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Cheap flights from Philadelphia to Saint Thomas Island from $112

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 3/17. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:00 am - 4:37 pm
PHL
-
STT
9h 37m1 stop
Multiple Airlines Logo
2:01 pm - 10:45 pm
STT
-
PHL
9h 44m2 stops
$250Multiple Airlines
Tue, Feb 10 - Wed, Feb 18
Spirit Airlines Logo
5:30 am - 2:52 pm
PHL
-
STT
8h 22m1 stop
Spirit Airlines Logo
3:57 pm - 10:03 pm
STT
-
PHL
7h 06m1 stop
$253Spirit Airlines
Sun, Jan 11 - Fri, Jan 16
Spirit Airlines Logo
6:00 am - 4:37 pm
PHL
-
STT
9h 37m1 stop
Spirit Airlines Logo
5:40 pm - 8:44 am
STT
-
PHL
16h 04m1 stop
$256Spirit Airlines
Tue, Feb 10 - Wed, Feb 18
Spirit Airlines Logo
6:00 am - 4:37 pm
PHL
-
STT
9h 37m1 stop
Spirit Airlines Logo
5:40 pm - 8:44 am
STT
-
PHL
16h 04m1 stop
$257Spirit Airlines
Tue, Feb 10 - Wed, Feb 18
Multiple Airlines Logo
7:59 pm - 4:34 pm
PHL
-
STT
19h 35m1 stop
Multiple Airlines Logo
5:40 pm - 9:53 am
STT
-
PHL
17h 13m1 stop
$259Multiple Airlines
Tue, Feb 17 - Tue, Feb 24
Multiple Airlines Logo
8:40 am - 4:54 pm
PHL
-
STT
7h 14m1 stop
Multiple Airlines Logo
3:57 pm - 10:03 pm
STT
-
PHL
7h 06m1 stop
$260Multiple Airlines
Sat, Jan 17 - Sat, Jan 24
Multiple Airlines Logo
3:48 pm - 4:34 pm
PHL
-
STT
23h 46m1 stop
Multiple Airlines Logo
5:40 pm - 12:21 am
STT
-
PHL
7h 41m1 stop
$262Multiple Airlines
Fri, Feb 20 - Sat, Feb 28
Multiple Airlines Logo
5:30 am - 2:52 pm
PHL
-
STT
8h 22m1 stop
Multiple Airlines Logo
2:01 pm - 10:45 pm
STT
-
PHL
9h 44m2 stops
$264Multiple Airlines
Wed, Feb 11 - Tue, Feb 17
Multiple Airlines Logo
8:06 am - 4:34 pm
PHL
-
STT
7h 28m1 stop
Multiple Airlines Logo
5:40 pm - 4:50 pm
STT
-
PHL
24h 10m1 stop
$270Multiple Airlines
Sat, Feb 21 - Wed, Feb 25
Spirit Airlines Logo
5:30 am - 2:52 pm
PHL
-
STT
8h 22m1 stop
Spirit Airlines Logo
5:42 pm - 11:50 pm
STT
-
PHL
7h 08m1 stop
$274Spirit Airlines
Sat, Jan 31 - Sat, Feb 7

Spirit Airlines flights from Philadelphia to Saint Thomas Island

Our best Spirit Airlines deals on Philadelphia to Saint Thomas Island flight tickets
Spirit Airlines
Feb 18
PHL5:30 amPhiladelphia
8h 01m
1 stop
STT2:31 pmSaint Thomas Island Cyril E King
Feb 21
STT3:36 pmSaint Thomas Island Cyril E King
6h 49m
1 stop
PHL9:25 pmPhiladelphia
$253
Find similar
Spirit Airlines
Feb 10
PHL6:00 amPhiladelphia
9h 37m
1 stop
STT4:37 pmSaint Thomas Island Cyril E King
Feb 18
STT5:40 pmSaint Thomas Island Cyril E King
16h 04m
1 stop
PHL8:44 amPhiladelphia
$257
Find similar
Spirit Airlines
Jan 31
PHL5:30 amPhiladelphia
8h 22m
1 stop
STT2:52 pmSaint Thomas Island Cyril E King
Feb 7
STT5:42 pmSaint Thomas Island Cyril E King
7h 08m
1 stop
PHL11:50 pmPhiladelphia
$274
Find similar

United Airlines flights from Philadelphia to Saint Thomas Island

Our best United Airlines deals on Philadelphia to Saint Thomas Island flight tickets
United Airlines
Dec 23
PHL2:50 pmPhiladelphia
25h 52m
1 stop
STT5:42 pmSaint Thomas Island Cyril E King
Dec 30
STT3:05 pmSaint Thomas Island Cyril E King
19h 50m
2 stops
PHL9:55 amPhiladelphia
$618
Find similar
United Airlines
Dec 24
PHL6:00 amPhiladelphia
10h 42m
1 stop
STT5:42 pmSaint Thomas Island Cyril E King
Dec 30
STT3:05 pmSaint Thomas Island Cyril E King
19h 50m
2 stops
PHL9:55 amPhiladelphia
$625
Find similar
United Airlines
Dec 24
PHL2:50 pmPhiladelphia
24h 28m
2 stops
STT4:18 pmSaint Thomas Island Cyril E King
Dec 30
STT3:05 pmSaint Thomas Island Cyril E King
19h 50m
2 stops
PHL9:55 amPhiladelphia
$650
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 December 18, 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

Tue 2/10

6:00 am-4:37 pm

1 stop9h 37m

Saint Thomas Island Cyril E King

Wed 2/18

2:01 pm-10:45 pm

2 stops9h 44m

$250

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Sun 1/11

5:30 am-2:52 pm

1 stop8h 22m

Saint Thomas Island Cyril E King

Fri 1/16

3:57 pm-10:03 pm

1 stop7h 06m

$253

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Tue 2/10

6:00 am-4:37 pm

1 stop9h 37m

Saint Thomas Island Cyril E King

Wed 2/18

5:40 pm-8:44 am

1 stop16h 04m

$256

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Tue 2/10

6:00 am-4:37 pm

1 stop9h 37m

Saint Thomas Island Cyril E King

Wed 2/18

5:40 pm-8:44 am

1 stop16h 04m

$257

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Tue 2/17

7:59 pm-4:34 pm

1 stop19h 35m

Saint Thomas Island Cyril E King

Tue 2/24

5:40 pm-9:53 am

1 stop17h 13m

$259

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Sat 1/17

8:40 am-4:54 pm

1 stop7h 14m

Saint Thomas Island Cyril E King

Sat 1/24

3:57 pm-10:03 pm

1 stop7h 06m

$260

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Fri 2/20

3:48 pm-4:34 pm

1 stop23h 46m

Saint Thomas Island Cyril E King

Sat 2/28

5:40 pm-12:21 am

1 stop7h 41m

$262

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Wed 2/11

5:30 am-2:52 pm

1 stop8h 22m

Saint Thomas Island Cyril E King

Tue 2/17

2:01 pm-10:45 pm

2 stops9h 44m

$264

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Sat 2/21

8:06 am-4:34 pm

1 stop7h 28m

Saint Thomas Island Cyril E King

Wed 2/25

5:40 pm-4:50 pm

1 stop24h 10m

$270

PhiladelphiaSaint Thomas Island

PHL - STT

PHLSTT

Philadelphia

Sat 1/31

5:30 am-2:52 pm

1 stop8h 22m

Saint Thomas Island Cyril E King

Sat 2/7

5:42 pm-11:50 pm

1 stop7h 08m

$274

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 $507.

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 Monday. momondo users have found tickets for Monday departures for as low as $665. 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 $918.

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 $754. 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 $624 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 $502 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 32% 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 December 2025, prices for Philadelphia to Saint Thomas Island flights are approximately 6% 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

$323

Fastest flight time

3h 58m

Direct flights

Every day

Airports in Saint Thomas Island

1 airport
The best one-way flight to Saint Thomas Island from Philadelphia in the past 72 hours is $323. The best round-trip flight deal from Philadelphia to Saint Thomas Island found on momondo in the last 72 hours is $670.
The fastest flight from Philadelphia to Saint Thomas Island takes 3h 58m
Direct flights go from Philadelphia to Saint Thomas Island every day.
There is 1 airport in Saint Thomas Island. From Philadelphia there are direct flights to 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 3h 58m 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
3,081 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $225Free CancellationRating
6.3
8,190 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $469Free CancellationRating
7.2
11,055 reviews
Search American Airlines flights
United AirlinesPriceFrom $493Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
DeltaPriceFrom $512Free CancellationRating
7.9
8,008 reviews
Search Delta 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.

An easier way to manage your Saint Thomas Island trip

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