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Cheap Flights from Philadelphia to Castries
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Cheap Flights from Philadelphia to Castries starting at S$ 679

For as little as S$ 679, you can take your next adventure to Castries without breaking the bank. Choose between one-way and return tickets from Philadelphia below.

  • One way
  • Round-trip
      • Cheapest nonstop
        PHL08:20
        4h 40m
        Nonstop
        UVF14:00
        Sat, Dec 21|Philadelphia - Castries|American Airlines
        S$ 679S$ 930
        27% OFF
        27% OFF
        S$ 930S$ 679

        Fly from Philadelphia to Castries on Sat, Dec 21 with American Airlines. One-way direct flights with American Airlines depart Philadelphia International Airport and arrive Hewanorra Airport starting at S$ 679 including taxes and charges.

      • PHL08:00
        29h 55m
        1 stop
        UVF14:55
        Sat, Dec 14|Philadelphia - Castries|Frontier Airlines
        S$ 218S$ 930
        77% OFF
        77% OFF
        S$ 930S$ 218

        Fly from Philadelphia to Castries on Sat, Dec 14 with Frontier Airlines. One-way connecting flights with Frontier Airlines depart Philadelphia International Airport and arrive Hewanorra Airport starting at S$ 218 including taxes and charges.

      • PHL08:00
        29h 55m
        1 stop
        UVF14:55
        Sat, Dec 7|Philadelphia - Castries|Frontier Airlines
        S$ 226S$ 930
        76% OFF
        76% OFF
        S$ 930S$ 226

        Fly from Philadelphia to Castries on Sat, Dec 7 with Frontier Airlines. One-way connecting flights with Frontier Airlines depart Philadelphia International Airport and arrive Hewanorra Airport starting at S$ 226 including taxes and charges.

      • PHL21:10
        16h 45m
        1 stop
        UVF14:55
        Sat, Dec 14|Philadelphia - Castries|American Airlines
        S$ 261
        S$ 261

        Fly from Philadelphia to Castries on Sat, Dec 14 with American Airlines. One-way connecting flights with American Airlines depart Philadelphia International Airport and arrive Hewanorra Airport starting at S$ 261 including taxes and charges.

      • PHL08:15
        29h 40m
        1 stop
        UVF14:55
        Sat, Dec 14|Philadelphia - Castries|Jetblue Airways
        S$ 269
        S$ 269

        Fly from Philadelphia to Castries on Sat, Dec 14 with Jetblue Airways. One-way connecting flights with Jetblue Airways depart Philadelphia International Airport and arrive Hewanorra Airport starting at S$ 269 including taxes and charges.

      • PHL21:10
        17h 27m
        1 stop
        UVF15:37
        Fri, Dec 13|Philadelphia - Castries|American Airlines
        S$ 270
        S$ 270

        Fly from Philadelphia to Castries on Fri, Dec 13 with American Airlines. One-way connecting flights with American Airlines depart Philadelphia International Airport and arrive Hewanorra Airport starting at S$ 270 including taxes and charges.

      • PHL20:15
        18h 22m
        1 stop
        UVF15:37
        Fri, Dec 13|Philadelphia - Castries|Jetblue Airways
        S$ 272
        S$ 272

        Fly from Philadelphia to Castries on Fri, Dec 13 with Jetblue Airways. One-way connecting flights with Jetblue Airways depart Philadelphia International Airport and arrive Hewanorra Airport starting at S$ 272 including taxes and charges.

      • PHL08:15
        29h 40m
        1 stop
        UVF14:55
        Sat, Dec 7|Philadelphia - Castries|Jetblue Airways
        S$ 298
        S$ 298

        Fly from Philadelphia to Castries on Sat, Dec 7 with Jetblue Airways. One-way connecting flights with Jetblue Airways depart Philadelphia International Airport and arrive Hewanorra Airport starting at S$ 298 including taxes and charges.

      • PHL21:10
        16h 45m
        1 stop
        UVF14:55
        Sat, Dec 7|Philadelphia - Castries|American Airlines
        S$ 299
        S$ 299

        Fly from Philadelphia to Castries on Sat, Dec 7 with American Airlines. One-way connecting flights with American Airlines depart Philadelphia International Airport and arrive Hewanorra Airport starting at S$ 299 including taxes and charges.

      • PHL15:55
        19h 53m
        1 stop
        UVF12:48
        Fri, Nov 29|Philadelphia - Castries|Jetblue Airways
        S$ 304
        S$ 304

        Fly from Philadelphia to Castries on Fri, Nov 29 with Jetblue Airways. One-way connecting flights with Jetblue Airways depart Philadelphia International Airport and arrive Hewanorra Airport starting at S$ 304 including taxes and charges.

      • PHL13:00
        3h 5m
        Nonstop
        SLU14:00
        Thu, Nov 28|Philadelphia - Castries|American Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Cheapest time to fly from Philadelphia to Castries

These price trend charts carefully monitor and predict how flight prices from Philadelphia to Castries will change. Keep a close eye on them to understand when the best time to buy your tickets is.

Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.

Cheapest Airlines flying from Philadelphia to Castries

We have a range of prices from different airlines providing flights from Philadelphia to Castries. Check below for the journey which best suits your travel needs.

Frontier Airlines
From S$ 218
American Airlines
From S$ 261
Jetblue Airways
From S$ 269
Air Canada
From S$ 297
Delta Air Lines
From S$ 370
United Airlines
From S$ 487
Westjet
From S$ 2,067
British Airways
From S$ 5,535

Find more flights and airlines

Alternative Routes from Philadelphia to Castries

There are various non-direct routes from Philadelphia to Castries which could be cheaper and faster! Check out these alternative options to see if they could work for your trip.

  • Cheapest
    Frontier Airlines
    PHL
    08:00
    29h 55m
    1 transfer
    UVF
    14:55
    Philadelphia International Airport - Hewanorra Airport
    Sat, Dec 14Frontier Airlines
    S$ 218
  • Frontier Airlines
    PHL
    07:50
    25h 55m
    2 transfer
    SLU
    10:45
    Philadelphia International Airport - George F. L. Charles Airport
    Fri, Feb 7Frontier Airlines
    S$ 478
  • Frontier Airlines
    TTN
    13:01
    44h 44m
    2 transfer
    SLU
    10:45
    Trenton Mercer Airport - George F. L. Charles Airport
    Thu, Feb 13Frontier Airlines
    S$ 580
  • Frontier Airlines
    TTN
    13:01
    44h 44m
    2 transfer
    SLU
    10:45
    Trenton Mercer Airport - George F. L. Charles Airport
    Thu, Feb 13Frontier Airlines
    S$ 580
    Find More Flights

Frequently Asked Questions

  • When to buy flight tickets from Philadelphia (PHL) to Castries (SLU) the cheapest?

    Airlines adjust prices for flights from Philadelphia to Castries based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much is a flight from Philadelphia (PHL) to Castries (SLU) cost?

    According to Trip.com's data, the lowest price is around S$ 846.

  • What is the transportation method from the main airport to downtown in Castries?

    • The distance from Hewanorra Airport to downtown is about 30km, by taxi about 50 minutes.
    • The distance from George F. L. Charles Airport to downtown is about 1km, by taxi about 20 minutes.

  • What's the most popular airline for direct flights from Philadelphia (PHL) to Castries (SLU)?

    American Airlines operates 2 direct flights from Philadelphia (PHL) to Castries (SLU).

  • How many airports in Castries?

    There are 2 airports near Castries: George F. L. Charles Airport and Hewanorra Airport.

How to find a cheap flight from Philadelphia to Castries

If you leave it until the last minute and forget to check some of the key information when booking tickets, prices can often end up skyrocketing. Below, you can find our top tips for getting the best value flights – from changing dates to chasing deals, there are plenty ways to keep your next trip affordable.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Find cheapest flight ticket from Philadelphia to Castries

Cheapest direct flight priceS$ 218
Cheapest return ticket priceS$ 1,479
Off-season for travelNovember
Peak season for travelFebruary
Flight distance3,193.8km
Popular airlineAmerican Airlines

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