Cheap flight tickets 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? If you want to travel next month, return fares start from RM3,069. 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 October.

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 foundRM906
Cheapest month to flyOctober
Average flight time4 hrs, 48 mins
Most popular airlineAmerican Airlines
Average flights per week2

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 RM2,316. 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 August 2026, there are 8 flights per week flying from Philadelphia to Castries.
The cheapest month to fly from Philadelphia to Castries is usually January.
If you're flying from Philadelphia, the cheapest airport near Castries is St Lucia Hewanorra – which is 30.4 km away from the centre of Castries. We've found flights into this airport from RM2,316.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to Castries on Wednesday, 13 January 2027.
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 August, 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 International Airport (PHL) is Philadelphia's main airport. Explore your options for reserving a flight from Philadelphia to Castries leaving from here.

  • When choosing where to land in Castries, St Lucia Hewanorra Airport (UVF) and St Lucia Vigie Airport (SLU) are the major entry points.

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

  • The timezone in Castries is UTC-4, which is one hour ahead of Philadelphia.

  • To ensure you board your Philadelphia to Castries flight, leave enough time to navigate the airport and find your gate. Turning up two hours ahead of international departures and one hour before domestic flights is a good rule of thumb.

  • You'll likely experience longer lines during popular months such as August. Arriving up to four hours in advance for international flights and two hours for domestic departures will help ensure a smooth travel experience.

How to find the cheapest flights from Philadelphia to Castries

  • The lowest price we've seen for a one-way ticket from Philadelphia to Castries is RM906. For a return flight on this route, the best price is RM2,316. Depending on when you want to go and the availability, these fares could change.

  • Lock in cheap Philadelphia to Castries flights by booking one month ahead. Based on our research, that's the ideal time frame for bagging a bargain.

  • June is the best month for picking up an incredible deal on a plane ticket from Philadelphia to Castries. If you'd like to travel during a different time of year, the 'Whole month' tool will give you the lowest prices for each month.

  • Finding a cheap flight from Philadelphia to Castries is a breeze with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you as soon as the price has dropped.

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

Flying from Philadelphia

Philadelphia International Airport (PHL)

  • You can get a direct flight from Philadelphia to Castries leaving from Philadelphia International Airport (PHL). Begin your trip at PHL and come in for landing at St Lucia Hewanorra Airport (UVF).

  • American Airlines is a well-known airline that offers direct Philadelphia to Castries plane tickets from PHL.

  • We make it easy to book a Philadelphia to Castries flight with a stopover. To see your options leaving from Philadelphia International Airport, uncheck 'Direct flights only.' Then, choose a flight offering a stop long enough to tour the city of your choice. Some popular stopovers include:

    • Atlanta Hartsfield-Jackson Airport (ATL)

    • New York Newark Airport (EWR)

    • Toronto Pearson International Airport (YYZ)

  • Located around 11 kilometres from central Philadelphia, PHL can be reached in about 20 minutes by car, depending on traffic. The journey by public transport will take roughly 30 minutes.

  • Booked an early flight from Philadelphia to Castries? Avoid the last-minute rush to the terminal (and enjoy a little extra shut-eye) by choosing one of these hotels close to Philadelphia International Airport:

  • Of the flights that depart from Philadelphia International Airport, 77% land on time at their destination.

  • You'll find PHL at 8500 Essington Ave.

Arriving in Castries

St Lucia Hewanorra Airport (UVF)

  • The distance from St Lucia Hewanorra Airport (UVF) to central Castries is roughly 31 kilometres. It takes about 1 hour 30 minutes to get to the centre driving.

  • If you're taking public transport, expect a journey time of around 2 hours.

  • The last thing you want is a long journey to your hotel if you're arriving on a late flight from Philadelphia to Castries. Book one of these accommodation options near UVF instead:

  • Pick up a St Lucia Hewanorra Airport rental car and explore Castries and beyond with your own set of wheels. Drive A Matic, Sixt and Final Rentals are leading providers you can book with here.

  • Lock in the best deal by booking your vehicle from St Lucia Hewanorra Airport about one week before your trip.

St Lucia Vigie Airport (SLU)

  • Once your flight from Philadelphia to Castries has landed, you can reach the city centre in around 10 minutes by car. Central Castries is approximately 2 kilometres from St Lucia Vigie Airport (SLU).

  • If you choose to travel on public transport, the ride to the centre takes 15 minutes or so.

  • After your flight from Philadelphia to Castries, kick back at a hotel close to SLU. These are some great options that'll help you get into relaxation mode:

  • The fastest way to get to where you're going is with a St Lucia Vigie Airport rental car. Collect your wheels from Drive A Matic, Final Rentals or Sixt and be on your way in a flash.

  • Lock in the best price by booking your ride from SLU one week in advance. You can also expect to have a greater range of vehicles.

Best time to go to Castries

  • December is the most popular month for flights from Philadelphia to Castries. To steer clear of the crowds, go to Castries in September.

  • Book a Philadelphia to Castries ticket departing in September if you're eager to explore the city during its warmest month. You can expect temperatures in Castries to range from 26ºC (79ºF) to 30ºC (86ºF).

  • If you want 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, take your pick from prime hotels that put you close to the action. Make one of these options your base for exploring Castries:

  • There are so many things to discover in this city it can be hard to work out where to start. Vigie Beach, Malabar Beach and Morne Fortune are leading attractions which should feature on every Castries itinerary.

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