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Cheap flights from Philadelphia to Saint Thomas Island from $209

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 10/3. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Philadelphia to Saint Thomas Island

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
11:53 am - 2:01 pmPHL  Philadelphia-STT Saint Thomas Island Cyril E King
26h 08m1 stop San Juan Luis Munoz Marin Intl
JetBlue Logo
3:00 pm - 11:03 amSTT  Saint Thomas Island Cyril E King-PHL Philadelphia
20h 03m1 stop San Juan Luis Munoz Marin Intl
$408JetBlue
Mon, Sep 14 - Mon, Sep 21
JetBlue Logo
11:53 am - 2:01 pmPHL  Philadelphia-STT Saint Thomas Island Cyril E King
26h 08m1 stop San Juan Luis Munoz Marin Intl
JetBlue Logo
3:00 pm - 11:03 amSTT  Saint Thomas Island Cyril E King-PHL Philadelphia
20h 03m1 stop San Juan Luis Munoz Marin Intl
$408JetBlue
Sun, Sep 20 - Thu, Sep 24
American Airlines Logo
8:15 pm - 5:05 pmPHL  Philadelphia-STT Saint Thomas Island Cyril E King
19h 50m2 stops Washington, D.C. Reagan-National Miami
American Airlines Logo
6:39 pm - 2:50 pmSTT  Saint Thomas Island Cyril E King-PHL Philadelphia
21h 11m2 stops Miami Washington, D.C. Reagan-National
$568American Airlines
Fri, Jan 22 - Fri, Jan 29
Multiple Airlines Logo
12:25 pm - 7:20 pmPHL  Philadelphia-STT Saint Thomas Island Cyril E King
6h 55m1 stop San Juan Luis Munoz Marin Intl
Multiple Airlines Logo
5:45 pm - 6:04 amSTT  Saint Thomas Island Cyril E King-PHL Philadelphia
12h 19m1 stop San Juan Luis Munoz Marin Intl
$574Multiple Airlines
Tue, Oct 6 - Fri, Oct 16
Multiple Airlines Logo
12:25 pm - 7:20 pmPHL  Philadelphia-STT Saint Thomas Island Cyril E King
6h 55m1 stop San Juan Luis Munoz Marin Intl
Multiple Airlines Logo
5:45 pm - 6:04 amSTT  Saint Thomas Island Cyril E King-PHL Philadelphia
12h 19m1 stop San Juan Luis Munoz Marin Intl
$574Multiple Airlines
Sat, Oct 3 - Fri, Oct 16
American Airlines Logo
8:39 am - 1:46 pmPHL  Philadelphia-STT Saint Thomas Island Cyril E King
4h 07mnonstop
American Airlines Logo
3:13 pm - 6:31 pmSTT  Saint Thomas Island Cyril E King-PHL Philadelphia
4h 18mnonstop
$631American Airlines
Fri, Jan 29 - Fri, Feb 12
United Airlines Logo
6:10 am - 4:18 pmPHL  Philadelphia-STT Saint Thomas Island Cyril E King
9h 08m1 stop Chicago O'Hare Intl
United Airlines Logo
1:02 pm - 11:13 pmSTT  Saint Thomas Island Cyril E King-PHL Philadelphia
11h 11m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl
$640United Airlines
Mon, Feb 1 - Wed, Feb 10
United Airlines Logo
6:10 am - 4:18 pmPHL  Philadelphia-STT Saint Thomas Island Cyril E King
9h 08m1 stop Chicago O'Hare Intl
United Airlines Logo
1:02 pm - 11:13 pmSTT  Saint Thomas Island Cyril E King-PHL Philadelphia
11h 11m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl
$640United Airlines
Fri, Jan 22 - Fri, Jan 29
Delta Logo
5:30 am - 3:05 pmPHL  Philadelphia-STT Saint Thomas Island Cyril E King
8h 35m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:50 pm - 10:56 pmSTT  Saint Thomas Island Cyril E King-PHL Philadelphia
10h 06m1 stop Atlanta Hartsfield-Jackson
$640Delta
Mon, Jan 25 - Tue, Feb 2
Delta Logo
5:20 am - 1:42 pmPHL  Philadelphia-STT Saint Thomas Island Cyril E King
8h 22m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:47 pm - 12:56 amSTT  Saint Thomas Island Cyril E King-PHL Philadelphia
10h 09m1 stop Atlanta Hartsfield-Jackson
$640Delta
Mon, Oct 5 - Wed, Oct 14

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JetBlue flights from Philadelphia to Saint Thomas Island

Our best JetBlue deals on Philadelphia to Saint Thomas Island flight tickets
JetBlue
Sep 20
PHL11:53 amPhiladelphia
26h 08m
1 stop
STT2:01 pmSaint Thomas Island Cyril E King
Sep 24
STT3:00 pmSaint Thomas Island Cyril E King
20h 03m
1 stop
PHL11:03 amPhiladelphia
$408
JetBlue
Sep 2
PHL12:57 pmPhiladelphia
25h 58m
1 stop
STT2:55 pmSaint Thomas Island Cyril E King
Sep 9
STT3:00 pmSaint Thomas Island Cyril E King
20h 03m
1 stop
PHL11:03 amPhiladelphia
$453
JetBlue
Sep 19
PHL11:53 amPhiladelphia
26h 08m
1 stop
STT2:01 pmSaint Thomas Island Cyril E King
Sep 24
STT3:00 pmSaint Thomas Island Cyril E King
20h 03m
1 stop
PHL11:03 amPhiladelphia
$457

American Airlines flights from Philadelphia to Saint Thomas Island

Our best American Airlines deals on Philadelphia to Saint Thomas Island flight tickets
American Airlines
Aug 20
PHL10:15 pmPhiladelphia
14h 38m
2 stops
STT12:53 pmSaint Thomas Island Cyril E King
Aug 24
STT11:49 amSaint Thomas Island Cyril E King
10h 48m
2 stops
PHL10:37 pmPhiladelphia
$936
American Airlines
Aug 14
PHL10:40 pmPhiladelphia
14h 10m
2 stops
STT12:50 pmSaint Thomas Island Cyril E King
Aug 17
STT11:49 amSaint Thomas Island Cyril E King
10h 48m
2 stops
PHL10:37 pmPhiladelphia
$1,045

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 August 7, 2026.
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

Cheapest round-trip

PhiladelphiaSaint Thomas Island

PHL Philadelphia - STT Saint Thomas Island Cyril E King

PHLSTT

Philadelphia

Mon 9/14

11:53 am-2:01 pm

1 stop26h 08m

Saint Thomas Island Cyril E King

Mon 9/21

3:00 pm-11:03 am

1 stop20h 03m

$408

PhiladelphiaSaint Thomas Island

PHL Philadelphia - STT Saint Thomas Island Cyril E King

PHLSTT

Philadelphia

Sun 9/20

11:53 am-2:01 pm

1 stop26h 08m

Saint Thomas Island Cyril E King

Thu 9/24

3:00 pm-11:03 am

1 stop20h 03m

$408

PhiladelphiaSaint Thomas Island

PHL Philadelphia - STT Saint Thomas Island Cyril E King

PHLSTT

Philadelphia

Fri 1/22

8:15 pm-5:05 pm

2 stops19h 50m

Saint Thomas Island Cyril E King

Fri 1/29

6:39 pm-2:50 pm

2 stops21h 11m

$568

PhiladelphiaSaint Thomas Island

PHL Philadelphia - STT Saint Thomas Island Cyril E King

PHLSTT

Philadelphia

Tue 10/6

12:25 pm-7:20 pm

1 stop6h 55m

Saint Thomas Island Cyril E King

Fri 10/16

5:45 pm-6:04 am

1 stop12h 19m

$574

PhiladelphiaSaint Thomas Island

PHL Philadelphia - STT Saint Thomas Island Cyril E King

PHLSTT

Philadelphia

Sat 10/3

12:25 pm-7:20 pm

1 stop6h 55m

Saint Thomas Island Cyril E King

Fri 10/16

5:45 pm-6:04 am

1 stop12h 19m

$574
Quickest round-trip

PhiladelphiaSaint Thomas Island

PHL Philadelphia - STT Saint Thomas Island Cyril E King

PHLSTT

Philadelphia

Fri 1/29

8:39 am-1:46 pm

Nonstop4h 07m

Saint Thomas Island Cyril E King

Fri 2/12

3:13 pm-6:31 pm

Nonstop4h 18m

$631

PhiladelphiaSaint Thomas Island

PHL Philadelphia - STT Saint Thomas Island Cyril E King

PHLSTT

Philadelphia

Mon 2/1

6:10 am-4:18 pm

1 stop9h 08m

Saint Thomas Island Cyril E King

Wed 2/10

1:02 pm-11:13 pm

2 stops11h 11m

$640

PhiladelphiaSaint Thomas Island

PHL Philadelphia - STT Saint Thomas Island Cyril E King

PHLSTT

Philadelphia

Fri 1/22

6:10 am-4:18 pm

1 stop9h 08m

Saint Thomas Island Cyril E King

Fri 1/29

1:02 pm-11:13 pm

2 stops11h 11m

$640

PhiladelphiaSaint Thomas Island

PHL Philadelphia - STT Saint Thomas Island Cyril E King

PHLSTT

Philadelphia

Mon 1/25

5:30 am-3:05 pm

1 stop8h 35m

Saint Thomas Island Cyril E King

Tue 2/2

1:50 pm-10:56 pm

1 stop10h 06m

$640

PhiladelphiaSaint Thomas Island

PHL Philadelphia - STT Saint Thomas Island Cyril E King

PHLSTT

Philadelphia

Mon 10/5

5:20 am-1:42 pm

1 stop8h 22m

Saint Thomas Island Cyril E King

Wed 10/14

2:47 pm-12:56 am

1 stop10h 09m

$640

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

Prices are currently low for flights on this route.

Typical prices usually range from $542 to $711.
The lowest price recently found on this route was $408.

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

The month of February is another great option to travel to Saint Thomas Island, with average flight prices from Philadelphia averaging around $590.

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 $695. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Saint Thomas Island for around $915.

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 from Philadelphia 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 $752 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 $603 on momondo.

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

There are 2 cabin classes available to choose from on Philadelphia to Saint Thomas Island 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 59% 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 2026, prices for Philadelphia to Saint Thomas Island flights are approximately 59% 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

$695

Fastest flight time

3h 30m

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 $695
The fastest flight from Philadelphia to Saint Thomas Island takes 3h 30m
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

Frequently asked questions about flying from Philadelphia to Saint Thomas Island

  • 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 30m 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
JetBluePriceFrom $284Free CancellationRating
7.1
3,030 reviews
Search JetBlue flights
American AirlinesPriceFrom $583Free CancellationRating
7.1
11,881 reviews
Search American Airlines flights
DeltaPriceFrom $604Free CancellationRating
7.8
8,502 reviews
Search Delta flights
United AirlinesPriceFrom $670Free CancellationRating
7.4
10,085 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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