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Cheap flights from St. Louis to San Juan from $105

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 4/27. 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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0 bags

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Find the cheapest flights from St. Louis to San Juan

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to San Juan.
Southwest Logo
4:55 pm - 11:55 pmSTL-SJU
6h 00m1 stop
Southwest Logo
4:00 pm - 8:00 pmSJU-STL
5h 00mnonstop
$205Southwest
Find Deal
Mon, May 5 - Sat, May 10
Southwest Logo
4:55 pm - 11:55 pmSTL-SJU
6h 00m1 stop
Southwest Logo
3:20 pm - 10:00 pmSJU-STL
7h 40m1 stop
$209Southwest
Find Deal
Mon, May 5 - Sat, May 10
United Airlines Logo
11:00 am - 8:38 pmSTL-SJU
8h 38m1 stop
United Airlines Logo
1:05 am - 2:47 pmSJU-STL
14h 42m2 stops
$254United Airlines
Find Deal
Wed, Apr 30 - Tue, May 6
Delta Logo
4:05 pm - 11:15 pmSTL-SJU
6h 10m1 stop
Delta Logo
1:55 pm - 9:31 pmSJU-STL
8h 36m1 stop
$261Delta
Find Deal
Mon, May 5 - Sat, May 10
Delta Logo
12:51 pm - 11:15 pmSTL-SJU
9h 24m1 stop
Delta Logo
7:15 am - 4:26 pmSJU-STL
10h 11m1 stop
$274Delta
Find Deal
Tue, Apr 29 - Tue, May 6
American Airlines Logo
6:15 am - 12:09 amSTL-SJU
16h 54m1 stop
American Airlines Logo
2:50 pm - 11:51 pmSJU-STL
10h 01m1 stop
$286American Airlines
Find Deal
Sat, May 3 - Wed, May 7
United Airlines Logo
6:30 am - 2:44 pmSTL-SJU
7h 14m1 stop
United Airlines Logo
1:05 am - 2:47 pmSJU-STL
14h 42m2 stops
$294United Airlines
Find Deal
Tue, May 6 - Tue, May 6
Frontier Logo
4:57 pm - 2:05 amSTL-SJU
8h 08m1 stop
Frontier Logo
2:20 pm - 11:46 pmSJU-STL
10h 26m1 stop
$296Frontier
Find Deal
Mon, Apr 14 - Fri, Apr 18
Frontier Logo
5:45 pm - 2:51 amSTL-SJU
8h 06m1 stop
Frontier Logo
3:56 am - 12:06 amSJU-STL
21h 10m1 stop
$298Frontier
Find Deal
Mon, May 5 - Wed, May 7
American Airlines Logo
5:31 am - 4:20 pmSTL-SJU
9h 49m1 stop
American Airlines Logo
11:55 am - 8:23 pmSJU-STL
9h 28m2 stops
$363American Airlines
Find Deal
Wed, Sep 3 - Wed, Sep 10

United Airlines flights from St. Louis to San Juan

Our best United Airlines deals on St. Louis to San Juan flight tickets
United Airlines
Apr 30
STL11:00 amLambert-St Louis
8h 38m
1 stop
SJU8:38 pmSan Juan Luis Munoz Marin Intl
May 6
SJU1:05 amSan Juan Luis Munoz Marin Intl
14h 42m
2 stops
STL2:47 pmLambert-St Louis
United Airlines
May 6
STL6:30 amLambert-St Louis
7h 14m
1 stop
SJU2:44 pmSan Juan Luis Munoz Marin Intl
May 6
SJU1:05 amSan Juan Luis Munoz Marin Intl
14h 42m
2 stops
STL2:47 pmLambert-St Louis
United Airlines
May 7
STL1:10 pmLambert-St Louis
9h 44m
1 stop
SJU11:54 pmSan Juan Luis Munoz Marin Intl
May 10
SJU7:00 amSan Juan Luis Munoz Marin Intl
9h 49m
1 stop
STL3:49 pmLambert-St Louis

Delta flights from St. Louis to San Juan

Our best Delta deals on St. Louis to San Juan flight tickets
Delta
May 5
STL4:05 pmLambert-St Louis
6h 10m
1 stop
SJU11:15 pmSan Juan Luis Munoz Marin Intl
May 10
SJU1:55 pmSan Juan Luis Munoz Marin Intl
8h 36m
1 stop
STL9:31 pmLambert-St Louis
Delta
Apr 29
STL12:51 pmLambert-St Louis
9h 24m
1 stop
SJU11:15 pmSan Juan Luis Munoz Marin Intl
May 6
SJU7:15 amSan Juan Luis Munoz Marin Intl
10h 11m
1 stop
STL4:26 pmLambert-St Louis
Delta
May 4
STL4:16 pmLambert-St Louis
5h 59m
1 stop
SJU11:15 pmSan Juan Luis Munoz Marin Intl
May 7
SJU1:55 pmSan Juan Luis Munoz Marin Intl
7h 54m
1 stop
STL8:49 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 August, then January is your next best option. Flight prices from St. Louis to San Juan during January 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 Wednesday when prices can be found for as low as $404. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around $590.

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 $310. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $645 on average. Flights to San Juan from St. Louis in the morning 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?

You are more likely to see cheaper flights to San Juan from St. Louis when booking 12 weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $443 when searching 12 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from St. Louis for as low as $370 on momondo.

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.

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

$105

Fastest flight time

4h 25m

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 $105. The best round-trip flight deal from St. Louis to San Juan found on momondo in the last 72 hours is $205.
The fastest flight from St. Louis to San Juan takes 4h 25m
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 4h 25m.

  • 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
FrontierPriceFrom $140Free CancellationRating
5.9
3,277 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $166Free CancellationRating
6.3
7,886 reviews
Search Spirit Airlines flights
DeltaPriceFrom $254Free CancellationRating
8.0
7,899 reviews
Search Delta flights
United AirlinesPriceFrom $264Free CancellationRating
7.4
8,615 reviews
Search United Airlines flights
American AirlinesPriceFrom $268Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $392Free CancellationRating
8.0
4,275 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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Mon 4/7
Mon 4/14

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