louis the cheapest?

Flights from San Juan Luis Munoz Marin Intl Airport to St. Louis are cheapest 5 weeks before departure. Booking in this window typically costs about 38% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from San Juan to St. Louis

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Gabriel Leigh

Gabriel Leigh

Expert on SJU

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Key details for San Juan Luis Munoz Marin Intl Airport to St. Louis flights

Low season

December

Cheapest flight

$153
Beat the crowds with an average 48% drop in travelers.
The most popular month to fly with an average 44% increase in travelers.
One-way flight from San Juan Luis Munoz Marin Intl Airport to St. Louis

When to book flights from San Juan to St. Louis

Are your dates flexible? Find out the best times to travel from San Juan to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your San Juan Luis Munoz Marin Intl Airport to St. Louis flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    These are the earliest and latest flight times available from San Juan Luis Munoz Marin Intl Airport to St. Louis:

    • Earliest: departs at 10:55 am and lands at 3:56 pm
    • Latest: departs at 5:15 pm and lands at 10:16 pm.

    The flight takes about 5h 01m.

  • What cabin classes can I book on flights from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    Only Economy Class is available on flights from San Juan Luis Munoz Marin Intl Airport to St. Louis.

  • How long is a flight from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    A nonstop flight from San Juan Luis Munoz Marin Intl Airport to St. Louis takes 5h 01m, covering 2,024 miles.

  • Do I need a passport to fly from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a San Juan Luis Munoz Marin Intl Airport to St. Louis flight?

    Round-trip flights from San Juan Luis Munoz Marin Intl Airport to St. Louis range from $340 to $510, with an average of $434 over the past 12 months. Anything below $340 counts as a good deal.

  • How expensive are last-minute San Juan Luis Munoz Marin Intl Airport to St. Louis flights?

    Last-minute fares on this route (booked within two weeks of departure) run 15% above the $434 route average. Book 5 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $312 round-trip via Miami (MIA), compared to $587 for nonstop.

  • What is the standard checked-bag allowance on flights from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$45 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    The Boeing 737-900 family is used most often on this route, operated mainly by Delta and JetBlue. Other aircraft seen on the route include Airbus A321 (sharklets) variants.

  • Have flight prices from San Juan Luis Munoz Marin Intl Airport to St. Louis changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $270 to $1,139. That means the highest observed fare was about 4x higher than the lowest one.

  • How are flight prices from San Juan Luis Munoz Marin Intl Airport to St. Louis looking right now?

    One-way fares from San Juan Luis Munoz Marin Intl Airport to St. Louis are currently lower than usual. Average one-way flight prices are about $188, which is 35% below the typical average for this route.

  • What car rental options are available at Lambert-St Louis Airport (STL)?

    Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:

    • Hertz
    • Budget
    • Alamo
    • Enterprise Rent-A-Car
    • Payless

  • Which airports can I use when flying from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    Flights from San Juan Luis Munoz Marin Intl Airport to St. Louis usually depart from San Juan Luis Munoz Marin Intl (SJU) and arrive at Lambert-St Louis (STL).

  • Which airports do connecting flights from San Juan Luis Munoz Marin Intl Airport to St. Louis pass through?

    One-stop flights from San Juan Luis Munoz Marin Intl Airport to St. Louis most commonly connect through:

    • Orlando (MCO) - 45% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 29% of one-stop connections
    • Charlotte Douglas (CLT) - 6% of one-stop connections
    • Baltimore/Washington (BWI) - 5% of one-stop connections

  • Can I save money by using flexible dates for flights from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    Yes. Flexible dates can save you up to 39% on flights from San Juan Luis Munoz Marin Intl Airport to St. Louis. Friday is the cheapest departure day at $323 round-trip on average, while Sunday is the most expensive at $523, a difference of $200.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    Only Southwest operates flights between San Juan Luis Munoz Marin Intl Airport and St. Louis.

  • How much time can I save by choosing a different layover airport from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    Flying via Charlotte Douglas (CLT) gives the shortest average 1-stop total travel time at 6h 44m, compared with 7h 02m via Atlanta Hartsfield-Jackson (ATL) and 7h 17m via Baltimore/Washington (BWI).

  • What is the time difference between San Juan Luis Munoz Marin Intl Airport and St. Louis?

    St. Louis is 1 hour behind San Juan Luis Munoz Marin Intl Airport (Central Time vs Atlantic Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in St. Louis?

    Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

  • Which airlines include bags at no extra cost on San Juan Luis Munoz Marin Intl Airport to St. Louis flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Southwest: a cabin bag in Economy Class class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking San Juan Luis Munoz Marin Intl Airport to St. Louis flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Sunday. On this route, Friday flights average $323, about $200 less than Sunday fares (38% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 5 weeks before you fly. On this route, that window historically saves about 38% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your San Juan Luis Munoz Marin Intl Airport to St. Louis trip for January. Fares historically average $264 round-trip in that month - typically $291 less than the most expensive month, which is July (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Miami Airport (MIA) can be cheaper than flying direct. The cheapest layover option averages $312 round-trip on this route - about $275 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Lambert-St Louis Airport.

    • Renaissance St. Louis Airport Hotel
    • Drury Inn & Suites St. Louis Airport
    • DoubleTree by Hilton St. Louis Airport

Prefer to fly direct from San Juan to St. Louis?

 
Find which airlines fly direct from San Juan Luis Munoz Marin Intl Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

San Juan Luis Munoz Marin Intl to Lambert-St Louis

Saturday

Southwest

Southwest

See more direct flights

Direct returns

Lambert-St Louis to San Juan Luis Munoz Marin Intl

Saturday

Southwest

Southwest

See more direct flights

More options for your flight from San Juan to St. Louis

Complete your trip to St. Louis with a hotel stay or car rental