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Caribbean Islands

$90+ Cheap flights from Missouri to Caribbean Islands

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
Dec 23 — Dec 301
Tue 12/23
Tue 12/30
1 adult, Economy
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Find flight deals from Missouri to Caribbean Islands

Cheapest flights from Missouri to Caribbean Islands
Explore the most affordable flight options available from Missouri to Caribbean Islands. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 23, 2025.

This Frontier deal was found by Cheapflights users on 11/22. 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.
Wed 12/103:30 pmSTL - SJU
1 stop9h 20mFrontier
Mon 1/124:07 pmSJU - STL
1 stop8h 26mFrontier
Deal found 11/22$180
This Frontier deal was found by Cheapflights users on 11/22. 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 12/93:30 pmSTL - SJU
1 stop9h 20mFrontier
Mon 1/124:07 pmSJU - STL
1 stop8h 26mFrontier
Deal found 11/22$192
This CheapOair deal was found by Cheapflights users on 11/21. 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.
Thu 12/43:30 pmSTL - SJU
1 stop16h 25mFrontier
Mon 12/83:55 amSJU - STL
1 stop20h 38mFrontier
Deal found 11/21$201
This Frontier deal was found by Cheapflights users on 11/22. 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 12/93:30 pmSTL - SJU
1 stop9h 20mFrontier
Thu 1/159:04 pmSJU - STL
1 stop12h 50mFrontier
Deal found 11/22$213
This Priceline deal was found by Cheapflights users on 11/22. 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.
Thu 12/113:30 pmSTL - SJU
1 stop9h 20mFrontier
Tue 1/138:57 amSJU - STL
1 stop15h 37mFrontier
Deal found 11/22$217
This Kiwi.com deal was found by Cheapflights users on 11/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:01 pmMCI - SJU
1 stop15h 31mMultiple Airlines
Sat 12/207:35 amSJU - MCI
1 stop11h 35mMultiple Airlines
Deal found 11/21$225
This Mytrip deal was found by Cheapflights users on 11/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:01 pmMCI - SJU
1 stop15h 31mSpirit Airlines
Fri 12/194:10 amSJU - MCI
1 stop15h 00mSpirit Airlines
Deal found 11/21$233
This Priceline deal was found by Cheapflights users on 11/22. 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.
Sun 12/73:30 pmSTL - SJU
1 stop16h 25mFrontier
Wed 12/103:55 amSJU - STL
1 stop20h 38mFrontier
Deal found 11/22$238
This CheapOair deal was found by Cheapflights users on 11/23. 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.
Sat 12/63:30 pmSTL - SJU
1 stop16h 25mFrontier
Sun 12/283:55 amSJU - STL
1 stop7h 50mFrontier
Deal found 11/23$243
This Kiwi.com deal was found by Cheapflights users on 11/22. 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.
Thu 12/1112:04 pmSTL - SJU
2 stops22h 28mMultiple Airlines
Thu 1/159:04 pmSJU - STL
1 stop12h 50mMultiple Airlines
Deal found 11/22$246
This Trip.com deal was found by Cheapflights users on 11/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:30 pmSTL - SJU
1 stop16h 25mMultiple Airlines
Mon 12/84:10 amSJU - STL
2 stops20h 23mMultiple Airlines
Deal found 11/21$247
This Priceline deal was found by Cheapflights users on 11/22. 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.
Mon 12/83:30 pmSTL - SJU
1 stop9h 20mFrontier
Fri 12/125:09 pmSJU - STL
1 stop7h 24mFrontier
Deal found 11/22$252

Cheap flight deals from Missouri to Caribbean Islands

Keep the following information in mind while searching for Missouri to Caribbean Islands flight deals. Data was last updated November 23, 2025.

Round-trip from

$180
(Frontier)

One-way from

$90
(Priceline)

Popular in

December

Cheapest in

September

Average price

$490
From Missouri to Caribbean Islands
Search Deals
One-way flight from Missouri to Caribbean Islands
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($68 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 November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Caribbean Islands 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 November 23, 2025.
Use the filters below to find and compare flights from Missouri to Caribbean Islands that are best for you.

Fly from

Missouri

Fly to

Caribbean Islands

Route

Depart

Return

Price

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sun 1/25

4:45 pm-1:08 am

1 stop6h 23m

San Juan Luis Munoz Marin Intl

Thu 1/29

4:36 pm-11:33 pm

1 stop8h 57m

$215

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Sun 1/25

10:44 am-8:58 pm

1 stop8h 14m

San Juan Luis Munoz Marin Intl

Tue 2/3

6:27 pm-11:51 pm

1 stop7h 24m

$219

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Fri 2/20

8:35 pm-10:00 am

1 stop11h 25m

San Juan Luis Munoz Marin Intl

Wed 2/25

5:40 am-11:05 am

1 stop7h 25m

$219

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Sun 1/25

5:50 am-5:17 pm

1 stop9h 27m

San Juan Luis Munoz Marin Intl

Thu 2/5

6:27 pm-11:51 pm

1 stop7h 24m

$219

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

6:27 pm-11:51 pm

1 stop7h 24m

$219

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Mon 1/26

5:50 am-2:31 pm

1 stop6h 41m

San Juan Luis Munoz Marin Intl

Mon 2/2

6:27 pm-11:51 pm

1 stop7h 24m

$219

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Wed 1/28

8:05 am-8:58 pm

1 stop10h 53m

San Juan Luis Munoz Marin Intl

Fri 2/6

7:30 am-5:13 pm

1 stop11h 43m

$219

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Wed 1/28

10:44 am-8:58 pm

1 stop8h 14m

San Juan Luis Munoz Marin Intl

Wed 2/4

6:27 pm-11:51 pm

1 stop7h 24m

$219

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Wed 1/28

8:05 am-8:58 pm

1 stop10h 53m

San Juan Luis Munoz Marin Intl

Tue 2/3

6:27 pm-11:51 pm

1 stop7h 24m

$219

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Sun 1/25

8:05 am-8:58 pm

1 stop10h 53m

San Juan Luis Munoz Marin Intl

Thu 1/29

3:55 pm-10:02 pm

1 stop8h 07m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/22

Showing 1-10 of 60 results
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Best time to book a flight from Missouri to Caribbean Islands

Have a flexible travel schedule? Discover the best time to fly to Caribbean Islands 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 Caribbean Islands

What is the cheapest month to book a flight from Missouri to Caribbean Islands?

Currently, February is the cheapest month in which you can book a flight from Missouri to Caribbean Islands (average of $128). Flying from Missouri to Caribbean Islands in August is currently the most expensive (average of $224). 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 EPX?

Find hourly flight availability from Missouri to Caribbean Islands. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 23, 2025.

It’s optimal to fly from Missouri to Caribbean Islands in the evening. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Missouri to Caribbean Islands?

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

Travelers seeking maximum savings on their Missouri to Caribbean Islands flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday mornings 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 Caribbean Islands. 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 Caribbean Islands?

    Frontier, Delta, and Southwest can get you from Missouri to Caribbean Islands in just under 6h 23m. Your travel time can differ by up to 5h 02m. There are 2024 mi between Missouri and Caribbean Islands. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Missouri to Caribbean Islands one-way?

    One-way options have recently been found by users for as low as $90 on Frontier. Other airlines that offer cheap prices include United Airlines from $106 and Southwest from $110 one-way.

  • Can I find deals for flights from Missouri to Caribbean Islands that include hotel bookings?

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

  • How can I find direct flights from Missouri to Caribbean Islands?

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

  • Can I find deals for business class flights from Missouri to Caribbean Islands?

    Yes. Cheapflights offers flight deals from Missouri to Caribbean Islands 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 Caribbean Islands?

    Currently, February is the cheapest month in which you can book a flight from Missouri to Caribbean Islands (average of $128). Flying from Missouri to Caribbean Islands in August is currently the most expensive (average of $224). 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

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Top 6 airlines flying from Missouri to Caribbean Islands

Discover the top 6 airlines that operate flights from Missouri to Caribbean Islands. 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 November 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$140Average$393FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$170Average$343FlexibilityNo cancel feeOn-time65%
DeltaCheapest$206Average$603FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$219Average$726FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$225Average$584FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$644FlexibilityNo cancel feeOn-time71%

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