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Cheap flights from Philadelphia to Saint Thomas Island from $117

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 11/17. 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
8:41 pm - 1:48 pmPHL-STT
17h 07m2 stops
Spirit Airlines Logo
10:49 am - 11:47 pmSTT-PHL
12h 58m1 stop
$223Spirit Airlines
Find Deal
tis, sep 2 - tis, sep 9
Spirit Airlines Logo
9:55 pm - 9:44 amPHL-STT
11h 49m1 stop
Spirit Airlines Logo
4:24 pm - 11:59 pmSTT-PHL
7h 35m1 stop
$228Spirit Airlines
Find Deal
mån, sep 22 - mån, sep 29
Spirit Airlines Logo
5:30 am - 2:57 pmPHL-STT
9h 27m1 stop
Spirit Airlines Logo
4:02 pm - 11:59 pmSTT-PHL
7h 57m1 stop
$239Spirit Airlines
Find Deal
mån, sep 15 - fre, sep 19
Spirit Airlines Logo
5:45 am - 1:48 pmPHL-STT
8h 03m1 stop
Spirit Airlines Logo
10:49 am - 11:47 pmSTT-PHL
12h 58m1 stop
$242Spirit Airlines
Find Deal
tis, sep 2 - tis, sep 9
Spirit Airlines Logo
2:06 pm - 1:48 pmPHL-STT
23h 42m2 stops
Spirit Airlines Logo
12:18 pm - 11:20 pmSTT-PHL
11h 02m1 stop
$247Spirit Airlines
Find Deal
lör, aug 23 - lör, aug 30
Spirit Airlines Logo
5:05 am - 11:13 amPHL-STT
6h 08m1 stop
Spirit Airlines Logo
10:49 am - 11:59 pmSTT-PHL
13h 10m1 stop
$248Spirit Airlines
Find Deal
tors, aug 28 - tors, sep 4
Spirit Airlines Logo
8:41 pm - 1:48 pmPHL-STT
17h 07m2 stops
Spirit Airlines Logo
10:49 am - 1:02 pmSTT-PHL
26h 13m2 stops
$249Spirit Airlines
Find Deal
tis, sep 2 - tis, sep 9
Spirit Airlines Logo
5:30 am - 12:56 pmPHL-STT
7h 26m1 stop
Spirit Airlines Logo
2:01 pm - 11:59 pmSTT-PHL
9h 58m1 stop
$253Spirit Airlines
Find Deal
lör, okt 25 - lör, nov 1
Spirit Airlines Logo
2:06 pm - 1:48 pmPHL-STT
23h 42m2 stops
Spirit Airlines Logo
2:43 pm - 9:56 amSTT-PHL
19h 13m2 stops
$258Spirit Airlines
Find Deal
lör, aug 23 - lör, aug 30
Frontier Logo
6:00 am - 4:29 pmPHL-STT
10h 29m1 stop
Frontier Logo
5:14 pm - 1:45 amSTT-PHL
8h 31m1 stop
$278Frontier
Find Deal
fre, aug 15 - mån, aug 18

Spirit Airlines flights from Philadelphia to Saint Thomas Island

Our best Spirit Airlines deals on Philadelphia to Saint Thomas Island flight tickets
Spirit Airlines
Sep 2
PHL8:41 pmPhiladelphia
17h 07m
2 stops
STT1:48 pmSaint Thomas Island Cyril E King
Sep 9
STT10:49 amSaint Thomas Island Cyril E King
12h 58m
1 stop
PHL11:47 pmPhiladelphia
$223
Find similar
Spirit Airlines
Sep 22
PHL9:55 pmPhiladelphia
11h 49m
1 stop
STT9:44 amSaint Thomas Island Cyril E King
Sep 29
STT4:24 pmSaint Thomas Island Cyril E King
7h 35m
1 stop
PHL11:59 pmPhiladelphia
$228
Find similar
Spirit Airlines
Sep 15
PHL5:30 amPhiladelphia
9h 27m
1 stop
STT2:57 pmSaint Thomas Island Cyril E King
Sep 19
STT4:02 pmSaint Thomas Island Cyril E King
7h 57m
1 stop
PHL11:59 pmPhiladelphia
$239
Find similar

Frontier flights from Philadelphia to Saint Thomas Island

Our best Frontier deals on Philadelphia to Saint Thomas Island flight tickets
Frontier
Aug 7
PHL8:05 pmPhiladelphia
20h 24m
1 stop
STT4:29 pmSaint Thomas Island Cyril E King
Aug 11
STT5:14 pmSaint Thomas Island Cyril E King
8h 31m
1 stop
PHL1:45 amPhiladelphia
$208
Find similar
Frontier
Aug 8
PHL6:00 amPhiladelphia
10h 29m
1 stop
STT4:29 pmSaint Thomas Island Cyril E King
Aug 11
STT5:14 pmSaint Thomas Island Cyril E King
8h 31m
1 stop
PHL1:45 amPhiladelphia
$221
Find similar
Frontier
Aug 10
PHL8:05 pmPhiladelphia
20h 24m
1 stop
STT4:29 pmSaint Thomas Island Cyril E King
Aug 15
STT5:14 pmSaint Thomas Island Cyril E King
8h 31m
1 stop
PHL1:45 amPhiladelphia
$237
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 augusti 1, 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

tis 9/2

8:41 pm-1:48 pm

2 stops17h 07m

Saint Thomas Island Cyril E King

tis 9/9

10:49 am-11:47 pm

1 stop12h 58m

$223

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

mån 9/22

9:55 pm-9:44 am

1 stop11h 49m

Saint Thomas Island Cyril E King

mån 9/29

4:24 pm-11:59 pm

1 stop7h 35m

$228

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

mån 9/15

5:30 am-2:57 pm

1 stop9h 27m

Saint Thomas Island Cyril E King

fre 9/19

4:02 pm-11:59 pm

1 stop7h 57m

$239

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

tis 9/2

5:45 am-1:48 pm

1 stop8h 03m

Saint Thomas Island Cyril E King

tis 9/9

10:49 am-11:47 pm

1 stop12h 58m

$242

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

lör 8/23

2:06 pm-1:48 pm

2 stops23h 42m

Saint Thomas Island Cyril E King

lör 8/30

12:18 pm-11:20 pm

1 stop11h 02m

$247

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

tors 8/28

5:05 am-11:13 am

1 stop6h 08m

Saint Thomas Island Cyril E King

tors 9/4

10:49 am-11:59 pm

1 stop13h 10m

$248

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

tis 9/2

8:41 pm-1:48 pm

2 stops17h 07m

Saint Thomas Island Cyril E King

tis 9/9

10:49 am-1:02 pm

2 stops26h 13m

$249

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

lör 10/25

5:30 am-12:56 pm

1 stop7h 26m

Saint Thomas Island Cyril E King

lör 11/1

2:01 pm-11:59 pm

1 stop9h 58m

$253

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

lör 8/23

2:06 pm-1:48 pm

2 stops23h 42m

Saint Thomas Island Cyril E King

lör 8/30

2:43 pm-9:56 am

2 stops19h 13m

$258

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

fre 8/15

6:00 am-4:29 pm

1 stop10h 29m

Saint Thomas Island Cyril E King

mån 8/18

5:14 pm-1:45 am

1 stop8h 31m

$278

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 typical price of a round-trip flight between Philadelphia and Saint Thomas Island?

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

The month of October is another great option to travel to Saint Thomas Island, with average flight prices from Philadelphia averaging around $467.

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 Wednesday. momondo users have found tickets for Wednesday departures for as low as $568. 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 $902.

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 $698. 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 $570 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 $439 on momondo.

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

There are 1 cabin classes 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 9% 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 August 2025, prices for Philadelphia to Saint Thomas Island flights are approximately 43% 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

$117

Fastest flight time

3h 55m

Direct flights

Mon, Tue, Wed, Sat and Sun

Airports in Saint Thomas Island

1 airport
The best one-way flight to Saint Thomas Island from Philadelphia in the past 72 hours is $117. The best round-trip flight deal from Philadelphia to Saint Thomas Island found on momondo in the last 72 hours is $223.
The fastest flight from Philadelphia to Saint Thomas Island takes 3h 55m
Direct flights go from Philadelphia to Saint Thomas Island on Monday, Tuesday, Wednesday, Saturday and Sunday. The only airline offering direct flights is American Airlines.
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 6h 08m 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
5.9
3,239 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $218Free CancellationRating
6.3
8,048 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $433Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $464Free CancellationRating
8.0
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $527Free CancellationRating
7.4
8,900 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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