HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Juan

$64+ Cheap flights from Saint Thomas Island (STT) to San Juan

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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
STT — SJU
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Saint Thomas Island to San Juan 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 are usually found in November or September, booked 64 days in advance, depart on a Friday or Monday and return on a Friday

Cheap flight deals from Saint Thomas Island to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Saint Thomas Island (STT) to San Juan (PR1). 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 August 18, 2025.

Round-trip from

$109
(JetBlue)

One-way from

$64
(Trip.com)

Popular in

July

Cheapest in

November

Average price

$102
From Saint Thomas Island Cyril E King to San Juan
Search Deals
One-way flight from Saint Thomas Island Cyril E King to San Juan
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Saint Thomas Island to San Juan

Cheapest flights from Saint Thomas Island to San Juan
Explore the most affordable flight options available from Saint Thomas Island to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This JetBlue deal was found by Cheapflights users on 8/16. 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 8/272:23 pmSTT - SJU
Nonstop0h 47mJetBlue
Tue 9/212:50 pmSJU - STT
Nonstop0h 38mJetBlue
Deal found 8/16$109
This Expedia deal was found by Cheapflights users on 8/16. 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.
Sun 8/312:23 pmSTT - SJU
Nonstop0h 47mJetBlue
Thu 9/41:55 pmSJU - STT
Nonstop0h 40mJetBlue
Deal found 8/16$124
This Expedia deal was found by Cheapflights users on 8/15. 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 9/123:30 pmSTT - SJU
Nonstop0h 40mJetBlue
Fri 9/191:55 pmSJU - STT
Nonstop0h 36mJetBlue
Deal found 8/15$139
This CheapOair deal was found by Cheapflights users on 8/17. 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 8/234:10 pmSTT - SJU
Nonstop0h 44mJetBlue
Tue 8/2612:50 pmSJU - STT
Nonstop0h 38mJetBlue
Deal found 8/17$144
This Expedia deal was found by Cheapflights users on 8/15. 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.
Sat 10/113:30 pmSTT - SJU
Nonstop0h 40mJetBlue
Mon 10/131:55 pmSJU - STT
Nonstop0h 40mJetBlue
Deal found 8/15$149
This JetBlue deal was found by Cheapflights users on 8/16. 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.
Thu 8/282:23 pmSTT - SJU
Nonstop0h 47mJetBlue
Tue 9/212:50 pmSJU - STT
Nonstop0h 38mJetBlue
Deal found 8/16$154
This Expedia deal was found by Cheapflights users on 8/17. 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 9/53:30 pmSTT - SJU
Nonstop0h 40mJetBlue
Sat 9/61:55 pmSJU - STT
Nonstop0h 36mJetBlue
Deal found 8/17$159
This Expedia deal was found by Cheapflights users on 8/15. 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.
Sat 8/164:10 pmSTT - SJU
Nonstop0h 44mJetBlue
Sun 8/1712:50 pmSJU - STT
Nonstop0h 38mJetBlue
Deal found 8/15$169
This Priceline deal was found by Cheapflights users on 8/15. 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 8/185:14 pmSTT - SJU
Nonstop0h 54mMultiple Airlines
Wed 8/2011:55 amSJU - STT
Nonstop0h 35mMultiple Airlines
Deal found 8/15$188
This Priceline deal was found by Cheapflights users on 8/16. 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.
Sat 9/133:30 pmSTT - SJU
Nonstop0h 40mJetBlue
Sat 9/209:45 amSJU - STT
Nonstop0h 35mJetBlue
Deal found 8/16$199
This Expedia deal was found by Cheapflights users on 8/16. 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.
Thu 8/212:23 pmSTT - SJU
Nonstop0h 47mJetBlue
Sat 8/232:35 pmSJU - STT
Nonstop0h 37mJetBlue
Deal found 8/16$209

Cheapflights Fare Finder

 
Customize your flight search to find flights from Saint Thomas Island to San Juan 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 August 18, 2025.
Use the filters below to find and compare flights from Saint Thomas Island to San Juan that are best for you.

Fly from

Saint Thomas Island

Fly to

San Juan

Route

Depart

Return

Price

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Wed 8/27

2:23 pm-3:10 pm

Nonstop0h 47m

San Juan Luis Munoz Marin Intl

Mon 9/1

12:50 pm-1:28 pm

Nonstop0h 38m

$109

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Wed 8/27

2:23 pm-3:10 pm

Nonstop0h 47m

San Juan Luis Munoz Marin Intl

Sun 8/31

12:50 pm-1:28 pm

Nonstop0h 38m

$109

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Wed 8/27

2:23 pm-3:10 pm

Nonstop0h 47m

San Juan Luis Munoz Marin Intl

Tue 9/2

12:50 pm-1:28 pm

Nonstop0h 38m

$109

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Sun 8/31

2:23 pm-3:10 pm

Nonstop0h 47m

San Juan Luis Munoz Marin Intl

Thu 9/4

1:55 pm-2:35 pm

Nonstop0h 40m

$124

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Fri 9/12

3:30 pm-4:10 pm

Nonstop0h 40m

San Juan Luis Munoz Marin Intl

Fri 9/19

1:55 pm-2:31 pm

Nonstop0h 36m

$139

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Fri 9/19

3:30 pm-4:10 pm

Nonstop0h 40m

San Juan Luis Munoz Marin Intl

Mon 10/6

1:55 pm-2:35 pm

Nonstop0h 40m

$139

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Mon 9/22

3:30 pm-4:10 pm

Nonstop0h 40m

San Juan Luis Munoz Marin Intl

Sun 10/5

1:55 pm-2:35 pm

Nonstop0h 40m

$139

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Fri 9/5

3:30 pm-4:10 pm

Nonstop0h 40m

San Juan Luis Munoz Marin Intl

Sun 9/7

1:55 pm-2:31 pm

Nonstop0h 36m

$139

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Mon 9/22

3:30 pm-4:10 pm

Nonstop0h 40m

San Juan Luis Munoz Marin Intl

Mon 10/6

1:55 pm-2:35 pm

Nonstop0h 40m

$139

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Tue 8/26

2:23 pm-3:10 pm

Nonstop0h 47m

$64

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 17 results
1
2

Best time to book a flight from Saint Thomas Island to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan 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

How far ahead should I book a flight from Saint Thomas Island to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Saint Thomas Island to San Juan. Price data was last updated on August 8, 2025.

Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from Saint Thomas Island to San Juan. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Saint Thomas Island to San Juan?

Currently, September is the cheapest month in which you can book a flight from Saint Thomas Island to San Juan (average of $254). Flying from Saint Thomas Island to San Juan 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 San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 25% on flights from Saint Thomas Island to San Juan by exploring options for tickets at noon.

Weekly flight availability from Saint Thomas Island to San Juan

Explore weekly flight availability from Saint Thomas Island to San Juan. 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 August 18, 2025.

The most flights from STT to PR1 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).

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated August 18, 2025.
Read reviews from past customers who have flown United Airlines, JetBlue, and Silver Airways from Saint Thomas Island to San Juan. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,925 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,925 reviews
United Airlines
7.4
Good
8,925 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
JetBlue
7.2
Good
2,915 reviews
United Airlines
7.4
Good
8,925 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Silver Airways
5.9
Fair
248 reviews
United Airlines
7.4
Good
8,925 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Frontier
5.8
Fair
3,212 reviews
United Airlines
7.4
Good
8,925 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Related info for your journey

Find useful and relevant information for your journey from Saint Thomas Island to San Juan. 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?

    Most people fly from Saint Thomas Island Cyril E King (STT) if they book a flight from Saint Thomas Island to San Juan. On average, Cyril E King has 18 outbound flights to San Juan per day from 5 airlines. Saint Thomas Island Cyril E King is conveniently located just 2.8 mi from Saint Thomas Island’s city center.

  • What are the cheapest airlines flying from Saint Thomas Island to San Juan round-trip?

    According to our current data, Frontier ($24), JetBlue ($52), and United Airlines ($58) offers the cheapest pricing from Saint Thomas Island to San Juan. You may be able to fly from Saint Thomas Island to San Juan for 77% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Saint Thomas Island to San Juan?

    Before booking your flight to San Juan from Saint Thomas Island, check out the most reliable airlines to get you to your destination on time: Air Cargo Carriers (75%), JetBlue (68%), Cape Air( 65%).

  • What are the cheapest flights from Saint Thomas Island to San Juan?

    On average you can expect to pay $228 for a flight from Saint Thomas Island to San Juan. The cheapest flight overall is $54 while the most popular route, (Saint Thomas Island Cyril E King - San Juan Luis Munoz Marin Intl) is currently priced at $174.

  • Can I find deals for flights from Saint Thomas Island to San Juan that include hotel bookings?

    Yes. In addition to deals on Saint Thomas Island to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Saint Thomas Island to San Juan?

    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 San Juan.

  • Can I find deals for business class flights from Saint Thomas Island to San Juan?

    Yes. Cheapflights offers flight deals from Saint Thomas Island to San Juan 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?

    Currently, September is the cheapest month in which you can book a flight from Saint Thomas Island to San Juan (average of $254). Flying from Saint Thomas Island to San Juan 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

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 San Juan

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

Top 5 airlines flying from Saint Thomas Island to San Juan

Discover the top 5 airlines that operate flights from Saint Thomas Island to San Juan. 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$24Average$60FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$52Average$140FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$58Average$77FlexibilityNo cancel feeOn-time69%
Silver AirwaysCheapest$66Average$143FlexibilityNo cancel feeOn-timeN/A
Cape AirCheapest$170Average$293FlexibilityNo 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.