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Cheap flights from Missouri to Puerto Rico from $100

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 3/10. 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
4:55 pm - 2:01 am
STL
-
SJU
8h 06m
1 stop
Frontier Logo
3:19 pm - 11:19 pm
SJU
-
STL
9h 00m
1 stop
$202Frontier
Sat, May 9 - Wed, May 13
Delta Logo
6:00 am - 4:18 pm
STL
-
SJU
9h 18m
1 stop
Delta Logo
5:34 pm - 11:36 pm
SJU
-
STL
7h 02m
1 stop
$216Delta
Wed, Apr 8 - Fri, Apr 24
United Airlines Logo
11:23 am - 8:34 pm
SGF
-
SJU
8h 11m
1 stop
United Airlines Logo
1:00 am - 10:48 am
SJU
-
SGF
10h 48m
2 stops
$266United Airlines
Sat, Apr 25 - Tue, Apr 28
American Airlines Logo
5:30 am - 2:42 pm
MCI
-
SJU
8h 12m
1 stop
American Airlines Logo
11:59 pm - 8:54 am
SJU
-
MCI
9h 55m
1 stop
$266American Airlines
Tue, May 5 - Sat, May 9
United Airlines Logo
9:45 am - 9:24 pm
MCI
-
SJU
10h 39m
2 stops
United Airlines Logo
1:00 am - 11:25 am
SJU
-
MCI
11h 25m
1 stop
$270United Airlines
Tue, May 5 - Fri, May 8
American Airlines Logo
5:52 pm - 9:13 am
MCI
-
SJU
14h 21m
1 stop
American Airlines Logo
1:31 pm - 10:21 pm
SJU
-
MCI
9h 50m
1 stop
$277American Airlines
Wed, May 6 - Wed, May 13
Spirit Airlines Logo
12:24 pm - 11:49 am
MCI
-
SJU
22h 25m
1 stop
Spirit Airlines Logo
6:15 am - 11:09 am
SJU
-
MCI
29h 54m
1 stop
$293Spirit Airlines
Wed, Apr 8 - Wed, Apr 15
Spirit Airlines Logo
5:45 am - 9:59 pm
MCI
-
SJU
15h 14m
1 stop
Spirit Airlines Logo
7:54 pm - 11:29 am
SJU
-
MCI
16h 35m
1 stop
$296Spirit Airlines
Wed, Mar 18 - Tue, Mar 24
Multiple Airlines Logo
12:24 pm - 1:42 am
MCI
-
BQN
12h 18m
2 stops
Multiple Airlines Logo
2:42 am - 11:53 pm
BQN
-
MCI
22h 11m
1 stop
$394Multiple Airlines
Wed, Mar 25 - Mon, Mar 30
Multiple Airlines Logo
5:45 am - 1:42 am
MCI
-
BQN
18h 57m
1 stop
Multiple Airlines Logo
2:42 am - 11:53 pm
BQN
-
MCI
22h 11m
1 stop
$398Multiple Airlines
Wed, Mar 25 - Mon, Mar 30

Frontier flights from Missouri to Puerto Rico

Our best Frontier deals on Missouri to Puerto Rico flight tickets
Frontier
May 9
STL4:55 pmLambert-St Louis
8h 06m
1 stop
SJU2:01 amSan Juan Luis Munoz Marin Intl
May 13
SJU3:19 pmSan Juan Luis Munoz Marin Intl
9h 00m
1 stop
STL11:19 pmLambert-St Louis
$202
Frontier
Mar 30
STL4:51 pmLambert-St Louis
8h 07m
1 stop
SJU1:58 amSan Juan Luis Munoz Marin Intl
Apr 10
SJU9:10 pmSan Juan Luis Munoz Marin Intl
11h 41m
1 stop
STL7:51 amLambert-St Louis
$221
Frontier
Mar 4
STL3:49 pmLambert-St Louis
9h 04m
1 stop
SJU2:53 amSan Juan Luis Munoz Marin Intl
Mar 11
SJU6:30 amSan Juan Luis Munoz Marin Intl
25h 47m
1 stop
STL7:17 amLambert-St Louis
$223

Delta flights from Missouri to Puerto Rico

Our best Delta deals on Missouri to Puerto Rico flight tickets
Delta
Apr 8
STL6:00 amLambert-St Louis
9h 18m
1 stop
SJU4:18 pmSan Juan Luis Munoz Marin Intl
Apr 24
SJU5:34 pmSan Juan Luis Munoz Marin Intl
7h 02m
1 stop
STL11:36 pmLambert-St Louis
$216
Delta
Mar 31
STL6:00 amLambert-St Louis
9h 18m
1 stop
SJU4:18 pmSan Juan Luis Munoz Marin Intl
Apr 7
SJU5:30 pmSan Juan Luis Munoz Marin Intl
7h 28m
1 stop
STL11:58 pmLambert-St Louis
$236
Delta
Apr 15
STL1:03 pmLambert-St Louis
6h 21m
1 stop
SJU8:24 pmSan Juan Luis Munoz Marin Intl
Apr 21
SJU6:15 amSan Juan Luis Munoz Marin Intl
6h 41m
1 stop
STL11:56 amLambert-St Louis
$256

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 February 28, 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

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 5/9

4:55 pm-2:01 am

1 stop8h 06m

San Juan Luis Munoz Marin Intl

Wed 5/13

3:19 pm-11:19 pm

1 stop9h 00m

$202

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 4/8

6:00 am-4:18 pm

1 stop9h 18m

San Juan Luis Munoz Marin Intl

Fri 4/24

5:34 pm-11:36 pm

1 stop7h 02m

$216

SpringfieldSan Juan

SGF - SJU

SGFSJU

Springfield-Branson

Sat 4/25

11:23 am-8:34 pm

1 stop8h 11m

San Juan Luis Munoz Marin Intl

Tue 4/28

1:00 am-10:48 am

2 stops10h 48m

$266

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Tue 5/5

5:30 am-2:42 pm

1 stop8h 12m

San Juan Luis Munoz Marin Intl

Sat 5/9

11:59 pm-8:54 am

1 stop9h 55m

$266

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Tue 5/5

9:45 am-9:24 pm

2 stops10h 39m

San Juan Luis Munoz Marin Intl

Fri 5/8

1:00 am-11:25 am

1 stop11h 25m

$270

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Wed 5/6

5:52 pm-9:13 am

1 stop14h 21m

San Juan Luis Munoz Marin Intl

Wed 5/13

1:31 pm-10:21 pm

1 stop9h 50m

$277

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Wed 4/8

12:24 pm-11:49 am

1 stop22h 25m

San Juan Luis Munoz Marin Intl

Wed 4/15

6:15 am-11:09 am

1 stop29h 54m

$293

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Wed 3/18

5:45 am-9:59 pm

1 stop15h 14m

San Juan Luis Munoz Marin Intl

Tue 3/24

7:54 pm-11:29 am

1 stop16h 35m

$296

Kansas CityAguadilla

MCI - BQN

MCIBQN

Kansas City

Wed 3/25

12:24 pm-1:42 am

2 stops12h 18m

Aguadilla Borinquen

Mon 3/30

2:42 am-11:53 pm

1 stop22h 11m

$394

Kansas CityAguadilla

MCI - BQN

MCIBQN

Kansas City

Wed 3/25

5:45 am-1:42 am

1 stop18h 57m

Aguadilla Borinquen

Mon 3/30

2:42 am-11:53 pm

1 stop22h 11m

$398

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 $359.

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 $646. In contrast, the most expensive time of day to depart to Puerto Rico is at noon when prices are around $710.

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 $436 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 $316 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 53% 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

6h 12m

Direct flights

Sun

Airports in Puerto Rico

20 airports
The fastest flight from Missouri to Puerto Rico takes 6h 12m
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
DeltaPriceFrom $128Free CancellationRating
7.9
8,245 reviews
Search Delta flights
FrontierPriceFrom $137Free CancellationRating
5.7
3,041 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $146Free CancellationRating
6.3
8,492 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
9,362 reviews
Search United Airlines flights
SouthwestPriceFrom $219Free CancellationRating
8.0
4,303 reviews
Search Southwest flights
American AirlinesPriceFrom $235Free CancellationRating
7.1
11,367 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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Find better results for your trip to Puerto Rico

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