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Cheap flights from Philadelphia to Saint Thomas Island from $128

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Saint Thomas Island departing on 10/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Philadelphia to Saint Thomas Island

Cheap round-trip flights

Spirit Airlines Logo
7:54 pm - 9:56 amPHL-STT
14h 02m1 stop
Spirit Airlines Logo
11:01 am - 6:49 pmSTT-PHL
7h 48m1 stop
$247Spirit Airlines
Find Deal
Sat, Oct 25 - Sat, Nov 1
Multiple Airlines Logo
5:33 am - 9:56 amPHL-STT
28h 23m1 stop
Multiple Airlines Logo
11:01 am - 2:17 pmSTT-PHL
27h 16m2 stops
$248Multiple Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 14
Multiple Airlines Logo
9:50 pm - 9:44 amPHL-STT
11h 54m1 stop
Multiple Airlines Logo
11:01 am - 2:17 pmSTT-PHL
27h 16m2 stops
$249Multiple Airlines
Find Deal
Fri, Oct 3 - Tue, Oct 14
Spirit Airlines Logo
7:54 pm - 9:56 amPHL-STT
14h 02m1 stop
Spirit Airlines Logo
11:01 am - 11:36 pmSTT-PHL
12h 35m1 stop
$259Spirit Airlines
Find Deal
Sat, Oct 25 - Sat, Nov 1
Multiple Airlines Logo
11:34 am - 9:56 amPHL-STT
22h 22m2 stops
Multiple Airlines Logo
2:04 pm - 1:13 amSTT-PHL
11h 09m1 stop
$261Multiple Airlines
Find Deal
Tue, Oct 7 - Thu, Oct 9
Spirit Airlines Logo
9:55 pm - 9:56 amPHL-STT
12h 01m1 stop
Spirit Airlines Logo
11:01 am - 12:53 pmSTT-PHL
25h 52m2 stops
$262Spirit Airlines
Find Deal
Mon, Oct 6 - Tue, Oct 14
Spirit Airlines Logo
5:20 am - 12:59 pmPHL-STT
7h 39m1 stop
Spirit Airlines Logo
2:01 pm - 9:24 pmSTT-PHL
7h 23m1 stop
$265Spirit Airlines
Find Deal
Sat, Oct 25 - Sat, Nov 1
Spirit Airlines Logo
9:50 pm - 9:44 amPHL-STT
11h 54m1 stop
Spirit Airlines Logo
11:01 am - 11:36 pmSTT-PHL
12h 35m1 stop
$268Spirit Airlines
Find Deal
Fri, Oct 3 - Tue, Oct 7
Spirit Airlines Logo
9:50 pm - 9:44 amPHL-STT
11h 54m1 stop
Spirit Airlines Logo
11:01 am - 11:36 pmSTT-PHL
12h 35m1 stop
$270Spirit Airlines
Find Deal
Fri, Oct 3 - Wed, Oct 8
Multiple Airlines Logo
5:20 am - 9:56 amPHL-STT
28h 36m2 stops
Multiple Airlines Logo
11:01 am - 2:48 pmSTT-PHL
27h 47m1 stop
$271Multiple Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22

Spirit Airlines flights from Philadelphia to Saint Thomas Island

Our best Spirit Airlines deals on Philadelphia to Saint Thomas Island flight tickets
Spirit Airlines
Oct 25
PHL7:54 pmPhiladelphia
14h 02m
1 stop
STT9:56 amSaint Thomas Island Cyril E King
Nov 1
STT11:01 amSaint Thomas Island Cyril E King
7h 48m
1 stop
PHL6:49 pmPhiladelphia
$247
Find similar
Spirit Airlines
Oct 25
PHL7:54 pmPhiladelphia
14h 02m
1 stop
STT9:56 amSaint Thomas Island Cyril E King
Nov 1
STT11:01 amSaint Thomas Island Cyril E King
12h 35m
1 stop
PHL11:36 pmPhiladelphia
$259
Find similar
Spirit Airlines
Oct 6
PHL9:55 pmPhiladelphia
12h 01m
1 stop
STT9:56 amSaint Thomas Island Cyril E King
Oct 14
STT11:01 amSaint Thomas Island Cyril E King
25h 52m
2 stops
PHL12:53 pmPhiladelphia
$262
Find similar

American Airlines flights from Philadelphia to Saint Thomas Island

Our best American Airlines deals on Philadelphia to Saint Thomas Island flight tickets
American Airlines
Sep 25
PHL6:00 amPhiladelphia
10h 00m
1 stop
STT4:00 pmSaint Thomas Island Cyril E King
Sep 29
STT5:10 pmSaint Thomas Island Cyril E King
16h 33m
1 stop
PHL9:43 amPhiladelphia
$859
Find similar
American Airlines
Sep 25
PHL6:00 amPhiladelphia
10h 00m
1 stop
STT4:00 pmSaint Thomas Island Cyril E King
Oct 4
STT5:10 pmSaint Thomas Island Cyril E King
16h 33m
1 stop
PHL9:43 amPhiladelphia
$884
Find similar
American Airlines
Sep 25
PHL8:22 amPhiladelphia
7h 38m
1 stop
STT4:00 pmSaint Thomas Island Cyril E King
Sep 28
STT5:10 pmSaint Thomas Island Cyril E King
16h 33m
1 stop
PHL9:43 amPhiladelphia
$939
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Philadelphia to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Sat 10/25

7:54 pm-9:56 am

1 stop14h 02m

Saint Thomas Island Cyril E King

Sat 11/1

11:01 am-6:49 pm

1 stop7h 48m

$247

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Tue 10/7

5:33 am-9:56 am

1 stop28h 23m

Saint Thomas Island Cyril E King

Tue 10/14

11:01 am-2:17 pm

2 stops27h 16m

$248

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Fri 10/3

9:50 pm-9:44 am

1 stop11h 54m

Saint Thomas Island Cyril E King

Tue 10/14

11:01 am-2:17 pm

2 stops27h 16m

$249

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Sat 10/25

7:54 pm-9:56 am

1 stop14h 02m

Saint Thomas Island Cyril E King

Sat 11/1

11:01 am-11:36 pm

1 stop12h 35m

$259

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Tue 10/7

11:34 am-9:56 am

2 stops22h 22m

Saint Thomas Island Cyril E King

Thu 10/9

2:04 pm-1:13 am

1 stop11h 09m

$261

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Mon 10/6

9:55 pm-9:56 am

1 stop12h 01m

Saint Thomas Island Cyril E King

Tue 10/14

11:01 am-12:53 pm

2 stops25h 52m

$262

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Sat 10/25

5:20 am-12:59 pm

1 stop7h 39m

Saint Thomas Island Cyril E King

Sat 11/1

2:01 pm-9:24 pm

1 stop7h 23m

$265

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Fri 10/3

9:50 pm-9:44 am

1 stop11h 54m

Saint Thomas Island Cyril E King

Tue 10/7

11:01 am-11:36 pm

1 stop12h 35m

$268

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Fri 10/3

9:50 pm-9:44 am

1 stop11h 54m

Saint Thomas Island Cyril E King

Wed 10/8

11:01 am-11:36 pm

1 stop12h 35m

$270

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Wed 10/15

5:20 am-9:56 am

2 stops28h 36m

Saint Thomas Island Cyril E King

Wed 10/22

11:01 am-2:48 pm

1 stop27h 47m

$271

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Saint Thomas Island from

How to get the cheapest flight ticket from Philadelphia to Saint Thomas Island

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Saint Thomas Island?

The month of May is another great option to travel to Saint Thomas Island, with average flight prices from Philadelphia averaging around $519.

What is the cheapest day to depart on your flight to Saint Thomas Island?

On average, the least expensive day to fly to Saint Thomas Island from Philadelphia is on a Sunday. momondo users have found tickets for Sunday departures for as low as $603. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Saint Thomas Island for around $899.

What is the cheapest time of day to depart on your flight to Saint Thomas Island?

The cheapest time of day to fly to Saint Thomas Island is in the evening when flights can be purchased for as low as $341. Flights to Saint Thomas Island are more costly in the morning, with an average ticket price of $705. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Philadelphia to Saint Thomas Island Cyril E King flight route?

Fly from Philadelphia to Saint Thomas Island Cyril E King for the best Philadelphia - Saint Thomas Island Cyril E King flight prices

How far in advance should I book a flight to Saint Thomas Island?

You are more likely to see cheaper flights to Saint Thomas Island from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Saint Thomas Island for around $580 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Saint Thomas Island from Philadelphia for as low as $460 on momondo.

What cabin class options are available on Philadelphia to Saint Thomas Island Cyril E King flights?

There is only 1 cabin class available to choose from on Philadelphia to Saint Thomas Island Cyril E King flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to Saint Thomas Island flights?

You could potentially save up to 46% on your flight if you consider stops on a Philadelphia to Saint Thomas Island flight.

How have Philadelphia to Saint Thomas Island flight prices changed over time?

As of September 2025, prices for Philadelphia to Saint Thomas Island flights are approximately 219% more expensive when compared to flights at the same time last year.

When to book flights from Philadelphia to Saint Thomas Island

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Saint Thomas Island according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Philadelphia to Saint Thomas Island (PHL to STT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Saint Thomas Island

Best Price Found

$760

Fastest flight time

3h 50m

Direct flights

Every day

Airports in Saint Thomas Island

1 airport
The best flight deal from Philadelphia to Saint Thomas Island found on momondo in the last 72 hours is $760
The fastest flight from Philadelphia to Saint Thomas Island takes 3h 50m
Direct flights go from Philadelphia to Saint Thomas Island every day.
There is 1 airport near Saint Thomas Island: Saint Thomas Island Cyril E King (STT)
Search flight deals

  • How far is Philadelphia to Saint Thomas Island Cyril E King by plane?

    Philadelphia and Saint Thomas Island Cyril E King are 1611.8 mi apart from one another. Typically, this will take 7h 11m by plane in normal conditions.

  • When did momondo last update prices for flights from Philadelphia Airport to Saint Thomas Island Cyril E King Airport?

    Prices for flights from Philadelphia Airport to Saint Thomas Island Cyril E King Airport were last updated today.

  • How many operators does momondo search for flights from Philadelphia Airport to Saint Thomas Island Cyril E King Airport?

  • How old do you have to be to fly from Philadelphia Airport to Saint Thomas Island Cyril E King Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Saint Thomas Island Cyril E King Airport.

  • What documentation or ID do you need to fly to Saint Thomas Island Cyril E King Airport?

    The travel and health documents required for your trip to Saint Thomas Island Cyril E King Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Saint Thomas Island Cyril E King Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Philadelphia to Saint Thomas Island?

  • What is the most popular airline from Philadelphia to Saint Thomas Island?

Best airlines flying from Philadelphia to Saint Thomas Island

Compare and see reviews for airlines that fly from Philadelphia to Saint Thomas Island with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $108Free CancellationRating
5.8
3,174 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $227Free CancellationRating
6.3
8,019 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $437Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $464Free CancellationRating
7.9
7,957 reviews
Search Delta flights
United AirlinesPriceFrom $527Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights

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

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Saint Thomas Island?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to Saint Thomas Island. momondo saves you time and could save you money on your trip.

Can I find flights from Philadelphia to Saint Thomas Island with flexible booking policies on momondo?

All flight searches from Philadelphia to Saint Thomas Island on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Philadelphia to Saint Thomas Island?

Once all potential Philadelphia to Saint Thomas Island flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Philadelphia to Saint Thomas Island right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Philadelphia to Saint Thomas Island now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Saint Thomas Island and let you know when they change.

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