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Cheap flights from Washington, D.C. Reagan-National Airport to Castries from $491

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to Castries departing on 8/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Castries

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:55 pm - 7:00 pm
DCA
-
SLU
24h 05m
2 stops
Multiple Airlines Logo
12:35 pm - 8:52 am
SLU
-
DCA
20h 17m
2 stops
$914Multiple Airlines
Sa, Jun 13 - Mi, Jun 17
Multiple Airlines Logo
8:40 pm - 7:00 pm
DCA
-
SLU
22h 20m
2 stops
Multiple Airlines Logo
12:35 pm - 8:53 am
SLU
-
DCA
20h 18m
2 stops
$918Multiple Airlines
So, Jun 7 - Sa, Jun 13
Multiple Airlines Logo
6:59 am - 7:00 pm
DCA
-
SLU
12h 01m
2 stops
Multiple Airlines Logo
9:10 am - 8:57 am
SLU
-
DCA
23h 47m
2 stops
$975Multiple Airlines
Do, Okt 15 - Sa, Okt 24
Multiple Airlines Logo
6:00 am - 1:40 pm
DCA
-
SLU
31h 40m
3 stops
Multiple Airlines Logo
2:15 pm - 9:05 pm
SLU
-
DCA
30h 50m
2 stops
$1,003Multiple Airlines
Fr, Sep 18 - Mo, Sep 21
Multiple Airlines Logo
6:00 am - 1:40 pm
DCA
-
SLU
31h 40m
3 stops
Multiple Airlines Logo
12:35 pm - 10:37 pm
SLU
-
DCA
34h 02m
2 stops
$1,075Multiple Airlines
So, Okt 18 - Sa, Okt 24
Multiple Airlines Logo
6:00 am - 1:45 pm
DCA
-
SLU
31h 45m
3 stops
Multiple Airlines Logo
2:10 pm - 10:59 pm
SLU
-
DCA
32h 49m
2 stops
$1,079Multiple Airlines
So, Aug 16 - Sa, Aug 22
Multiple Airlines Logo
6:55 pm - 7:00 pm
DCA
-
SLU
24h 05m
2 stops
Multiple Airlines Logo
12:35 pm - 10:37 pm
SLU
-
DCA
34h 02m
2 stops
$1,090Multiple Airlines
So, Okt 18 - Sa, Okt 24
Multiple Airlines Logo
8:40 pm - 7:00 pm
DCA
-
SLU
21h 20m
2 stops
Multiple Airlines Logo
9:10 am - 10:21 am
SLU
-
DCA
26h 11m
2 stops
$1,096Multiple Airlines
Do, Nov 12 - Mo, Nov 16
Multiple Airlines Logo
8:40 pm - 7:00 pm
DCA
-
SLU
22h 20m
2 stops
Multiple Airlines Logo
12:35 pm - 8:52 am
SLU
-
DCA
20h 17m
2 stops
$1,119Multiple Airlines
Do, Jul 9 - Mo, Jul 13
Multiple Airlines Logo
8:40 pm - 7:00 pm
DCA
-
SLU
22h 20m
2 stops
Multiple Airlines Logo
12:35 pm - 8:52 am
SLU
-
DCA
20h 17m
2 stops
$1,123Multiple Airlines
Do, Jul 23 - Di, Jul 28

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport 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, momondo users made 832,500 searches. Data last updated Mai 27, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Castries that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

Sa 6/13

6:55 pm-7:00 pm

2 stops24h 05m

Castries George F. L. Charle

Mi 6/17

12:35 pm-8:52 am

2 stops20h 17m

$914

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

So 6/7

8:40 pm-7:00 pm

2 stops22h 20m

Castries George F. L. Charle

Sa 6/13

12:35 pm-8:53 am

2 stops20h 18m

$918
Quickest round-trip

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

Do 10/15

6:59 am-7:00 pm

2 stops12h 01m

Castries George F. L. Charle

Sa 10/24

9:10 am-8:57 am

2 stops23h 47m

$975

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

Fr 9/18

6:00 am-1:40 pm

3 stops31h 40m

Castries George F. L. Charle

Mo 9/21

2:15 pm-9:05 pm

2 stops30h 50m

$1,003

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

So 10/18

6:00 am-1:40 pm

3 stops31h 40m

Castries George F. L. Charle

Sa 10/24

12:35 pm-10:37 pm

2 stops34h 02m

$1,075

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

So 8/16

6:00 am-1:45 pm

3 stops31h 45m

Castries George F. L. Charle

Sa 8/22

2:10 pm-10:59 pm

2 stops32h 49m

$1,079

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

So 10/18

6:55 pm-7:00 pm

2 stops24h 05m

Castries George F. L. Charle

Sa 10/24

12:35 pm-10:37 pm

2 stops34h 02m

$1,090

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

Do 11/12

8:40 pm-7:00 pm

2 stops21h 20m

Castries George F. L. Charle

Mo 11/16

9:10 am-10:21 am

2 stops26h 11m

$1,096

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

Do 7/9

8:40 pm-7:00 pm

2 stops22h 20m

Castries George F. L. Charle

Mo 7/13

12:35 pm-8:52 am

2 stops20h 17m

$1,119

Washington, D.C.Castries

DCA - SLU

DCASLU

Washington, D.C. Reagan-National

Do 7/23

8:40 pm-7:00 pm

2 stops22h 20m

Castries George F. L. Charle

Di 7/28

12:35 pm-8:52 am

2 stops20h 17m

$1,123

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
1
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When to book flights from Washington, D.C. Reagan-National Airport to Castries

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport to Castries according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Reagan-National Airport to Castries (DCA to SLU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Castries

Fastest flight time

12h 01m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Castries takes 12h 01m
There are no direct flights from Washington, D.C. Reagan-National Airport to Castries. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Castries.
Search flight deals

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Castries

  • How far is Washington, D.C. Reagan-National to Castries George F. L. Charle by plane?

    The distance between Washington, D.C. Reagan-National and Castries George F. L. Charle is about 1974.4 mi. Flights usually cover this in 12h 01m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Castries George F. L. Charle Airport?

    Prices for flights from Washington, D.C. Reagan-National Airport to Castries George F. L. Charle Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Castries George F. L. Charle Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Castries George F. L. Charle Airport.

  • What documentation or ID do you need to fly to Castries George F. L. Charle Airport?

    The required travel and health documents for your Castries George F. L. Charle Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Castries George F. L. Charle Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Castries

  • How do I get Price Alerts for flights from Washington, D.C. Reagan-National Airport to Castries?

    Search flight deals from Washington, D.C. Reagan-National Airport to Castries. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Washington, D.C. Reagan-National Airport to Castries with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

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

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Castries?

It is quick and easy to find Washington, D.C. to Castries flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Castries that suits you.

Can I find flights from Washington, D.C. to Castries with flexible booking policies on momondo?

Yes. All flights to Castries from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington, D.C. to Castries?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Castries.

I’m not ready to book a flight from Washington, D.C. to Castries right now. Can momondo alert me if prices change?

Price alerts on flights to Castries from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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