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Saint Thomas Island

$125+ Cheap flights from Philadelphia (PHL) to Saint Thomas Island (STT)

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — STT
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Saint Thomas Island Cyril E King are usually found in September or October, booked 33 days in advance, depart on a Monday or Sunday and return on a Wednesday

Cheap flight deals from Philadelphia to Saint Thomas Island

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Saint Thomas Island (STT). 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 agosto 14, 2025.

Round-trip from

$226
(FlightHub)

One-way from

$125
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$579

Good round-trip deal

$574 or less
From Philadelphia to Saint Thomas Island Cyril E King
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One-way flight from Philadelphia to Saint Thomas Island Cyril E King
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Highest demand for flights based on searches. 3% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Philadelphia to Saint Thomas Island Cyril E King.
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Find flight deals from Philadelphia to Saint Thomas Island

Cheapest flights from Philadelphia to Saint Thomas Island
Explore the most affordable flight options available from Philadelphia to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 14, 2025.

This FlightHub deal was found by Cheapflights users on 8/13. 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.
mar. 9/28:41 pmPHL - STT
2 stops17h 07mSpirit Airlines
dom. 9/710:49 amSTT - PHL
1 stop13h 28mSpirit Airlines
Deal found 8/13$226
This FlightHub deal was found by Cheapflights users on 8/14. 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.
sáb. 10/181:00 pmPHL - STT
2 stops23h 59mSpirit Airlines
sáb. 10/252:01 pmSTT - PHL
1 stop9h 46mSpirit Airlines
Deal found 8/14$255
This FlightHub deal was found by Cheapflights users on 8/11. 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.
mié. 9/34:58 pmPHL - STT
1 stop16h 46mSpirit Airlines
lun. 9/154:02 pmSTT - PHL
1 stop7h 57mSpirit Airlines
Deal found 8/11$258
This FlightHub deal was found by Cheapflights users on 8/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/118:50 pmPHL - STT
1 stop16h 06mSpirit Airlines
jue. 10/162:01 pmSTT - PHL
1 stop10h 34mSpirit Airlines
Deal found 8/12$260
This FlightHub deal was found by Cheapflights users on 8/14. 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.
sáb. 10/111:00 pmPHL - STT
2 stops23h 59mSpirit Airlines
sáb. 10/1811:01 amSTT - PHL
1 stop7h 35mSpirit Airlines
Deal found 8/14$262
This CheapOair deal was found by Cheapflights users on 8/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/25:45 amPHL - STT
1 stop8h 03mSpirit Airlines
mar. 9/910:49 amSTT - PHL
1 stop12h 58mSpirit Airlines
Deal found 8/12$265
This FlightHub deal was found by Cheapflights users on 8/14. 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.
mié. 10/2212:00 pmPHL - STT
2 stops24h 59mSpirit Airlines
dom. 10/262:40 pmSTT - PHL
2 stops9h 55mSpirit Airlines
Deal found 8/14$267
This Cheapflightsfares deal was found by Cheapflights users on 8/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/257:41 pmPHL - STT
1 stop14h 08mSpirit Airlines
sáb. 11/110:54 amSTT - PHL
1 stop7h 42mSpirit Airlines
Deal found 8/13$270

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Saint Thomas Island 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 agosto 14, 2025.
Use the filters below to find and compare flights from Philadelphia to Saint Thomas Island that are best for you.

Fly from

Philadelphia

Fly to

Saint Thomas Island

Route

Depart

Return

Price

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

mar. 9/2

8:41 pm-1:48 pm

2 stops17h 07m

Saint Thomas Island Cyril E King

dom. 9/7

10:49 am-12:17 am

1 stop13h 28m

$226

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

sáb. 10/25

1:00 pm-1:35 pm

2 stops24h 35m

Saint Thomas Island Cyril E King

sáb. 11/1

2:01 pm-11:47 pm

1 stop9h 46m

$255

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

sáb. 10/18

1:00 pm-12:59 pm

2 stops23h 59m

Saint Thomas Island Cyril E King

sáb. 10/25

2:01 pm-11:47 pm

1 stop9h 46m

$255

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

dom. 10/19

5:30 am-12:59 pm

1 stop7h 29m

Saint Thomas Island Cyril E King

dom. 10/26

10:54 am-12:35 am

1 stop13h 41m

$259

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

sáb. 10/11

8:50 pm-12:59 pm

1 stop16h 09m

Saint Thomas Island Cyril E King

sáb. 10/18

2:01 pm-11:47 pm

1 stop9h 46m

$259

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

mié. 10/29

12:00 pm-1:35 pm

2 stops25h 35m

Saint Thomas Island Cyril E King

sáb. 11/1

2:01 pm-11:47 pm

1 stop9h 46m

$262

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

lun. 9/22

5:30 am-2:57 pm

1 stop9h 27m

Saint Thomas Island Cyril E King

sáb. 9/27

10:49 am-11:47 pm

1 stop12h 58m

$266

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

mar. 9/2

8:41 pm-1:48 pm

2 stops17h 07m

$125

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

sáb. 9/13

2:30 pm-9:44 am

2 stops19h 14m

$134

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

jue. 11/13

5:15 am-12:28 pm

1 stop6h 13m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 15 results
1
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Best time to book a flight from Philadelphia to Saint Thomas Island

Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island from Philadelphia 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 Philadelphia to Saint Thomas Island

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

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

The price you pay for your flight from Philadelphia to Saint Thomas Island may vary depending on when you book. For the best chance of a lower fare, look to book 33 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from Philadelphia to Saint Thomas Island (average of $433). Flying from Philadelphia to Saint Thomas Island in June is currently the most expensive (average of $648). 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 PHL to STT?

Find hourly flight availability from Philadelphia to Saint Thomas Island. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

When flying from Philadelphia to Saint Thomas Island, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 52% versus a flight in the morning.

What’s the top layover airport for flights from Philadelphia to Saint Thomas Island?

Share of 1-stop round-trip flights from Philadelphia to Saint Thomas Island chosen by Cheapflights users in the past 12 months, using the same layover each way.

Orlando (MCO) – chosen by Cheapflights users on 63% of 1-stop itineraries from Philadelphia to Saint Thomas Island on Cheapflights.

What’s the cheapest layover airport for flights from Philadelphia to Saint Thomas Island?

Average round-trip fare for 1-stop flights from Philadelphia to Saint Thomas Island, chosen by Cheapflights users in the past 12 months, with the same layover each way.

San Juan (SJU) is the most affordable 1-stop option, with an average round-trip price of $179.

What’s the fastest layover option from Philadelphia to Saint Thomas Island?

Shortest average travel time for 1-stop one-way flights from Philadelphia to Saint Thomas Island, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via San Juan (SJU) have the shortest average one-way travel time for 1-stop routes: 7h 52m.

Which airport typically offers the quickest layover for flights from Philadelphia to Saint Thomas Island?

Average layover duration for 1-stop one-way flights from Philadelphia to Saint Thomas Island, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Orlando (MCO) offer the fastest connection on this route, with an average layover time of 1h 58m.

Reviews of airlines servicing Saint Thomas Island

Get insights into the airlines that provide service to Saint Thomas Island. 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 Saint Thomas Island. Reviews last updated agosto 14, 2025.
Read through reviews of airlines operating flights from Philadelphia to Saint Thomas Island, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Spirit Airlines
6.3
Okay
8,046 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.8
Fair
3,217 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

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

    Our cheapest airline available from Philadelphia to Saint Thomas Island is Frontier. Our recent data shows that you can find tickets from as low as $108 on this airline. Additional options worth looking into are Spirit Airlines and American Airlines, starting at $222 and $432 round-trip. Frontier is currently priced 81% below the average price you’ll pay for this route.

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

    On average you can expect to pay $710 for a flight from Philadelphia to Saint Thomas Island. The cheapest flight overall is $570 while the most popular route, (Philadelphia - Saint Thomas Island Cyril E King) is currently priced at $259.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Philadelphia to Saint Thomas Island (average of $433). Flying from Philadelphia to Saint Thomas Island in June is currently the most expensive (average of $648). 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
St. John

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Alternative routes for Philadelphia to Saint Thomas Island

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Philadelphia to Saint Thomas Island

Discover the top 5 airlines that operate flights from Philadelphia to Saint Thomas Island. 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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$196FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$222Average$368FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$432Average$666FlexibilityNo cancel feeOn-time71%
DeltaCheapest$464Average$724FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$527Average$752FlexibilityNo cancel feeOn-time69%

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