Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Juan Luis Munoz Marin Intl Airport to St. Louis from $58

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Juan Luis Munoz Marin Intl Airport to St. Louis departing on 1/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from San Juan Luis Munoz Marin Intl Airport to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
9:04 pm - 7:54 am
SJU
-
STL
12h 50m1 stop
Frontier Logo
12:47 pm - 2:30 am
STL
-
SJU
11h 43m1 stop
$148Frontier
Thu, Jan 15 - Mon, Jan 19
Frontier Logo
7:04 pm - 8:43 pm
SJU
-
STL
27h 39m1 stop
Frontier Logo
3:49 pm - 2:53 am
STL
-
SJU
9h 04m1 stop
$169Frontier
Thu, Feb 12 - Thu, Feb 19
Multiple Airlines Logo
8:05 pm - 7:54 am
SJU
-
STL
13h 49m1 stop
Multiple Airlines Logo
5:11 pm - 3:35 pm
STL
-
SJU
20h 24m2 stops
$222Multiple Airlines
Thu, Jan 15 - Mon, Jan 19
American Airlines Logo
2:59 pm - 11:52 pm
SJU
-
STL
9h 53m1 stop
American Airlines Logo
6:20 pm - 10:56 am
STL
-
SJU
15h 36m1 stop
$225American Airlines
Thu, Mar 26 - Mon, Mar 30
American Airlines Logo
6:00 am - 2:47 pm
SJU
-
STL
10h 47m2 stops
American Airlines Logo
6:00 am - 5:03 pm
STL
-
SJU
9h 03m2 stops
$229American Airlines
Thu, Jan 15 - Mon, Jan 19
American Airlines Logo
6:00 am - 2:47 pm
SJU
-
STL
10h 47m2 stops
American Airlines Logo
6:00 am - 5:03 pm
STL
-
SJU
9h 03m2 stops
$230American Airlines
Thu, Jan 15 - Mon, Jan 19
Frontier Logo
8:00 am - 11:33 pm
SJU
-
STL
17h 33m1 stop
Frontier Logo
5:42 pm - 3:26 pm
STL
-
SJU
19h 44m1 stop
$236Frontier
Mon, Feb 2 - Fri, Feb 6
Frontier Logo
4:16 pm - 6:51 am
SJU
-
STL
40h 35m2 stops
Frontier Logo
8:22 pm - 1:22 pm
STL
-
SJU
39h 00m2 stops
$257Frontier
Mon, Feb 2 - Fri, Feb 6
Frontier Logo
4:36 pm - 11:33 pm
SJU
-
STL
8h 57m1 stop
Frontier Logo
8:22 pm - 10:39 am
STL
-
SJU
12h 17m1 stop
$266Frontier
Mon, Feb 2 - Fri, Feb 6
Multiple Airlines Logo
8:05 pm - 11:33 pm
SJU
-
STL
29h 28m1 stop
Multiple Airlines Logo
8:22 pm - 6:58 pm
STL
-
SJU
20h 36m2 stops
$269Multiple Airlines
Mon, Feb 2 - Fri, Feb 6

Frontier flights from San Juan Luis Munoz Marin Intl Airport to St. Louis

Our best Frontier deals on San Juan Luis Munoz Marin Intl Airport to St. Louis flight tickets
Frontier
Jan 15
SJU9:04 pmSan Juan Luis Munoz Marin Intl
12h 50m
1 stop
STL7:54 amLambert-St Louis
Jan 19
STL12:47 pmLambert-St Louis
11h 43m
1 stop
SJU2:30 amSan Juan Luis Munoz Marin Intl
$148
Find similar
Frontier
Feb 12
SJU7:04 pmSan Juan Luis Munoz Marin Intl
27h 39m
1 stop
STL8:43 pmLambert-St Louis
Feb 19
STL3:49 pmLambert-St Louis
9h 04m
1 stop
SJU2:53 amSan Juan Luis Munoz Marin Intl
$169
Find similar
Frontier
Dec 23
SJU9:37 pmSan Juan Luis Munoz Marin Intl
26h 56m
1 stop
STL10:33 pmLambert-St Louis
Jan 1
STL10:42 amLambert-St Louis
11h 55m
1 stop
SJU12:37 amSan Juan Luis Munoz Marin Intl
$204
Find similar

American Airlines flights from San Juan Luis Munoz Marin Intl Airport to St. Louis

Our best American Airlines deals on San Juan Luis Munoz Marin Intl Airport to St. Louis flight tickets
American Airlines
Jan 15
SJU6:00 amSan Juan Luis Munoz Marin Intl
9h 03m
1 stop
STL1:03 pmLambert-St Louis
Jan 19
STL6:00 amLambert-St Louis
9h 03m
2 stops
SJU5:03 pmSan Juan Luis Munoz Marin Intl
$229
Find similar
American Airlines
Jan 15
SJU6:00 amSan Juan Luis Munoz Marin Intl
10h 47m
2 stops
STL2:47 pmLambert-St Louis
Jan 19
STL6:00 amLambert-St Louis
9h 03m
2 stops
SJU5:03 pmSan Juan Luis Munoz Marin Intl
$230
Find similar
American Airlines
Jan 20
SJU6:00 amSan Juan Luis Munoz Marin Intl
10h 50m
1 stop
STL2:50 pmLambert-St Louis
Jan 23
STL6:00 amLambert-St Louis
15h 56m
1 stop
SJU11:56 pmSan Juan Luis Munoz Marin Intl
$329
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Juan Luis Munoz Marin Intl Airport 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, momondo users made 832,500 searches. Data last updated December 14, 2025.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 1/15

9:04 pm-7:54 am

1 stop12h 50m

Lambert-St Louis

Mon 1/19

12:47 pm-2:30 am

1 stop11h 43m

$148

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 2/12

7:04 pm-8:43 pm

1 stop27h 39m

Lambert-St Louis

Thu 2/19

3:49 pm-2:53 am

1 stop9h 04m

$169

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 1/15

8:05 pm-7:54 am

1 stop13h 49m

Lambert-St Louis

Mon 1/19

5:11 pm-3:35 pm

2 stops20h 24m

$222

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 3/26

2:59 pm-11:52 pm

1 stop9h 53m

Lambert-St Louis

Mon 3/30

6:20 pm-10:56 am

1 stop15h 36m

$225

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 1/15

6:00 am-2:47 pm

2 stops10h 47m

Lambert-St Louis

Mon 1/19

6:00 am-5:03 pm

2 stops9h 03m

$229

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 1/15

6:00 am-2:47 pm

2 stops10h 47m

Lambert-St Louis

Mon 1/19

6:00 am-5:03 pm

2 stops9h 03m

$230

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Mon 2/2

8:00 am-11:33 pm

1 stop17h 33m

Lambert-St Louis

Fri 2/6

5:42 pm-3:26 pm

1 stop19h 44m

$236

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Mon 2/2

4:16 pm-6:51 am

2 stops40h 35m

Lambert-St Louis

Fri 2/6

8:22 pm-1:22 pm

2 stops39h 00m

$257

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Mon 2/2

4:36 pm-11:33 pm

1 stop8h 57m

Lambert-St Louis

Fri 2/6

8:22 pm-10:39 am

1 stop12h 17m

$266

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Mon 2/2

8:05 pm-11:33 pm

1 stop29h 28m

Lambert-St Louis

Fri 2/6

8:22 pm-6:58 pm

2 stops20h 36m

$269

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to St. Louis from

How to get the cheapest flight ticket from San Juan Luis Munoz Marin Intl Airport to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, January is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $256. The month of September is another great option to travel to St. Louis, with average flight prices from San Juan Luis Munoz Marin Intl Airport averaging around $300.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $349. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $583. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from San Juan Luis Munoz Marin Intl Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $282 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $624 per ticket.

What is the cheapest San Juan Luis Munoz Marin Intl to Lambert-St Louis flight route?

Fly from San Juan Luis Munoz Marin Intl to Lambert-St Louis for the best San Juan Luis Munoz Marin Intl - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from San Juan Luis Munoz Marin Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $397 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from San Juan Luis Munoz Marin Intl Airport for as low as $210 on momondo.

What cabin class options are available on San Juan Luis Munoz Marin Intl to Lambert-St Louis flights?

There is only 1 cabin class available to choose from on San Juan Luis Munoz Marin Intl to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Juan Luis Munoz Marin Intl Airport to St. Louis flights?

No. A direct flight is the cheapest option for a flight between San Juan Luis Munoz Marin Intl Airport to St. Louis.

How have San Juan Luis Munoz Marin Intl Airport to St. Louis flight prices changed over time?

As of December 2025, prices for San Juan Luis Munoz Marin Intl Airport to St. Louis flights are approximately 30% more expensive when compared to flights at the same time last year.

When to book flights from San Juan Luis Munoz Marin Intl Airport to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from San Juan Luis Munoz Marin Intl Airport to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Juan Luis Munoz Marin Intl Airport to St. Louis (SJU to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Juan Luis Munoz Marin Intl Airport to St. Louis

Fastest flight time

7h 10m

Direct flights

Sun

Airports in St. Louis

1 airport
The fastest flight from San Juan Luis Munoz Marin Intl Airport to St. Louis takes 7h 10m
Direct flights go from San Juan Luis Munoz Marin Intl Airport to St. Louis on Sunday. The only airline offering direct flights is Southwest.
There is 1 airport in St. Louis. From San Juan Luis Munoz Marin Intl Airport there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • How far is San Juan Luis Munoz Marin Intl to Lambert-St Louis by plane?

    The distance between San Juan Luis Munoz Marin Intl and Lambert-St Louis is about 2011.8 mi. A reasonable flight in good conditions will take 7h 10m.

  • When did momondo last update prices for flights from San Juan Luis Munoz Marin Intl Airport to Lambert-St Louis Airport?

    Prices for flights from San Juan Luis Munoz Marin Intl Airport to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from San Juan Luis Munoz Marin Intl Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from San Juan Luis Munoz Marin Intl Airport to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Juan Luis Munoz Marin Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from San Juan Luis Munoz Marin Intl Airport to St. Louis?

  • What is the most popular airline from San Juan Luis Munoz Marin Intl Airport to St. Louis?

Best airlines flying from San Juan Luis Munoz Marin Intl Airport to St. Louis

Compare and see reviews for airlines that fly from San Juan Luis Munoz Marin Intl Airport to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $128Free CancellationRating
5.8
3,080 reviews
Search Frontier flights
DeltaPriceFrom $205Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $225Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
American AirlinesPriceFrom $225Free CancellationRating
7.2
11,052 reviews
Search American Airlines flights
SouthwestPriceFrom $342Free CancellationRating
7.9
4,250 reviews
Search Southwest flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Farmington
Festus
Clayton
Glencoe
Edwardsville
Eureka
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from San Juan to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from San Juan.

Can I find flights from San Juan to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for San Juan to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from San Juan to St. Louis?

Once all potential San Juan to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from San Juan to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from San Juan are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 1/13
Tue 1/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States