$165 Find Cheap Flights from Washington Dulles Airport 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 Dulles Intl to Saint Lucia departing on 4/9. 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

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Book Cheap Dulles Intl to Saint Lucia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl 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 Dulles Intl to Saint Lucia

Mon, Jun 15 - Fri, Jun 19
Air Canada Logo
4:05 pm - 2:10 pm
IAD
-
UVF
22h 05m
1 stop
Air Canada Logo
3:05 pm - 3:24 pm
UVF
-
IAD
24h 19m
1 stop
$402Air Canada
Mon, Jun 15 - Fri, Jun 19
Air Canada Logo
4:05 pm - 2:10 pm
IAD
-
UVF
22h 05m
1 stop
Air Canada Logo
3:05 pm - 11:43 am
UVF
-
IAD
20h 38m
2 stops
$407Air Canada
Sun, Jun 7 - Fri, Jun 12
Air Canada Logo
10:10 pm - 2:10 pm
IAD
-
UVF
40h 00m
2 stops
Air Canada Logo
3:05 pm - 9:26 pm
UVF
-
IAD
30h 21m
1 stop
$412Air Canada
Mon, May 25 - Tue, Jun 2
Air Canada Logo
4:05 pm - 2:05 pm
IAD
-
UVF
22h 00m
1 stop
Air Canada Logo
3:05 pm - 3:29 pm
UVF
-
IAD
24h 24m
1 stop
$413Air Canada
Wed, Jun 17 - Tue, Jun 23
Air Canada Logo
10:10 pm - 2:20 pm
IAD
-
UVF
40h 10m
2 stops
Air Canada Logo
3:05 pm - 3:01 pm
UVF
-
IAD
23h 56m
2 stops
$416Air Canada
Mon, May 25 - Tue, Jun 2
Air Canada Logo
4:05 pm - 2:05 pm
IAD
-
UVF
22h 00m
1 stop
Air Canada Logo
3:05 pm - 11:43 am
UVF
-
IAD
20h 38m
2 stops
$418Air Canada
Wed, May 27 - Tue, Jun 2
Air Canada Logo
10:10 pm - 2:05 pm
IAD
-
UVF
39h 55m
2 stops
Air Canada Logo
3:05 pm - 7:44 am
UVF
-
IAD
16h 39m
2 stops
$423Air Canada
Thu, May 21 - Fri, Jun 5
Air Canada Logo
10:10 pm - 2:05 pm
IAD
-
UVF
15h 55m
2 stops
Air Canada Logo
3:05 pm - 3:29 pm
UVF
-
IAD
24h 24m
1 stop
$432Air Canada
Tue, Jul 14 - Sat, Jul 18
Multiple Airlines Logo
4:20 pm - 7:00 pm
IAD
-
SLU
26h 40m
2 stops
Multiple Airlines Logo
12:35 pm - 4:12 pm
SLU
-
IAD
27h 37m
2 stops
$1,045Multiple Airlines
Wed, Jul 1 - Sun, Jul 5
Multiple Airlines Logo
9:55 am - 7:00 pm
IAD
-
SLU
33h 05m
2 stops
Multiple Airlines Logo
9:10 am - 4:12 pm
SLU
-
IAD
31h 02m
2 stops
$1,113Multiple Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Saint Lucia flights

Get data-powered insights and trends into flights from Dulles Intl to Saint Lucia to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Washington, D.C. Dulles Intl Airport to Saint Lucia?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. Dulles Intl Airport to Saint Lucia were found on Air Canada ($552) and Delta ($666).

Good to know

Low seasonSeptember
Cheapest flight$165
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Washington Dulles Airport to Castries

FAQs - booking Saint Lucia flights

  • How does KAYAK find such low prices on flights from Washington Dulles Airport 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 Dulles Airport to Saint Lucia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington Dulles Airport 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 Dulles Airport 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 Dulles Airport 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 Dulles Airport 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 Dulles Airport to Saint Lucia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Dulles Intl to Saint Lucia

 
Need help choosing which airline to fly with from Dulles Intl 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.
7.9
DeltaOverall score based on 8314 reviews
7.9Comfort
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
Airline reviews

Entertainment is ok! Boarding and seat with zone is terrible. I paid for the seats but you didn’t give me what I paid for which is exit isles.

4.0 OkayAnonymous, Mar 2026
BHM - ATL
Read more Delta reviews

Entertainment is ok! Boarding and seat with zone is terrible. I paid for the seats but you didn’t give me what I paid for which is exit isles.

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

This was a Latam operated flight. Seats seemed a bit narrow in business class. Older aircraft.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

Absolutely terrible. Would never fly American again. 2 deplaned incidents and delayed by close to 24 hours. $12 meal voucher for first class passengers was an insult to the injury. Pathetic.

Terrible planning. And even worse gate agents. Absolutely rude behavior.

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

Flight was scheduled at 11:26am but they keep Delaying until midnight. They waited at airport restless.

Rough flight No beverage service due to turbulence Bottom Seat cushion was non existent

Flight delay for mechanical. Inbound arrived on time. No one said why mechanical delay.

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

This was one of the most frustrating travel experiences I've had to date. I had changed my flight day of to this one as it was slated to depart on time. It ended up being so delayed that my original flight took off before this one did. The boarding process began but eventually stopped and everyone had to get off the plane as a problem was identified. The person at the front desk just tried to laugh it off as if this wasn't already a huge inconvenience. From there, we eventually got to board only to sit at the gate for an additional hour because of some additional issue. This was extremely frustrating and caused a lot of stress.

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

delayed due to weather. Could not communicate with family since the wifi was broken

Everything you need to know for your flight from Dulles Intl to Saint Lucia

Information on your arrival and departure airports