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Cheap Flights from Philadelphia to Castries

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Flight deals from Philadelphia to Castries

Looking for a cheap last-minute deal or the best return flight from Philadelphia to Castries? Find the lowest prices on one-way and return tickets right here.
Castries.434 € per passenger.Departing Mon, 7 Jul, returning Fri, 11 Jul.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Philadelphia International on Mon, 7 Jul, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Fri, 11 Jul, arriving in Philadelphia International.Price includes taxes and charges.From 434 €, select.
Castries.482 € per passenger.Departing Sun, 8 Feb, returning Fri, 13 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Sun, 8 Feb, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Fri, 13 Feb, arriving in Philadelphia International.Price includes taxes and charges.From 482 €, select.
Castries.500 € per passenger.Departing Mon, 5 Jan, returning Mon, 12 Jan.Return flight with American Airlines.Outbound indirect flight with American Airlines, departs from Philadelphia International on Mon, 5 Jan, arriving in St Lucia Hewanorra.Inbound indirect flight with American Airlines, departs from St Lucia Hewanorra on Mon, 12 Jan, arriving in Philadelphia International.Price includes taxes and charges.From 500 €, select.
Castries.509 € per passenger.Departing Thu, 5 Mar, returning Thu, 12 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Thu, 5 Mar, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Thu, 12 Mar, arriving in Philadelphia International.Price includes taxes and charges.From 509 €, select.
Castries.530 € per passenger.Departing Sun, 28 Sep, returning Tue, 7 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Sun, 28 Sep, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Tue, 7 Oct, arriving in Philadelphia International.Price includes taxes and charges.From 530 €, select.
Castries.556 € per passenger.Departing Mon, 24 Nov, returning Fri, 28 Nov.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Philadelphia International on Mon, 24 Nov, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Fri, 28 Nov, arriving in Philadelphia International.Price includes taxes and charges.From 556 €, select.
Castries.582 € per passenger.Departing Fri, 29 Aug, returning Mon, 1 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Fri, 29 Aug, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Mon, 1 Sep, arriving in Philadelphia International.Price includes taxes and charges.From 582 €, select.
Castries.636 € per passenger.Departing Fri, 5 Sep, returning Sat, 13 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Fri, 5 Sep, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Sat, 13 Sep, arriving in Philadelphia International.Price includes taxes and charges.From 636 €, select.

Find the cheapest month to fly from Philadelphia to Castries

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia to Castries flights are currently cheapest in July.
Jun
from 852 €
Jul
from 434 €
Aug
from 987 €
Sep
from 636 €
Oct
from 666 €
Nov
from 556 €
Dec
from 1.575 €
Jan
from 500 €
Feb
from 482 €
Mar
from 509 €
Apr
from 799 €
May
Find prices

Direct flights from Philadelphia to Castries

Alternative Philadelphia to Castries routes

Looking for the cheapest, fastest or easiest route from Philadelphia to Castries? You could fly into the following airports instead.

Philadelphia to Castries: Flight information

The things to know before you go.
Cheapest flight found434 €
Cheapest month to flyJuly
Average flight time4 hrs, 48 mins
Most popular airlineAmerican Airlines
Average flights per week4

Finding cheap flights from Philadelphia to Castries: Frequently asked questions

There are 2 airports in Castries: St Lucia Vigie and St Lucia Hewanorra.
The best price we found for a return flight from Philadelphia to Castries is 434 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
4 hours and 48 minutes is the average flight time from Philadelphia to Castries.
American Airlines flies direct from Philadelphia to Castries.
As of June 2025, there are 4 flights per week flying from Philadelphia to Castries.
The cheapest month to fly from Philadelphia to Castries is usually June 2025.
If you're flying from Philadelphia, the cheapest airport near Castries is St Lucia Hewanorra – which is 30.5 km away from the centre of Castries. We've found flights into this airport from 434 €.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to Castries on Monday, 7 July 2025.
Yes – the average flight time is 4 hours and 48 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Castries but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Castries is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 28°C. September is typically the warmest month in Castries, when it usually averages around 28°C. You can expect the least rain in February. The coldest month is February, with temperatures averaging 25°C. The rainiest month is October.
The cheapest airline that flies to Castries is Air Canada .

Travelling from Philadelphia to Castries: what you need to know

  • Philadelphia's main base, Philadelphia International Airport (PHL), is where many unforgettable trips begin. Explore your departure options from here for your flight from Philadelphia to Castries.

  • Step off your plane in Castries at George F. L. Charles Airport (SLU) or Hewanorra Airport (UVF).

  • The average duration of a direct Philadelphia to Castries flight is 4 hours 45 minutes.

  • Philadelphia and Castries follow the same timezone, UTC-4.

  • To ensure you board your Philadelphia to Castries flight, leave enough time for things like check-in and baggage drop. Turning up two hours ahead of international departures and one hour before domestic flights is the standard rule.

  • If you're travelling during a peak month like August, be at the airport even earlier. You'll want to arrive up to four hours before an international flight and two hours ahead of domestic departures. Expect lines to be longer during high seasons like Christmas, New Year and spring break.

How to find the cheapest flights from Philadelphia to Castries

  • 152 € is the lowest price for a one-way ticket from Philadelphia to Castries. A return flight starts from 434 €. These fares may change depending on availability and demand.

  • Lock in cheap Philadelphia to Castries flights by booking three months ahead. Based on our research, that's the sweet spot for finding the biggest deals.

  • The best month for scoring cheap plane tickets from Philadelphia to Castries is June. Use the 'Whole month' tool to compare all available prices, then select the dates with the lowest fares.

  • Getting a cheap flight from Philadelphia to Castries is easy with Price Alerts. Simply create one of these automatic alerts and we'll get in touch when there's a better deal.

  • Choose your preferred departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your Philadelphia to Castries flight results by 'Best,' 'Cheapest' or 'Fastest.'

Flying from Philadelphia

Philadelphia International Airport (PHL)

  • Depart from Philadelphia International Airport (PHL) on a nonstop flight from Philadelphia to Castries. From PHL, you can travel directly to Hewanorra Airport (UVF).

  • Lock in your Philadelphia to Castries plane tickets with American Airlines. This carrier is a top choice for direct flights from PHL.

  • Stopovers are the perfect opportunity to take a break from travelling — and maybe even tour another city. When browsing Philadelphia to Castries flights departing from Philadelphia International Airport, uncheck the 'Direct flights only' box to see where you can visit along the way. Some popular options include:

    • Grantley Adams International Airport (BGI)

    • Newark Liberty International Airport (EWR)

    • Hartsfield-Jackson Atlanta International Airport (ATL)

  • The journey from central Philadelphia to PHL takes around 45 minutes by public transport. If you ride-share, drive or grab a cab, you'll cover the 11 kilometres in 15 minutes or so, depending on traffic conditions.

  • After a hassle-free start to your trip? Stay near Philadelphia International Airport. Whether you've booked an early flight from Philadelphia to Castries or just don't like being rushed, these hotels are ideal:

  • Of all flights departing from Philadelphia International Airport, 78.93% arrive on time at their destination.

  • PHL is located at 8500 Essington Ave.

Arriving in Castries

George F. L. Charles Airport (SLU)

  • George F. L. Charles Airport (SLU) to central Castries takes around 5 minutes to reach by car. The centre is roughly 2 kilometres away.

  • When travelling on public transport, expect a journey time of about 40 minutes.

  • If you have a late flight from Philadelphia to Castries, nothing beats the convenience of staying close to the terminal. Grab your luggage from the carousel and then be showered and sleeping not long after at one of these hotels near SLU:

  • Hit the road running by picking up a George F. L. Charles Airport rental car. Grab your wheels from Drive A Matic, Final Rentals or Sixt and explore beyond Castries's main sights.

  • Reserving your ride from George F. L. Charles Airport about one week ahead boosts your odds of scoring a great price.

Hewanorra Airport (UVF)

  • As soon as your flight from Philadelphia to Castries has hit the runway, you can get to the city centre in around 1 hour 10 minutes by car. Central Castries is roughly 31 kilometres from Hewanorra Airport (UVF).

  • Hang up the 'Do not disturb' sign and unwind at a hotel near UVF. Here are a few options where you can check in after your flight from Philadelphia to Castries:

  • Forget about inconvenient public transport schedules or waiting forever for a cab. Pick up a Hewanorra Airport rental car and take your journey in whatever direction you like. Check out the availability and rates from Drive A Matic, Sixt and Final Rentals.

  • Avoid potential price surges. Reserving your ride one week ahead of your arrival at UVF can get you a lower rate.

Best time to go to Castries

  • It's time to choose your trip dates for your flight from Philadelphia to Castries. June is the busiest month to travel to Castries. If you want a quieter atmosphere, go in February.

  • The warmest month in Castries is September, with temperatures ranging between 26ºC (79ºF) and 30ºC (86ºF). Book your Philadelphia to Castries ticket then if that's your definition of good weather.

  • If you'd rather travel in cooler conditions, search for a cheap flight from Philadelphia to Castries in February when temperatures average between 24ºC (75ºF) and 28ºC (82ºF).

More about Castries

  • After booking your flight from Philadelphia to Castries, choose a hotel that puts you where you want to be. Make one of these accommodation options your base for exploring Castries:

  • There are so many things to discover in this city it can be difficult to know where to begin. Derek Walcott Square, Morne Fortune and Immaculate Conception Church are popular attractions which should feature on any well-planned Castries itinerary.

Explore more of Saint Lucia

  • Castries has plenty going for it, but there are so many other parts of Saint Lucia you should also see. Around 32 kilometres south of Castries, a visit to Vieux Fort will keep you busy. Start with leading attractions like Maria Islands Museum, Anse Des Sables Beach and YoungFaith Park.

  • Travel 24 kilometres south-east from Castries to visit Micoud, another standout destination in Saint Lucia. Don't leave without exploring Josephine Splash Park and Ti Rocher Community Park.

Plan the rest of your trip from Philadelphia to Castries

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.