$198 Find Cheap Flights from Reagan Washington National 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 Reagan-National to Saint Lucia departing on 7/13. 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 Reagan-National 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 Reagan-National 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 Reagan-National to Saint Lucia

Sun, Jun 21 - Fri, Jun 26
Air Canada Logo
12:40 pm - 2:20 pm
DCA
-
UVF
49h 40m
2 stops
Air Canada Logo
3:15 pm - 10:18 am
UVF
-
DCA
19h 03m
2 stops
$491Air Canada
Mon, Jul 6 - Fri, Jul 10
Air Canada Logo
8:40 pm - 2:10 pm
DCA
-
UVF
17h 30m
1 stop
Air Canada Logo
3:05 pm - 12:00 pm
UVF
-
DCA
20h 55m
2 stops
$492Air Canada
Mon, Jul 6 - Fri, Jul 10
Air Canada Logo
4:20 pm - 2:10 pm
DCA
-
UVF
21h 50m
2 stops
Air Canada Logo
3:05 pm - 12:00 pm
UVF
-
DCA
20h 55m
2 stops
$495Air Canada
Wed, Aug 26 - Tue, Sep 1
Air Canada Logo
12:40 pm - 2:20 pm
DCA
-
UVF
49h 40m
2 stops
Air Canada Logo
3:15 pm - 10:31 pm
UVF
-
DCA
31h 16m
1 stop
$501Air Canada
Mon, Jul 20 - Fri, Jul 24
Air Canada Logo
8:40 pm - 2:10 pm
DCA
-
UVF
17h 30m
1 stop
Air Canada Logo
3:05 pm - 8:52 am
UVF
-
DCA
17h 47m
1 stop
$511Air Canada
Wed, Aug 26 - Tue, Sep 1
Air Canada Logo
12:40 pm - 2:20 pm
DCA
-
UVF
49h 40m
2 stops
Air Canada Logo
3:15 pm - 12:00 pm
UVF
-
DCA
20h 45m
2 stops
$512Air Canada
Thu, Oct 29 - Mon, Nov 2
Air Canada Logo
12:55 pm - 3:25 pm
DCA
-
UVF
26h 30m
2 stops
Air Canada Logo
5:25 pm - 12:19 pm
UVF
-
DCA
19h 54m
2 stops
$515Air Canada
Mon, Jul 13 - Fri, Jul 17
Air Canada Logo
12:40 pm - 2:10 pm
DCA
-
UVF
25h 30m
2 stops
Air Canada Logo
3:05 pm - 12:00 pm
UVF
-
DCA
20h 55m
2 stops
$518Air Canada
Thu, Oct 1 - Mon, Oct 5
Multiple Airlines Logo
6:59 am - 7:00 pm
DCA
-
SLU
12h 01m
2 stops
Multiple Airlines Logo
12:35 pm - 8:55 am
SLU
-
DCA
20h 20m
2 stops
$902Multiple Airlines
Sat, Aug 29 - Sat, Sep 5
Multiple Airlines Logo
6:59 am - 7:00 pm
DCA
-
SLU
12h 01m
2 stops
Multiple Airlines Logo
12:35 pm - 8:52 am
SLU
-
DCA
20h 17m
2 stops
$910Multiple Airlines
Booking Insights

KAYAK's insights & trends for Reagan-National to Saint Lucia flights

Get data-powered insights and trends into flights from Reagan-National 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. Reagan-National 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. Reagan-National 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. Reagan-National Airport to Saint Lucia is November, when tickets cost $179 (return) on average. On the other hand, the most expensive months are May and August, when the average cost of round-trip tickets is $762 and $691 respectively.

Good to know

Low seasonSeptember
Cheapest flight$198
Best time to beat the crowds but there is an average 30% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Reagan Washington National Airport to Castries

FAQs - booking Saint Lucia flights

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Reagan Washington National 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 Reagan Washington National 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 Reagan Washington National 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 Reagan Washington National 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 Reagan Washington National 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 Reagan-National to Saint Lucia

 
Need help choosing which airline to fly with from Reagan-National 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.
7.1
American AirlinesOverall score based on 11639 reviews
6.4Food
7.5Boarding
7.9Crew
7.2Comfort
6.9Entertainment
Airline reviews

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

6.0 GoodNahreen, Jun 2026
IAD - DFW
Read more American Airlines reviews

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

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

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.

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.

Nice plane, clean, wifi available and movies. All the flight attendants were courteous.

The gate attendant in Boston had a high raspy voice and spoke much too fast to be understood. Not pleasant.

The flight was delayed for more than 3 hours the flight attendant was so angry, it was my first flight with JetBlue but i don’t think I flight with them again.

First the flt was delayed over 2 hrs bc of plane mechanics that should have been handled better! No text or email was sent so only found out at the airport so there we sat for 5 hours! THATS RIDICULOUS! The gate area was filthy! No agents showed up till hr before so no additional info was given-waited online for 15 mins while the gate agent chatted and got together then given last seat in back of plane!! No priority for senior or anything-took attendants over 2hrs to serve drinks and snack-WHY are they not served together? By time snack came needed another drink! Worst service in my life!

Since we started at syr the service, crews, and flights were just excellent

All the TV screens in my rows was non functional . The map shown for an international route was antiqued..

It was fine for what it was. It’s not luxury travel but it was efficient, for the most part. Having my carry-on transferred into luggage however, was unwelcome.

We had better-than-average leg room and I loved the access to shows and movies. During boarding, we could not hear the agent even though we were close to the boarding door, which was kind of scary when we realized that half of the passengers had already boarded. Also, the entertainment was awesome, but I could not hear the movie as well as I would have liked, because my headphones were crappy. It would have been better if I could connect my own ear buds via Bluetooth or if JetBlue provided headphones.

On time, friendly attendants, quick wheelchair assistance and help checking in bags. Also appreciated change in seats, more forward to make it easier for my 97 year old mother to board and exit the plane. Thank you, JetBlue!

Flight did not have onboard charging and TV screen flickering.

Everything you need to know for your flight from Reagan-National to Saint Lucia

Information on your arrival and departure airports