$165 Find Cheap Flights from Washington, D.C. to Saint Lucia

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 Saint Lucia departing on 8/6. 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

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Best Saint Lucia Flight Deals from Washington, D.C.

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Castries
Castries2 stops$842
Castries
Castries2 stops$842

Cheap Flights from Washington, D.C. to Saint Lucia

 
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 Saint Lucia 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 Saint Lucia

Mon, Jun 23 - Tue, Sep 9
Air Canada Logo
8:18 am - 2:15 pmIAD-UVF
29h 57m2 stops
Air Canada Logo
3:10 pm - 4:10 pmUVF-IAD
25h 00m1 stop
$373Air Canada
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Thu, Sep 11 - Fri, Sep 19
Air Canada Logo
4:35 pm - 2:15 pmDCA-UVF
21h 40m2 stops
Air Canada Logo
3:10 pm - 6:04 pmUVF-DCA
26h 54m1 stop
$378Air Canada
Find Deal
Wed, Sep 10 - Wed, Sep 17
JetBlue Logo
6:25 am - 1:45 pmDCA-UVF
7h 20m1 stop
JetBlue Logo
3:06 pm - 10:56 pmUVF-DCA
7h 50m1 stop
$431JetBlue
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Fri, Aug 22 - Thu, Aug 28
Delta Logo
7:00 am - 2:15 pmBWI-UVF
7h 15m1 stop
Delta Logo
3:35 pm - 12:21 amUVF-BWI
8h 46m1 stop
$447Delta
Find Deal
Fri, Aug 22 - Mon, Aug 25
American Airlines Logo
6:20 pm - 1:55 pmBWI-UVF
19h 35m2 stops
American Airlines Logo
3:35 pm - 6:03 pmUVF-BWI
26h 28m2 stops
$452American Airlines
Find Deal
Mon, Aug 11 - Fri, Aug 15
American Airlines Logo
6:53 pm - 1:57 pmBWI-UVF
19h 04m1 stop
American Airlines Logo
3:35 pm - 6:30 pmUVF-BWI
26h 55m2 stops
$458American Airlines
Find Deal
Sun, Sep 7 - Sat, Sep 13
JetBlue Logo
6:25 am - 2:00 pmDCA-UVF
7h 35m1 stop
JetBlue Logo
2:06 pm - 10:56 pmUVF-DCA
8h 50m1 stop
$463JetBlue
Find Deal
Sat, Aug 9 - Sat, Aug 16
United Airlines Logo
6:15 am - 3:30 pmBWI-UVF
9h 15m1 stop
United Airlines Logo
12:55 pm - 10:09 amUVF-BWI
21h 14m1 stop
$545United Airlines
Find Deal
Sun, Aug 17 - Tue, Aug 26
Delta Logo
5:40 am - 2:15 pmBWI-UVF
8h 35m1 stop
Delta Logo
3:35 pm - 12:21 amUVF-BWI
8h 46m1 stop
$552Delta
Find Deal
Sat, Aug 9 - Sat, Aug 16
United Airlines Logo
6:15 am - 3:30 pmBWI-UVF
9h 15m1 stop
United Airlines Logo
12:55 pm - 10:09 amUVF-BWI
21h 14m1 stop
$630United Airlines
Find Deal
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KAYAK's insights & trends for Washington, D.C. to Saint Lucia flights

Get data-powered insights and trends into flights from Washington, D.C. to Saint Lucia 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 Saint Lucia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Saint Lucia, 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 Saint Lucia is January, when tickets cost $655 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of round-trip tickets is $867 and $865 respectively.


Good to know

Low seasonSeptember
High seasonApril
Cheapest flight$165
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from Reagan Washington National Airport to Castries

FAQs - booking Saint Lucia flights

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

    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 Saint Lucia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington, D.C. to Saint Lucia 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 Saint Lucia?

    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 from Washington, D.C. to Saint Lucia with an airline and back 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 Saint Lucia?

    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 from Washington, D.C. to Saint Lucia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Saint Lucia?

    The cheapest time of day to fly to Saint Lucia is generally in the evening, when round-trip flights cost $772 on average. Morning departures are around 10% more expensive than evening flights, on average. The most expensive time of day to fly to Saint Lucia is generally in the morning, which is peak travel time and where the average cost of a ticket is $844.

Top 3 airlines serving from Washington, D.C. to Saint Lucia

 
Need help choosing which airline to fly with from Washington, D.C. to Saint Lucia? 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.
8.0
DeltaOverall score based on 7950 reviews
7.3Food
8.2Boarding
7.9Comfort
7.9Entertainment
8.5Crew
Airline reviews

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

10.0 ExcellentHartaj, Jun 2025EWR - RDU
Read more Delta reviews

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Great flight! Only complaint I had was that I didn’t get breakfast that morning because I don’t eat eggs for breakfast.. I ate an energy bar I bought in the airport which I had never done before. Otherwise, another great Delta flight!

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

Communication since no reason or explanation was given for 3 hrs delay

The flight departed more than 1 hour late. Leg room is bigger than most airlines

Flight was delayed several 3 hours - no reason was given and no communication what so ever.

No overhead baggage room even though I was seated in row 2. Consequently had to check in my carry on bag. Baggage carousel was jammed. Took 45 min to get my bag.

Excellent from start to finish. All staff members were amazing!

Excellent. Although they used to greet me as a mosaic member and provide a free drink, early boarding helps me to keep coming back to JetBlue.

Cancelled flight with no specific instructions to get a boarding pass for another flight. The whole flight of people were in line for an hour because there was only 1 person to help at the desk. This was unusual for JetBlue.

It was too hot in the cabin. The AC did not help.

Except for the 28 minute delay leaving and the earlier reschedule to a later takeoff time the flight was good.

Loved the leg room and tvs screens on the seats and free WiFi. Wish the price was lower and could save by rebooking

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious. this return flight not as tasty, but filling.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Weather delay for 2.5 hours followed by half hour crew delay, did not have ginger ale, uncomfortable seats

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

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

Cabin class types available on flights to Saint Lucia

Cabin classes available on flights to Saint Lucia. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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