$185 Find Cheap Flights from Reagan Washington National Airport to Saint Lucia - Compare and Save

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Price, demand and travel trends for Washington, D.C. Reagan-National Airport to Saint Lucia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from Washington, D.C. Reagan-National Airport to Saint Lucia cheaper or more expensive than last year?

Fares from Washington, D.C. Reagan-National Airport to Saint Lucia are running about the same as they were around this time last year, averaging $707 round-trip.

What are the cheapest fares from Washington, D.C. Reagan-National Airport to Saint Lucia right now?

The cheapest fare from Washington, D.C. Reagan-National Airport to Saint Lucia in the last week was $466 round-trip, to Castries Hewanorra (UVF).

What’s the cheapest month to fly from Washington, D.C. Reagan-National Airport to Saint Lucia?

February is the cheapest time of year to fly, with average fares of $583. Prices are highest in May, when average flight costs increase to around $930.

When is the best time to book flights from Washington, D.C. Reagan-National Airport to Saint Lucia?

Book your flights 18 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 24% compared to booking last-minute (within 2 weeks of departure).

Which airport in Saint Lucia is the cheapest to fly to from Washington, D.C. Reagan-National Airport?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Saint Lucia are:

• Castries Hewanorra (UVF) (avg. price $724)
• Castries George F. L. Charle (SLU) (avg. price $1,665)

What’s the cheapest day to fly from Washington, D.C. Reagan-National Airport to Saint Lucia?

Tuesday tends to be the cheapest day to fly from Washington, D.C. Reagan-National Airport to Saint Lucia, while Wednesday is the most expensive. Fares run about 24% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Washington, D.C. Reagan-National Airport to Saint Lucia?

Data from the past 12 months shows it's cheapest to fly to Saint Lucia during the evening with average prices of $402. The morning is the most expensive time to fly, with average prices of $732.

Key details for Washington, D.C. Reagan-National Airport to Saint Lucia flights

Low season

October

Cheapest flight

$185
Beat the crowds with an average 35% drop in travelers.
The most popular month to fly with an average 19% increase in travelers.
One-way flight from Washington, D.C. Reagan-National Airport to Castries

Your Washington, D.C. Reagan-National Airport to Saint Lucia flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Washington, D.C. Reagan-National Airport to Saint Lucia?

    Yes. Fares from Washington, D.C. Reagan-National Airport to Saint Lucia are low right now. As a rule of thumb, a round-trip under $584 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Washington, D.C. Reagan-National Airport to Saint Lucia?

    Over the past 12 months, round-trip fares from Washington, D.C. Reagan-National Airport to Saint Lucia have ranged from $584 to $896.

  • What are the main airports serving Saint Lucia?

    Flights to Saint Lucia use two main airports, Castries George F. L. Charle (SLU) and Castries Hewanorra (UVF).

  • What airlines fly nonstop from Washington, D.C. Reagan-National Airport to Saint Lucia?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Washington, D.C. Reagan-National Airport to Saint Lucia. One-stop options include:

    • American Airlines
    • Delta
    • JetBlue

  • Which cabin classes are available on flights from Washington, D.C. Reagan-National Airport to Saint Lucia?

    On flights from Washington, D.C. Reagan-National Airport to Saint Lucia you can book Economy Class or First Class.

Your guide to booking Washington, D.C. Reagan-National Airport to Saint Lucia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 18 weeks before your trip. KAYAK data shows fares in this window are around 24% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for February when flights are typically cheapest and avoid May when prices are at their highest.
  • Flying on Tuesday is usually the cheapest. Flights on Wednesday cost about 24% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Castries Hewanorra (UVF) is the cheapest airport to fly into from Washington, D.C. Reagan-National Airport. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Castries, which is the most popular destination in Saint Lucia. From there, it's easy to continue on to other popular destinations such as Soufrière, Gros Islet and Vieux Fort.

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
JetBlueOverall score based on 3074 reviews
7.2Entertainment
7.4Comfort
7.3Boarding
6.6Food
7.9Crew
Airline reviews

Good experience with this flight. Boarding was smooth with no issues. The short flight was good with quick drink & snack service. Nice easy way to get back from DC.

10.0 ExcellentNewton, Sep 2026
Read more JetBlue reviews

Good experience with this flight. Boarding was smooth with no issues. The short flight was good with quick drink & snack service. Nice easy way to get back from DC.

Flight is delayed by more than an hour without any reason, the jet blue gates kept changing every 20 mins and there is no proper communication. No ear phones provided in flight, there is a screen with entertainment but what is the use, I have earphones but the console has outdated audio connections, no usb C or bluetooth, they are living 15 years behind

A nightmare. Scheduled flight delayed 2 hours then cancelled because pilot timed out . Unable to find another pilot. Really?! Weather certainly a factor, but JetBlue seemed totally unprepared for the chaos that ensued when flight routes were cancelled. More cancelled flights, finally many of us who had been bumped from other flights were allowed to board a Boston bound plane around 3:00am, delay after delay, sat on tarmac for another half hour while pilot dealt with weight distribution issues (?), arrived in Boston 4:30. Crew were wonderful- same attendants all day and night and they were exhausted. Fortunately for me and my son that Boston was our final destination, not so lucky for many who missed connecting flights.

The flight was delayed 14 hours and communication was very poor. No one seemed to know what was happening and the gate agent was trying to help people for several flights. She was by herself trying to help 100s of people.

JetBlue worker, Blythe, was so amazing at the DCA counter. If it wasn’t for her, I’m not sure we would’ve made it through. Please thank her!

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 was on time and smooth. Customer service was decent

They forced me to check my hand luggage at the gate.

Still hasn’t left. Why are you asking how it was?

My flight got delayed and eventually canceled, then rescheduled. I and several others had a connection from Boston to Paris and asked several times if we would make it. They assured us we would and then rebooked us mid flight without our consent and closed doors early even though they said they communicated we were a bit delayed. We got stranded in Boston and I opted with being rebooked for a different connection to France since they refused to pay for a Hotel. I've now been in Europe for 5 days and still haven't recieved my bags. There was absolutely no urgency for the fact that I'm in a foreign country with absolutely no change of clothes or any of my medication. Such an overwhelming and frustrating experience.

It was close to its perfect the flake could be took off early, landed early, didn’t have to wait for my daughter stroller luggage came out quick, very efficient, very good flight

comfy and spacious seats for premium economy, nice flight attendants. only problem was the wifi did not work, and my entertainment screen was locked in Arabic language and all kids shows with no way of seemingly changing it. but the flight was fine and I arrived with no issues

Limited service due to turbulence, N/A Food and Drink. No entertainment

Flight was delayed which isn’t the airline’s fault, but the communication around it was terrible. I left the lounge to show up at the gate to board at the time in my app, and the flight in front of mine was still boarding and the inbound plane hadn’t even taken off yet. Delays were slow to show up in my app. Improved communication could have let me have a more pleasant experience in the lounge vs waiting 1.5 hours at the gate.

Wifi was good on the flight from DCA to Dallas and terrible on the flight from Dallas to Tucson. The forward head in the flight from Dallas to Tucson was putrid smelling entirely urine soaked. The flight from DCA to Dallas was delayed by almost 30 min with a plane change.

Sat on tarmac at arrival at DFw for more than 30 min waiting for a gate.

Business Class layout was excellent. The seats were not nearly as comfortable as UA, Delta or Air New Zealand (the best). Nor were the controls as flexible. Food was okay but not great. Breakfast pancakes were like cardboard.

I am Plstinum Pro snd was standby on earlier flight. They gave seats to people that asked rather than follow standby order. When realized what was happening was too late to get on as no seats left. My scheduled flight was late. Then filled the seat beside me Ruth rude person that they had to move from her original seat

I have yet to come across an AA agent or flight attendant that is friendly. They really inhibit a good experience.

Flight was good, little delayed because of busy plane traffic

More options for your flight from Reagan-National to Saint Lucia

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