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Luis Munoz Marin Intl

$47+ Cheap flights from Saint Thomas Island (STT) to Luis Munoz Marin Intl (SJU)

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
STT — SJU
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Saint Thomas Island Cyril E King to San Juan Luis Munoz Marin Intl are usually found in November or September, booked 23 days in advance, depart on a Friday or Monday and return on a Friday

Cheap flight deals from Saint Thomas Island to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Saint Thomas Island (STT) to Luis Munoz Marin Intl (SJU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$94
(Frontier)

One-way from

$47
(Kiwi.com)

Popular in

April

Cheapest in

November

Average price

$145

Good round-trip deal

$138 or less

Good one-way deal

$95 or less
From Saint Thomas Island Cyril E King to San Juan Luis Munoz Marin Intl
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One-way flight from Saint Thomas Island Cyril E King to San Juan Luis Munoz Marin Intl
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Highest demand for flights based on searches. 18% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Saint Thomas Island Cyril E King to San Juan Luis Munoz Marin Intl.
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Price to beat on a one-way flight from Saint Thomas Island Cyril E King to San Juan Luis Munoz Marin Intl.
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Find flight deals from Saint Thomas Island to Luis Munoz Marin Intl

Cheapest flights from Saint Thomas Island to Luis Munoz Marin Intl
Explore the most affordable flight options available from Saint Thomas Island to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Frontier deal was found by Cheapflights users on 6/12. 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.
Fri 7/115:14 pmSTT - SJU
Nonstop0h 54mFrontier
Fri 7/183:37 pmSJU - STT
Nonstop0h 52mFrontier
Deal found 6/12$94
This Trip.com deal was found by Cheapflights users on 6/11. 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.
Wed 7/169:10 amSTT - SJU
Nonstop0h 35mMultiple Airlines
Mon 7/213:37 pmSJU - STT
Nonstop0h 52mMultiple Airlines
Deal found 6/11$97
This Trip.com deal was found by Cheapflights users on 6/10. 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.
Wed 8/136:05 pmSTT - SJU
Nonstop0h 35mSilver Airways
Sat 8/168:00 amSJU - STT
Nonstop0h 35mSilver Airways
Deal found 6/10$100
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/224:10 pmSTT - SJU
Nonstop0h 44mJetBlue
Mon 8/252:35 pmSJU - STT
Nonstop0h 37mJetBlue
Deal found 6/12$119
This Expedia deal was found by Cheapflights users on 6/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1110:43 amSTT - SJU
1 stop10h 26mSpirit Airlines
Fri 7/1810:14 pmSJU - STT
1 stop11h 34mSpirit Airlines
Deal found 6/12$278
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/95:45 pmSTT - SJU
Nonstop0h 35mCape Air
Wed 10/17:15 amSJU - STT
Nonstop0h 35mCape Air
Deal found 6/11$378

Cheapflights Fare Finder

Customize your flight search to find flights from Saint Thomas Island to Luis Munoz Marin Intl 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 June 12, 2025.
Use the filters below to find and compare flights from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Saint Thomas Island

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Fri 7/11

5:14 pm-6:08 pm

Nonstop0h 54m

San Juan Luis Munoz Marin Intl

Fri 7/18

3:37 pm-4:29 pm

Nonstop0h 52m

$94

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Wed 7/16

9:10 am-9:45 am

Nonstop0h 35m

San Juan Luis Munoz Marin Intl

Mon 7/21

3:37 pm-4:29 pm

Nonstop0h 52m

$97

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Wed 8/13

6:05 pm-6:40 pm

Nonstop0h 35m

San Juan Luis Munoz Marin Intl

Sat 8/16

8:00 am-8:35 am

Nonstop0h 35m

$100

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Fri 8/22

4:10 pm-4:54 pm

Nonstop0h 44m

San Juan Luis Munoz Marin Intl

Mon 8/25

2:35 pm-3:12 pm

Nonstop0h 37m

$119

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Mon 7/14

12:26 pm-9:09 pm

1 stop8h 43m

San Juan Luis Munoz Marin Intl

Wed 7/16

2:40 am-3:10 pm

1 stop12h 30m

$264

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Tue 9/9

7:49 am-8:24 am

Nonstop0h 35m

San Juan Luis Munoz Marin Intl

Tue 9/30

5:25 pm-6:00 pm

Nonstop0h 35m

$378

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Fri 7/4

5:12 pm-6:10 pm

Nonstop0h 58m

$48

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Tue 7/15

6:05 pm-6:40 pm

Nonstop0h 35m

$50

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Wed 6/25

2:20 pm-3:07 pm

Nonstop0h 47m

$55

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Sun 6/22

9:10 am-9:45 am

Nonstop0h 35m

$96

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 13 results
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The best insider tips for Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport trip
Airports
STT

Enjoy quick screening times at STT with easy check-in and departure, making it one of the most convenient airports in Florida.

Read more about STTby Mark Chesnut
SJU

For a quick ride from SJU, use Uber for convenience and cashless payment, available outside arrivals.

Read more about SJUby Brandon Schultz
Our travel experts
Mark Chesnut

Mark Chesnut

Expert on STT

Mark Chesnut

Mark Chesnut

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more
Brandon Schultz

Brandon Schultz

Expert on SJU

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Best time to book a flight from Saint Thomas Island to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Saint Thomas Island 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 Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport

How far ahead should I book a flight from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Saint Thomas Island to Luis Munoz Marin Intl. Price data was last updated on June 9, 2025.

The best time to book flights from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport is 23 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport?

Currently, September is the cheapest month in which you can book a flight from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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 STT to SJU?

Find hourly flight availability from Saint Thomas Island to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 50% on flights from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport by exploring options for tickets at noon.

Weekly flight availability from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport

Explore weekly flight availability from Saint Thomas Island to Luis Munoz Marin Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from STT to SJU are scheduled on a Thursday (28 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (21 on average).

Rainfall in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan Luis Munoz Marin Intl Airport ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan Luis Munoz Marin Intl Airport when rainfall is around 2.2 in.

Temperature in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan Luis Munoz Marin Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Luis Munoz Marin Intl. Reviews last updated June 12, 2025.
See what other customers who have flown with United Airlines, JetBlue and Spirit Airlines from Saint Thomas Island to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
JetBlue
7.3
Good
2,925 reviews
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Spirit Airlines
6.3
Okay
8,052 reviews
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Frontier
6.0
Okay
3,295 reviews
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Saint Thomas Island to Luis Munoz Marin Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Saint Thomas Island to San Juan Luis Munoz Marin Intl?

    If you book a flight to San Juan Luis Munoz Marin Intl from Saint Thomas Island, you will be flying from Cyril E King, which is the city’s only airport. Saint Thomas Island Cyril E King (STT) is located 2.8 mi from the center of Saint Thomas Island. There are 24 flights from Cyril E King to San Juan Luis Munoz Marin Intl per day from 5 different airlines.

  • What are the cheapest airlines flying from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport round-trip?

    Cheapflights users have booked flights from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport round-trip from $94. Other airlines that can offer you cheap pricing are Silver Airways, from $100, and JetBlue, from $119. Frontier is 6% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport one-way?

    $47 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Silver Airways and JetBlue, with prices starting from $50 and $55, respectively.

  • What are the most reliable airlines from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport?

    Before booking your flight to San Juan Luis Munoz Marin Intl Airport from Saint Thomas Island, check out the most reliable airlines to get you to your destination on time: United Airlines (95%), Silver Airways (92%), Sun Country Air( 67%).

  • What are the cheapest flights from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport?

    The cheapest flight price from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport is $74. On average you can expect to pay $181. The most popular route, (Saint Thomas Island Cyril E King - San Juan Luis Munoz Marin Intl), can usually be booked for $100.

  • Can I find deals for flights from Saint Thomas Island to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Saint Thomas Island to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Saint Thomas Island to Luis Munoz Marin Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Saint Thomas Island to Luis Munoz Marin Intl.

  • Can I find deals for business class flights from Saint Thomas Island to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Saint Thomas Island to Luis Munoz Marin Intl 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 Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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

Traveling to a place near Saint Thomas Island?

Book flights to Saint Thomas Island if you plan to visit one of these locations
Dorado
Fajardo
Luquillo
Rio Grande
Humacao
Bayamón

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Alternative routes for Saint Thomas Island to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.
Christiansted to Luis Munoz Marin Intl flights

Top 5 airlines flying from Saint Thomas Island to Luis Munoz Marin Intl

Discover the top 5 airlines that operate flights from Saint Thomas Island to Luis Munoz Marin Intl. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$23Average$60FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$49Average$110FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$58Average$77FlexibilityNo cancel feeOn-time69%
Silver AirwaysCheapest$64Average$115FlexibilityNo cancel feeOn-timeN/A
Cape AirCheapest$231Average$283FlexibilityNo cancel feeOn-time63%

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