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Cheap flights from Philadelphia to Saint Thomas Island from $86

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 5/19. 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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Philadelphia to Saint Thomas Island.
Frontier Logo
6:20 am - 12:15 pmPHL-STT
5h 55m1 stop
Frontier Logo
1:12 pm - 1:59 amSTT-PHL
12h 47m1 stop
$178Frontier
Find Deal
Mon, Apr 28 - Fri, May 2
Frontier Logo
9:57 pm - 12:12 pmPHL-STT
14h 15m1 stop
Frontier Logo
1:12 pm - 1:59 amSTT-PHL
12h 47m1 stop
$179Frontier
Find Deal
Sun, May 4 - Fri, May 9
Frontier Logo
6:00 am - 11:35 amPHL-STT
5h 35m1 stop
Frontier Logo
5:12 pm - 1:42 amSTT-PHL
8h 30m1 stop
$188Frontier
Find Deal
Fri, Jun 6 - Fri, Jun 13
Frontier Logo
6:20 am - 12:12 pmPHL-STT
5h 52m1 stop
Frontier Logo
1:00 pm - 1:32 amSTT-PHL
12h 32m1 stop
$198Frontier
Find Deal
Fri, May 16 - Fri, May 23
Spirit Airlines Logo
5:45 am - 2:54 pmPHL-STT
9h 09m1 stop
Spirit Airlines Logo
3:49 pm - 10:43 pmSTT-PHL
6h 54m1 stop
$206Spirit Airlines
Find Deal
Sat, May 31 - Sat, Jun 7
Spirit Airlines Logo
6:12 pm - 9:48 amPHL-STT
15h 36m1 stop
Spirit Airlines Logo
10:47 am - 10:39 pmSTT-PHL
11h 52m1 stop
$215Spirit Airlines
Find Deal
Mon, Jun 16 - Sat, Jun 21
 Logo
9:57 pm - 12:15 pmPHL-STT
14h 18m1 stop
 Logo
11:05 am - 5:52 amSTT-PHL
18h 47m2 stops
Sun, Apr 27 - Wed, Apr 30
 Logo
9:57 pm - 12:15 pmPHL-STT
14h 18m1 stop
 Logo
11:05 am - 8:46 amSTT-PHL
21h 41m1 stop
Sun, Apr 27 - Wed, Apr 30
American Airlines Logo
7:00 am - 4:30 pmPHL-STT
9h 30m2 stops
American Airlines Logo
5:20 pm - 7:34 amSTT-PHL
14h 14m2 stops
$439American Airlines
Find Deal
Mon, Sep 22 - Mon, Sep 29
American Airlines Logo
5:53 am - 3:55 pmPHL-STT
10h 02m2 stops
American Airlines Logo
4:45 pm - 9:40 amSTT-PHL
16h 55m1 stop
$459American Airlines
Find Deal
Thu, Jul 17 - Mon, Jul 21

Spirit Airlines flights from Philadelphia to Saint Thomas Island

Our best Spirit Airlines deals on Philadelphia to Saint Thomas Island flight tickets
Spirit Airlines
May 31
PHL5:45 amPhiladelphia
9h 09m
1 stop
STT2:54 pmSaint Thomas Island Cyril E King
Jun 7
STT3:49 pmSaint Thomas Island Cyril E King
6h 54m
1 stop
PHL10:43 pmPhiladelphia
Spirit Airlines
Jun 16
PHL6:12 pmPhiladelphia
15h 36m
1 stop
STT9:48 amSaint Thomas Island Cyril E King
Jun 21
STT10:47 amSaint Thomas Island Cyril E King
11h 52m
1 stop
PHL10:39 pmPhiladelphia
Spirit Airlines
May 13
PHL6:00 amPhiladelphia
27h 57m
2 stops
STT9:57 amSaint Thomas Island Cyril E King
May 19
STT2:41 pmSaint Thomas Island Cyril E King
17h 07m
1 stop
PHL7:48 amPhiladelphia

Frontier flights from Philadelphia to Saint Thomas Island

Our best Frontier deals on Philadelphia to Saint Thomas Island flight tickets
Frontier
Apr 28
PHL6:20 amPhiladelphia
5h 55m
1 stop
STT12:15 pmSaint Thomas Island Cyril E King
May 2
STT1:12 pmSaint Thomas Island Cyril E King
12h 47m
1 stop
PHL1:59 amPhiladelphia
Frontier
May 4
PHL9:57 pmPhiladelphia
14h 15m
1 stop
STT12:12 pmSaint Thomas Island Cyril E King
May 9
STT1:12 pmSaint Thomas Island Cyril E King
12h 47m
1 stop
PHL1:59 amPhiladelphia
Frontier
Jun 6
PHL6:00 amPhiladelphia
5h 35m
1 stop
STT11:35 amSaint Thomas Island Cyril E King
Jun 13
STT5:12 pmSaint Thomas Island Cyril E King
8h 30m
1 stop
PHL1:42 amPhiladelphia

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 October is another great option to travel to Saint Thomas Island, with average flight prices from Philadelphia averaging around $477.

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 $850.

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 $695. 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 6 weeks ahead of your departure date. In general, you can expect to find flights to Saint Thomas Island for around $582 when searching 6 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 $455 on momondo.

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

There are 2 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.

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

As of April 2025, prices for Philadelphia to Saint Thomas Island flights are approximately 24% cheaper 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

$86

Fastest flight time

3h 55m

Direct flights

Wed 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 $86. The best round-trip flight deal from Philadelphia to Saint Thomas Island found on momondo in the last 72 hours is $178.
The fastest flight from Philadelphia to Saint Thomas Island takes 3h 55m
Direct flights go from Philadelphia to Saint Thomas Island on Wednesday 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)

  • 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 5h 35m 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
6.0
3,281 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $205Free CancellationRating
6.3
7,926 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $392Free CancellationRating
7.4
8,667 reviews
Search United Airlines flights
American AirlinesPriceFrom $428Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $464Free CancellationRating
8.0
7,917 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.


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