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Cheap flights from St. Louis to San Juan from $64

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to San Juan departing on 2/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to San Juan

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to San Juan that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to San Juan.

Cheap last minute flights

Planning a quick getaway from St. Louis to San Juan? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to San Juan, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to San Juan

Find recent round-trip train or bus tickets from St. Louis to San Juan.

All round-trip flight deals to San Juan

The cheapest plane tickets to San Juan found on KAYAK recently.
5:05 pm - 2:48 pmSTL-SJU
19h 43m1 stop
9:15 pm - 11:31 pmSJU-STL
28h 16m1 stop
$150Frontier
Find Deal
Sat, Jan 18 - Wed, Jan 22
5:05 pm - 10:37 amSTL-SJU
15h 32m1 stop
3:53 pm - 11:31 pmSJU-STL
9h 38m1 stop
$157Frontier
Find Deal
Sat, Feb 1 - Sun, Feb 9
9:44 am - 12:36 amSTL-SJU
12h 52m2 stops
2:05 am - 11:17 amSJU-STL
11h 12m1 stop
$264United Airlines
Find Deal
Sat, Feb 8 - Fri, Feb 14
10:28 am - 11:23 pmSTL-SJU
10h 55m1 stop
6:30 am - 4:12 pmSJU-STL
11h 42m1 stop
$284Delta
Find Deal
Mon, Dec 16 - Sun, Dec 29
4:27 pm - 8:22 pmSTL-SJU
25h 55m1 stop
8:43 pm - 2:43 pmSJU-STL
20h 00m1 stop
$289Spirit Airlines
Find Deal
Tue, Jan 7 - Wed, Jan 15
4:27 pm - 8:22 pmSTL-SJU
25h 55m1 stop
10:09 pm - 2:43 pmSJU-STL
18h 34m1 stop
$302Spirit Airlines
Find Deal
Tue, Jan 7 - Mon, Jan 13
11:47 am - 10:07 pmSTL-SJU
8h 20m2 stops
6:00 am - 2:26 pmSJU-STL
10h 26m2 stops
$303American Airlines
Find Deal
Sat, Feb 8 - Sat, Feb 15
10:28 am - 11:23 pmSTL-SJU
10h 55m1 stop
6:30 am - 2:39 pmSJU-STL
10h 09m1 stop
$304Delta
Find Deal
Mon, Dec 16 - Sat, Dec 28
8:00 am - 12:36 amSTL-SJU
14h 36m2 stops
2:05 am - 10:47 amSJU-STL
10h 42m1 stop
$328United Airlines
Find Deal
Wed, Jan 8 - Mon, Jan 13
6:29 pm - 11:45 amSTL-SJU
15h 16m1 stop
12:50 pm - 10:09 pmSJU-STL
11h 19m2 stops
$342American Airlines
Find Deal
Sat, Jan 11 - Wed, Jan 15
5:20 pm - 2:54 amSTL-SJU
7h 34m1 stop
$64Frontier
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Sat, Feb 22
5:05 pm - 10:23 amSTL-SJU
15h 18m1 stop
$69Frontier
Find Deal
Tue, Jan 21
7:18 am - 5:30 pmSTL-SJU
8h 12m2 stops
$132American Airlines
Find Deal
Tue, Jan 21
6:00 am - 5:30 pmSTL-SJU
9h 30m2 stops
$135American Airlines
Find Deal
Tue, Feb 11
6:00 am - 4:30 pmSTL-SJU
9h 30m1 stop
$152Delta
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Sun, May 18
6:00 am - 5:15 pmSTL-SJU
9h 15m1 stop
$171Delta
Find Deal
Mon, Dec 23
4:26 pm - 5:43 pmSTL-SJU
23h 17m1 stop
$188Spirit Airlines
Find Deal
Thu, Dec 12
4:26 pm - 1:42 amSTL-SJU
31h 16m2 stops
$190Spirit Airlines
Find Deal
Sun, Dec 8
12:41 pm - 6:12 amSTL-SJU
15h 31m2 stops
$216United Airlines
Find Deal
Sat, Jan 18
11:30 am - 12:36 amSTL-SJU
11h 06m2 stops
$257United Airlines
Find Deal
Sat, Jan 18
6:41 pm - 2:52 amSTL-SJU
6h 11m1 stop
9:15 pm - 11:24 pmSJU-STL
28h 09m1 stop
$395Frontier
Find Deal
Tue, Nov 26 - Wed, Dec 4
6:41 pm - 2:52 amSTL-SJU
6h 11m1 stop
10:44 pm - 3:21 pmSJU-STL
18h 37m2 stops
Tue, Nov 26 - Wed, Dec 4
5:21 pm - 7:49 pmSTL-SJU
24h 28m1 stop
3:59 am - 7:41 amSJU-STL
29h 42m1 stop
Sun, Nov 24 - Mon, Nov 25
5:21 pm - 10:07 amSTL-SJU
14h 46m2 stops
2:45 am - 4:26 pmSJU-STL
15h 41m2 stops
$609Spirit Airlines
Find Deal
Sun, Nov 24 - Mon, Nov 25
5:21 pm - 7:49 pmSTL-SJU
24h 28m1 stop
2:45 am - 4:26 pmSJU-STL
15h 41m2 stops
$614Spirit Airlines
Find Deal
Sun, Nov 24 - Mon, Nov 25
1:55 pm - 12:45 amSTL-SJU
8h 50m2 stops
5:35 am - 1:55 pmSJU-STL
10h 20m2 stops
$654Southwest
Find Deal
Mon, Nov 25 - Wed, Nov 27
10:10 am - 12:36 amSTL-SJU
12h 26m2 stops
2:05 am - 3:34 pmSJU-STL
15h 29m2 stops
$664United Airlines
Find Deal
Tue, Nov 26 - Tue, Dec 3
8:15 pm - 10:00 amSTL-SJU
11h 45m1 stop
7:50 am - 12:30 pmSJU-STL
6h 40m1 stop
$694Southwest
Find Deal
Fri, Nov 22 - Mon, Nov 25
9:30 am - 8:53 pmSTL-SJU
9h 23m1 stop
5:50 am - 1:27 pmSJU-STL
9h 37m2 stops
$719American Airlines
Find Deal
Sun, Nov 24 - Sat, Nov 30
8:05 am - 9:26 pmSTL-SJU
11h 21m2 stops
2:05 am - 3:39 pmSJU-STL
15h 34m2 stops
$804United Airlines
Find Deal
Mon, Nov 25 - Tue, Nov 26
11:35 am - 4:55 pmSTL-SJU
4h 20mnonstop
11:15 am - 3:25 pmSJU-STL
5h 10mnonstop
$835Southwest
Find Deal
Sat, Mar 29 - Sat, Apr 5
12:50 pm - 7:05 pmSTL-SJU
4h 15mnonstop
12:40 pm - 3:45 pmSJU-STL
5h 05mnonstop
$1,022Southwest
Find Deal
Sat, Jan 18 - Sat, Jan 25

Frontier flights from St. Louis to San Juan

Our best Frontier deals on St. Louis to San Juan flight tickets
Frontier
Jan 18
STL5:05 pmLambert-St Louis
19h 43m
1 stop
SJU2:48 pmSan Juan Luis Munoz Marin Intl
Jan 22
SJU9:15 pmSan Juan Luis Munoz Marin Intl
28h 16m
1 stop
STL11:31 pmLambert-St Louis
Frontier
Feb 1
STL5:05 pmLambert-St Louis
15h 32m
1 stop
SJU10:37 amSan Juan Luis Munoz Marin Intl
Feb 9
SJU3:53 pmSan Juan Luis Munoz Marin Intl
9h 38m
1 stop
STL11:31 pmLambert-St Louis
Frontier
Dec 7
STL4:13 pmLambert-St Louis
15h 40m
1 stop
SJU9:53 amSan Juan Luis Munoz Marin Intl
Dec 12
SJU5:05 pmSan Juan Luis Munoz Marin Intl
8h 19m
1 stop
STL11:24 pmLambert-St Louis

Southwest flights from St. Louis to San Juan

Our best Southwest deals on St. Louis to San Juan flight tickets
Southwest
Jan 14
STL1:00 pmLambert-St Louis
9h 40m
1 stop
SJU12:40 amSan Juan Luis Munoz Marin Intl
Jan 18
SJU12:40 pmSan Juan Luis Munoz Marin Intl
5h 05m
STL3:45 pmLambert-St Louis
Southwest
Jan 13
STL1:00 pmLambert-St Louis
9h 40m
1 stop
SJU12:40 amSan Juan Luis Munoz Marin Intl
Jan 18
SJU12:40 pmSan Juan Luis Munoz Marin Intl
5h 05m
STL3:45 pmLambert-St Louis
Southwest
Apr 4
STL9:55 pmLambert-St Louis
11h 30m
1 stop
SJU10:25 amSan Juan Luis Munoz Marin Intl
Apr 9
SJU1:55 pmSan Juan Luis Munoz Marin Intl
8h 55m
1 stop
STL9:50 pmLambert-St Louis

See travel insights to San Juan from

How to get the cheapest flight ticket from St. Louis to San Juan

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 typical price of a round-trip flight between St. Louis and San Juan?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in April, then September is your next best option. Flight prices from St. Louis to San Juan during September average around $353.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from St. Louis to San Juan is on a Tuesday when prices can be found for as low as $420. The most expensive day to fly to San Juan is Thursday, with ticket prices averaging around $492.

What is the cheapest time of day to depart on your flight to San Juan?

The cheapest time of day to fly to San Juan is in the evening when flights can be purchased for as low as $306. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $491 on average. Flights to San Juan from St. Louis at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Lambert-St Louis to San Juan flight route?

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

How far in advance should I book a flight to San Juan?

We recommend purchasing flights from St. Louis to San Juan 29 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to San Juan for $444. However, in the past 72 hours, people saw flights from St. Louis for as low as $210.

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

There are 1 cabin classes available to choose from on Lambert-St Louis to San Juan 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 St. Louis to San Juan flights?

You could potentially save up to 84% on your flight if you consider stops on a St. Louis to San Juan flight.

Cheap St. Louis to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to San Juan

Best Price Found

$64

Fastest flight time

4h 15m

Direct flights

Sun

Airports in San Juan

1 airport
The best one-way flight to San Juan from St. Louis in the past 72 hours is $64. The best round-trip flight deal from St. Louis to San Juan found on momondo in the last 72 hours is $150.
The fastest flight from St. Louis to San Juan takes 4h 15m
Direct flights go from St. Louis to San Juan on Sunday. The only airline offering direct flights is Southwest.
There is 1 airport near San Juan: San Juan Luis Munoz Marin Intl (SJU)

  • How far is Lambert-St Louis to San Juan by plane?

    There are 2005.8 mi between Lambert-St Louis and San Juan. In terms of flight time, this usually takes a little over 7h 14m.

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

    Prices for flights from Lambert-St Louis Airport to San Juan are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to San Juan.

  • What documentation or ID do you need to fly to San Juan?

    The travel and health documents you'll need for your trip to San Juan may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Juan. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.


Best airlines flying from St. Louis to San Juan

Compare and see reviews for airlines that fly from St. Louis to San Juan with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $164Free CancellationRating
6.3
8,169 reviews
Search Spirit Airlines flights
FrontierPriceFrom $168Free CancellationRating
6.1
3,536 reviews
Search Frontier flights
DeltaPriceFrom $262Free CancellationRating
8.0
8,755 reviews
Search Delta flights
United AirlinesPriceFrom $264Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
American AirlinesPriceFrom $301Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $374Free CancellationRating
8.1
5,005 reviews
Search Southwest flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to San Juan. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to San Juan.

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

Yes. momondo can track prices for St. Louis to San Juan flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan