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Castries

$605+ Cheap flights from Philadelphia (PHL) to Castries (SLU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SLU
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Philadelphia to Castries

Cheapest flights from Philadelphia to Castries
Explore the most affordable flight options available from Philadelphia to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Mytrip deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:17 amPHL - SLU
2 stops27h 13mMultiple Airlines
Fri 1/21:55 pmSLU - PHL
3 stops34h 39mMultiple Airlines
Deal found 12/10$1,837
This Expedia deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/217:50 amPHL - SLU
2 stops30h 45mMultiple Airlines
Wed 12/2410:15 amSLU - PHL
2 stops30h 34mMultiple Airlines
Deal found 12/10$3,817

Find flight deals from Philadelphia to Castries

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Castries (SLU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$818
(Mytrip)

One-way from

$605
(Kiwi.com)

Popular in

June

Cheapest in

August

Good round-trip deal

$592 or less
Provider with most accurate pricing for Philadelphia-Castries George F. L. Charle flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-Castries George F. L. Charle flights.
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From Philadelphia to Castries George F. L. Charle
Search Deals
One-way flight from Philadelphia to Castries George F. L. Charle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($87 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Price to beat on a round-trip flight from Philadelphia to Castries George F. L. Charle.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Castries that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from Philadelphia to Castries that are best for you.

Fly from

Philadelphia

Fly to

Castries

Route

Depart

Return

Price

PhiladelphiaCastries

PHL - SLU

PHLSLU

Philadelphia

Thu 1/1

6:10 am-3:15 pm

2 stops32h 05m

Castries George F. L. Charle

Wed 1/7

10:15 am-8:01 pm

2 stops34h 46m

$907

PhiladelphiaCastries

PHL - SLU

PHLSLU

Philadelphia

Wed 1/7

5:17 am-2:35 pm

3 stops32h 18m

Castries George F. L. Charle

Sun 1/11

7:10 pm-4:49 pm

2 stops22h 39m

$941

PhiladelphiaCastries

PHL - SLU

PHLSLU

Philadelphia

Fri 1/2

7:50 am-7:00 pm

3 stops34h 10m

Castries George F. L. Charle

Thu 1/8

6:20 pm-4:49 pm

2 stops23h 29m

$1,010

PhiladelphiaCastries

PHL - SLU

PHLSLU

Philadelphia

Thu 3/19

5:16 pm-1:10 pm

3 stops43h 54m

Castries George F. L. Charle

Tue 3/24

7:30 am-8:48 pm

3 stops37h 18m

$1,203

PhiladelphiaCastries

PHL - SLU

PHLSLU

Philadelphia

Wed 2/18

8:06 am-1:10 pm

2 stops28h 04m

Castries George F. L. Charle

Sat 2/21

6:20 pm-11:50 pm

2 stops30h 30m

$1,499

PhiladelphiaCastries

PHL - SLU

PHLSLU

Philadelphia

Fri 4/24

4:25 pm-1:10 pm

2 stops20h 45m

Castries George F. L. Charle

Tue 4/28

7:30 am-10:53 pm

3 stops39h 23m

$1,800

PhiladelphiaCastries

PHL - SLU

PHLSLU

Philadelphia

Tue 12/30

5:17 am-9:30 am

2 stops27h 13m

Castries George F. L. Charle

Fri 1/2

1:55 pm-11:34 pm

3 stops34h 39m

$1,837

PhiladelphiaCastries

PHL - SLU

PHLSLU

Philadelphia

Fri 12/26

7:42 pm-3:15 pm

3 stops42h 33m

$605

PhiladelphiaCastries

PHL - SLU

PHLSLU

Philadelphia

Thu 12/18

7:42 pm-8:45 am

2 stops36h 03m

$637

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Compare providers for flights from Philadelphia to Castries

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Castries in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Castries flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Philadelphia-Castries flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Philadelphia-Castries flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Castries flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Castries flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Castries

What is the cheapest month to book a flight from Philadelphia to Castries?

Currently, September is the cheapest month in which you can book a flight from Philadelphia to Castries (average of $151). Flying from Philadelphia to Castries in August is currently the most expensive (average of $394). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Castries

Get insights into the airlines that provide service to Castries. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Castries. Reviews last updated December 12, 2025.
Get a feel of what it's like to fly with American Airlines from Philadelphia to Castries by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,050 reviews

Crew

8.0

Food

6.5

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
American Airlines
7.2
Good
11,050 reviews
American Airlines
7.2
Good
11,050 reviews

Crew

8.0

Food

6.5

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Castries. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Philadelphia to Castries round-trip?

    According to our current data, American Airlines ($556), offers the cheapest pricing from Philadelphia to Castries. American Airlines is 27% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Philadelphia to Castries that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Castries flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Castries?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Castries.

  • Can I find deals for business class flights from Philadelphia to Castries?

    Yes. Cheapflights offers flight deals from Philadelphia to Castries by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to Castries?

    Currently, September is the cheapest month in which you can book a flight from Philadelphia to Castries (average of $151). Flying from Philadelphia to Castries in August is currently the most expensive (average of $394). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Castries?

Book flights to Castries if you plan to visit one of these locations
Gros Islet
Rodney Bay
Marigot Bay

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Philadelphia to Castries

Discover the top airline that operate flights from Philadelphia to Castries. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$556Average$813FlexibilityNo cancel feeOn-time71%

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