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WAS - SLU

$608 Find cheap flights from Washington, D.C. to Castries

This is the cheapest one-way 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 6/15. 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
0 bags
Wed 6/5
Wed 6/12

Search 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
In the last 7 days travelers have searched 42,830,901 times on KAYAK, and here is why:

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Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
6:30 am - 11:30 amBWI-SLU
29h 00m3 stops
5:00 am - 8:30 pmSLU-BWI
15h 30m2 stops
Thu, May 23 - Sun, May 26
6:30 am - 3:50 pmBWI-SLU
33h 20m3 stops
3:20 pm - 5:49 pmSLU-BWI
26h 29m3 stops
Sun, May 19 - Thu, May 23
4:58 pm - 11:30 amBWI-SLU
42h 32m3 stops
5:00 am - 12:45 amSLU-BWI
19h 45m2 stops
$1,002
Find Deal
Wed, Jun 19 - Sun, Jun 23
6:30 am - 3:50 pmBWI-SLU
33h 20m3 stops
5:00 am - 8:30 pmSLU-BWI
15h 30m2 stops
$1,025
Find Deal
Sun, May 19 - Sun, May 26
6:49 am - 11:30 amBWI-SLU
28h 41m2 stops
5:00 am - 8:30 pmSLU-BWI
15h 30m2 stops
$1,029
Find Deal
Thu, May 23 - Sun, May 26
10:40 am - 11:25 amBWI-SLU
24h 45m3 stops
3:20 pm - 5:49 pmSLU-BWI
26h 29m3 stops
$1,030
Find Deal
Mon, May 20 - Thu, May 23
6:39 pm - 10:10 pmBWI-SLU
27h 31m2 stops
5:00 am - 8:30 pmSLU-BWI
15h 30m2 stops
$1,043
Find Deal
Fri, May 24 - Sun, May 26
6:49 am - 10:10 pmBWI-SLU
15h 21m3 stops
5:00 am - 8:30 pmSLU-BWI
15h 30m2 stops
$1,051
Find Deal
Sat, May 25 - Sun, May 26
6:14 am - 11:25 amBWI-SLU
29h 11m3 stops
5:00 am - 8:30 pmSLU-BWI
15h 30m2 stops
$1,069
Find Deal
Mon, May 20 - Sun, May 26
6:30 am - 3:50 pmBWI-SLU
33h 20m3 stops
4:25 pm - 11:32 pmSLU-BWI
31h 07m3 stops
$1,129
Find Deal
Sun, May 19 - Tue, May 21

Flights from Washington, D.C. to Castries - Travel Insights & Trends

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.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. to Castries, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Washington, D.C. to Castries is February, where tickets cost $629 on average. On the other hand, the most expensive months are December and September, where the average cost of tickets is $1,493 and $1,044 respectively.

Good to know

Low season

September

High season

July

Cheapest flight

$608
Best time to beat the crowds but there is an average 18% increase in price.
Most popular time to fly and prices are also 13% 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 $608 for a one-way ticket and $977 for a round-trip.

  • 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.

See more FAQs

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.
7.3
American AirlinesOverall score based on 14713 reviews
8.0Crew
7.2Comfort
7.1Entertainment
6.6Food
7.6Boarding
Airline reviews

Overall the flights pretty good. The snacks we’re good and they were plenty of them. Both boarding and deplaning went quickly.

8.0 ExcellentAnonymous, Apr 2024DCA - MSY
Read more about American Airlines reviews

Overall the flights pretty good. The snacks we’re good and they were plenty of them. Both boarding and deplaning went quickly.

Delayed abs delayed Gate crew giving poor info - we are definitely leaving at —- Ultimately to cancel flight after 4+ hours of delays Just cancel it earlier

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

Lots of weather delays that were poorly communicated and managed. I get there are weather delays but they didn’t make it clear what was happening or comfortable on the plane

Everything was on time; the flight attendants and the gate personnel were very pleasant and helpful.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Perfect flight. On time departure and early arrival. Smooth flight.

Awful! The flight was delayed and we sat on the plane in DCA for an hour because fuel was out in the wrong part of the plane and would not be accessible during flight. So the plane had to be refueled in correct tank. They also allowed someone to get off of the plane. This delayed my six hour flight by an hour and made me miss my connecting flight. I ran to new gate and American Airlines agents new about the delay and even knew that I was trying to make the connection. They knew thru communication with my friend while in flight that I was in the airport and running to the new gate and they still closed the gate and refused to let me on the new flight despite plane still being at the gate. It was horrible and I had to be rebooked on a flight for 24 hours later. This has been a nightmare and if American Airlines can cause customers to be delayed and then have zero empathy as having an on time flight was more important to them than helping a customer who was delayed by no fault of her own, then it's seems that it's not a company that I want to continue to give my loyalty to. I'm so disgusted.

Help was available but timing was bad in my case

It was a horrible snow storm, but updates were inconsistent and the app never displayed a remotely accurate time or gate until very close to boarding.

Book cheap flights from Washington, D.C. to Castries

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Castries found on KAYAK in the last 72 hours.
6/15Sat
3 stops
15h 25mBWI-SLU
$608
6/15Sat
2 stops
19h 03mBWI-SLU
$670
10/12Sat
2 stops
43h 10mDCA-SLU
$715
6/15Sat
3 stops
29h 15mIAD-SLU
$802
6/15Sat
3 stops
28h 46mDCA-SLU
$802
6/14Fri
2 stops
32h 50mIAD-SLU
$826
10/11Fri
3 stops
39h 05mDCA-SLU
$1,176
6/15Sat
2 stops
46h 33mIAD-SLU
$1,274

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Flights to Castries

Destination:

Castries (SLU)Saint Lucia

Cabin classes: