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Puerto Rico

$90+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
ene. 3 — ene. 101
sáb. 1/3
sáb. 1/10
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 diciembre 4, 2025.

This Frontier deal was found by Cheapflights users on 12/2. 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.
jue. 12/1810:42 amSTL - SJU
1 stop11h 55mFrontier
dom. 12/213:55 amSJU - STL
1 stop7h 50mFrontier
Deal found 12/2$263
This CheapOair deal was found by Cheapflights users on 12/4. 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.
mar. 12/3010:48 amSTL - SJU
1 stop12h 46mFrontier
mié. 1/79:23 pmSJU - STL
1 stop27h 10mFrontier
Deal found 12/4$264
This Priceline deal was found by Cheapflights users on 12/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/113:30 pmSTL - SJU
1 stop9h 20mFrontier
jue. 12/185:09 pmSJU - STL
1 stop7h 24mFrontier
Deal found 12/4$268
This Frontier deal was found by Cheapflights users on 12/3. 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.
mar. 12/93:30 pmSTL - SJU
1 stop9h 20mFrontier
vie. 12/125:09 pmSJU - STL
1 stop7h 24mFrontier
Deal found 12/3$280
This Frontier deal was found by Cheapflights users on 12/3. 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.
lun. 12/153:30 pmSTL - SJU
1 stop9h 20mFrontier
dom. 12/2110:33 pmSJU - STL
1 stop11h 39mFrontier
Deal found 12/3$288
This Priceline deal was found by Cheapflights users on 12/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/89:54 amSTL - SJU
1 stop14h 56mFrontier
mar. 12/93:55 amSJU - STL
1 stop20h 38mFrontier
Deal found 12/4$294
This Frontier deal was found by Cheapflights users on 12/3. 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.
vie. 12/123:30 pmSTL - SJU
1 stop9h 20mFrontier
dom. 12/2110:33 pmSJU - STL
1 stop11h 39mFrontier
Deal found 12/3$304
This American Airlines deal was found by Cheapflights users on 12/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/156:00 amMCI - SJU
1 stop15h 52mAmerican Airlines
jue. 12/256:00 amSJU - MCI
1 stop14h 51mAmerican Airlines
Deal found 12/3$305
This Priceline deal was found by Cheapflights users on 12/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/123:30 pmSTL - SJU
1 stop9h 20mFrontier
sáb. 12/133:55 amSJU - STL
1 stop7h 04mFrontier
Deal found 12/3$314
This CheapOair deal was found by Cheapflights users on 12/4. 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.
sáb. 12/63:30 pmSTL - SJU
1 stop9h 20mFrontier
lun. 12/299:37 pmSJU - STL
1 stop26h 56mFrontier
Deal found 12/4$315
This Super.com deal was found by Cheapflights users on 12/4. 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.
vie. 12/127:01 pmMCI - SJU
1 stop15h 31mSpirit Airlines
jue. 12/188:20 amSJU - MCI
1 stop10h 50mSpirit Airlines
Deal found 12/4$317
This Priceline deal was found by Cheapflights users on 12/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/53:30 pmSTL - SJU
1 stop9h 20mFrontier
vie. 12/125:09 pmSJU - STL
1 stop7h 24mFrontier
Deal found 12/4$317

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 diciembre 4, 2025.

Round-trip from

$180
(Priceline)

One-way from

$90
(Priceline)

Popular in

December

Cheapest in

September

Average price

$615
From Missouri to Puerto Rico
Search Deals
One-way flight from Missouri to Puerto Rico
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 diciembre 4, 2025.
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

jue. 2/19

5:11 pm-9:55 am

1 stop14h 44m

San Juan Luis Munoz Marin Intl

dom. 2/22

3:55 am-10:33 pm

1 stop20h 38m

$201

SpringfieldSan Juan

SGF - SJU

SGFSJU

Springfield-Branson

dom. 1/25

3:14 pm-6:11 am

2 stops12h 57m

San Juan Luis Munoz Marin Intl

vie. 1/30

8:35 am-2:38 pm

1 stop8h 03m

$235

SpringfieldSan Juan

SGF - SJU

SGFSJU

Springfield-Branson

dom. 1/25

10:50 am-10:26 pm

1 stop9h 36m

San Juan Luis Munoz Marin Intl

vie. 1/30

6:00 am-8:25 pm

1 stop16h 25m

$235

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

mar. 1/27

8:05 am-5:17 pm

1 stop7h 12m

San Juan Luis Munoz Marin Intl

mié. 2/4

6:27 pm-11:51 pm

1 stop7h 24m

$235

SpringfieldSan Juan

SGF - SJU

SGFSJU

Springfield-Branson

mar. 1/27

7:45 am-9:26 pm

2 stops11h 41m

San Juan Luis Munoz Marin Intl

jue. 1/29

2:05 am-2:38 pm

2 stops14h 33m

$235

SpringfieldSan Juan

SGF - SJU

SGFSJU

Springfield-Branson

mar. 1/27

5:00 pm-10:48 am

2 stops15h 48m

San Juan Luis Munoz Marin Intl

vie. 1/30

6:00 am-4:14 pm

1 stop12h 14m

$235

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

mié. 1/28

8:05 am-8:58 pm

1 stop10h 53m

San Juan Luis Munoz Marin Intl

mié. 2/4

6:27 pm-11:51 pm

1 stop7h 24m

$235

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

mié. 1/28

8:05 am-8:58 pm

1 stop10h 53m

San Juan Luis Munoz Marin Intl

jue. 2/5

6:27 pm-11:51 pm

1 stop7h 24m

$235

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

dom. 1/18

10:06 am-11:29 pm

1 stop11h 23m

San Juan Luis Munoz Marin Intl

sáb. 1/24

4:36 pm-11:33 pm

1 stop8h 57m

$237

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

mar. 2/10

11:29 am-9:00 pm

1 stop7h 31m

San Juan Luis Munoz Marin Intl

sáb. 2/14

7:45 am-2:02 pm

1 stop8h 17m

$255

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

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 diciembre 4, 2025.

It’s typically best to fly out from Missouri to Puerto Rico in the evening. Doing so could potentially save you 30% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Missouri to Puerto Rico?

Use this chart to determine the cheapest time to fly round-trip from Missouri to Puerto Rico. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Missouri to Puerto Rico flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 9h 36m. Fly via Frontier, United Airlines, or American Airlines to get the fastest option. There are 2103 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

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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
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LaGuardia to Santo Domingo flights
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LaGuardia to Nassau flights
LaGuardia to Oranjestad flights
Fort Lauderdale to Santo Domingo flights
Newark to Providenciales flights
Miami to Santo Domingo flights
John F Kennedy Intl to Kingston flights
Atlanta to Punta Cana flights
Midway to Luis Munoz Marin Intl flights
Baltimore to Punta Cana 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 diciembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$140Average$289FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$170Average$323FlexibilityNo cancel feeOn-time65%
DeltaCheapest$207Average$380FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$215Average$503FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$219Average$578FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$235Average$498FlexibilityNo cancel feeOn-time71%

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