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$67+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
STT — SJU
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from Saint Thomas Island Cyril E King to San Juan are usually found in November or September, booked 57 days in advance, depart on a Friday or Wednesday 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 March 28, 2025.

Round-trip from

$92
(Frontier)

One-way from

$67
(Trip.com)

Popular in

January

Cheapest in

November

Average price

$102
From Saint Thomas Island Cyril E King to San Juan
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One-way flight from Saint Thomas Island Cyril E King to San Juan
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Highest demand for flights based on searches. 11% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($2 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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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 March 28, 2025.

This Frontier deal was found by Cheapflights users on 3/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/111:10 pmSTT - SJU
Nonstop1h 02mFrontier
Mon 4/1411:25 amSJU - STT
Nonstop0h 55mFrontier
Deal found 3/26$92
This Trip.com deal was found by Cheapflights users on 3/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/66:05 pmSTT - SJU
Nonstop0h 35mMultiple Airlines
Mon 4/711:25 amSJU - STT
Nonstop0h 55mMultiple Airlines
Deal found 3/27$116
This JetBlue deal was found by Cheapflights users on 3/27. 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.
Mon 4/73:26 pmSTT - SJU
Nonstop0h 56mJetBlue
Thu 4/101:50 pmSJU - STT
Nonstop0h 41mJetBlue
Deal found 3/27$119
This Trip.com deal was found by Cheapflights users on 3/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:05 pmSTT - SJU
Nonstop0h 35mSilver Airways
Sun 5/48:00 amSJU - STT
Nonstop0h 35mSilver Airways
Deal found 3/27$145
This FlightHub deal was found by Cheapflights users on 3/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1010:52 amSTT - SJU
1 stop8h 15mSpirit Airlines
Mon 5/128:12 pmSJU - STT
1 stop13h 45mSpirit Airlines
Deal found 3/27$218
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/19:10 amSTT - SJU
Nonstop0h 35mUnited Airlines
Fri 5/21:05 amSJU - STT
1 stop12h 03mUnited Airlines
Deal found 3/27$982

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 March 28, 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

Fri 4/11

1:10 pm-2:12 pm

Nonstop1h 02m

San Juan Luis Munoz Marin Intl

Mon 4/14

11:25 am-12:20 pm

Nonstop0h 55m

$92

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Sun 4/6

6:05 pm-6:40 pm

Nonstop0h 35m

San Juan Luis Munoz Marin Intl

Mon 4/7

11:25 am-12:20 pm

Nonstop0h 55m

$116

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Mon 4/7

3:26 pm-4:22 pm

Nonstop0h 56m

San Juan Luis Munoz Marin Intl

Thu 4/10

1:50 pm-2:31 pm

Nonstop0h 41m

$119

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Thu 5/1

6:05 pm-6:40 pm

Nonstop0h 35m

San Juan Luis Munoz Marin Intl

Sun 5/4

8:00 am-8:35 am

Nonstop0h 35m

$145

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Sat 5/10

10:52 am-7:07 pm

1 stop8h 15m

San Juan Luis Munoz Marin Intl

Mon 5/12

8:12 pm-9:57 am

1 stop13h 45m

$218

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Thu 5/1

9:10 am-9:45 am

Nonstop0h 35m

San Juan Luis Munoz Marin Intl

Fri 5/2

1:05 am-1:08 pm

1 stop12h 03m

$982

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Tue 5/20

9:10 am-9:45 am

Nonstop0h 35m

$67

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Wed 5/21

4:48 pm-5:34 pm

Nonstop0h 46m

$70

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Mon 5/26

1:00 pm-1:59 pm

Nonstop0h 59m

$82

Saint Thomas IslandSan Juan

STT - SJU

STTSJU

Saint Thomas Island Cyril E King

Sat 7/5

6:05 pm-6:40 pm

Nonstop0h 35m

$90

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 13 results
1
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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 March 21, 2025.

Booking 57 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 December is currently the most expensive (average of $336). 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 March 28, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 55% 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 March 28, 2025.

The most flights from STT to PR1 are scheduled on a Friday (24 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (17 on average).

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan 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 when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, 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 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 March 28, 2025.
Read through reviews of airlines operating flights from Saint Thomas Island to San Juan, such as United Airlines, JetBlue and Spirit Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,603 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Overall

7.4

Food

6.6

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
8,603 reviews
United Airlines
7.4
Good
8,603 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Overall

7.4

Food

6.6

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
2,923 reviews
United Airlines
7.4
Good
8,603 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Overall

7.4

Food

6.6

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
7,881 reviews
United Airlines
7.4
Good
8,603 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Overall

7.4

Food

6.6

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
3,271 reviews
United Airlines
7.4
Good
8,603 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Overall

7.4

Food

6.6

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 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 19 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 ($92), JetBlue ($119), and Silver Airways ($145) offers the cheapest pricing from Saint Thomas Island to San Juan.

  • What are the cheapest airlines to fly from Saint Thomas Island to San Juan one-way?

    The cheapest airlines for a one-way flight from Saint Thomas Island to San Juan are Silver Airways ($67), JetBlue ($70), and Frontier ($82).

  • 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: Sun Country Air (85%), Frontier (77%), Silver Airways( 72%).

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

    On average you can expect to pay $173 for a flight from Saint Thomas Island to San Juan. The cheapest flight overall is $28 while the most popular route, (Saint Thomas Island Cyril E King - San Juan Luis Munoz Marin Intl) is currently priced at $116.

  • 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 December is currently the most expensive (average of $336). 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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Alternative routes for Saint Thomas Island to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
Saint Thomas Island to Luis Munoz Marin Intl flights
Christiansted 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$22Average$59FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$45Average$107FlexibilityNo cancel feeOn-time62%
Silver AirwaysCheapest$56Average$103FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$58Average$77FlexibilityNo cancel feeOn-time69%
Cape AirCheapest$189Average$259FlexibilityNo cancel feeOn-time63%
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