WAS - SLU

$824 Find Cheap Flights from Washington, D.C. to Castries

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Castries departing on 11/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Castries

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Castries, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Castries, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$824
Typical prices: $820-$1,339
Multiple Airlines
Wed 11/19Sun 11/23
BWI - SLU • 3 stops
Cheapest one-way
Multiple Airlines
Mon 10/27
WAS - SLU • multi-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Castries!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to Castries (WAS-SLU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Castries that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Castries

Wed, Nov 19 - Sun, Nov 23
Multiple Airlines Logo
4:52 pm - 3:15 pmBWI-SLU
45h 23m3 stops
Multiple Airlines Logo
5:00 am - 11:19 pmSLU-BWI
19h 19m3 stops
$824Multiple Airlines
Find Deal
Wed, Nov 19 - Sun, Nov 23
Multiple Airlines Logo
4:52 pm - 3:15 pmBWI-SLU
45h 23m3 stops
Multiple Airlines Logo
5:00 am - 11:17 pmSLU-BWI
19h 17m2 stops
$842Multiple Airlines
Find Deal
Mon, Nov 17 - Thu, Nov 20
Multiple Airlines Logo
4:10 pm - 7:00 pmDCA-SLU
25h 50m3 stops
Multiple Airlines Logo
9:10 am - 12:19 pmSLU-DCA
28h 09m3 stops
$856Multiple Airlines
Find Deal
Thu, Feb 26 - Sun, Mar 1
Multiple Airlines Logo
7:00 am - 3:15 pmBWI-SLU
31h 15m3 stops
Multiple Airlines Logo
7:10 pm - 12:19 amSLU-BWI
30h 09m2 stops
$877Multiple Airlines
Find Deal
Mon, Nov 17 - Thu, Nov 20
Multiple Airlines Logo
4:10 pm - 7:00 pmDCA-SLU
25h 50m3 stops
Multiple Airlines Logo
6:20 pm - 6:05 pmSLU-DCA
24h 45m2 stops
$887Multiple Airlines
Find Deal
Fri, Nov 28 - Sun, Dec 7
Multiple Airlines Logo
5:40 am - 1:10 pmBWI-SLU
30h 30m2 stops
Multiple Airlines Logo
5:00 am - 9:17 amSLU-BWI
29h 17m3 stops
$895Multiple Airlines
Find Deal
Tue, Nov 18 - Fri, Nov 21
Multiple Airlines Logo
11:05 am - 9:30 amDCA-SLU
21h 25m3 stops
Multiple Airlines Logo
1:55 pm - 10:26 amSLU-DCA
21h 31m3 stops
$938Multiple Airlines
Find Deal
Tue, Nov 18 - Fri, Nov 21
Multiple Airlines Logo
9:40 am - 9:30 amDCA-SLU
22h 50m2 stops
Multiple Airlines Logo
1:55 pm - 10:26 amSLU-DCA
21h 31m3 stops
$945Multiple Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12
Multiple Airlines Logo
4:30 pm - 7:00 pmIAD-SLU
25h 30m2 stops
Multiple Airlines Logo
12:35 pm - 8:59 pmSLU-IAD
33h 24m2 stops
$963Multiple Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12
Multiple Airlines Logo
4:10 pm - 7:00 pmDCA-SLU
25h 50m3 stops
Multiple Airlines Logo
9:10 am - 10:26 amSLU-DCA
26h 16m2 stops
$963Multiple Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Castries flights

Get data-powered insights and trends into flights from Washington, D.C. to Castries to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between Washington, D.C. and Castries?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Washington, D.C. to Castries.

There is just one airline that flies from Washington, D.C. to Castries direct and that is American Airlines. The best round-trip deal found from American Airlines for the route is $610.

Find deals

Good to know

Low seasonOctober
Cheapest flight$824
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Baltimore to Castries

When to book flights from Washington, D.C. to Castries

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Castries based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Castries

  • What is the cheapest flight from Washington, D.C. to Castries?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Castries was $824 for a round-trip ticket.

  • Do I need a passport to fly between Washington, D.C. and Castries?

    Yes

  • Which aircraft models fly most regularly from Washington, D.C. to Castries?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Castries?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Castries.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Castries?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Castries from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Castries?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Castries with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Castries?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Castries from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Washington, D.C. to Castries

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Castries. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Castries? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11030 reviews
7.2Comfort
8.0Crew
6.4Food
6.9Entertainment
7.5Boarding
Airline reviews

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

10.0 ExcellentMax, Oct 2025DCA - SAV
Read more American Airlines reviews

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

We are too tired and frustrated to comment politely at this point

Terrible. Our luggage was delayed and couldn’t be delivered for several days. We got bad information from the airline agents at baggage claim. We had to pick up our car so we wouldn’t be charged for an extra day. We got lost in the maze of airport parking. The baggage claim agents didn’t offer us any compensation for our extra time and expense. We are tired, hungry and very frustrated.

The flight was flawless and we even arrived between 20 and 25 minutes early!

The only thing to like was that we eventually got to our destination

Delayed delayed delayed and no offer for food or vouchers

Disliked having to wait a little longer to disembark from the plan when we landed in London

Everything you need to know for your flight from Washington, D.C. to Castries

Information on your arrival and departure airports

Castries (SLU)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.