$233 Find Cheap Flights from Washington Dulles Airport to Saint Lucia - Compare and Save

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 8/27. 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

Wed, Aug 26 - Tue, Sep 1
Air Canada Logo
10:10 pm - 2:20 pm
IAD
-
UVF
40h 10m
2 stops
Air Canada Logo
3:15 pm - 3:24 pm
UVF
-
IAD
24h 09m
1 stop
$448Air Canada
Mon, Aug 24 - Fri, Aug 28
Air Canada Logo
4:20 pm - 2:20 pm
IAD
-
UVF
22h 00m
1 stop
Air Canada Logo
3:15 pm - 3:24 pm
UVF
-
IAD
24h 09m
1 stop
$512Air Canada
Mon, Aug 24 - Fri, Aug 28
Air Canada Logo
3:45 pm - 2:20 pm
IAD
-
UVF
22h 35m
2 stops
Air Canada Logo
3:15 pm - 3:24 pm
UVF
-
IAD
24h 09m
1 stop
$515Air Canada
Mon, Aug 24 - Fri, Aug 28
Air Canada Logo
3:45 pm - 2:20 pm
IAD
-
UVF
22h 35m
2 stops
Air Canada Logo
3:15 pm - 7:43 am
UVF
-
IAD
16h 28m
2 stops
$520Air Canada
Thu, Aug 27 - Fri, Sep 4
Air Canada Logo
10:10 pm - 2:20 pm
IAD
-
UVF
16h 10m
2 stops
Air Canada Logo
3:15 pm - 3:24 pm
UVF
-
IAD
24h 09m
1 stop
$524Air Canada
Mon, Aug 31 - Fri, Sep 4
Air Canada Logo
4:20 pm - 2:20 pm
IAD
-
UVF
22h 00m
1 stop
Air Canada Logo
3:15 pm - 2:55 pm
UVF
-
IAD
23h 40m
2 stops
$527Air Canada
Mon, Jul 20 - Fri, Jul 24
Air Canada Logo
4:20 pm - 2:10 pm
IAD
-
UVF
21h 50m
1 stop
Air Canada Logo
3:05 pm - 3:24 pm
UVF
-
IAD
24h 19m
1 stop
$538Air Canada
Sun, Nov 1 - Fri, Nov 6
Air Canada Logo
4:30 pm - 4:25 pm
IAD
-
UVF
22h 55m
1 stop
Air Canada Logo
5:25 pm - 3:50 pm
UVF
-
IAD
23h 25m
1 stop
$541Air Canada
Sun, Sep 27 - Thu, Oct 1
Multiple Airlines Logo
8:28 am - 7:00 pm
IAD
-
SLU
34h 32m
2 stops
Multiple Airlines Logo
12:35 pm - 3:25 pm
SLU
-
IAD
26h 50m
2 stops
$902Multiple Airlines
Fri, Aug 28 - Wed, Sep 2
Multiple Airlines Logo
4:20 pm - 7:00 pm
IAD
-
SLU
26h 40m
2 stops
Multiple Airlines Logo
12:35 pm - 3:24 pm
SLU
-
IAD
26h 49m
2 stops
$932Multiple 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.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Saint Lucia is August, when tickets cost $342 (return) on average. On the other hand, the most expensive months are November and June, when the average cost of round-trip tickets is $832 and $823 respectively.

Good to know

Low seasonSeptember
Cheapest flight$233
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 7% 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.
7.8
DeltaOverall score based on 8420 reviews
7.8Entertainment
8.1Boarding
7.8Comfort
8.5Crew
7.2Food
Airline reviews

Flight got canceled 4 times, missed my connecting flight due to delays, have to wait to go home tomorrow

2.0 MediocreChelsea, Jun 2026
DAL - ATL
Read more Delta reviews

Flight got canceled 4 times, missed my connecting flight due to delays, have to wait to go home tomorrow

Third flight in two months where the crew was not there. Comfort seating does not guarantee overhead bin space. Passengers with children are allowed on the plane first - if you are flying to and from Orlando, this means half the plane has boarded before you get on. And somehow all the bin space is taken up. 3 out of 5 flights have had issues with equipment or procedure. Some of these instances caused the flight to be delayed because of a "nuisance" light. One time it was a bag that had been brought on board but did not belong to anyone so we had to return to the gate. Last night we were told the "AC" on the plane doesn't work well and we're 10th for take off- because the crew was late - and that it will get cool when we're in the air. Not sure if this is usual, but I didn't think flight crew could jump seat in first class. Movie and TV selection has not been refreshed for several months- flying one to two round trips each month easily exhausts the list of content.

Great experience nice pilot very soft and easy landing and take off

We sat on the runway for over an hour before departure. That was unwelcome.

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

The seats were extremely cramped, with very little legroom or personal space. There was no room left in the overhead bins for a backpack, and the space under the seat in front was so limited that I could barely fit my bag underneath. Overall, the seating arrangement felt very uncomfortable and overcrowded.

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

The small flights with Valet Luggage has a poor service

Overall a good experience, however Wifi was not working on the flight.

THe flight was an hour late. You got us on the plan and we sat on the ground for 45 minutes with no information from the pilot whatsoever. Worst flight this year.

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Human interaction. Thought there would be more service-even a smile would have been nice.

Incoming flight was delayed, delaying boarding. It then took 30 mins to take off. Took 20 mins to get to a gate because they changed the gate last minute, crew weren’t ready so there was no one staffed to work the jet bridge. Boarding was so disorganized as is usual with American because everyone just stands around the gate regardless of boarding group.

Delays with no explanation. It could have been handled better.

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

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

Information on your arrival and departure airports