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Find cheap flights from Washington Dulles Airport to Saint Lucia from $377

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 6/23. 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
0 bags
Thu 6/27
Thu 7/4

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Good to know

Low season

September

High season

April

Cheapest flight

$377
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly and prices are also 27% 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 to Saint Lucia from Washington Dulles Airport 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 to Saint Lucia with an airline and back to Washington Dulles Airport 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 to Saint Lucia from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Saint Lucia

  • Morning departure is around 36% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

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.
8.0
DeltaOverall score based on 10502 reviews
8.0Entertainment
8.6Crew
7.4Food
8.2Boarding
7.9Comfort
Airline reviews

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

10.0 ExcellentAnonymous, May 2024MSP - YVR
Read more about Delta reviews

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Half the bathrooms assigned to economy were out of action

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

AA1537 the AC was not working properly. It was very hot and uncomfortable.

Overall the flights pretty good. The snacks we’re good and they were plenty of them. Both boarding and deplaning went quickly.

Delayed abs delayed Gate crew giving poor info - we are definitely leaving at —- Ultimately to cancel flight after 4+ hours of delays Just cancel it earlier

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

Lots of weather delays that were poorly communicated and managed. I get there are weather delays but they didn’t make it clear what was happening or comfortable on the plane

Everything was on time; the flight attendants and the gate personnel were very pleasant and helpful.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Perfect flight. On time departure and early arrival. Smooth flight.

Awful! The flight was delayed and we sat on the plane in DCA for an hour because fuel was out in the wrong part of the plane and would not be accessible during flight. So the plane had to be refueled in correct tank. They also allowed someone to get off of the plane. This delayed my six hour flight by an hour and made me miss my connecting flight. I ran to new gate and American Airlines agents new about the delay and even knew that I was trying to make the connection. They knew thru communication with my friend while in flight that I was in the airport and running to the new gate and they still closed the gate and refused to let me on the new flight despite plane still being at the gate. It was horrible and I had to be rebooked on a flight for 24 hours later. This has been a nightmare and if American Airlines can cause customers to be delayed and then have zero empathy as having an on time flight was more important to them than helping a customer who was delayed by no fault of her own, then it's seems that it's not a company that I want to continue to give my loyalty to. I'm so disgusted.

Help was available but timing was bad in my case

Book cheap flights from Washington, D.C. to Saint Lucia

Recent round-trip flight deals

7/27Sat
2 stopsAmerican Airlines
27h 17mIAD-UVF
8/5Mon
2 stopsAmerican Airlines
27h 40mUVF-IAD
$593
7/24Wed
1 stopAmerican Airlines
9h 32mIAD-UVF
8/3Sat
1 stopAmerican Airlines
8h 26mUVF-IAD
$608
7/26Fri
1 stopDelta
21h 54mIAD-UVF
8/14Wed
1 stopDelta
18h 03mUVF-IAD
$609
7/20Sat
2 stopsAmerican Airlines
27h 17mIAD-UVF
7/30Tue
2 stopsAmerican Airlines
19h 19mUVF-IAD
$612
6/18Tue
1 stopAir Canada
22h 30mIAD-UVF
6/30Sun
1 stopAir Canada
23h 49mUVF-IAD
$619
6/15Sat
1 stopAir Canada
22h 30mIAD-UVF
7/3Wed
2 stopsAir Canada
20h 11mUVF-IAD
$620
6/18Tue
1 stopDelta
8h 45mIAD-UVF
6/28Fri
1 stopDelta
18h 09mUVF-IAD
$621
7/13Sat
1 stopUnited Airlines
7h 31mIAD-UVF
7/20Sat
1 stopUnited Airlines
8h 05mUVF-IAD
$956
6/26Wed
3 stops
30h 27mIAD-SLU
7/3Wed
3 stops
30h 31mSLU-IAD
$1,037
6/23Sun
3 stops
19h 15mIAD-SLU
6/30Sun
3 stops
28h 20mSLU-IAD
$1,077

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Recent one-way flight deals

6/23Sun
2 stopsAmerican Airlines
16h 10mIAD-UVF
$377
6/23Sun
2 stops
23h 51mIAD-SLU
$1,000
6/23Sun
3 stops
28h 26mIAD-UVF
$1,043
6/22Sat
3 stops
29h 15mIAD-SLU
$1,052
6/22Sat
2 stops
42h 10mIAD-SLU
$1,227
6/21Fri
3 stops
33h 10mIAD-SLU
$1,610
6/20Thu
3 stops
30h 20mIAD-SLU
$1,909
6/21Fri
2 stops
33h 10mIAD-SLU
$2,406
6/20Thu
2 stops
16h 25mIAD-SLU
$2,421
6/23Sun
3 stops
58h 15mIAD-SLU
$2,673

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Last minute flights from Dulles Intl to Saint Lucia

Last minute flight, train and bus deals

6/2Sun
multi-stopAir Canada
8h 00mIAD-UVF
6/5Wed
multi-stopAir Canada
28h 59mUVF-IAD
$521
5/30Thu
multi-stopDelta
7h 27mIAD-UVF
6/2Sun
multi-stopDelta
8h 08mUVF-IAD
$1,021
6/2Sun
multi-stop
31h 35mIAD-SLU
6/5Wed
multi-stop
21h 23mSLU-IAD
$1,424
6/2Sun
multi-stop
25h 30mIAD-SLU
6/5Wed
multi-stop
21h 23mSLU-IAD
$1,426
6/2Sun
multi-stopAmerican Airlines
17h 48mIAD-UVF
6/5Wed
multi-stopAmerican Airlines
19h 28mUVF-IAD
$1,502
6/2Sun
multi-stop
19h 15mIAD-SLU
6/5Wed
multi-stop
25h 06mSLU-IAD
$1,706
5/30Thu
multi-stop
21h 05mIAD-UVF
6/2Sun
multi-stop
28h 59mUVF-IAD
$2,151
5/30Thu
multi-stopAmerican Airlines
28h 36mIAD-UVF
6/2Sun
multi-stopAmerican Airlines
22h 44mUVF-IAD
$3,656

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Washington Dulles Airport - Saint Lucia Flights

Departure:

Washington Dulles Airport (IAD)United States

Cabin classes: