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Cheap flights from Missouri to Puerto Rico from $86

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 1/24. 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

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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.
United Airlines Logo
10:07 am - 9:26 pm
STL
-
SJU
9h 19m1 stop
United Airlines Logo
2:15 pm - 10:58 pm
SJU
-
STL
10h 43m2 stops
$225United Airlines
Wed, Jan 21 - Wed, Jan 28
Frontier Logo
12:12 pm - 11:59 pm
STL
-
SJU
9h 47m1 stop
Frontier Logo
7:54 pm - 11:59 pm
SJU
-
STL
30h 05m1 stop
$227Frontier
Sat, Feb 7 - Sat, Feb 14
American Airlines Logo
7:55 pm - 2:13 pm
MCI
-
SJU
17h 18m1 stop
American Airlines Logo
1:30 am - 8:59 am
SJU
-
MCI
8h 29m1 stop
$230American Airlines
Mon, Mar 9 - Tue, Mar 10
Frontier Logo
5:42 pm - 10:24 am
STL
-
SJU
14h 42m1 stop
Frontier Logo
8:00 am - 11:33 pm
SJU
-
STL
17h 33m1 stop
$232Frontier
Thu, Feb 5 - Mon, Feb 9
Delta Logo
8:05 am - 8:58 pm
MCI
-
SJU
10h 53m1 stop
Delta Logo
7:30 am - 4:04 pm
SJU
-
MCI
10h 34m1 stop
$235Delta
Tue, Jan 27 - Tue, Feb 3
American Airlines Logo
10:50 am - 9:39 pm
MCI
-
SJU
8h 49m1 stop
American Airlines Logo
5:51 pm - 11:59 pm
SJU
-
MCI
8h 08m1 stop
$236American Airlines
Sat, Jan 24 - Wed, Feb 4
Multiple Airlines Logo
5:42 pm - 5:50 pm
STL
-
SJU
22h 08m2 stops
Multiple Airlines Logo
8:05 pm - 11:33 pm
SJU
-
STL
29h 28m1 stop
$241Multiple Airlines
Fri, Jan 30 - Mon, Feb 2
Multiple Airlines Logo
8:17 pm - 6:58 pm
STL
-
SJU
20h 41m2 stops
Multiple Airlines Logo
8:05 pm - 10:27 pm
SJU
-
STL
28h 22m1 stop
$244Multiple Airlines
Wed, Feb 25 - Mon, Mar 2
Delta Logo
6:00 am - 5:17 pm
SGF
-
SJU
9h 17m1 stop
Delta Logo
7:30 am - 4:15 pm
SJU
-
SGF
10h 45m1 stop
$255Delta
Tue, Jan 27 - Fri, Jan 30
Spirit Airlines Logo
5:04 pm - 9:47 am
MCI
-
SJU
14h 43m1 stop
Spirit Airlines Logo
6:00 am - 4:09 pm
SJU
-
MCI
12h 09m1 stop
$259Spirit Airlines
Tue, Jan 27 - Tue, Feb 3

United Airlines flights from Missouri to Puerto Rico

Our best United Airlines deals on Missouri to Puerto Rico flight tickets
United Airlines
Jan 21
STL10:07 amLambert-St Louis
9h 19m
1 stop
SJU9:26 pmSan Juan Luis Munoz Marin Intl
Jan 28
SJU2:15 pmSan Juan Luis Munoz Marin Intl
10h 43m
2 stops
STL10:58 pmLambert-St Louis
$225
Find similar
United Airlines
Jan 27
SGF8:50 amSpringfield-Branson
10h 36m
1 stop
SJU9:26 pmSan Juan Luis Munoz Marin Intl
Jan 30
SJU7:45 amSan Juan Luis Munoz Marin Intl
8h 13m
1 stop
SGF1:58 pmSpringfield-Branson
$235
Find similar
United Airlines
May 12
MCI6:16 amKansas City
8h 26m
1 stop
SJU3:42 pmSan Juan Luis Munoz Marin Intl
May 18
SJU1:00 amSan Juan Luis Munoz Marin Intl
10h 33m
2 stops
MCI10:33 amKansas City
$255
Find similar

American Airlines flights from Missouri to Puerto Rico

Our best American Airlines deals on Missouri to Puerto Rico flight tickets
American Airlines
Mar 9
MCI7:55 pmKansas City
17h 18m
1 stop
SJU2:13 pmSan Juan Luis Munoz Marin Intl
Mar 10
SJU1:30 amSan Juan Luis Munoz Marin Intl
8h 29m
1 stop
MCI8:59 amKansas City
$230
Find similar
American Airlines
Jan 24
MCI10:50 amKansas City
8h 49m
1 stop
SJU9:39 pmSan Juan Luis Munoz Marin Intl
Feb 4
SJU5:51 pmSan Juan Luis Munoz Marin Intl
8h 08m
1 stop
MCI11:59 pmKansas City
$236
Find similar
American Airlines
Jan 18
STL9:54 amLambert-St Louis
8h 56m
2 stops
SJU8:50 pmSan Juan Luis Munoz Marin Intl
Jan 24
SJU4:38 pmSan Juan Luis Munoz Marin Intl
8h 06m
1 stop
STL10:44 pmLambert-St Louis
$250
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 December 28, 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

Wed 1/21

10:07 am-9:26 pm

1 stop9h 19m

San Juan Luis Munoz Marin Intl

Wed 1/28

2:15 pm-10:58 pm

2 stops10h 43m

$225

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 2/7

12:12 pm-11:59 pm

1 stop9h 47m

San Juan Luis Munoz Marin Intl

Sat 2/14

7:54 pm-11:59 pm

1 stop30h 05m

$227

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Mon 3/9

7:55 pm-2:13 pm

1 stop17h 18m

San Juan Luis Munoz Marin Intl

Tue 3/10

1:30 am-8:59 am

1 stop8h 29m

$230

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Thu 2/5

5:42 pm-10:24 am

1 stop14h 42m

San Juan Luis Munoz Marin Intl

Mon 2/9

8:00 am-11:33 pm

1 stop17h 33m

$232

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Tue 1/27

8:05 am-8:58 pm

1 stop10h 53m

San Juan Luis Munoz Marin Intl

Tue 2/3

7:30 am-4:04 pm

1 stop10h 34m

$235

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Sat 1/24

10:50 am-9:39 pm

1 stop8h 49m

San Juan Luis Munoz Marin Intl

Wed 2/4

5:51 pm-11:59 pm

1 stop8h 08m

$236

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 1/30

5:42 pm-5:50 pm

2 stops22h 08m

San Juan Luis Munoz Marin Intl

Mon 2/2

8:05 pm-11:33 pm

1 stop29h 28m

$241

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 2/25

8:17 pm-6:58 pm

2 stops20h 41m

San Juan Luis Munoz Marin Intl

Mon 3/2

8:05 pm-10:27 pm

1 stop28h 22m

$244

SpringfieldSan Juan

SGF - SJU

SGFSJU

Springfield-Branson

Tue 1/27

6:00 am-5:17 pm

1 stop9h 17m

San Juan Luis Munoz Marin Intl

Fri 1/30

7:30 am-4:15 pm

1 stop10h 45m

$255

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Tue 1/27

5:04 pm-9:47 am

1 stop14h 43m

San Juan Luis Munoz Marin Intl

Tue 2/3

6:00 am-4:09 pm

1 stop12h 09m

$259

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 $368.

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 $660.

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 morning. Flights from Missouri to Puerto Rico during this time can be as low as $660. 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 $445 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 $347 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 25m

Direct flights

Sun

Airports in Puerto Rico

20 airports
The fastest flight from Missouri to Puerto Rico takes 4h 25m
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

  • 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
5.7
3,064 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $170Free CancellationRating
6.3
8,210 reviews
Search Spirit Airlines flights
DeltaPriceFrom $205Free CancellationRating
7.9
8,017 reviews
Search Delta flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
SouthwestPriceFrom $219Free CancellationRating
8.0
4,256 reviews
Search Southwest flights
American AirlinesPriceFrom $235Free CancellationRating
7.2
11,070 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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Tue 1/27
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Find better results for your trip to Puerto Rico

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