PHL - STT

$158 Find Cheap Flights from Philadelphia to Saint Thomas Island

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Saint Thomas Island departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Saint Thomas Island

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Saint Thomas Island.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Saint Thomas Island.
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Everything you should know

Cheapest round-trip
$326
Typical prices: $901-$375
Multiple Airlines
Sun 5/10Mon 5/18
PHL - STT • 1 stop
Cheapest non-stop
$711
Typical prices: $1,168-$830
American Airlines
Sat 7/4Sat 7/11
PHL - STT • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
PHL offers Philly-focused dining like cheesesteaks.
At STT, use USVI-licensed taxis and confirm rates.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $325 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with American Airlines. Average duration is 4h 03m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $219 (round-trip)
Shortest trip • 6h 17m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 26% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
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We hope you love your trip to Saint Thomas Island!
Flight Deals
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Flight Deals

Cheap Flights from Philadelphia to Saint Thomas Island (PHL-STT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Saint Thomas Island that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Saint Thomas Island

Sun, May 10 - Mon, May 18
Multiple Airlines Logo
8:00 am - 12:47 pm
PHL
-
STT
28h 47m
1 stop
Multiple Airlines Logo
1:52 pm - 3:42 pm
STT
-
PHL
25h 50m
1 stop
$326Multiple Airlines
Sat, May 9 - Sat, May 16
Spirit Airlines Logo
6:45 am - 12:47 pm
PHL
-
STT
6h 02m
1 stop
Spirit Airlines Logo
1:52 pm - 11:58 pm
STT
-
PHL
10h 06m
1 stop
$327Spirit Airlines
Tue, Aug 18 - Tue, Aug 25
Spirit Airlines Logo
7:05 am - 1:23 pm
PHL
-
STT
6h 18m
1 stop
Spirit Airlines Logo
3:46 pm - 11:40 pm
STT
-
PHL
7h 54m
1 stop
$332Spirit Airlines
Wed, Aug 12 - Wed, Aug 19
Spirit Airlines Logo
7:05 am - 1:23 pm
PHL
-
STT
6h 18m
1 stop
Spirit Airlines Logo
3:46 pm - 11:40 pm
STT
-
PHL
7h 54m
1 stop
$334Spirit Airlines
Fri, May 15 - Mon, May 18
Spirit Airlines Logo
8:44 pm - 12:47 pm
PHL
-
STT
16h 03m
1 stop
Spirit Airlines Logo
1:52 pm - 11:58 pm
STT
-
PHL
10h 06m
1 stop
$348Spirit Airlines
Sat, May 16 - Mon, May 18
Multiple Airlines Logo
1:00 pm - 12:47 pm
PHL
-
STT
23h 47m
1 stop
Multiple Airlines Logo
1:52 pm - 3:42 pm
STT
-
PHL
25h 50m
1 stop
$349Multiple Airlines
Sun, May 10 - Mon, May 18
Multiple Airlines Logo
8:00 am - 12:47 pm
PHL
-
STT
28h 47m
1 stop
Multiple Airlines Logo
1:52 pm - 1:50 pm
STT
-
PHL
23h 58m
2 stops
$353Multiple Airlines
Sun, May 10 - Mon, May 18
Multiple Airlines Logo
8:00 am - 12:47 pm
PHL
-
STT
28h 47m
1 stop
Multiple Airlines Logo
1:52 pm - 12:44 am
STT
-
PHL
10h 52m
1 stop
$356Multiple Airlines
Thu, May 14 - Sun, May 17
Multiple Airlines Logo
8:44 pm - 12:47 pm
PHL
-
STT
16h 03m
1 stop
Multiple Airlines Logo
3:21 pm - 10:10 pm
STT
-
PHL
30h 49m
2 stops
$362Multiple Airlines
Sat, May 2 - Fri, May 8
Spirit Airlines Logo
5:45 am - 4:15 pm
PHL
-
STT
10h 30m
1 stop
Spirit Airlines Logo
1:52 pm - 11:58 pm
STT
-
PHL
10h 06m
1 stop
$363Spirit Airlines
Booking Insights

KAYAK's insights & trends for Philadelphia to Saint Thomas Island flights

Get data-powered insights and trends into flights from Philadelphia to Saint Thomas Island to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Philadelphia to Saint Thomas Island?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Philadelphia to Saint Thomas Island departing in May.

What’s the cheapest day of the week to fly from Philadelphia to Saint Thomas Island?

The average price of all round-trip flights from Philadelphia to Saint Thomas Island clicked on KAYAK for each day over the last 12 months.

For Philadelphia to Saint Thomas Island, Thursday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Saint Thomas Island back to Philadelphia, the best deals are generally found on Tuesday, with Saturday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Saint Thomas Island, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Saint Thomas Island is July, where tickets cost $489 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $910 and $819 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Philadelphia to Saint Thomas Island, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Philadelphia to Saint Thomas Island, you should book around 3 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Expert advice

Expert advice for your flight from Philadelphia to Saint Thomas Island

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on STT

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Harriet Baskas

Harriet Baskas

Expert on PHL

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low seasonSeptember
Cheapest flight$158
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Philadelphia to Saint Thomas Island

When to book flights from Philadelphia to Saint Thomas Island

Are your dates flexible? Find out the best times to travel from Philadelphia to Saint Thomas Island based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Saint Thomas Island

  • What is the cheapest flight from Philadelphia to Saint Thomas Island?

    In the last 3 days, the lowest price for a flight from Philadelphia to Saint Thomas Island was $158 for a one-way ticket and $325 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Saint Thomas Island?

    Yes

  • Which airports will I be using when flying from Philadelphia to Saint Thomas Island?

    Philadelphia and Saint Thomas Island are both served by 1 main airport. You will leave Philadelphia from Philadelphia and will be arriving at Saint Thomas Island Cyril E King.

  • Which airlines offer Wi-Fi service onboard planes from Philadelphia to Saint Thomas Island?

    American Airlines, Delta, and JetBlue offer inflight Wi-Fi service on the Philadelphia to Saint Thomas Island flight route.

  • Which aircraft models fly most regularly from Philadelphia to Saint Thomas Island?

    The Airbus A319 is the aircraft model that flies most regularly on the Philadelphia to Saint Thomas Island flight route.

  • Which airline alliances offer flights from Philadelphia to Saint Thomas Island?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Philadelphia and Saint Thomas Island, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Philadelphia to Saint Thomas Island?

    There are nonstop flights from Philadelphia to Saint Thomas Island on a daily basis.

  • Which is the best airline for flights from Philadelphia to Saint Thomas Island, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Saint Thomas Island are Delta and United Airlines. With an average price for the route of $724 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $733 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Philadelphia to Saint Thomas Island?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Saint Thomas Island.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Saint Thomas Island?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Saint Thomas Island from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Saint Thomas Island?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Saint Thomas Island with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and STT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Saint Thomas Island?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Saint Thomas Island from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Philadelphia to Saint Thomas Island

  • Looking for a cheap flight? 25% of our users found flights on this route for $498 or less one-way and $771 or less round-trip.

Prefer to fly direct from Philadelphia to Saint Thomas Island?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Philadelphia to Saint Thomas Island Cyril E King.
Find which airlines fly direct from Philadelphia Airport to Saint Thomas Island Cyril E King Airport, which days they fly and book direct flights.

Direct departures

Philadelphia to Saint Thomas Island Cyril E King

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Direct returns

Saint Thomas Island Cyril E King to Philadelphia

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Reviews of the top 5 airlines serving from Philadelphia to Saint Thomas Island

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Saint Thomas Island. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Saint Thomas Island? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8430 reviews
8.1Boarding
7.9Comfort
7.8Entertainment
8.5Crew
7.2Food
Airline reviews

Everything was great. The only issue is unfixable. Seats are too small. 😁🤪

10.0 ExcellentAnonymous, Apr 2026
ATL - AMS
Read more Delta reviews

Everything was great. The only issue is unfixable. Seats are too small. 😁🤪

This wasn't my experience with Delta. It was just the Pegasus flight. Seats were very hard. Staff was kinda rough. Not very nice. Charged me for snacks. For a 4 hour flight I would've expected more.

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

Landed without a gate ready. Plane is extremely old and dirty.

All the amenities was wonderful, if they could keep their prices that low. I'd fly with them all the time.

Very old plane with no inflight entertainment. I purchased the internet pass and it was nearly unusable.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

Flight itself excellent, but delayed so missed connection & got to destination 2 hrs later

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Really hard landing... as in slammed into the runway then hit the brakes really hard ...

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

Putting people that close to the bathroom, where you have to look into the bathroom as people are exiting and entering was not great and the smell was also not great. I know the airlines are desperate for more chairs, but that seat is a crime.

My bags were misplaced!!! Im in a foreign country with no bags

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

I appreciate that I finally got the seat I paid extra for this time. Thank you

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

They are always late and seats was also not having working charger

Easy to get our TSA pre check #added. Flight crew was great and entertaining and we landed early!

Flight was delayed 6plus hours Did not take flight Customer service was terrible Will never fly again and will spread how terrible you are You stink

I didnt have a flight. Kayak must be on drugs because I confirmed with spirit that I had no booked flight.

We were surprised to be charged $99 for a personal item. And of course everything offered on the flight was an additional charge. Other than that the pilot flew and landed the plane well and the attendants and fellow passengers were nice enough.

baggage drop off was a bit much. I felt like I worked for spirit airlines since I did all the work.

Gate changed multiple times. The staff seemed annoyed that we asked for water. We had to pay for the water as well.

It was a full Spirit experience. Got to witness police officers having to deboard a passenger and cost us about an hour of delay. Front seat was spacious and better than expected.

Broke my bag and offered no support or solution afterwards

We didn't get on the flight, they canceled our flight and said there was no flights leaving this weekend and sent me our money back.

Horrible company: canceled flights and delayed flights. Spirit canceled my flight from Miami to Philadelphia the day before we were supposed to leave from Philadelphia to Miami, with no explanation. I had to rebook another flight, spending more money and instead of flying from Miami, I had to choose a flight from Fort Lauderdale because there were no direct flights available from Miami. That created additional cost. The flight with Spirit from Fort Lauderdale was scheduled to depart at 6am, so I had to wake up my 3 and 6 years old at 3am to get to the airport in time and then, at 5am while we were at the gate the delayed the flight until 7:45am with again no explanation.

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Everything you need to know for your flight from Philadelphia to Saint Thomas Island

Information on your arrival and departure airports