What is the cheapest day to fly from Washington, D.C. to Castries?

Travelers seeking maximum savings on their Washington, D.C. to Castries flight should consider departing on Monday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular routes from Washington, D.C. to Castries?

When deciding which route to take from Washington, D.C. to Castries consider Washington, D.C. Dulles Intl - Castries George F. L. Charle, Washington, D.C. Reagan-National - Castries George F. L. Charle or Baltimore/Washington - Castries George F. L. Charle as they are the most popular.

What is the cheapest day to fly round-trip from Washington, D.C. to Castries?

Sunday is generally a great day to depart. Flying on this day could help you save up to 26%.

What is the cheapest month to fly from Washington, D.C. to Castries?

Our data shows that March tends to be the cheapest month to fly to Castries from Washington, D.C.. Users have commonly found prices around $742 for the month, but tickets can be as low as $579. Due to multiple factors, prepare for potentially higher prices in December.

Most accurate provider : When it comes to deals on Washington, D.C.-Castries flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Castries flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Castries flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C.-Castries flights, Cheapflights users trust FlightHub the most. FlightHub 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 Washington, D.C.-Castries flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Castries from Washington, D.C.?

Most people fly into Castries George F. L. Charle (SLU) if they book a flight to Castries from Washington, D.C.. On average, George F. L. Charle has 0 inbound flights from Washington, D.C. per day from 1 airline. Castries George F. L. Charle is conveniently located just 0.7 mi from Castries’s city center.

Can I find deals for flights from Washington, D.C. to Castries that include hotel bookings?

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

How can I find direct flights from Washington, D.C. to Castries?

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

Can I find deals for business class flights from Washington, D.C. to Castries?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$784+ Flights from Washington, D.C. to Castries

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Cheap flight deals from Washington, D.C. to Castries

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$784 (Mytrip)
Popular in	December
Cheapest in	March
Average price	$656

Provider with most accurate pricing for Washington, D.C. (WAS)-Castries George F. L. Charle flight deals.

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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Castries George F. L. Charle flights.

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From Washington, D.C. (WAS) to Castries George F. L. Charle

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($115 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($39 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

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Find flight deals from Washington, D.C. to Castries

Cheapest flights from Washington, D.C. to Castries
Explore the most affordable flight options available from Washington, D.C. to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Tue 5/138:00 amBWI - SLU

3 stops27h 25mMultiple Airlines

Sun 5/1812:30 pmSLU - BWI

2 stops35h 47mMultiple Airlines

Deal found 2/18

$784

Fri 2/288:40 pmDCA - SLU

3 stops24h 30mMultiple Airlines

Tue 3/47:30 amSLU - DCA

3 stops27h 59mMultiple Airlines

Deal found 2/18

$1,162

Tue 7/82:22 amIAD - SLU

3 stops32h 23mMultiple Airlines

Sun 7/135:00 amSLU - IAD

3 stops33h 23mMultiple Airlines

Deal found 2/19

$1,170

Best flights from Washington, D.C. to Castries
Discover carefully curated flight deals from Washington, D.C. to Castries that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Tue 5/138:00 amBWI - SLU

3 stops27h 25mMultiple Airlines

Sun 5/1812:30 pmSLU - BWI

2 stops35h 47mMultiple Airlines

Deal found 2/18

$784

Fri 2/288:40 pmDCA - SLU

3 stops24h 30mMultiple Airlines

Tue 3/47:30 amSLU - DCA

3 stops27h 59mMultiple Airlines

Deal found 2/18

$1,162

Fri 3/2110:35 amIAD - SLU

3 stops32h 25mMultiple Airlines

Fri 3/289:25 amSLU - IAD

3 stops29h 48mMultiple Airlines

Deal found 2/20

$1,302

Last-minute flights from Washington, D.C. to Castries
Discover last-minute flight deals from Washington, D.C. to Castries. Data last updated February 20, 2025 and is based on user searches.

Fri 2/288:40 pmDCA - SLU

3 stops24h 30mMultiple Airlines

Tue 3/47:30 amSLU - DCA

3 stops27h 59mMultiple Airlines

Deal found 2/18

$1,162

Fri 2/282:35 pmIAD - SLU

2 stops27h 25mMultiple Airlines

Tue 3/49:25 amSLU - IAD

2 stops25h 21mMultiple Airlines

Deal found 2/18

$1,650

Fri 3/216:35 amBWI - SLU

2 stops28h 10mMultiple Airlines

Fri 3/2812:15 pmSLU - BWI

3 stops35h 57mMultiple Airlines

Deal found 2/19

$822

Fri 3/2110:35 amIAD - SLU

3 stops32h 25mMultiple Airlines

Fri 3/289:25 amSLU - IAD

3 stops29h 48mMultiple Airlines

Deal found 2/20

$1,302

One-way flights from Washington, D.C. to Castries
Search for one-way flight options from Washington, D.C. to Castries. Find affordable one-way fares based on user searches. Data last updated February 20, 2025.

Tue 3/47:35 pmDCA - SLU

3 stops22h 25mMultiple Airlines

Deal found 2/19

$834

Find flights from Washington, D.C. to Castries within your budget

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreCastries

BWI - SLU

BWISLU

Baltimore/Washington

Tue 5/13

8:00 am-11:25 am

3 stops27h 25m

Castries George F. L. Charle

Sun 5/18

12:30 pm-12:17 am

2 stops35h 47m

$784

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

Fri 2/28

8:40 pm-10:10 pm

3 stops24h 30m

Castries George F. L. Charle

Tue 3/4

7:30 am-10:29 am

3 stops27h 59m

$1,162

Washington, D.C.Castries

IAD - SLU

IADSLU

Washington, D.C. Dulles Intl

Fri 3/21

3:55 pm-7:00 pm

2 stops27h 05m

Castries George F. L. Charle

Fri 3/28

9:25 am-3:13 pm

3 stops29h 48m

$1,302

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

Tue 3/4

7:35 pm-7:00 pm

3 stops22h 25m

$834

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Compare providers for flights from Washington, D.C. to Castries

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Castries in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star

*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 Washington, D.C.-Castries flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Castries flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Castries flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C.-Castries flights, Cheapflights users trust FlightHub the most. FlightHub 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 Washington, D.C.-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 Washington, D.C. to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from Washington, D.C. 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.

Travel insights for flights from Washington, D.C. to Castries

Get recent, data-driven insights about flights from Washington, D.C. to Castries including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Washington, D.C. to Castries?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Castries (average of $525). Flying from Washington, D.C. to Castries in July is currently the most expensive (average of $767). 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.

What is the cheapest time of day to fly from WAS to SLU?

It’s typically best to fly out from Washington, D.C. to Castries at noon. Doing so could potentially save you 7% on the flight price compared to flying in the morning, which is usually more expensive.

Related info for your journey

What airport do you fly into for flights to Castries from Washington, D.C.?
Most people fly into Castries George F. L. Charle (SLU) if they book a flight to Castries from Washington, D.C.. On average, George F. L. Charle has 0 inbound flights from Washington, D.C. per day from 1 airline. Castries George F. L. Charle is conveniently located just 0.7 mi from Castries’s city center.
What are the most popular routes from Washington, D.C. to Castries?
When deciding which route to take from Washington, D.C. to Castries consider Washington, D.C. Dulles Intl - Castries George F. L. Charle, Washington, D.C. Reagan-National - Castries George F. L. Charle or Baltimore/Washington - Castries George F. L. Charle as they are the most popular.
Can I find deals for flights from Washington, D.C. to Castries that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Castries flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Castries?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Castries.
Can I find deals for business class flights from Washington, D.C. to Castries?
Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to Castries?
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Castries (average of $525). Flying from Washington, D.C. to Castries in July is currently the most expensive (average of $767). 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.

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Alternative routes for Washington, D.C. to Castries

Dulles Intl to Castries flights

Reagan-National to Castries flights

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Top airline flying from Washington, D.C. to Castries

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$535	Average$798	FlexibilityNo cancel fee	On-time71%

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$784+ Cheap flights from Washington, D.C. (WAS) to Castries (SLU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Castries with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Washington, D.C. to Castries

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Washington, D.C. to Castries

Cheapest flights from Washington, D.C. to CastriesExplore the most affordable flight options available from Washington, D.C. to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Explore the most affordable flight options available from Washington, D.C. to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Find flights from Washington, D.C. to Castries within your budget

Compare providers for flights from Washington, D.C. 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 Washington, D.C. to Castries in February.

Best time to book a flight from Washington, D.C. to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from Washington, D.C. with our price prediction graph.

Travel insights for flights from Washington, D.C. to Castries

Get recent, data-driven insights about flights from Washington, D.C. to Castries including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Washington, D.C. to Castries?

What is the cheapest time of day to fly from WAS to SLU?

Find hourly flight availability from Washington, D.C. to Castries. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Related info for your journey

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

What airport do you fly into for flights to Castries from Washington, D.C.?

What are the most popular routes from Washington, D.C. to Castries?

Can I find deals for flights from Washington, D.C. to Castries that include hotel bookings?

How can I find direct flights from Washington, D.C. to Castries?

Can I find deals for business class flights from Washington, D.C. to Castries?

What is the cheapest month to book a flight from Washington, D.C. to Castries?

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Alternative routes for Washington, D.C. to Castries

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Cheapest flights from Washington, D.C. to Castries
Explore the most affordable flight options available from Washington, D.C. to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.