Luis Munoz Marin Intl

$65+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
STT — SJU
Aug 2 — Aug 91
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Saint Thomas Island to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 28, 2025.

Round-trip from

$97
(Frontier)

One-way from

$65
(JetBlue)

Popular in

June

Cheapest in

November

Average price

$123

Good round-trip deal

$75 or less

Good one-way deal

$99 or less
From Saint Thomas Island Cyril E King to San Juan Luis Munoz Marin Intl
One-way flight from Saint Thomas Island Cyril E King to San Juan Luis Munoz Marin Intl
Highest demand for flights based on searches. 25% potential increase in price ($34 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in July 2025
Price to beat on a round-trip flight from Saint Thomas Island Cyril E King to San Juan Luis Munoz Marin Intl.
Price to beat on a one-way flight from Saint Thomas Island Cyril E King to San Juan Luis Munoz Marin Intl.

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 July 28, 2025.

This Frontier deal was found by Cheapflights users on 7/27. 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.
Mon 8/115:14 pmSTT - SJU
Nonstop0h 54mFrontier
Fri 8/153:37 pmSJU - STT
Nonstop0h 52mFrontier
Deal found 7/27$97
This JetBlue deal was found by Cheapflights users on 7/27. 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.
Wed 8/202:23 pmSTT - SJU
Nonstop0h 47mJetBlue
Wed 8/2712:50 pmSJU - STT
Nonstop0h 38mJetBlue
Deal found 7/27$109
This Priceline deal was found by Cheapflights users on 7/27. 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 8/115:14 pmSTT - SJU
Nonstop0h 54mMultiple Airlines
Wed 8/1311:55 amSJU - STT
Nonstop0h 35mMultiple Airlines
Deal found 7/27$168
This FlightHub deal was found by Cheapflights users on 7/26. 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.
Mon 8/111:25 pmSTT - SJU
1 stop12h 10mSpirit Airlines
Thu 8/142:11 amSJU - STT
1 stop11h 37mSpirit Airlines
Deal found 7/26$297

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 July 28, 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

Mon 8/11

5:14 pm-6:08 pm

Nonstop0h 54m

San Juan Luis Munoz Marin Intl

Fri 8/15

3:37 pm-4:29 pm

Nonstop0h 52m

$97

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Wed 8/20

2:23 pm-3:10 pm

Nonstop0h 47m

San Juan Luis Munoz Marin Intl

Wed 8/27

12:50 pm-1:28 pm

Nonstop0h 38m

$109

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Mon 8/11

5:14 pm-6:08 pm

Nonstop0h 54m

San Juan Luis Munoz Marin Intl

Wed 8/13

11:55 am-12:30 pm

Nonstop0h 35m

$168

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Mon 8/11

1:25 pm-1:35 am

1 stop12h 10m

San Juan Luis Munoz Marin Intl

Thu 8/14

2:11 am-1:48 pm

1 stop11h 37m

$297

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Wed 8/27

5:45 pm-6:20 pm

Nonstop0h 35m

San Juan Luis Munoz Marin Intl

Mon 9/1

11:15 am-11:50 am

Nonstop0h 35m

$308

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Sat 8/23

4:10 pm-4:54 pm

Nonstop0h 44m

$65

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Fri 8/1

5:14 pm-6:08 pm

Nonstop0h 54m

$101

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Tue 8/19

2:43 pm-11:57 pm

1 stop9h 14m

$106

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Sun 8/3

12:54 pm-1:29 pm

Nonstop0h 35m

$140

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

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 July 25, 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 July 28, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 27% 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 July 28, 2025.

The most flights from STT to SJU are scheduled on a Saturday (22 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (15 on average).

How much does it cost to fly round-trip from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport?

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 July 28, 2025.
See what other customers who have flown with JetBlue, Spirit Airlines, and Frontier from Saint Thomas Island to San Juan Luis Munoz Marin Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.3

Boarding

7.4

Comfort

7.6

Overall

7.3

Food

6.7

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Geri,May 2025

RSW - BOS

Full flight, even thought I had priority A boarding, the flight was more than 1/2 full with Mint & Mosaic members, before I could board and get overhead space.

Entertainment

7.3

Boarding

7.4

Comfort

7.6

Overall

7.3

Food

6.7

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Geri,May 2025

RSW - BOS

Full flight, even thought I had priority A boarding, the flight was more than 1/2 full with Mint & Mosaic members, before I could board and get overhead space.

Entertainment

7.3

Boarding

7.4

Comfort

7.6

Overall

7.3

Food

6.7

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Geri,May 2025

RSW - BOS

Full flight, even thought I had priority A boarding, the flight was more than 1/2 full with Mint & Mosaic members, before I could board and get overhead space.

Entertainment

7.3

Boarding

7.4

Comfort

7.6

Overall

7.3

Food

6.7

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Geri,May 2025

RSW - BOS

Full flight, even thought I had priority A boarding, the flight was more than 1/2 full with Mint & Mosaic members, before I could board and get overhead space.

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 18 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 $97. Other airlines that can offer you cheap pricing are JetBlue, from $109, and Spirit Airlines, from $297. Frontier is 7% 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?

    $65 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Frontier and Spirit Airlines, with prices starting from $101 and $106, 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: Qatar Airways (100%), Silver Airways (79%), Air Cargo Carriers( 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 $58. On average you can expect to pay $164. The most popular route, (Saint Thomas Island Cyril E King - San Juan Luis Munoz Marin Intl), can usually be booked for $113.

  • 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 San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Dorado
Fajardo
Luquillo
Rio Grande
Humacao

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 Saint Thomas Island to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.

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 July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$24Average$60FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$53Average$132FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$58Average$77FlexibilityNo cancel feeOn-time69%
Silver AirwaysCheapest$60Average$129FlexibilityNo cancel feeOn-timeN/A
Cape AirCheapest$170Average$283FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.