C$314 Cheap Flights from Philadelphia (PHLA) to Castries (SLUA)

Compare Philadelphia to Castries flight deals

Find the cheapest month or even day of the year to fly to Castries

Book the best Castries fare with no extra fees

Flight deals from Philadelphia to Castries

Looking for a cheap last-minute deal or the best return flight from Philadelphia to Castries? If you want to travel next month, return fares start from C$761. Find the lowest prices on one-way and return tickets right here.

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 August.

Which airlines fly 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 foundC$314
Cheapest month to flyAugust
Average flight time4 hrs, 47 mins
Most popular airlineAmerican Airlines
Average flights per week1

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 C$740. 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 47 minutes is the average flight time from Philadelphia to Castries.
American Airlines flies direct from Philadelphia to Castries.
As of June 2026, there is one flight per week flying from Philadelphia to Castries.
The cheapest month to fly from Philadelphia to Castries is usually November.
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 C$740.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to Castries on Wednesday, November 4, 2026.
Yes – the average flight time is 4 hours and 47 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

  • Planning your getaway starts with figuring out where you'll fly out of in Philadelphia. Philadelphia International Airport (PHL) is the city's main base, so check out your options for reserving a flight from Philadelphia to Castries departing from here.

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

  • On average, direct flights from Philadelphia to Castries take 4 hours 48 minutes. Castries and Philadelphia are in the same timezone (UTC-4), so you won't have to adjust your watch when you arrive.

  • To ensure you get on your flight from Philadelphia to Castries, allow plenty of time for things like check-in and baggage drop. Turning up two hours before international departures and an hour before domestic flights is the general travel rule.

  • You'll likely experience bigger queues during popular months such as August and other peak seasons. Arriving up to four hours in advance for an international flight and two hours for domestic departures will help ensure a smooth travel experience.

  • You don't need a visa for Saint Lucia if you have a passport from United States and are travelling for tourism purposes. Visa and travel documentation requirements are subject to change. So before organizing your cheap flights from Philadelphia to Castries, be sure to check with your airline and your destination country's local consulate or embassy for the latest rules.

Flying from Philadelphia

Philadelphia International Airport (PHL)

  • You can reserve a direct flight from Philadelphia to Castries jetting off from Philadelphia International Airport (PHL). Begin your journey at PHL and end it at Hewanorra Airport (UVF).

  • If you plan to leave from PHL, you can catch a direct flight from Philadelphia to Castries with American Airlines.

  • We make it a piece of cake to find a flight from Philadelphia to Castries that includes a stopover. To see all the options leaving from Philadelphia International Airport, deselect 'Direct flights only.' Then, select a flight that has a stop long enough to see the sights of your chosen city. Some popular stopovers include:

    • Grantley Adams International Airport (BGI)

    • Newark Liberty International Airport (EWR)

    • Hartsfield-Jackson Atlanta International Airport (ATL)

  • Travelling from central Philadelphia to PHL takes about 44 minutes by public transport. If you ride-share, drive or grab a cab, you'll cover the 19 kilometres in 17 minutes or so, depending on traffic.

  • Need a handy hotel near Philadelphia International Airport? If you've booked an early flight from Philadelphia to Castries, these accommodation options will put you moments from your check-in counter:

Arriving in Castries

Hewanorra Airport (UVF)

  • Hewanorra Airport (UVF) to central Castries takes around 1 hour and 9 minutes by car. It's approximately 56 kilometres away.

  • Consider staying in a hotel close to UVF if you're catching a late flight from Philadelphia to Castries. Check in to one of these accommodation options and avoid the hassle of a long transfer:

George F. L. Charles Airport (SLU)

  • After your flight from Philadelphia to Castries has arrived, you can reach the city centre in about 6 minutes by car. Central Castries is approximately 3 kilometres from George F. L. Charles Airport (SLU).

  • You can also travel by public transport, which will take around 40 minutes.

  • You'll find some comfortable hotels to drop your things at near SLU. Kick back after your flight from Philadelphia to Castries at any of these perfectly located options:

How to find the cheapest flights from Philadelphia to Castries

  • C$314 is the best price for a one-way ticket from Philadelphia to Castries. Return flights start at C$740. These prices can change depending on demand and availability.

  • Score cheap flights from Philadelphia to Castries by booking 10 months ahead. Based on our research, that's the sweet spot for bagging a bargain.

  • The cheapest month for tickets from Philadelphia to Castries is June. You can easily compare prices using the 'Whole month' tool to find the cheapest day to fly.

  • Snapping up a cheap ticket from Philadelphia to Castries is a breeze with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch when there's a better deal.

  • Tailor your flights using filters. Pick your ideal departure and arrival times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Best' or 'Fastest' flights from Philadelphia to Castries.

Best time to go to Castries

  • July is the most popular month for flights from Philadelphia to Castries. To escape the crowds, go to Castries in May.

  • Schedule your flight from Philadelphia to Castries for September if you'd like to visit the city during its warmest month. You can expect temperatures in Castries to range from 26ºC to 30ºC.

  • Look for cheap flights from Philadelphia to Castries in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 24ºC and 28ºC on average.

More about Castries

  • When it comes to searching for somewhere to lay your head, you'll find the most popular stays in Castries right here. Check out these options as soon as you've booked your flight from Philadelphia to Castries:

  • Derek Walcott Square and Morne Fortune are just two of the top attractions to add to your Castries to-do list. Keep the momentum going by heading to Immaculate Conception Church.

Complete your Castries trip with a car rental

  • We use the same magic that helped you find your cheap flight from Philadelphia to Castries to track down awesome deals on car rentals. Search for your ride in seconds and compare offers in one place. Plus you'll find all the info you need to drive in Castries, from the most popular rental company to the average daily price.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.