$189 Find Cheap Flights from Philadelphia to Saint Lucia - Compare and Save

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 Lucia departing on 10/24. 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.
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1 adult, Economy, 0 bags

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Book Cheap Philadelphia to Saint Lucia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Saint Lucia 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 Lucia

Sun, Oct 25 - Fri, Oct 30
Air Canada Logo
5:05 pm - 3:40 pm
PHL
-
UVF
22h 35m
1 stop
Air Canada Logo
4:40 pm - 4:21 pm
UVF
-
PHL
23h 41m
1 stop
$450Air Canada
Sun, Oct 25 - Fri, Oct 30
Air Canada Logo
3:20 pm - 3:40 pm
PHL
-
UVF
24h 20m
2 stops
Air Canada Logo
4:40 pm - 4:21 pm
UVF
-
PHL
23h 41m
1 stop
$453Air Canada
Sun, Oct 25 - Fri, Oct 30
Air Canada Logo
3:20 pm - 3:40 pm
PHL
-
UVF
24h 20m
2 stops
Air Canada Logo
4:40 pm - 2:44 pm
UVF
-
PHL
22h 04m
2 stops
$456Air Canada
Thu, Sep 10 - Tue, Sep 15
Multiple Airlines Logo
4:20 pm - 2:15 pm
PHL
-
UVF
21h 55m
1 stop
Multiple Airlines Logo
4:39 pm - 10:03 pm
UVF
-
PHL
29h 24m
2 stops
$634Multiple Airlines
Mon, Oct 19 - Mon, Oct 26
Multiple Airlines Logo
10:45 am - 3:20 pm
PHL
-
UVF
28h 35m
2 stops
Multiple Airlines Logo
4:40 pm - 4:21 pm
UVF
-
PHL
23h 41m
1 stop
$654Multiple Airlines
Mon, Oct 19 - Mon, Oct 26
Multiple Airlines Logo
3:25 pm - 3:20 pm
PHL
-
UVF
23h 55m
2 stops
Multiple Airlines Logo
4:40 pm - 2:44 pm
UVF
-
PHL
22h 04m
2 stops
$657Multiple Airlines
Tue, Sep 8 - Tue, Sep 15
American Airlines Logo
2:32 pm - 2:02 pm
PHL
-
UVF
23h 30m
1 stop
American Airlines Logo
3:02 pm - 2:12 pm
UVF
-
PHL
23h 10m
1 stop
$707American Airlines
Tue, Dec 1 - Tue, Dec 8
American Airlines Logo
7:37 pm - 1:19 pm
PHL
-
UVF
16h 42m
1 stop
American Airlines Logo
2:23 pm - 12:46 am
UVF
-
PHL
11h 23m
1 stop
$708American Airlines
Tue, Jan 12 - Tue, Jan 19
Delta Logo
5:30 am - 3:05 pm
PHL
-
UVF
8h 35m
1 stop
Delta Logo
4:25 pm - 12:51 am
UVF
-
PHL
9h 26m
1 stop
$708Delta
Mon, Jan 11 - Tue, Jan 19
Delta Logo
6:35 am - 3:05 pm
PHL
-
UVF
7h 30m
1 stop
Delta Logo
4:25 pm - 12:51 am
UVF
-
PHL
9h 26m
1 stop
$708Delta
Booking Insights

KAYAK's insights & trends for Philadelphia to Saint Lucia flights

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

What is the cheapest Philadelphia to Saint Lucia flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Saint Lucia from Philadelphia found in the last 5 days was to Castries, at $723 round-trip. The most popular route is from Philadelphia (PHL) to Castries (UVF), and the cheapest round-trip airline ticket found on this route in the last 5 days was $723.

Can I save money by flying with a layover from Philadelphia to Saint Lucia?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $753 on average.

What is the cheapest month to fly from Philadelphia to Saint Lucia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Saint Lucia, 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 Lucia is January, when tickets cost $703 (return) on average. On the other hand, the most expensive months are July and September, when the average cost of round-trip tickets is $1,087 and $1,070 respectively.

Good to know

Low season

September

Cheapest flight

$189
Best time to beat the crowds but there is an average 24% increase in price.
Flight from Philadelphia to Castries

FAQs - booking Saint Lucia flights

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

    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 Lucia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Philadelphia to Saint Lucia 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 Lucia?

    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 from Philadelphia to Saint Lucia with an airline and back with another airline.

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

    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 from Philadelphia to Saint Lucia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many flights are there between Philadelphia and Saint Lucia per day?

    There is a maximum of 1 nonstop flight a day that takes off from Philadelphia and lands in Saint Lucia, with an average flight time of 4h 44m. The most common departure time is 8:00 am and most flights take off in the morning. Each week, there are 1 flights.

Reviews of the top 3 airlines serving from Philadelphia to Saint Lucia

 
Need help choosing which airline to fly with from Philadelphia to Saint Lucia? 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.
7.8
DeltaOverall score based on 8482 reviews
7.2Food
8.5Crew
7.8Comfort
7.8Entertainment
8.1Boarding
Airline reviews

Staff is friendly and helpful but flight was delayed by one hour from Detroit, making for tight window in Toronto to clear Canada Customs and pass through security screening in order to get to connecting flight on time.

6.0 GoodAnonymous, Jul 2026
DTW - YYZ
Read more Delta reviews

Staff is friendly and helpful but flight was delayed by one hour from Detroit, making for tight window in Toronto to clear Canada Customs and pass through security screening in order to get to connecting flight on time.

Delta staff was exceptionally helpful and considerate. However, the first two of three flight legs were delayed making connections tentative and stressful.

Delta is always late. Ruined our first day of a short vacation. Timing is important. We pay to stay on an itinerary

No Internet, no backseat screen, no nothing. I bought a Delta ticket and ended up on American Airlines. How did that happen?

Connection flights should be spaced out farther because too close I missed my connection.

The flight was way too HOT! And the plane did not have any in-flight TV entertainment.

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

We splurged and decided to fly first class. Seats were roomy. But flight crew arrived late to the airport. That delayed our flight. Most of the passengers had to try to make connections flights. I felt bad for them. We checked 4 bags. We got three from the baggage claim carousel. 4th one was lost. Delta online help wasn’t good. Baggage claim staff were sympathetic and nice but we waited around for almost 2 hours and it had t been found. They did find it several hours later and we had to drive back to airport to retrieve it. I won’t be splurging on 1st. Lass again anytime soon. I think we got worse service. I am also not a huge fan of delta but we have family in ATL so we don’t have a ton of choice. What should have been an easy flight turned into a stressful event due to flight crew tardiness and baggage mishandling.

My flight consistently said it was on time and the plane didn’t arrive until after 30 minutes after take off and nothing was announced to passengers

Very good, boarded and took off on time and landed early

Boarding and Delays The boarding process for my American Airlines flight from Copenhagen to Philadelphia was a bit tricky. We experienced a gate change that required a long walk to a new area of the airport. Additionally, boarding was not via a jet bridge; we had to take a shuttle bus to the plane and then carry our luggage up the stairs ourselves. Furthermore, the bag drop didn't open until about 12:20 PM, which was only three hours before our scheduled departure. This meant I couldn't drop my bag off early and had to wait outside of security in order to drop off my bag and use the kiosk. The bag drop self-service kiosks also didn't open until about 12:00 PM when an American Airlines employee unlocked them so that we could print out our boarding passes and bag tags, which further created a backlog. The flight was delayed by over an hour because we had to wait for one of the tires on the plane to be changed. Flight Attendant Professionalism On a positive note, the flight attendant was very professional when handling a passenger who was sitting in the wrong seat. Even though the passenger was persistent and reluctant to move, the flight attendant calmly ensured the assigned passenger could take their seat. Kudos to the flight attendant for keeping his calm and composure, not allowing the issue to escalate, and handling it well under pressure while a line of passengers waited in the aisle to board. In-Flight Service The in-flight service was also fast, prompt, and efficient, although service had to be suspended for the last two hours of the flight due to weather and turbulence, which was outside of the crew's control. Limited Flight Options Please note that American Airlines only operates one flight per day in and out of Copenhagen. This means there are limited options available if your flight is delayed or canceled, which is something to take into consideration when booking.

Not much space for someone 6 feet high in normal economy seat. My knee hurt

Getting to Scotland with no luggage (no medicine, no clothes and no club) on golf trip very disappointed

Quick flight again no one illness why there were multiple delays and changing of the gate number.

The check in agents in PHL and gate agents had to have been the rudest women that I have ever encountered; the agent weighing the bags at check in screamed continuously at all of the guests as did the woman at the gate.I have Executive Platinum status with AA and fly a lot with AA but these ladies were the absolute worst I had the displeasure to encounter!

Delayed delayed. Poor professionalism. Our seats changed and we pay for them

Fine. Nothing to write home about. The plane left on time, and arrived on time.

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 last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

Was delayed at every point/ connection. Luggages missing for 5days. Had no medications for diabetes and high B/p. when bags where finally delivered on the 30th, the insulin and ozempic were no longer patent, as the ice pack had since dissolved and the authenticity of the med is now questionable, since they must be refrigerated. Please have them refund my bag fees. I should sue them for all the inconveniences caused to me.

Plane was packed but flew on-time, and the comfort level was great! All planes are a bit cramped, but the in flight entertainment was superb, snacks were nice, and the crew was polite. Got into Calgary on schedule...all we could ask for

I am very tall. All airline seats are a bit uncomfortable.

Lots of announcements that no wheeled carry on bags were allowed on the flight, yet the overhead bins were totally full and made it uncomfortable trying to get through and significantly held up departure. Why were they allowed on when they said that they weren't? Trash only came by soon after service and I wasn't ready to dispose of it. I had to first hold on to it and after flagging and attendant was told to stuff it in the seat back! I have never run into the need to walk outside in northern winter weather at an international airport and wasn't dressed to do so in the cold pouring rain! I'm not thinking that I'll be back unless I hear things have changed.

No complaints l will always do Air Canada once they are flying where I want to go

Flight was delayed an ultimately cancelled. Took me close to 45 mins with an Air Canada staff to be put on another flight.

Boarding was particularly poorly done with disregard for courtesy, professionalism, and efficiency. Think mid 70’s bus station.

My trip was ruined by the restrictions hidden in their "basic economy" plan. I'd flown hundreds of times and never encountered a program that does not allow changes of any kind. I don't know whose interface hid this information more, but I'm unlikely to use Kayak or Air Canada again after that experience.

Air Canada staff needs to be trained in hospitality. Most flight attendants are with attitude. Air Canada needs to carry additional food on board especially vegetarian plates as this category of travellers are on the rise. This is necessary for long distance flights. Blankets are cheap. Seats are not designed well Lower back portion should be thicker. Everytime thr passenger at the back of me took stuff or put stuff in the pocket of the seat in front of them which is my seat, I could feel them pushing or hitting on my chair.

Everything you need to know for your flight from Philadelphia to Saint Lucia

Information on your arrival and departure airports