$233 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 9/10. 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

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Flight Deals

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
4:35 pm - 3:25 pm
PHL
-
UVF
22h 50m
1 stop
Air Canada Logo
4:25 pm - 3:51 pm
UVF
-
PHL
23h 26m
1 stop
$560Air Canada
Sun, Oct 25 - Fri, Oct 30
Air Canada Logo
4:35 pm - 3:25 pm
PHL
-
UVF
22h 50m
1 stop
Air Canada Logo
4:25 pm - 3:51 pm
UVF
-
PHL
23h 26m
1 stop
$562Air Canada
Sun, Oct 25 - Fri, Oct 30
Air Canada Logo
4:35 pm - 3:25 pm
PHL
-
UVF
22h 50m
1 stop
Air Canada Logo
4:25 pm - 2:44 pm
UVF
-
PHL
22h 19m
2 stops
$563Air Canada
Sun, Oct 25 - Fri, Oct 30
Air Canada Logo
4:35 pm - 3:25 pm
PHL
-
UVF
22h 50m
1 stop
Air Canada Logo
4:25 pm - 2:44 pm
UVF
-
PHL
22h 19m
2 stops
$565Air Canada
Sun, Oct 25 - Fri, Oct 30
Air Canada Logo
3:20 pm - 3:25 pm
PHL
-
UVF
24h 05m
2 stops
Air Canada Logo
4:25 pm - 2:44 pm
UVF
-
PHL
22h 19m
2 stops
$567Air Canada
Sun, Oct 25 - Fri, Oct 30
Air Canada Logo
3:20 pm - 3:25 pm
PHL
-
UVF
24h 05m
2 stops
Air Canada Logo
4:25 pm - 2:44 pm
UVF
-
PHL
22h 19m
2 stops
$569Air Canada
Wed, Oct 21 - Sun, Oct 25
Air Canada Logo
3:25 pm - 2:15 pm
PHL
-
UVF
46h 50m
2 stops
Air Canada Logo
4:25 pm - 10:56 pm
UVF
-
PHL
30h 31m
1 stop
$573Air Canada
Wed, Oct 21 - Sun, Oct 25
Air Canada Logo
3:25 pm - 2:15 pm
PHL
-
UVF
46h 50m
2 stops
Air Canada Logo
4:25 pm - 10:56 pm
UVF
-
PHL
30h 31m
1 stop
$575Air Canada
Mon, Oct 26 - Mon, Nov 2
Multiple Airlines Logo
4:35 pm - 7:00 pm
PHL
-
SLU
26h 25m
2 stops
Multiple Airlines Logo
12:35 pm - 3:51 pm
SLU
-
PHL
28h 16m
2 stops
$795Multiple Airlines
Fri, Oct 16 - Wed, Oct 21
Multiple Airlines Logo
7:00 am - 7:00 pm
PHL
-
SLU
12h 00m
2 stops
Multiple Airlines Logo
12:35 pm - 9:45 am
SLU
-
PHL
21h 10m
2 stops
$887Multiple Airlines
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 $698 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 $698.

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.

No, with an average price for the route of $885, prices are generally cheapest when you fly direct.

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 November, when tickets cost $367 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of round-trip tickets is $728 and $652 respectively.

Good to know

Low seasonSeptember
Cheapest flight$233
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.

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 8410 reviews
8.5Crew
7.8Entertainment
8.1Boarding
7.8Comfort
7.2Food
Airline reviews

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

2.0 MediocreMargaret, Jun 2026
MSY - LGA
Read more Delta reviews

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

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 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.

1didnt have wheel chair I ordered wheel chair in my ticket flight

Flight was overbooked and seats assigned to multiple passengers. Delay 1 hour to sort out.

Good but I don’t received my bags yet is been 5days still no update

It was pretty straight forward, no glitches or hidden costs

It was a short flight so, everything went smoothly and we got to where we needed to be safely.

Didn’t make it on the flight. Delayed then had to be rebooked, which in turn had me waiting at the airport for another 8 hours before next flight

No TV on the flight. The charging outlet was not working. No food, even a sandwich. The served orange was poor quality.

Selected seats 5 months prior to date. Had email confirmation and seats were not honoured. Family did not sit together

Loved and was pleasantly surprised by the food!! Request Lufthansa to help transiting passengers at Munich (confusion whether to go thru passport control or not).

The flight was comfortable and the staff were helpful and friendly. However, we did not know we were flying PAL until we arrived in Canada, so it was a bit disconcerting. In addition, which port we were leaving from was confusing.

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

Information on your arrival and departure airports