$123 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 1/1. 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

Sun, Jan 11 - Thu, Jan 15
American Airlines Logo
7:04 am - 3:03 pm
IAD
-
UVF
6h 59m1 stop
American Airlines Logo
4:06 pm - 11:12 pm
UVF
-
IAD
8h 06m1 stop
$347American Airlines
Sun, Jan 11 - Thu, Jan 15
American Airlines Logo
1:08 pm - 1:46 pm
IAD
-
UVF
23h 38m2 stops
American Airlines Logo
2:46 pm - 10:58 am
UVF
-
IAD
21h 12m2 stops
$352American Airlines
Sat, Jan 24 - Thu, Jan 29
American Airlines Logo
1:08 pm - 3:03 pm
IAD
-
UVF
24h 55m1 stop
American Airlines Logo
4:06 pm - 11:12 pm
UVF
-
IAD
8h 06m1 stop
$353American Airlines
Thu, Jan 29 - Sun, Feb 1
American Airlines Logo
11:34 am - 1:46 pm
IAD
-
UVF
25h 12m2 stops
American Airlines Logo
2:46 pm - 10:58 am
UVF
-
IAD
21h 12m2 stops
$357American Airlines
Wed, Feb 25 - Wed, Mar 4
American Airlines Logo
3:13 pm - 3:25 pm
IAD
-
UVF
23h 12m1 stop
American Airlines Logo
5:00 pm - 8:43 am
UVF
-
IAD
16h 43m2 stops
$358American Airlines
Thu, Jan 8 - Thu, Jan 15
American Airlines Logo
7:01 am - 3:03 pm
IAD
-
UVF
7h 02m1 stop
American Airlines Logo
5:02 pm - 10:58 am
UVF
-
IAD
18h 56m2 stops
$399American Airlines
Wed, Jan 14 - Sun, Jan 18
Delta Logo
6:20 am - 3:05 pm
IAD
-
UVF
7h 45m1 stop
Delta Logo
4:25 pm - 11:34 pm
UVF
-
IAD
8h 09m1 stop
$452Delta
Tue, Mar 3 - Wed, Mar 11
Delta Logo
6:00 am - 3:05 pm
IAD
-
UVF
8h 05m1 stop
Delta Logo
3:24 pm - 12:26 am
UVF
-
IAD
9h 02m1 stop
$461Delta
Fri, Jan 30 - Fri, Feb 6
American Airlines Logo
7:01 am - 3:03 pm
IAD
-
UVF
7h 02m1 stop
American Airlines Logo
4:06 pm - 11:12 pm
UVF
-
IAD
8h 06m1 stop
$462American Airlines
Mon, Feb 23 - Sun, Mar 1
Multiple Airlines Logo
9:45 am - 7:00 pm
IAD
-
SLU
32h 15m3 stops
Multiple Airlines Logo
5:00 am - 8:26 pm
SLU
-
IAD
16h 26m2 stops
$1,419Multiple 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 fly non-stop between Washington, D.C. Dulles Intl Airport and Saint Lucia?

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. Dulles Intl Airport to Saint Lucia.

There are 2 airlines that fly nonstop from Washington, D.C. Dulles Intl Airport to Saint Lucia. They are American Airlines and Delta. The cheapest airline for this route is American Airlines, with the best round-trip deal found costing $461 and arriving in Castries (UVF). On average, American Airlines offers the best prices for nonstop flights between Washington, D.C. Dulles Intl Airport and Saint Lucia.

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 American Airlines ($352) and Delta ($452).

Good to know

Low seasonSeptember
Cheapest flight$123
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 4% 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.

  • 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 morning, when round-trip flights cost $875 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 $875.

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 8005 reviews
8.1Boarding
7.9Comfort
7.3Food
8.5Crew
7.9Entertainment
Airline reviews

Great. I had to modify a flight. That was easy and free. Thank You

10.0 ExcellentOlumuyiwa, Dec 2025
DTW - ATL
Read more Delta reviews

Great. I had to modify a flight. That was easy and free. Thank You

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

None of the airplane features were available during the flight.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

Good seats in Main cabin, excellent service and excellent landing

Flight was on time is the only good thing. Person loading the plane called 1-6 to board at the same time, made it chaotic. Plane was too small for even putting backpacks in overhead. Seat for normal sized people were too small. The WIFI didn't work. When we landed had to wait because not enough ground crew.

Did not understand a single word the attendant said on the pa system. I was glad it was not an emergency.

Flight was late and boarding was confusing because gate changed and I didn’t get a notification

Gate was overcrowded. Gate agents performed very well. Flight crew was top notch! Efficient & professional & courteous. Both meals not thermalized well. Dinner main dish was actually cold in the center. Almost inedible. Breakfast sandwich was lukewarm.

The boarding was as always, the crew tried their best but not enough. The food was a disaster I had dietary restrictions that were half met because the company did not loaded the food for the flight. The entertainment screen was fine but content was not and also they removed the free messaging option from the flight and they charged 30 dollars for that crappy bandwidth. This flight is not worth the cost and the company is going down on quality.

Not comparable to Qatar Airways services on flights to Doha. Flight attendants provided basic services; I was never recognized by name or as an Executive Platinum member. Restrooms were not kept clean during the flight.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

I got sick nothing contagious but distressing enough and the care I received on the flight was astounding.

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

Information on your arrival and departure airports