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Cheap flights from Missouri to Puerto Rico from $103

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 9/22. 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

Delta Logo
6:00 am - 2:11 pmSTL-SJU
7h 11m1 stop
Delta Logo
7:15 am - 2:43 pmSJU-STL
8h 28m1 stop
$205Delta
Find Deal
Sat, Oct 25 - Sat, Nov 1
Delta Logo
12:11 pm - 10:00 pmMCI-SJU
8h 49m1 stop
Delta Logo
2:31 pm - 11:52 pmSJU-MCI
10h 21m1 stop
$215Delta
Find Deal
Wed, Oct 1 - Wed, Oct 8
United Airlines Logo
6:15 am - 3:42 pmSTL-SJU
8h 27m1 stop
United Airlines Logo
1:05 am - 2:25 pmSJU-STL
14h 20m2 stops
$220United Airlines
Find Deal
Tue, Oct 14 - Mon, Oct 27
American Airlines Logo
7:20 am - 8:50 pmMCI-SJU
11h 30m2 stops
American Airlines Logo
9:25 am - 7:12 pmSJU-MCI
11h 47m2 stops
$240American Airlines
Find Deal
Sun, Jan 18 - Thu, Jan 22
United Airlines Logo
6:15 am - 3:42 pmSTL-SJU
8h 27m1 stop
United Airlines Logo
7:30 am - 5:39 pmSJU-STL
11h 09m2 stops
$242United Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 28
Spirit Airlines Logo
5:15 am - 2:11 pmMCI-SJU
7h 56m1 stop
Spirit Airlines Logo
11:59 am - 10:18 amSJU-MCI
23h 19m1 stop
$251Spirit Airlines
Find Deal
Tue, Sep 16 - Thu, Sep 25
Spirit Airlines Logo
5:15 am - 2:11 pmMCI-SJU
7h 56m1 stop
Spirit Airlines Logo
11:59 am - 10:18 amSJU-MCI
23h 19m1 stop
$264Spirit Airlines
Find Deal
Sat, Sep 20 - Thu, Sep 25
American Airlines Logo
10:54 am - 11:54 pmMCI-SJU
12h 00m2 stops
American Airlines Logo
7:45 am - 8:52 pmSJU-MCI
14h 07m2 stops
$265American Airlines
Find Deal
Sat, Oct 18 - Wed, Oct 22
Frontier Logo
5:11 pm - 2:50 amSTL-SJU
7h 39m1 stop
Frontier Logo
3:55 am - 8:45 amSJU-STL
6h 50m1 stop
$269Frontier
Find Deal
Fri, Dec 5 - Thu, Dec 11
Frontier Logo
1:57 pm - 11:59 pmSTL-SJU
9h 02m1 stop
Frontier Logo
3:39 am - 1:07 pmSJU-STL
10h 28m1 stop
$286Frontier
Find Deal
Mon, Sep 15 - Sat, Sep 20

American Airlines flights from Missouri to Puerto Rico

Our best American Airlines deals on Missouri to Puerto Rico flight tickets
American Airlines
Jan 18
MCI7:20 amKansas City
11h 30m
2 stops
SJU8:50 pmSan Juan Luis Munoz Marin Intl
Jan 22
SJU9:25 amSan Juan Luis Munoz Marin Intl
11h 47m
2 stops
MCI7:12 pmKansas City
$240
Find similar
American Airlines
Oct 18
MCI10:54 amKansas City
12h 00m
2 stops
SJU11:54 pmSan Juan Luis Munoz Marin Intl
Oct 22
SJU7:45 amSan Juan Luis Munoz Marin Intl
14h 07m
2 stops
MCI8:52 pmKansas City
$265
Find similar
American Airlines
Jan 24
MCI4:30 pmKansas City
17h 15m
1 stop
SJU11:45 amSan Juan Luis Munoz Marin Intl
Feb 4
SJU7:20 amSan Juan Luis Munoz Marin Intl
13h 52m
1 stop
MCI7:12 pmKansas City
$268
Find similar

United Airlines flights from Missouri to Puerto Rico

Our best United Airlines deals on Missouri to Puerto Rico flight tickets
United Airlines
Oct 14
STL6:15 amLambert-St Louis
8h 27m
1 stop
SJU3:42 pmSan Juan Luis Munoz Marin Intl
Oct 27
SJU1:05 amSan Juan Luis Munoz Marin Intl
14h 20m
2 stops
STL2:25 pmLambert-St Louis
$220
Find similar
United Airlines
Oct 14
STL6:15 amLambert-St Louis
8h 27m
1 stop
SJU3:42 pmSan Juan Luis Munoz Marin Intl
Oct 28
SJU7:30 amSan Juan Luis Munoz Marin Intl
11h 09m
2 stops
STL5:39 pmLambert-St Louis
$242
Find similar
United Airlines
Jan 11
MCI10:00 amKansas City
9h 00m
1 stop
SJU9:00 pmSan Juan Luis Munoz Marin Intl
Jan 17
SJU8:10 amSan Juan Luis Munoz Marin Intl
11h 11m
2 stops
MCI5:21 pmKansas City
$277
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 August 14, 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

Sat 10/25

6:00 am-2:11 pm

1 stop7h 11m

San Juan Luis Munoz Marin Intl

Sat 11/1

7:15 am-2:43 pm

1 stop8h 28m

$205

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Wed 10/1

12:11 pm-10:00 pm

1 stop8h 49m

San Juan Luis Munoz Marin Intl

Wed 10/8

2:31 pm-11:52 pm

1 stop10h 21m

$215

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 10/14

6:15 am-3:42 pm

1 stop8h 27m

San Juan Luis Munoz Marin Intl

Mon 10/27

1:05 am-2:25 pm

2 stops14h 20m

$220

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Sun 1/18

7:20 am-8:50 pm

2 stops11h 30m

San Juan Luis Munoz Marin Intl

Thu 1/22

9:25 am-7:12 pm

2 stops11h 47m

$240

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 10/14

6:15 am-3:42 pm

1 stop8h 27m

San Juan Luis Munoz Marin Intl

Tue 10/28

7:30 am-5:39 pm

2 stops11h 09m

$242

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Tue 9/16

5:15 am-2:11 pm

1 stop7h 56m

San Juan Luis Munoz Marin Intl

Thu 9/25

11:59 am-10:18 am

1 stop23h 19m

$251

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Sat 9/20

5:15 am-2:11 pm

1 stop7h 56m

San Juan Luis Munoz Marin Intl

Thu 9/25

11:59 am-10:18 am

1 stop23h 19m

$264

Kansas CitySan Juan

MCI - SJU

MCISJU

Kansas City

Sat 10/18

10:54 am-11:54 pm

2 stops12h 00m

San Juan Luis Munoz Marin Intl

Wed 10/22

7:45 am-8:52 pm

2 stops14h 07m

$265

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 12/5

5:11 pm-2:50 am

1 stop7h 39m

San Juan Luis Munoz Marin Intl

Thu 12/11

3:55 am-8:45 am

1 stop6h 50m

$269

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 9/15

1:57 pm-11:59 pm

1 stop9h 02m

San Juan Luis Munoz Marin Intl

Sat 9/20

3:39 am-1:07 pm

1 stop10h 28m

$286

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 $636.

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 evening. Flights from Missouri to Puerto Rico during this time can be as low as $310. 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 $451 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 $335 on momondo.

What cabin class options are available on Missouri to Puerto Rico flights?

There are 1 cabin classes 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 44% 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

Best Price Found

$103

Fastest flight time

6h 15m

Direct flights

Sun

Airports in Puerto Rico

1 airport
The best one-way flight to Puerto Rico from Missouri in the past 72 hours is $103. The best round-trip flight deal from Missouri to Puerto Rico found on momondo in the last 72 hours is $205.
The fastest flight from Missouri to Puerto Rico takes 6h 15m
Direct flights go from Missouri to Puerto Rico on Sunday. The only airline offering direct flights is Southwest.
There is 1 airport near Puerto Rico: 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
5.8
3,219 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $170Free CancellationRating
6.3
8,045 reviews
Search Spirit Airlines flights
DeltaPriceFrom $209Free CancellationRating
8.0
7,980 reviews
Search Delta flights
United AirlinesPriceFrom $219Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
SouthwestPriceFrom $219Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
American AirlinesPriceFrom $257Free CancellationRating
7.2
10,000 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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