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Cheap flights from Missouri to Puerto Rico from $69

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 2/2. 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 Missouri to Puerto Rico

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:11 pm - 2:50 amSTL-SJU
7h 39m1 stop
Frontier Logo
11:05 am - 10:33 pmSJU-STL
13h 28m1 stop
$138Frontier
Find Deal
Tue, Jan 20 - Tue, Jan 27
Frontier Logo
8:45 am - 2:50 amSTL-SJU
16h 05m1 stop
Frontier Logo
3:55 am - 10:33 pmSJU-STL
20h 38m1 stop
$153Frontier
Find Deal
Fri, Jan 23 - Fri, Jan 30
American Airlines Logo
5:15 am - 1:43 pmSTL-SJU
6h 28m1 stop
American Airlines Logo
6:25 am - 8:38 pmSJU-STL
16h 13m1 stop
$225American Airlines
Find Deal
Tue, Dec 2 - Mon, Dec 8
Multiple Airlines Logo
11:51 am - 10:05 pmSTL-SJU
8h 14m1 stop
Multiple Airlines Logo
9:37 pm - 10:37 pmSJU-STL
27h 00m1 stop
$227Multiple Airlines
Find Deal
Tue, Jan 6 - Mon, Jan 12
American Airlines Logo
6:00 am - 8:50 pmSGF-SJU
12h 50m2 stops
American Airlines Logo
8:20 am - 4:14 pmSJU-SGF
9h 54m2 stops
$235American Airlines
Find Deal
Tue, Jan 27 - Fri, Jan 30
United Airlines Logo
9:57 am - 10:22 pmSTL-SJU
10h 25m2 stops
United Airlines Logo
2:05 am - 10:41 amSJU-STL
10h 36m1 stop
$248United Airlines
Find Deal
Tue, Jan 20 - Mon, Jan 26
United Airlines Logo
8:00 am - 10:22 pmMCI-SJU
12h 22m2 stops
United Airlines Logo
7:45 am - 2:10 pmSJU-MCI
8h 25m1 stop
$268United Airlines
Find Deal
Mon, Feb 23 - Thu, Feb 26
Southwest Logo
8:35 pm - 10:00 amMCI-SJU
11h 25m1 stop
Southwest Logo
6:10 am - 2:45 pmSJU-MCI
10h 35m2 stops
$274Southwest
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Fri, Feb 27 - Wed, Mar 4
Multiple Airlines Logo
8:46 pm - 9:55 amMCI-SJU
35h 09m2 stops
Multiple Airlines Logo
7:00 am - 3:33 pmSJU-MCI
10h 33m1 stop
$278Multiple Airlines
Find Deal
Sun, Feb 1 - Wed, Feb 11
Southwest Logo
8:05 pm - 5:15 pmMCI-SJU
19h 10m2 stops
Southwest Logo
5:40 am - 1:40 pmSJU-MCI
10h 00m2 stops
$342Southwest
Find Deal
Fri, Feb 27 - Wed, Mar 4

Frontier flights from Missouri to Puerto Rico

Our best Frontier deals on Missouri to Puerto Rico flight tickets
Frontier
Jan 20
STL5:11 pmLambert-St Louis
7h 39m
1 stop
SJU2:50 amSan Juan Luis Munoz Marin Intl
Jan 27
SJU11:05 amSan Juan Luis Munoz Marin Intl
13h 28m
1 stop
STL10:33 pmLambert-St Louis
$138
Find similar
Frontier
Jan 23
STL8:45 amLambert-St Louis
16h 05m
1 stop
SJU2:50 amSan Juan Luis Munoz Marin Intl
Jan 30
SJU3:55 amSan Juan Luis Munoz Marin Intl
20h 38m
1 stop
STL10:33 pmLambert-St Louis
$153
Find similar
Frontier
Dec 4
STL3:30 pmLambert-St Louis
9h 20m
1 stop
SJU2:50 amSan Juan Luis Munoz Marin Intl
Dec 8
SJU11:05 amSan Juan Luis Munoz Marin Intl
13h 28m
1 stop
STL10:33 pmLambert-St Louis
$168
Find similar

American Airlines flights from Missouri to Puerto Rico

Our best American Airlines deals on Missouri to Puerto Rico flight tickets
American Airlines
Dec 2
STL5:15 amLambert-St Louis
6h 28m
1 stop
SJU1:43 pmSan Juan Luis Munoz Marin Intl
Dec 8
SJU6:25 amSan Juan Luis Munoz Marin Intl
16h 13m
1 stop
STL8:38 pmLambert-St Louis
$225
Find similar
American Airlines
Jan 27
SGF6:00 amSpringfield-Branson
12h 50m
2 stops
SJU8:50 pmSan Juan Luis Munoz Marin Intl
Jan 30
SJU8:20 amSan Juan Luis Munoz Marin Intl
9h 54m
2 stops
SGF4:14 pmSpringfield-Branson
$235
Find similar
American Airlines
Apr 28
SGF8:15 pmSpringfield-Branson
6h 45m
1 stop
SJU4:00 amSan Juan Luis Munoz Marin Intl
May 5
SJU8:30 amSan Juan Luis Munoz Marin Intl
10h 18m
1 stop
SGF5:48 pmSpringfield-Branson
$268
Find similar

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 November 10, 2025.
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

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 1/20

5:11 pm-2:50 am

1 stop7h 39m

San Juan Luis Munoz Marin Intl

Tue 1/27

11:05 am-10:33 pm

1 stop13h 28m

$138

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 1/23

8:45 am-2:50 am

1 stop16h 05m

San Juan Luis Munoz Marin Intl

Fri 1/30

3:55 am-10:33 pm

1 stop20h 38m

$153

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 12/2

5:15 am-1:43 pm

1 stop6h 28m

San Juan Luis Munoz Marin Intl

Mon 12/8

6:25 am-8:38 pm

1 stop16h 13m

$225

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 1/6

11:51 am-10:05 pm

1 stop8h 14m

San Juan Luis Munoz Marin Intl

Mon 1/12

9:37 pm-10:37 pm

1 stop27h 00m

$227

SpringfieldSan Juan

SGF - SJU

SGFSJU

Springfield-Branson

Tue 1/27

6:00 am-8:50 pm

2 stops12h 50m

San Juan Luis Munoz Marin Intl

Fri 1/30

8:20 am-4:14 pm

2 stops9h 54m

$235

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 1/20

9:57 am-10:22 pm

2 stops10h 25m

San Juan Luis Munoz Marin Intl

Mon 1/26

2:05 am-10:41 am

1 stop10h 36m

$248

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Mon 2/23

8:00 am-10:22 pm

2 stops12h 22m

San Juan Luis Munoz Marin Intl

Thu 2/26

7:45 am-2:10 pm

1 stop8h 25m

$268

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Fri 2/27

8:35 pm-10:00 am

1 stop11h 25m

San Juan Luis Munoz Marin Intl

Wed 3/4

6:10 am-2:45 pm

2 stops10h 35m

$274

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Sun 2/1

8:46 pm-9:55 am

2 stops35h 09m

San Juan Luis Munoz Marin Intl

Wed 2/11

7:00 am-3:33 pm

1 stop10h 33m

$278

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Fri 2/27

8:05 pm-5:15 pm

2 stops19h 10m

San Juan Luis Munoz Marin Intl

Wed 3/4

5:40 am-1:40 pm

2 stops10h 00m

$342

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 September, then you should wait until April to fly from Missouri, when ticket prices are also cheap, with an average price of $371.

What is the cheapest day to depart on your flight to Puerto Rico?

On average, the least expensive day to fly to Puerto Rico from Missouri is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $404. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Puerto Rico is Saturday, with ticket prices averaging around $646.

What is the cheapest time of day to depart on your flight to Puerto Rico?

Our most recent data shows that the best time of day to fly to Puerto Rico is in the evening. Flights from Missouri to Puerto Rico during this time can be as low as $310. In contrast, the most expensive time of day to depart to Puerto Rico is at noon when prices are around $660.

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 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 $447 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 $314 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 38% 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 15m

Direct flights

Sun

Airports in Puerto Rico

1 airport
The fastest flight from Missouri to Puerto Rico takes 4h 15m
Direct flights go from Missouri to Puerto Rico on Sunday. There are no airlines offering direct flights.
There is 1 airport near Puerto Rico: San Juan Luis Munoz Marin Intl (SJU)
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  • 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
FrontierPriceFrom $140Free CancellationRating
5.8
3,111 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $170Free CancellationRating
6.3
8,131 reviews
Search Spirit Airlines flights
DeltaPriceFrom $206Free CancellationRating
7.9
8,004 reviews
Search Delta flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
9,011 reviews
Search United Airlines flights
SouthwestPriceFrom $219Free CancellationRating
8.0
4,238 reviews
Search Southwest flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,047 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.
Start using Trips
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