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Cheap flights from Missouri to Puerto Rico from $90

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Puerto Rico departing on 8/25. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from Missouri to Puerto Rico

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:00 am - 10:24 pm
STL
-
SJU
15h 24m
1 stop
American Airlines Logo
3:44 pm - 9:24 am
SJU
-
STL
18h 40m
1 stop
$252American Airlines
Fri, Aug 21 - Tue, Aug 25
American Airlines Logo
8:34 am - 11:59 pm
STL
-
SJU
14h 25m
1 stop
American Airlines Logo
2:58 pm - 10:42 pm
SJU
-
STL
8h 44m
2 stops
$257American Airlines
Wed, Sep 2 - Wed, Sep 9
United Airlines Logo
8:00 am - 8:38 pm
STL
-
SJU
11h 38m
2 stops
United Airlines Logo
1:00 am - 12:02 pm
SJU
-
STL
12h 02m
2 stops
$316United Airlines
Tue, Sep 1 - Sat, Sep 12
American Airlines Logo
5:13 pm - 9:24 am
STL
-
SJU
15h 11m
2 stops
American Airlines Logo
11:51 am - 12:27 am
SJU
-
STL
13h 36m
2 stops
$324American Airlines
Fri, Sep 18 - Wed, Sep 23
United Airlines Logo
10:00 am - 11:09 pm
MCI
-
BQN
12h 09m
2 stops
United Airlines Logo
12:15 am - 2:07 pm
BQN
-
MCI
14h 52m
2 stops
$326United Airlines
Tue, Aug 11 - Mon, Aug 17
Delta Logo
7:00 am - 4:38 pm
STL
-
SJU
8h 38m
1 stop
Delta Logo
7:30 am - 2:38 pm
SJU
-
STL
8h 08m
1 stop
$326Delta
Mon, Sep 7 - Thu, Sep 10
American Airlines Logo
7:35 am - 10:24 pm
MCI
-
SJU
13h 49m
1 stop
American Airlines Logo
7:00 am - 3:52 pm
SJU
-
MCI
9h 52m
1 stop
$326American Airlines
Thu, Aug 20 - Tue, Aug 25
Southwest Logo
2:25 pm - 10:15 pm
STL
-
SJU
6h 50m
1 stop
Southwest Logo
5:55 pm - 11:25 pm
SJU
-
STL
6h 30m
1 stop
$336Southwest
Fri, Sep 18 - Sun, Sep 20
Frontier Logo
6:07 pm - 2:16 pm
MCI
-
SJU
19h 09m
1 stop
Frontier Logo
6:11 pm - 5:24 pm
SJU
-
MCI
24h 13m
2 stops
$372Frontier
Fri, Aug 14 - Tue, Aug 25
Delta Logo
11:38 am - 10:29 pm
SGF
-
SJU
9h 51m
1 stop
Delta Logo
12:56 pm - 10:21 pm
SJU
-
SGF
10h 25m
1 stop
$393Delta
Tue, Aug 18 - Mon, Aug 24

American Airlines flights from Missouri to Puerto Rico

Our best American Airlines deals on Missouri to Puerto Rico flight tickets
American Airlines
Aug 21
STL6:00 amLambert-St Louis
15h 24m
1 stop
SJU10:24 pmSan Juan Luis Munoz Marin Intl
Aug 25
SJU3:44 pmSan Juan Luis Munoz Marin Intl
18h 40m
1 stop
STL9:24 amLambert-St Louis
$252
American Airlines
Aug 21
STL5:42 amLambert-St Louis
8h 12m
1 stop
SJU2:54 pmSan Juan Luis Munoz Marin Intl
Aug 25
SJU3:47 pmSan Juan Luis Munoz Marin Intl
9h 27m
2 stops
STL12:14 amLambert-St Louis
$324
American Airlines
Aug 20
MCI6:00 amKansas City
15h 24m
1 stop
SJU10:24 pmSan Juan Luis Munoz Marin Intl
Aug 25
SJU6:00 amSan Juan Luis Munoz Marin Intl
11h 29m
2 stops
MCI4:29 pmKansas City
$326

Southwest flights from Missouri to Puerto Rico

Our best Southwest deals on Missouri to Puerto Rico flight tickets
Southwest
Aug 8
STL6:45 amLambert-St Louis
14h 10m
1 stop
SJU9:55 pmSan Juan Luis Munoz Marin Intl
Aug 15
SJU5:05 amSan Juan Luis Munoz Marin Intl
8h 30m
2 stops
STL12:35 pmLambert-St Louis
$373
Southwest
Jun 28
STL4:20 pmLambert-St Louis
7h 05m
1 stop
SJU12:25 amSan Juan Luis Munoz Marin Intl
Jul 2
SJU6:30 amSan Juan Luis Munoz Marin Intl
7h 15m
1 stop
STL12:45 pmLambert-St Louis
$401
Southwest
Jul 25
STL2:30 pmLambert-St Louis
8h 15m
1 stop
SJU11:45 pmSan Juan Luis Munoz Marin Intl
Jul 30
SJU6:00 amSan Juan Luis Munoz Marin Intl
7h 40m
1 stop
STL12:40 pmLambert-St Louis
$410

momondo Fare Finder

 
Customize your flight search to find flights from Missouri to Puerto Rico 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 June 4, 2026.
Use the filters below to find and compare flights from Missouri to Puerto Rico that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 8/21

6:00 am-10:24 pm

1 stop15h 24m

San Juan Luis Munoz Marin Intl

Tue 8/25

3:44 pm-9:24 am

1 stop18h 40m

$252

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 9/2

8:34 am-11:59 pm

1 stop14h 25m

San Juan Luis Munoz Marin Intl

Wed 9/9

2:58 pm-10:42 pm

2 stops8h 44m

$257

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 9/1

8:00 am-8:38 pm

2 stops11h 38m

San Juan Luis Munoz Marin Intl

Sat 9/12

1:00 am-12:02 pm

2 stops12h 02m

$316

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 9/18

5:13 pm-9:24 am

2 stops15h 11m

San Juan Luis Munoz Marin Intl

Wed 9/23

11:51 am-12:27 am

2 stops13h 36m

$324

Kansas CityAguadilla

MCI - BQN

MCIBQN

Kansas City

Tue 8/11

10:00 am-11:09 pm

2 stops12h 09m

Aguadilla Borinquen

Mon 8/17

12:15 am-2:07 pm

2 stops14h 52m

$326

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 9/7

7:00 am-4:38 pm

1 stop8h 38m

San Juan Luis Munoz Marin Intl

Thu 9/10

7:30 am-2:38 pm

1 stop8h 08m

$326

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Thu 8/20

7:35 am-10:24 pm

1 stop13h 49m

San Juan Luis Munoz Marin Intl

Tue 8/25

7:00 am-3:52 pm

1 stop9h 52m

$326
Quickest round-trip

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 9/18

2:25 pm-10:15 pm

1 stop6h 50m

San Juan Luis Munoz Marin Intl

Sun 9/20

5:55 pm-11:25 pm

1 stop6h 30m

$336

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Fri 8/14

6:07 pm-2:16 pm

1 stop19h 09m

San Juan Luis Munoz Marin Intl

Tue 8/25

6:11 pm-5:24 pm

2 stops24h 13m

$372

SpringfieldSan Juan

SGF - SJU

SGFSJU

Springfield-Branson

Tue 8/18

11:38 am-10:29 pm

1 stop9h 51m

San Juan Luis Munoz Marin Intl

Mon 8/24

12:56 pm-10:21 pm

1 stop10h 25m

$393

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Puerto Rico from

How to get the cheapest flight ticket from Missouri to Puerto Rico

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 Puerto Rico?

If you don’t want to visit Puerto Rico in July, then you should wait until September to fly from Missouri, when ticket prices are also cheap, with an average price of $108.

What is the cheapest Missouri to Puerto Rico flight route?

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

How far in advance should I book a flight from Missouri to Puerto Rico?

You are more likely to see cheaper flights to Puerto Rico from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Puerto Rico for around $424 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Puerto Rico from Missouri for as low as $346 on momondo.

What cabin class options are available on Missouri to Puerto Rico flights?

There is only 1 cabin class available to choose from on Missouri to Puerto Rico 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 Missouri to Puerto Rico flights?

You could potentially save up to 5% on your flight if you consider stops on a Missouri to Puerto Rico flight.

Cheap Missouri to Puerto Rico flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Puerto Rico

Fastest flight time

4h 20m

Direct flights

Sun

Airports in Puerto Rico

20 airports
The fastest flight from Missouri to Puerto Rico takes 4h 20m
Direct flights go from Missouri to Puerto Rico on Sunday. There are no airlines offering direct flights.
There are 20 airports in Puerto Rico. From Missouri there are direct flights to San Juan Luis Munoz Marin Intl (SJU).
Search flight deals

Frequently asked questions about flying from Missouri to Puerto Rico

  • When did momondo last update prices for flights from Missouri to Puerto Rico?

    Prices for flights from Missouri to Puerto Rico were last updated today.

  • How many operators does momondo search for flights from Missouri to Puerto Rico?

  • How old do you have to be to fly from Missouri to Puerto Rico?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Puerto Rico.

  • What documentation or ID do you need to fly to Puerto Rico?

    The travel and health documents required for your trip to Puerto Rico 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 Puerto Rico. 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 Missouri to Puerto Rico?

Best airlines flying from Missouri to Puerto Rico

Compare and see reviews for airlines that fly from Missouri to Puerto Rico with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $128Free CancellationRating
7.8
8,395 reviews
Search Delta flights
FrontierPriceFrom $138Free CancellationRating
5.6
2,914 reviews
Search Frontier flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
9,773 reviews
Search United Airlines flights
SouthwestPriceFrom $220Free CancellationRating
8.0
4,256 reviews
Search Southwest flights
American AirlinesPriceFrom $235Free CancellationRating
7.1
11,641 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Puerto Rico?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Missouri to Puerto Rico for you.

Can I find flights from Missouri to Puerto Rico with flexible booking policies on momondo?

momondo does allow users to show only those flights to Puerto Rico from Missouri which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Missouri to Puerto Rico?

Once all potential Missouri to Puerto Rico 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 Missouri to Puerto Rico right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Puerto Rico, momondo offers a useful price alert feature which will track prices for flights to Puerto Rico from Missouri and alert you when they change.

An easier way to manage your Puerto Rico 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.
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