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Puerto Rico

$87+ Cheap flights from Missouri to Puerto Rico

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Missouri to Puerto Rico

Cheapest flights from Missouri to Puerto Rico
Explore the most affordable flight options available from Missouri to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This Frontier deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:49 pm
STL
-
SJU
1 stop9h 04m
Frontier
Tue 3/35:25 pm
SJU
-
STL
1 stop7h 02m
Frontier
Deal found 1/20$178
This CheapOair deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/55:42 pm
STL
-
SJU
1 stop14h 42m
Frontier
Mon 2/93:53 am
SJU
-
STL
1 stop20h 34m
Frontier
Deal found 1/19$179
This CheapOair deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:49 pm
STL
-
SJU
1 stop9h 04m
Frontier
Sun 3/83:08 am
SJU
-
STL
1 stop21h 11m
Frontier
Deal found 1/20$198
This CheapOair deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/210:16 am
STL
-
SJU
1 stop11h 43m
Frontier
Sat 2/78:00 am
SJU
-
STL
1 stop26h 04m
Frontier
Deal found 1/21$203
This CheapOair deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/55:42 pm
STL
-
SJU
1 stop14h 42m
Frontier
Mon 2/94:36 pm
SJU
-
STL
1 stop8h 57m
Frontier
Deal found 1/20$204
This CheapOair deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/314:51 pm
STL
-
SJU
1 stop17h 02m
Frontier
Tue 4/76:30 am
SJU
-
STL
1 stop17h 55m
Frontier
Deal found 1/20$209
This CheapOair deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/163:49 pm
STL
-
SJU
1 stop16h 05m
Frontier
Thu 2/194:25 pm
SJU
-
STL
1 stop9h 34m
Frontier
Deal found 1/20$211
This Kiwi.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/305:42 pm
STL
-
SJU
1 stop14h 05m
Multiple Airlines
Tue 2/108:05 pm
SJU
-
STL
1 stop28h 22m
Multiple Airlines
Deal found 1/20$213
This CheapOair deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/65:42 pm
STL
-
SJU
1 stop19h 44m
Frontier
Sat 2/141:52 pm
SJU
-
STL
1 stop12h 07m
Frontier
Deal found 1/20$217
This CheapOair deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/285:42 pm
STL
-
SJU
1 stop28h 17m
Frontier
Sat 1/314:36 pm
SJU
-
STL
1 stop17h 48m
Frontier
Deal found 1/21$224
This Kiwi.com deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/143:49 pm
STL
-
SJU
1 stop16h 28m
Multiple Airlines
Sat 2/215:20 am
SJU
-
STL
1 stop20h 39m
Multiple Airlines
Deal found 1/19$225
This Super.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/184:24 pm
MCI
-
SJU
1 stop15h 53m
Spirit Airlines
Wed 2/256:00 am
SJU
-
MCI
1 stop11h 29m
Spirit Airlines
Deal found 1/20$255

Find flight deals from Missouri to Puerto Rico

Keep the following information in mind while searching for Missouri to Puerto Rico flight deals. Data was last updated January 21, 2026.

Round-trip from

$178
(Frontier)

One-way from

$87
(Priceline)

Popular in

December

Cheapest in

September

Average price

$438
From Missouri to Puerto Rico
Search Deals
One-way flight from Missouri to Puerto Rico
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($78 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
Use the filters below to find and compare flights from Missouri to Puerto Rico that are best for you.

Fly from

Missouri

Fly to

Puerto Rico

Route

Depart

Return

Price

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Thu 4/9

11:21 am-12:52 am

1 stop12h 31m

San Juan Luis Munoz Marin Intl

Mon 4/13

9:10 pm-11:19 pm

1 stop27h 09m

$182

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 2/27

3:49 pm-2:53 am

1 stop9h 04m

San Juan Luis Munoz Marin Intl

Tue 3/3

5:25 pm-10:27 pm

1 stop7h 02m

$237

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 2/27

8:22 pm-7:43 pm

2 stops21h 21m

San Juan Luis Munoz Marin Intl

Tue 3/3

8:05 pm-10:27 pm

1 stop28h 22m

$246

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Sat 2/21

4:05 pm-12:40 am

1 stop6h 35m

San Juan Luis Munoz Marin Intl

Wed 2/25

5:40 am-1:40 pm

2 stops10h 00m

$256

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Mon 2/23

5:35 am-5:27 pm

1 stop9h 52m

San Juan Luis Munoz Marin Intl

Thu 2/26

7:30 am-3:59 pm

1 stop10h 29m

$256

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Thu 2/19

10:24 am-10:22 pm

2 stops9h 58m

San Juan Luis Munoz Marin Intl

Thu 2/26

3:46 pm-10:40 pm

1 stop8h 54m

$256

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Mon 2/23

6:30 am-6:11 pm

2 stops9h 41m

San Juan Luis Munoz Marin Intl

Thu 2/26

4:10 pm-11:58 pm

1 stop9h 48m

$256

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 2/10

3:49 pm-12:43 am

1 stop6h 54m

San Juan Luis Munoz Marin Intl

Fri 2/20

3:53 am-8:56 am

1 stop7h 03m

$263

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 3/7

4:51 pm-3:58 am

1 stop9h 07m

San Juan Luis Munoz Marin Intl

Thu 3/12

12:07 pm-7:22 am

1 stop20h 15m

$280

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 4/15

6:00 am-6:06 pm

2 stops11h 06m

San Juan Luis Munoz Marin Intl

Wed 4/22

6:56 pm-10:16 am

1 stop16h 20m

$286

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 60 results
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Best time to book a flight from Missouri to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Missouri with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Puerto Rico

What is the cheapest month to book a flight from Missouri to Puerto Rico?

Currently, February is the cheapest month in which you can book a flight from Missouri to Puerto Rico (average of $128). Flying from Missouri to Puerto Rico in August is currently the most expensive (average of $227). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MO to PR?

Find hourly flight availability from Missouri to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2026.

When flying from Missouri to Puerto Rico, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Missouri to Puerto Rico?

    There are many flights that can get you from Missouri to Puerto Rico in 6h 35m. Fly via Frontier, Southwest, or Delta to get the fastest option. There are 2238 mi between Missouri and Puerto Rico. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Missouri to Puerto Rico one-way?

    $84 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and Southwest, with prices starting from $108 and $110, respectively.

  • Can I find deals for flights from Missouri to Puerto Rico that include hotel bookings?

    Yes. In addition to deals on Missouri to Puerto Rico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missouri to Puerto Rico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Puerto Rico.

  • Can I find deals for business class flights from Missouri to Puerto Rico?

    Yes. Cheapflights offers flight deals from Missouri to Puerto Rico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Missouri to Puerto Rico?

    Currently, February is the cheapest month in which you can book a flight from Missouri to Puerto Rico (average of $128). Flying from Missouri to Puerto Rico in August is currently the most expensive (average of $227). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Missouri to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Luis Munoz Marin Intl flights
Newark to Luis Munoz Marin Intl flights
LaGuardia to Luis Munoz Marin Intl flights
John F Kennedy Intl to Santiago de los Caballeros flights
Dulles Intl to Luis Munoz Marin Intl flights
Newark to Punta Cana flights
O'Hare Intl to Luis Munoz Marin Intl flights
John F Kennedy Intl to Punta Cana flights
Philadelphia to Luis Munoz Marin Intl flights
Reagan-National to Luis Munoz Marin Intl flights
Newark to Santiago de los Caballeros flights
John F Kennedy Intl to Oranjestad flights
Newark to Oranjestad flights
Boston to Luis Munoz Marin Intl flights
John F Kennedy Intl to Santo Domingo flights
Newark to Santo Domingo flights
Baltimore to Luis Munoz Marin Intl flights
John F Kennedy Intl to Montego Bay flights
Atlanta to Luis Munoz Marin Intl flights
John F Kennedy Intl to Nassau flights
Hartford to Luis Munoz Marin Intl flights
Newark to Nassau flights
John F Kennedy Intl to Port of Spain flights
Boston to Oranjestad flights
Raleigh to Luis Munoz Marin Intl flights
Dallas/Fort Worth to Luis Munoz Marin Intl flights
LaGuardia to Punta Cana flights
Minneapolis to Luis Munoz Marin Intl flights
Detroit to Luis Munoz Marin Intl flights
Fort Lauderdale to Luis Munoz Marin Intl flights
Dulles Intl to Punta Cana flights
Newark to Simpson Bay flights
Hobby to Luis Munoz Marin Intl flights
LaGuardia to Nassau flights
Boston to Punta Cana flights
John F Kennedy Intl to Simpson Bay flights
Orlando to Luis Munoz Marin Intl flights
John F Kennedy Intl to Providenciales flights
Newark to Montego Bay flights
Midway to Luis Munoz Marin Intl flights
Atlanta to Punta Cana flights
O'Hare Intl to Punta Cana flights
Tampa to Luis Munoz Marin Intl flights
LaGuardia to Santo Domingo flights
Newark to Providenciales flights
George Bush Intcntl to Luis Munoz Marin Intl flights
LaGuardia to Santiago de los Caballeros flights
LaGuardia to Oranjestad flights
Baltimore to Punta Cana flights
John F Kennedy Intl to Saint Thomas Island flights

Top 6 airlines flying from Missouri to Puerto Rico

Discover the top 6 airlines that operate flights from Missouri to Puerto Rico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$133Average$277FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$146Average$319FlexibilityNo cancel feeOn-time65%
DeltaCheapest$154Average$385FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$215Average$510FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$219Average$552FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$234Average$486FlexibilityNo cancel feeOn-time71%

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